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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 2339. Отображено 100.
19-04-2012 дата публикации

O-ring for feed roller

Номер: US20120091669A1
Автор: Byung-chil Lee
Принадлежит: Individual

An O-ring for a feed roller includes an O-ring body having first and second ends, which are discontinued from each other, wherein coupling surfaces in the first and second ends are capable of being coupled to each other while opposing each other in a complementary fashion; and a fastening unit fastening the first and second ends to each other such that the coupling surfaces in the first and second ends form and maintain a coupled state in which coupling surfaces oppose each other in a complementary fashion. The O-ring body has first and second storage recesses formed in corresponding opposite positions, the first and second storage recesses being engraved on outer circumferential surfaces thereof, and the fastening unit is received in and fitted to the first and second storage recesses.

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Номер записи: 1
09-08-2012 дата публикации

Ring element and turbomachine having such a ring element

Номер: US20120198858A1
Автор: Franz-Dieter SCHMIDT, Johannes Rabe, Wilfried Schuette
Принадлежит: MTU AERO ENGINES GMBH

A ring element for a turbomachine, in particular for an aircraft gas turbine, is disclosed. The ring element has a ring element main body that has two adjacently arranged ring ends, the ring ends being connected to one another in a form-locking manner with respect to an axial plane. Also disclosed is a turbomachine having at least one such ring element.

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Номер записи: 2
27-12-2012 дата публикации

V-pack seal and method for sealing a shaft

Номер: US20120326395A1
Автор: Lisa McCarthy
Принадлежит: Individual

An improved shaft seal includes a plurality of V-pack rings that each includes a bi-directional cut with cuts of unequal lengths. An upper cut extends from the top of the V-pack ring to the shoulder. A lower cut extends from the bottom of the V-pack to the shoulder and is longer in length than the upper cut.

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Номер записи: 3
13-06-2013 дата публикации

Seal member

Номер: US20130147126A1
Автор: Taisuke Sato, Takenori Suzuki
Принадлежит: Roki Co Ltd

A seal member has a ring shape which is assembled in a portion between a tubular member to be inserted into and fixed to a mount hole formed to a head cover of an internal combustion engine and a peripheral wall portion of the mount hole. The seal member is provided with an axial-direction seal portion formed to axial one end portion of the seal member, and a diameter-direction seal portion formed to another one end of the seal member. A fixing member configured to fix movement in a diameter direction of the seal member between the axial-direction seal portion and the diameter-direction thereof is formed along a peripheral wall portion of the mount hole.

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Номер записи: 4
11-07-2013 дата публикации

OIL SEAL

Номер: US20130175764A1
Автор: Hamamoto Kokichi
Принадлежит: NOK CORPORATION

An oil seal has a first seal member including a main lip and a first dust lip, and a second seal member installed in a machine outer side of the first seal member. The second seal member integrally has an end surface covering section covering an end surface section of a housing, an outer peripheral insertion section inserted from one side in an axial direction to an outer peripheral surface of the housing and engaged with a stepped engagement section in the outer peripheral surface of the housing so as to prevent the second seal member from coming off from the housing, an inner peripheral insertion section inserted to an inner peripheral surface of the shaft hole in the housing from one side in the axial direction, and a second dust lip slidably coming into close contact with the shaft in the machine outer side of the first dust lip. 1. An oil seal comprising:a first seal member which is installed to an inner periphery of a shaft hole in a housing inserting a shaft thereto; anda second seal member which is installed to an end surface section of said housing in an opening peripheral edge section of said shaft hole,wherein said first seal member integrally has an affixation section which is fitted to an inner peripheral surface of the shaft hole in said housing, a main lip which slidably comes into close contact with a peripheral surface of said shaft so as to seal a sealed fluid in an inner side of the machine, and a first dust lip which slidably comes into close contact with the peripheral surface of said shaft so as to seal a foreign material such as a muddy water in the outer side of the machine, andwherein said second seal member integrally has an end surface covering section which covers the end surface section of said housing, an outer peripheral insertion section which is inserted from one side in an axial direction to an outer peripheral surface of said housing and is engaged with a stepped engagement section provided in the outer peripheral surface of said ...

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Номер записи: 5
08-08-2013 дата публикации

Sensor Subassembly for a Vehicle and Device for Measuring Rotational Movements of a Wheel Bearing

Номер: US20130202235A1
Автор: Andreas Fink, Anwar Hegazi, Kenichi Ninomiya, Matthias Waibler, Mirko Scheer
Принадлежит: ROBERT BOSCH GMBH

A sensor subassembly for a vehicle has at least one sensor unit arranged in a cap-shaped plastic part. The cap-shaped plastic part is carried by a retaining bush and seals off the retaining bush at one end. An associated device is configured to measure rotational movement of a wheel bearing. A resilient sealing and compensating element in pressed in between the-shaped plastic part and the retaining bush, in a first sealing area for sealing off a first leakage path, so that the cap-like plastic part, in conjunction with the sealing and compensating element, seals off the retaining bush tightly at one end.

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Номер записи: 6
12-09-2013 дата публикации

SEALING SYSTEM

Номер: US20130234398A1
Автор: Abe Yoshiyuki, Ajiki Kenichi
Принадлежит: NOK CORPORATION

A sealing system is provided which is intended to achieve an improvement in durability. A dust seal is composed of a first dust seal () and a second dust seal () which is arranged at a location nearer to an atmospheric air side than the first dust seal (), wherein each of the first dust seal () and the second dust seal () has a seal lip formed so as to be slidable with respect to an outer peripheral surface of the shaft. The first dust seal () has seal lips () made of urethane rubber, and the second dust seal () has only a single seal lip () which is made of a rubber higher in flexibility than urethane rubber, and which extends toward the atmospheric air side. 1a main seal that prevents fluid to be sealed from leaking to an atmospheric air side; anda dust seal that is arranged at a location nearer to the atmospheric air side than said main seal, for preventing dust from invading to a side of the fluid to be sealed;wherein said dust seal is composed of a first dust seal and a second dust seal which is arranged at a location nearer to the atmospheric air side than said first dust seal, and each of said first dust seal and said second dust seal has an axially extending seal lip extending toward said atmospheric air side and formed so as to be slidable with respect to the outer peripheral surface of said shaft;the seal lip of said first dust seal is made of urethane rubber; andthe seal lip of said second dust seal is made of a rubber which is higher in flexibility than said urethane rubber, and is composed of only a seal lip that extents toward the atmospheric air side.. A sealing system which serves to seal an annular gap between an inner peripheral surface of a shaft hole formed in a housing and an outer peripheral surface of a shaft which is inserted through said shaft hole and carries out a reciprocating movement relative to said housing, said system comprising: This application is a continuation of U.S. patent application Ser. No. 13/004,055 filed on Jan. 11, 2011. ...

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Номер записи: 7
31-10-2013 дата публикации

ANNULAR SEALING DEVICE

Номер: US20130285333A1
Автор: FOTI Claudio
Принадлежит: AKTIEBOLAGET SKF

A sealing device including an annular shield and an elastomeric sealing element having: a first lip extending radially and protruding towards the interior and axially from a first side face of the shield; a second annular lip which extends radially and protrudes towards the interior and axially from a second side face of the shield, opposite to the first one; and a third lip arranged between the first and the second lips and axially extending from the first lip side, axially spaced apart therefrom; the second and third lips extending from a common annular root portion defining an elastic hinge thus forming a V therebetween for rotating together as a rocker arm; the undeformed lips are radially internally delimited by respective edges having a substantially circular shape and the edges of the first and second lips having a smaller diameter than the diameter of the edge of the third lip. 1. An annular sealing device inserted between first and second rotating mechanical elements of a washing machine , the sealing device comprising:a rigid annular shield, adapted to be integrally coupled to the first mechanical element, and a first elastically deformable annular lip which, in radial section, obliquely extends so as to protrude from the shield, radially towards the interior of the shield and axially from the side of a first face of the shield;', {'b': '8', 'a second elastically deformable annular lip which, in radial section, obliquely extends so as to protrude from the shield, radially towards the interior the shield and axially from the side of a second face of the shield, opposite to the first face (); and'}, i—the third lip axially extends from the same side as the first lip, so as to remain always axially spaced apart from the first lip and to define, between the first and third lips, an annular chamber filled with lubricating grease; and wherein', 'ii—the second and third lips extend so as to protrude from a common annular root portion of the elastomeric annular ...

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Номер записи: 8
14-11-2013 дата публикации

SEAL ARRANGEMENT FOR A PROPELLER SHAFT AND METHOD FOR SEALING A PROPELLER SHAFT

Номер: US20130300065A1
Автор: Palokangas Sami
Принадлежит: ABB Oy

The present disclosure relates to sealing the propeller shaft of a ship using a sealing having a group of lip seals arranged consecutively in a direction of the propeller shaft so that a seal chamber is created between adjacent lip seals. The pressure of the first seal chamber on the propeller side can be close to the pressure of the surrounding water at the propeller shaft level, and the pressure of the second seal chamber furthest from the propeller can be adjusted to a fixed value that is lower than the pressure of the first seal chamber. The pressure of a third chamber located between the first chamber and the second chamber can be adjustable by pressure regulation devices to a value between the pressure values of the first and the second chambers by adjusting the pressure loss caused by the flow of a liquid medium. 1. An arrangement for sealing a propeller shaft to be supported against the body of the a ship or propulsion unit with bearings the sealing comprising:a group of lip seals which are arranged consecutively in a direction of a propeller shaft for creating a seal chamber between adjacent lip seals, such that a pressure of a first seal chamber on a propeller will be essentially close to a pressure of surrounding water at a propeller shaft level, a pressure of the second seal chamber furthest from the propeller being adjustable to a fixed value essentially lower than that of the first seal chamber on the propeller side; andpressure regulating devices for adjusting a pressure of a third chamber located between the first seal chamber on the propeller side and the second seal chamber furthest from the propeller to a value between the pressure values of the first and the second seal chambers by adjusting a pressure loss caused by a flow rate of liquid acting as a medium.2. An arrangement according to claim 1 , comprising: at least one of a choker or flow control valve claim 1 , wherein the pressure regulating devices operate in response to a pressure loss ...

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Номер записи: 9
09-01-2014 дата публикации

Sealing device

Номер: US20140008872A1
Автор: Hideyuki Inoue
Принадлежит: Eagle Industry Co Ltd

A sealing device is provided with a floating ring between an outer periphery of a rotating shaft and an inner periphery of a casing and is characterized in that a turn-stopping means is provided to a single point in a circumferential direction of the floating ring, and a groove for generating dynamic pressure is provided in unequal distribution in the circumferential direction to an inner peripheral surface of the floating ring, wherein a dynamic pressure is generated by a dynamic pressure groove provided to the inner peripheral surface of the floating ring and is employed to thereby match together the center of the rotating shaft and the floating ring.

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Номер записи: 10
09-01-2014 дата публикации

SEALING DEVICE

Номер: US20140008873A1
Автор: INOUE Hideyuki
Принадлежит: EAGLE INDUSTRY CO., LTD.

A sealing device is provided with a floating ring between an outer periphery of a rotating shaft and an inner periphery of a casing and is characterized by including a plurality of inversely directed dynamic pressure generation grooves for creating an action whereby a sealed fluid attempting to leak out is pushed back. The plurality of inversely directed dynamic pressure generation grooves are provided in a circumferential direction to the inner peripheral surface of the floating ring, and thereby the amount of leaking of the sealed fluid is reduced and the center of the floating ring and the center of the rotating shaft are matched together. 1. A sealing device provided with a floating ring between an outer periphery of a rotating shaft and an inner periphery of a casing , the sealing device being characterized in that a plurality of inversely directed dynamic pressure generation grooves for creating an action whereby a sealed fluid attempting to leak out is pushed back upstream are provided in a circumferential direction to an inner peripheral surface of the floating ring.2. A sealing device provided with a floating ring between an outer periphery of a rotating shaft and an inner periphery of a casing , the sealing device being characterized in that a barrier fluid supply hole for supplying a barrier fluid toward an inner peripheral surface of the floating ring is provided , and a plurality of inversely directed dynamic pressure generation grooves for creating an action whereby a sealed fluid attempting to leak out is pushed back upstream are provided in the circumferential direction to an inner peripheral surface of the floating ring.3. The sealing device according to claim 2 , characterized in that a plurality of the barrier fluid supply holes are provided in the circumferential direction claim 2 , an inner periphery groove is provided to the inner peripheral surface of the floating ring so as to connect the plurality of barrier fluid supply holes claim 2 , and ...

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Номер записи: 11
06-02-2014 дата публикации

DYNAMIC BACKUP RING ASSEMBLY

Номер: US20140035238A1
Автор: Dietle Lannie Laroy, RICHIE AARON PAUL
Принадлежит: Kalsi Engineering, Inc.

A seal backup ring assembly is provided that eliminates fluid differential pressure acting radially on the backup ring, preventing collapse of the backup ring against a shaft. The backup ring is assembled so that the initial clearance (extrusion gap) between the backup ring and relatively rotating member is not affected by the differential pressure acting across the assembly. This allows for an initially small extrusion gap to be present throughout the differential pressure range. 1. A sealing assembly comprising:a bulkhead housing having a portion thereof exposed to a first fluid having a pressure and having a portion thereof exposed to a second fluid, and establishing an internal cavity having a locating shoulder facing in a generally axial direction;a shaft having a portion thereof exposed to said first fluid and a portion thereof exposed to said second fluid, said shaft defining an externally-oriented sealing surface of generally cylindrical form, at least part of said sealing surface being located at least partially within said bulkhead housing and being relatively movable with respect to said bulkhead housing;a retainer located radially outward of at least a portion of said shaft and surrounding at least a portion of said shaft, said retainer defining a retaining shoulder facing generally toward said locating shoulder of said bulkhead housing;a backup ring of generally circular form located between said retaining shoulder and said locating shoulder, and having a first ring end with at least a portion thereof facing said retaining shoulder and a second ring end having at least a portion thereof facing said locating shoulder, said first and second ring ends facing in generally opposite directions, said backup ring having a ring inner surface facing generally inward toward said shaft sealing surface and establishing an extrusion gap clearance therewith, and having a ring outer surface facing generally radially outward, said backup ring having radial thickness ...

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Номер записи: 12
13-02-2014 дата публикации

SEALING GASKET AND SEED HOUSING FOR A SEEDER AND SEEDER COMPRISING SUCH A SEED HOUSING

Номер: US20140041564A1
Автор: Gilstring Gert
Принадлежит: Vaderstad-Verken AB

A sealing gasket made of a resilient rubber material or rubber-like material. The sealing gasket is formed as a rotationally symmetric body with a substantially constant cross-sectional profile. The cross-sectional profile includes: a first sealing part located furthest away from a center of rotation of the body and a second sealing part located radially inside the first sealing part, as viewed in the radial direction. An open space is defined by the first and second sealing parts. The second sealing part essentially curves through an angle away from the center of rotation. A seed housing can include such a seal and a seeder can include such a seed housing. 125-. (canceled)26. A sealing gasket substantially made of a resilient rubber material or rubber-like material ,the sealing gasket being formed as a rotationally symmetric body with a substantially constant cross-sectional profile, the cross-sectional profile including:a first sealing part located furthest away from a center of rotation of the body, anda second sealing part located radially inside said first sealing part, as viewed in the radial direction,an open space being defined by the first and second sealing parts,wherein the second sealing part essentially curves through an angle away from the center of rotation, andwherein the sealing gasket further comprises an attachment portion, wherein the sealing parts extend from a first side of the main plane and the attachment portion extends from a second side of the main plane.27. A sealing gasket according to claim 26 , wherein the second sealing part is formed as a sealing lip with a free end claim 26 , or a sealing lip with a free end which has a portion of thicker material.28. A sealing gasket according to claim 26 , wherein the sealing gasket has a base portion and the second sealing part claim 26 , as viewed in the axial direction claim 26 , extends further away from the base portion than the first sealing part.29. A sealing gasket according to claim 28 , ...

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Номер записи: 13
13-02-2014 дата публикации

RADIAL SHAFT SEAL AND ASSEMBLY THEREWITH

Номер: US20140042709A1
Автор: Sedlar Brent R.
Принадлежит:

A radial shaft seal and assembly are provided. The seal has an annular mounting portion and a seal body bonded thereto. The seal body extends to a seal lip extending between an oil-side end and a free air-side end. An annular bridge extends between the seal lip and a central portion of the seal body in radially overlying relation to the seal lip. A primary dust lip extends from the air-side end and has an annular rib configured for sealed abutment with a running surface of a shaft. The annular rib has at least one vent. An auxiliary dust lip extends from the central portion of the seal body to a free end configured for sealed abutment with the shaft. The free end of the auxiliary dust lip has at least one vent spaced circumferentially from the at least one vent in the annular rib. 1. A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air-side of the shaft seal from an oil-side of the shaft seal , comprising:an annular mounting portion;a seal body bonded to said mounting portion;a seal lip having an annular sealing surface extending between an oil-side end and a free air-side end, said sealing surface being configured to extend axially along the shaft;an annular bridge connected to said oil-side end of said seal lip by a hinge and to a central portion of said seal body by another hinge, said bridge extending in radially overlying relation to said seal lip;a primary dust lip extending from said air-side end, said primary dust lip having an annular rib configured for sealed abutment with a running surface of the shaft, said annular rib having at least one rib vent; andan auxiliary dust lip extending from said central portion of said seal body to a free end configured for sealed abutment with the running surface of the shaft, said free end of said auxiliary dust lip having at least one lip vent spaced circumferentially from said at least one rib vent in said annular rib.2. The radial shaft seal of wherein said primary dust ...

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Номер записи: 14
20-02-2014 дата публикации

Seal Arrangement for a Rotating Ship Propeller Shaft

Номер: US20140048461A1
Автор: Fangauf Carlos, Wrage Marko
Принадлежит: BLOHM + VOSS INDUSTRIES GMBH

A seal arrangement for a ship's propeller shaft includes at least one oil-filled seal chamber bounded by seal rings around the shaft, as well as an oil reservoir tank, an oil supply line connecting the tank to the bottom portion of the seal chamber, an oil circulation pump interposed in the supply line between the tank and the seal chamber, and an oil return line communicating from the upper portion of the seal chamber back to the tank. Thereby, oil is continuously circulated through the seal chamber, and thereby flushes out any contaminant particles, air or water that might enter the seal chamber. 1. A seal apparatus for sealing around a propeller shaft of a watercraft where said propeller shaft penetrates through a hull of said watercraft from a hull interior side to a hull exterior side , comprising a seal arrangement and an oil circulation arrangement , wherein said seal arrangement comprises a first oil-filled seal chamber bounded between first and second seal rings that are arranged circumferentially around said shaft and axially spaced from one another along said shaft , and said oil circulation arrangement comprises a first oil tank , a first oil supply line communicating from said first oil tank to said first oil-filled seal chamber , a first circulation pump interposed in said first oil supply line between said first oil tank and said first oil-filled seal chamber , a first oil return line communicating from said first oil-filled seal chamber to said first oil tank , and an oil in said first oil tank , said first oil supply line , said first circulation pump , said first oil-filled seal chamber , and said first oil return line.2. The seal apparatus according to claim 1 , wherein said first oil supply line connects to and communicates into a lower portion of said first oil-filled seal chamber claim 1 , and said first oil return line connects to and communicates out of an upper portion of said first oil-filled seal chamber.3. The seal apparatus according to ...

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Номер записи: 15
01-01-2015 дата публикации

OIL DEFLECTOR

Номер: US20150001807A1
Автор: CHO Jeong Bong
Принадлежит:

An oil deflector includes: a ring support disposed to surround the outer periphery of a shaft and having a front surface support portion formed on the air side of the front portion thereof and a rear surface support portion formed on the bearing side of the rear portion thereof; a plurality of teeth mounted along the inner peripheries of the front surface support portion and the rear surface support portion of the ring support, respectively; and movable teeth mounted on the front outermost side (on the air side) of the teeth disposed along the inner periphery of the front surface support portion and on the rear outermost side (on the bearing side) of the teeth disposed along the inner periphery of the rear surface support portion, respectively. 1{'b': 130', '110', '131', '133', '131, 'a ring support () disposed to surround the outer periphery of a shaft () and having a front surface support portion () formed on the air side of the front portion thereof and a rear surface support portion () formed on the bearing side of the rear portion thereof in such a manner as to be spaced apart from the front surface support portion () by a given distance;'}{'b': 150', '131', '133', '130', '150', '110, 'a plurality of teeth () mounted along the inner peripheries of the front surface support portion () and the rear surface support portion () of the ring support (), respectively, each tooth () having the end portion coming into contact with the outer periphery of the shaft () so as to prevent oil from leaking to the air side from the bearing side; and'}{'b': 160', '150', '131', '150', '133, 'movable teeth () mounted on the front outermost side of the teeth () disposed along the inner periphery of the front surface support portion () and on the rear outermost side of the teeth () disposed along the inner periphery of the rear surface support portion (), respectively,'}{'b': 160', '131', '110', '171', '131', '160', '160', '131', '133', '131', '133', '160', '161', '160', '110', '161 ...

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Номер записи: 16
07-01-2016 дата публикации

SEALING DEVICE

Номер: US20160003302A1
Автор: SENO Hiroshi, SHIOTSUKA Ai
Принадлежит:

A sealing device configured to seal a gap on a flange portion side between an outer member and an inner member by being attached to the outer member. A circular plate portion of a metal ring has an extending portion extending opposite to a flange portion. A seal body has a projecting portion and a weir portion, the projecting portion being positioned inward in a diametrical direction from the extending portion and extending toward the flange portion, the weir portion being positioned outward in a diametrical direction from the extending portion and extending toward the flange portion. The projecting portion and the weir portion overlap the extending portion in a diametrical direction, the projecting portion and the weir portion being provided adjacent to the extending portion, thereby forming a labyrinth. The labyrinth has a plurality of labyrinth constituting portions folding back along inner and outer faces of the extending portion in a diametrical direction, and the labyrinth is configured to meander. 1. A sealing device configured to be provided for a mechanical apparatus having an inner member with a flange portion continuously enlarging in a diametrical direction and an outer member rotating relative to the inner member around a shaft of the mechanical apparatus , the sealing device being configured to seal a gap on the flange portion side between the outer member and the inner member by being attached to the outer member , the sealing device comprising:a core member attached to the outer member;a seal body fixed to the core member; anda metal ring having a cylindrical portion fitted to the inner member and having a circular plate portion extending outward in a diametrical direction from an end portion on the flange portion side of the cylindrical portion;the circular plate portion having an extending portion extending opposite to the flange portion;the seal body having a projecting portion and a weir portion, the projecting portion being positioned inward in ...

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Номер записи: 17
07-01-2016 дата публикации

SEALING DEVICE

Номер: US20160003357A1
Автор: KANZAKI Go
Принадлежит: NOK CORPORATION

The invention provides a sealing device having a sliding lip and a labyrinth lip, wherein the sealing device can inhibit the lip from being deformed as the lip even if the labyrinth lip is exposed to the foreign material in the machine outside and is swollen, thereby making the sliding lip protecting function hard to be lost. In order to achieve the object, in a sealing device having a sliding lip which seals so as to prevent foreign material in a machine outside from entering into a machine inside, and a labyrinth lip which makes the foreign material hard to reach the sliding lip, a notch portion for absorbing swelling of the labyrinth lip when the labyrinth lip is exposed to the foreign material and is swollen is provided in a leading end portion of the labyrinth lip. 1. A sealing device comprising:a sliding lip which seals so as to prevent muddy water or salt water in a machine outside from entering into a machine inside; anda labyrinth lip which makes said muddy water or the salt water hard to reach said sliding lip,wherein a notch portion for absorbing swelling of said labyrinth lip when said labyrinth lip is exposed to said muddy water or the salt water and is swollen is provided in a leading end portion of said labyrinth lip.2. The sealing device according to claim 1 , wherein a second labyrinth lip is provided in the machine inside side of said labyrinth lip.3. The sealing device according to claim 2 , wherein the similar notch portion is provided in a leading end portion of said second labyrinth lip.4. The sealing device according to claim 3 , wherein the notch portion provided in the leading end portion of said labyrinth lip and the notch portion provided in said second labyrinth lip are arranged so as to be displaced circumferentially.5. The sealing device according to claim 1 , wherein said sealing device is used as a hub bearing seal for a vehicle such as a motor vehicle.6. The sealing device according to claim 2 , wherein said sealing device is used as ...

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Номер записи: 18
03-01-2019 дата публикации

COMPRESSOR SYSTEM

Номер: US20190003597A1
Автор: Nakasaki Keita, Shimakawa Tsukasa
Принадлежит: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION

A compressor system includes: a compressor including a rotor that rotates around an axis and a bearing device that supports the rotor; a lubricant tank in which a lubricant is stored; a lubricant supply line through which the lubricant is supplied from the lubricant tank to the bearing device; a lubricant return line through which the lubricant is returned from the bearing device to the lubricant tank; and a seal gas supply line through which a seal gas supplied to the compressor flows and is introduced to the compressor via an inside of the lubricant tank. 1. A compressor system , comprising: a rotor that rotates around an axis and', 'a bearing device that supports the rotor;, 'a compressor that includesa lubricant tank in which a lubricant is stored;a lubricant supply line through which the lubricant is supplied from the lubricant tank to the bearing device;a lubricant return line through which the lubricant is returned from the bearing device to the lubricant tank; anda seal gas supply line through which a seal gas supplied to the compressor flows and is introduced to the compressor via an inside of the lubricant tank.2. The compressor system according to claim 1 , wherein the seal gas supply line runs through a liquefied lubricant stored in the lubricant tank.3. The compressor system according to claim 1 , wherein the lubricant tank includes a lubricant heater that is disposed in a stored liquefied lubricant and that heats the lubricant. The present invention relates to a compressor system.There is a centrifugal compressor in which an end portion of a rotary shaft protrudes to the outside of a casing so as to input or output a rotation of the rotary shaft that is rotatably provided with respect to a casing. In the centrifugal compressor, a dry gas seal is provided so as to inhibit a working fluid from leaking a gap between the rotary shaft and the casing in the end portion of the casing to the outside.For example, a compressor having the dry gas seal is ...

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Номер записи: 19
08-01-2015 дата публикации

SEALING ASSEMBLY ADAPTED TO BE INSERTED BETWEEN TWO RELATIVELY SLIDABLE MEMBERS

Номер: US20150008647A1
Автор: Bresso Marco, Scaramozzino Francesco
Принадлежит:

A sealing assembly insertable between a rod and a guiding bush of a shock absorber to form a sealing and guiding unit for the rod is provided. The assembly includes an elastomeric ring having a first and a second annular lip which extend axially and radially overhanging; and a reinforcing ring integrally coupled to the elastomeric ring, radially on the side of the first and of the second sealing lip. The reinforcing ring is integrally coupled in one piece with the elastomeric ring, on the exterior of the elastomeric ring and on the side of a lateral surface thereof facing towards the lips, the reinforcing ring coupling in sliding manner with the rod to serve as guide therefor. The sealing ring coupling by interference with the guiding bush. 1. A sealing assembly insertable between a first and a second mechanical member moving in linear reciprocating manner , insertable between a rod and a guiding bush of a shock absorber , the sealing assembly comprising:a sealing ring made of an elastomeric material and having at least a first and a second elastically deformable annular sealing lip that extend at least in part axially and radially overhanging from the sealing ring, the first lip starting from a first axial end of the sealing ring and the second lip starting from a second axial end of the sealing ring, opposite to the first end; anda reinforcing ring integrally coupled to the sealing ring, radially on the side of the first and second sealing lip; wherein, in combination:i) the reinforcing ring is integrally coupled in one piece with the sealing ring, on the exterior of the sealing ring and on the side of a first radial lateral surface of the sealing ring facing the same side as the overhanging extension of the first and second lips;ii) the reinforcing ring is designed to couple in a sliding manner with the first member in order to guide the relative sliding between the first and the second member;iii) the sealing ring is designed in combination with the reinforcing ...

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Номер записи: 20
12-01-2017 дата публикации

SEALING RING

Номер: US20170009889A1
Автор: HOSOE Takeshi, INOUE Hideyuki, SEKI Masatoshi, Tokunaga Yuichiro
Принадлежит:

Provided is a sealing device capable of suppressing leakage of a fluid to be sealed while reducing rotary torque regardless of rotational direction. In a sealing ring () slides against a side wall surface on a low pressure side of an annular groove, a dynamic pressure generating groove () that includes a first groove () having a constant width in a radial direction and extending in a circumferential direction and a second groove () extending from a center position of the first groove () in the circumferential direction to an inner circumferential surface and guiding a fluid to be sealed into the first groove () is provided on a sliding surface side which slides against the side wall surface. The first groove () is provided at a position within a sliding region in which the sealing ring slides against the side wall surface. 1. A sealing ring which is mounted to an annular groove provided on an outer circumference of a shaft and seals an annular gap between the shaft and a housing that rotate relative to each other to maintain fluid pressure of a region to be sealed that is configured such that the fluid pressure thereof changes ,wherein the sealing ring slides against a side wall surface on a low pressure side of the annular groove,a dynamic pressure generating groove which includes a first groove having a constant width in a radial direction and extending in a circumferential direction and a second groove extending from a center position of the first groove in the circumferential direction to an inner circumferential surface and guiding a fluid to be sealed into the first groove is provided on a sliding surface side which slides against the side wall surface, andthe first groove is provided at a position within a sliding region which slides against the side wall surface.2. The sealing ring according to claim 1 , wherein a groove bottom of the first groove is configured such that both end sides thereof are shallower than a center in the circumferential direction. ...

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Номер записи: 21
27-01-2022 дата публикации

ROLLING BEARING HAVING IMPROVED SEALABILITY

Номер: US20220025931A1
Автор: KIM Kyu Bok, LEE Young Keun
Принадлежит: BEARINGART

A sealing member of a rolling bearing is formed in a structure in which an elastic sealing portion is attached to a frame, and the elastic sealing portion may comprise a first sealing portion formed on one end portion of the frame and a second sealing portion formed on the other end portion of the frame. The first sealing portion may be inserted into and mounted to a coupling groove formed in the second member, and the second sealing portion may comprise an axial sealing lip extending in the axial direction from the frame and a radial sealing lip extending in the radial direction from the frame. The axial sealing lip and the radial sealing lip of the second sealing portion may be positioned adjacent to the first member and may be configured to perform a sealing in a non-contact manner. 1. A rolling bearing , comprising:a first member having a raceway for rolling elements formed on one side of the first member;a second member provided to be spaced apart from the first member in a radial direction and having a raceway for the rolling elements formed on one side of the second member;the rolling elements provided between the first member and the second member; anda sealing member provided in an axial end portion of the rolling bearing between the first member and the second member,wherein the sealing member is formed in a structure in which an elastic sealing portion is attached to a frame,the elastic sealing portion comprises a first sealing portion formed on one end portion of the frame and a second sealing portion formed on the other end portion of the frame,the first sealing portion is inserted into and mounted to a coupling groove formed in the second member,the second sealing portion comprises an axial sealing lip extending in an axial direction from the frame and a radial sealing lip extending in the radial direction from the frame,the axial sealing lip and the radial sealing lip of the second sealing portion are positioned adjacent to the first member and are ...

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Номер записи: 22
14-01-2016 дата публикации

SHAFT SEAL DEVICE AND ROTARY MACHINE

Номер: US20160010751A1
Автор: NISHIMOTO Shin, OYAMA Hiroharu, SHINOHARA Tanehiro, UEHARA Hidekazu
Принадлежит:

Disclosed is a shaft seal device comprising: a seal body made by layering a plurality of thin-plate seal pieces in the circumferential direction of the rotor, and a housing that is fixed to the stator, holds the seal body so as to surround the same from radially outside, and includes a first facing surface that faces the high-pressure-side edge of the seal body and a second facing surface that faces the low-pressure-side edge of the seal body. The high-pressure-side clearance between the seal body and the first facing surface is smaller than the low-pressure-side clearance between the seal body and the second facing surface, and a slope part that slopes gradually toward the high-pressure side toward the tip end, which is on the rotor side, is formed in the low-pressure-side edge of each thin-plate seal piece of the seal body. 1. A shaft seal device that partitions a space between a rotor and a stator into a high-pressure side and a low-pressure side , the shaft seal device comprising:a seal body that includes a plurality of thin-plate seal pieces extending toward the rotor from the stator and laminated in a circumferential direction of the rotor; anda housing that is fixed to the stator and holds the seal body so as to surround the seal body from the outside in a radial direction, and includes a first facing surface facing a high-pressure-side edge of the seal body and a second facing surface facing a low-pressure-side edge of the seal body,wherein a high-pressure-side clearance between the seal body and the first facing surface is set to be smaller than a low-pressure-side clearance between the seal body and the second facing surface, anda slope part, which gradually slopes to the high-pressure side toward a tip close to the rotor, is formed at the low-pressure-side edge of each thin-plate seal piece of the seal body.2. The shaft seal device according to claim 1 ,wherein the slope part is formed from the tip to a position corresponding to an end of the second ...

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Номер записи: 23
10-01-2019 дата публикации

SEALING STRUCTURE OF RECIPROCATING PLUNGER PUMP

Номер: US20190010941A1
Автор: Chen Bo, Li Xiaorong, Yang Fazheng, Ying Zhenxing
Принадлежит:

A sealing structure of a reciprocating plunger pump, comprising a pump seat, a pump body assembly, a first sealing ring, and a second sealing ring; the first sealing ring including a first sealing body which is an integrally formed annular body structure including an upper layer, a lower layer, and a V-shaped groove; wherein the V-shaped groove divides the bottom surface of the lower layer into an inner portion and an outer portion, and the inner portion thereof is higher than the outer portion; the second sealing ring includes a second sealing body which is integrally formed and includes an upper ring piece and a lower ring piece having an included angle disposed therebetween; the sealing body includes an annular rib disposed in the middle of an outer wall thereof. The sealing structure allows the reciprocating plunger pump to have a good sealing effect and a long service life. 1121134353. a sealing structure of a reciprocating plunger pump , comprising a pump seat () , a pump body assembly () disposed at a bottom of the pump seat () , a hole disposed in the pump seat () , a plunger rod () installed inside the hole , a first sealing ring () disposed in a small retaining groove of the plunger rod () , and a second sealing ring () disposed in a large retaining groove of the plunger rod ();{'b': 4', '6', '7', '8', '9', '8, 'wherein the first sealing ring () includes a first sealing body () which is an integrally formed annular body structure including an upper layer (), a lower layer (), and a V-shaped groove () disposed on a bottom surface of the lower layer ();'}{'b': 9', '8', '10', '11', '10', '11', '9', '12', '13', '9', '8', '12', '13', '7', '8', '14, 'wherein the V-shaped groove () divides the bottom surface of the lower layer () into an inner portion () and an outer portion (), and the inner portion () thereof is higher than the outer portion (); the V-shaped groove () includes a V-shaped tension spring () disposed therein and support edges () disposed between ...

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Номер записи: 24
14-01-2021 дата публикации

SEAL PROTECTION MECHANISM

Номер: US20210010600A1
Автор: McCartney Neil
Принадлежит:

A seal protection mechanism for a shaft seal of a land-based vehicle is described. The seal protection mechanism comprises a fixed part and a rotary part. The fixed part is fixed relative to the vehicle. The rotary part is rotatable relative to the fixed part about an axis. The rotary part is configured to rotate with a shaft about which the shaft seal is disposed. One of the fixed part and the rotary part comprises an axial opening. The other of the fixed part and the rotary part is at least partly received in the axial opening. The fixed part and the rotary part define a passageway. At least one of the fixed part and the rotary part comprises a debris breaking portion. The debris breaking portion is disposed in the passageway. In use, rotation of the rotary part relative to the fixed part causes the debris breaking portion to break apart any debris passing through said passageway towards the shaft seal. The seal protection mechanism therefore acts to protect the shaft seal by breaking apart debris before said debris can reach the shaft seal. This is beneficial because the shaft seal is a vulnerable component which can be damaged by debris. 1. A seal protection mechanism for a shaft seal of a land-based vehicle , the seal protection mechanism comprising:a fixed part which is fixable relative to the vehicle;a rotary part which is rotatable relative to the fixed part about an axis, the rotary part being configured to rotate with a shaft about which the shaft seal is disposed;wherein one of the fixed part and the rotary part comprises an axial opening, the other of the fixed part and the rotary part being at least partly receivable in the axial opening, the fixed part and the rotary part thereby defining a passageway;wherein at least one of the fixed part and the rotary part comprises a debris breaking portion, the debris breaking portion being disposed in the passageway; andwherein in use rotation of the rotary part relative to the fixed part causes the debris ...

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Номер записи: 25
10-01-2019 дата публикации

SEA WATER SEAL WITHOUT OIL LUBRICATION FOR PODS

Номер: US20190011050A1
Автор: VINCENT Loic
Принадлежит:

Sealing device for a propeller shaft of a marine vehicle propulsion unit including a plurality of sealing lips axially offset relative to each other, with a receiving space for a hydraulic fluid delimited by two adjacent sealing lips, at least one buffer space axially offset with respect to the receiving space and delimited by two adjacent sealing lips, whereby the sealing device includes suitable feeding means for supplying the buffer space with a buffer fluid. The device includes a sampling circuit able to sample fluid included in the buffer space and a monitoring device able to check parameters of the fluid sampled by the sampling circuit. 1. Sealing device for a propeller shaft of a marine vehicle propulsion unit , comprising a plurality of sealing lips axially offset relative to one another , whereby a receiving space for a hydraulic fluid is delimited by two adjacent sealing lips , at least one buffer space is axially offset with respect to the receiving space and delimited by two adjacent sealing lips , whereby the sealing device contains feeding means able to supply the buffer space with a buffer fluid , wherein it contains a sampling circuit able to sample fluid contained in the buffer space and a monitoring device able to check parameters of the fluid sampled by the sampling circuit.2. The sealing device according to claim 1 , whereby the feeding means contain a tank for buffer fluid claim 1 , the tank of buffer fluid being pressurized.3. The sealing device according to claim 1 , whereby the feeding means contain a buffer fluid circulation circuit claim 1 , the circulation circuit comprising a thermosyphon.4. The sealing device according to claim 1 , whereby the buffer fluid contains at least 95% fresh water.5. The sealing device according to claim 1 , whereby the buffer fluid includes an icing inhibitor and/or a corrosion-inhibiting additive.6. The sealing device according to claim 1 , whereby the buffer fluid is a liquid selected to have a solidification ...

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Номер записи: 26
10-01-2019 дата публикации

HEAT TRANSFER INTERRUPTION FOR IMPROVED FIRE RESISTANCE/PROOF PERFORMANCE

Номер: US20190011068A1
Автор: Flynn William T., Maiville Randolph L.
Принадлежит:

A fluid coupling includes a first adapter having at least one seal groove in an inner diameter surface of the first adapter, and at least one interruption in the inner diameter surface adjacent to the at least one seal groove. The fluid coupling may include a second adapter having an outer diameter surface engaging with at least a portion of the inner diameter surface of the first adapter to form a conductor path between the first adapter and the second adapter. The fluid coupling may further include at least one seal disposed in the at least one seal groove to provide a sealed connection between the first adapter and the second adapter. The at least one interruption may be configured to interrupt the conductor path in a region around the at least one seal. 1. A fluid coupling comprising:a first adapter having at least one seal groove in an inner diameter surface of the first adapter, and at least one interruption in the inner diameter surface adjacent to the at least one seal groove;a second adapter having an outer diameter surface engaging with at least a portion of the inner diameter surface of the first adapter to form a conductor path between the first adapter and the second adapter; andat least one seal disposed in the at least one seal groove to provide a sealed connection between the first adapter and the second adapter;wherein the at least one interruption is configured to interrupt the conductor path in a region around the at least one seal.2. The fluid coupling of claim 1 , wherein the at least one interruption is in the form of a groove extending at least partially around the inner diameter surface of the first adapter in a circumferential direction.3. The fluid coupling of claim 1 , wherein the first adapter includes a web disposed between the at least one seal groove and the at least one interruption.4. The fluid coupling of claim 3 , wherein the web has a thickness in an axial direction that is smaller than a width of at least one of the at least one ...

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Номер записи: 27
09-01-2020 дата публикации

Wiper Ring Assembly with Energizing Member

Номер: US20200011327A1
Автор: JR. John E., Stachowiak
Принадлежит:

A downhole pump is used for a reciprocating pump system having a rod string disposed in a tubing string. A barrel of the pump is disposed, and a plunger of the pump coupled to the rod string is movably disposed in the barrel. The plunger has an external surface disposed at an annular gap relative to the barrel's internal surface. The external surface has circumferential grooves defined thereabout that hold wipers. An inner ring of the wipers composed of a swellable material is engaged in the one or more circumferential grooves, while an outer ring composed of a second material is disposed about the inner ring. The swellable material of the inner ring energizes the outer ring in slideable engagement with the internal surface of the barrel. 1. A downhole pump for a reciprocating pump system having a rod string disposed in a tubing string , the pump comprising:a barrel disposed in the tubing string and having an internal surface;a plunger coupled to the rod string and movably disposed in the barrel, the plunger having an external surface disposed at an annular clearance relative to the internal surface, the external surface having one or more circumferential grooves defined thereabout; and an inner ring composed of a swellable material and engaged in the one or more circumferential grooves, and', 'an outer ring composed of a second material and disposed about the inner ring, the swellable material of the inner ring energizing the outer ring across the annular clearance into slideable engagement with the internal surface of the barrel., 'one or more wipers disposed in the one or more circumferential grooves on the external surface of the plunger, each of the one or more wipers comprising2. The pump of claim 1 , wherein the swellable material is selected from the group consisting of elastomer claim 1 , ethylene propylene diene M-class rubber (EPDM) claim 1 , ethylene propylene copolymer (EPM) rubber claim 1 , styrene butadiene rubber claim 1 , natural rubber claim 1 , ...

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Номер записи: 28
09-01-2020 дата публикации

SEAL DEVICE

Номер: US20200011342A1
Автор: HIROMATSU Jun, IGUCHI Tetsuya, INOUE Hideyuki, KASAHARA Hidetoshi, KIKUCHI Ryu, KIMURA Wataru, KUROKI Yasuhiro, Tokunaga Yuichiro
Принадлежит:

In an exemplary embodiment, a seal device that seals between a housing and a rotation shaft passing through the housing includes a floating ring arranged with a gap h with respect to the rotation shaft , wherein the floating ring includes at least one supporting means that supports in the circumferential direction. In the seal device, the floating ring follows movement of the rotation shaft even upon running for a long time, a clearance between the rotation shaft and the seal ring can be properly held, and the sealing operation by the floating ring and the vibration damping function can be exerted, and the seal device is easily assembled. 1. A seal device that seals between a housing and a rotation shaft passing through the housing , the seal device being characterized by comprising:a floating ring arranged with a gap with respect to the rotation shaft, the seal device being characterized in thatthe floating ring includes at least one supporting means that contactlessly supports in the circumferential direction.2. The seal device according to claim 1 , characterized in thatthe supporting means is arranged symmetrically with respect to a vertical line passing through center of the floating ring.3. The seal device according to claim 1 , characterized in thatthe supporting means includes a first magnet arranged in the housing, the first magnet having a magnetic pole face directed in the circumferential direction, and a second magnet arranged in the floating ring, the second magnet having a magnetic pole face directed in the circumferential direction, andthe first magnet and the second magnet are arranged so that the same poles oppose each other.4. The seal device according to claim 3 , characterized in thatmagnetic pole adjacent faces of the first magnet and the second magnet where the N pole and the S pole are adjacent to each other are respectively surrounded by a non-magnetic material.5. The seal device according to claim 2 , characterized in thatthe supporting ...

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Номер записи: 29
09-01-2020 дата публикации

Seal device

Номер: US20200011425A1
Автор: Hidetoshi Kasahara, Hideyuki Inoue, Jun Hiromatsu, Ryu KIKUCHI, Tetsuya Iguchi, Wataru Kimura, Yasuhiro Kuroki, Yuichiro Tokunaga
Принадлежит: Eagle Industry Co Ltd

In an exemplary embodiment, a seal device 10 for sealing between a housing 11 and a rotating shaft 20 which penetrates through the housing 11 includes a floating ring 15 arranged on the rotating shaft 20 with a gap h therebetween, and is provided with a spiral foil 14 arranged between the floating ring 15 and the housing 11 . In the seal device, the floating ring exhibits a sealing action by following the movement of the rotating shaft and can damp vibration of the rotating shaft.

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Номер записи: 30
15-01-2015 дата публикации

Shaft seal assembly

Номер: US20150014940A1
Автор: Hoehle Neil F., Horner Tom
Принадлежит:

An illustrative embodiment of a shaft seal assembly generally includes a fixed stator, a floating stator, and a sealing member. In the illustrative embodiment the fixed stator may be formed with one or more fluid conduits that are in fluid communication with one or fluid conduits formed in the floating stator. The fluid conduits in the floating stator may be in fluid communication with one or more fluid conduits formed in a sealing member. A rotational interface may exist between the sealing member and a shaft, and the various fluid conduits may be configured to create a fluid barrier at that interface. Other embodiments of a shaft seal assembly may create a fluid barrier at a rotational interface between a rotor and a floating stator. 1. A shaft seal assembly comprising:a. a fixed stator configured for engagement with a housing, wherein said fixed stator includes an annular recess along a portion of the radial-interior surface thereof; i. a floating stator, wherein a radial-exterior surface of said floating stator is separated from said annular groove radial-interior surface in the radial dimension by a predetermined amount to create a first clearance between said floating stator and said fixed stator, and wherein a radial-interior surface of said floating stator is substantially concave in shape; and,', 'ii. a sealing member, wherein said sealing member includes a radial-exterior surface with a substantially convex shape that corresponds to the radial-interior surface of said floating stator so as to create a spherical interface therebetween, and wherein said sealing member is configured to be positioned adjacent a shaft extend from said housing; and,', 'iii. a plurality of radial bores extending from said radial-exterior surface of said sealing member to said radial-interior surface thereof, and wherein a pressurized sealing fluid may be in fluid communication with said plurality of radial bores such that said pressurized sealing fluid moves through said ...

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Номер записи: 31
18-01-2018 дата публикации

Hydraulic auto-tensioner

Номер: US20180017142A1
Автор: Satoshi Kitano, Yuta Mochizuki
Принадлежит: NTN Corp

A hydraulic auto-tensioner includes a rod inserted in a cylinder having a bottom and containing hydraulic oil, and a hydraulic damper in the cylinder for damping the push-in force that tends to push the cylinder and the rod in the direction in which the rod is pushed into the cylinder. An oil seal including a dust lip on the inner periphery thereof seals an open end of the cylinder. A rose-shaped snap ring is formed integral with the oil seal.

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Номер записи: 32
18-01-2018 дата публикации

SEALING DEVICE

Номер: US20180017164A1
Автор: TARUKAWA Yuichi
Принадлежит:

A sealing device has a main lip sealing sealed fluid in a machine inside and a sub lip preventing intrusion of foreign materials in a machine outside, and structured such that both of the lips slidably come into contact with a peripheral surface of a shaft, wherein the sub lip is formed into a shape which is vertical to an axial direction or a shape which is directed to the main lip side, and a stepped shape is provided in the sub lip, the stepped shape unevenly distributing a generation position of a contact pressure peak in relation to the shaft in the sub lip. The sealing device can achieve both the shaft inserting property and the sealing performance in a sealing device having a main lip which seals sealed fluid in a machine inside, and a sub lip which seals foreign materials in a machine outside. 1. A sealing device comprising:a main lip which seals sealed fluid in a machine inside;a sub lip which prevents intrusion of foreign materials in a machine outside; andboth the lips slidably coming into contact with a peripheral surface of a shaft,wherein the sub lip is formed into a shape which is vertical to an axial direction of the shaft or a shape which is directed to the main lip side, and a stepped shape is provided in the sub lip, the stepped shape unevenly distributing a generation position of a contact pressure peak in relation to the shaft in the sub lip.2. The sealing device according to claim 1 , wherein the stepped shape is provided as a projection having a triangular cross section and provided in a contact portion in the sub lip with the shaft. This application is a U.S. National Stage Application of International Application No. PCT/JP2016/055762, filed on Feb. 26, 2016, and published in Japanese as WO 2016/147835 A1 on Sep. 22, 2016 and claims priority to Japanese Application No. 2015-054447, filed on Mar. 18, 2015. The entire disclosures of the above applications are incorporated herein by reference.The present invention relates to a sealing device ...

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Номер записи: 33
16-01-2020 дата публикации

SEAL DEVICE

Номер: US20200018400A1
Автор: HIROMATSU Jun, IGUCHI Tetsuya, INOUE Hideyuki, KASAHARA Hidetoshi, KIKUCHI Ryu, KIMURA Wataru, KUROKI Yasuhiro, Tokunaga Yuichiro
Принадлежит:

In exemplary embodiment, a seal device that seals between a housing and a rotation shaft passing through the housing includes a floating ring arranged with a gap h with respect to the rotation shaft , wherein the floating ring includes an aligning means that contactlessly aligns a position of the floating ring . In the seal device, the automatic aligning operation of the seal ring is maintained even upon running for a long time, a clearance between the rotation shaft and the seal ring can be properly held, and the sealing operation by the seal ring and the vibration damping function can be exerted. 1. A seal device that seals between a housing and a rotation shaft passing through the housing , the seal device being characterized by comprising:a floating ring arranged with a gap with respect to the rotation shaft, the seal device being characterized in thatthe floating ring includes an aligning means that contactlessly aligns a position of the floating ring.2. The seal device according to claim 1 , characterized in thatthe aligning means includes a first magnet arranged in the housing, the first magnet having a magnetic pole face directed in the radial direction, and a second magnet arranged in the floating ring, the second magnet having a magnetic pole face directed in the radial direction, andthe first magnet and the second magnet are arranged so that the same poles oppose each other.3. The seal device according to claim 2 , characterized in thatmagnetic pole adjacent faces of the first magnet and the second magnet where the N pole and the S pole are adjacent to each other are surrounded by a non-magnetic material. The present invention relates to a seal device that seals between a housing and a rotation shaft passing through the housing, and in particular, relates to a seal device including a floating ring used for a rotation shaft of a fluid machine such as a pump.Conventionally, in a rotating fluid machine such as a pump, in order to seal a fluid, a floating ...

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Номер записи: 34
16-01-2020 дата публикации

SEAL DEVICE

Номер: US20200018401A1
Автор: HIROMATSU Jun, IGUCHI Tetsuya, INOUE Hideyuki, KASAHARA Hidetoshi, KIKUCHI Ryu, KIMURA Wataru, KUROKI Yasuhiro, Tokunaga Yuichiro
Принадлежит:

In an exemplary embodiment, a seal device for sealing between a housing and a rotating shaft which penetrates through the housing includes a floating ring arranged on the rotating shaft with a first gap h therebetween, wherein the floating ring is provided with a squeeze film damper with a second gap g being formed as a narrow gap between the squeeze film damper and the housing In the seal device, the floating ring can exhibit a sealing action by following the movement of the rotating shaft and can reduce vibrations in the circumferential direction and the radial direction of the rotating shaft. 1. A seal device for sealing between a housing and a rotating shaft which penetrates through the housing , the seal device being characterized in thatthe seal device includes a floating ring arranged on the rotating shaft with a first gap therebetween, andthe floating ring is provided with a squeeze film damper with a second gap being formed as a narrow gap between the squeeze film damper and the housing.2. The seal device according to claim 1 , characterized in that the second gap is 0.1 to 0.3 mm. The present invention relates to a seal device for sealing between a housing and a rotating shaft which penetrates through the housing, and, particularly, relates to a seal device provided with a floating ring used for the rotating shaft of a fluid machine such as a pump.Conventionally, in a rotating fluid machine such as a pump, a floating seal is used for sealing a fluid, and, for example, the one shown in is known (Hereinafter, referred to as “a conventional art 1”. For example, see Patent Document 1.). The conventional art is provided with a rotating shaft of a fluid machine, a sleeve attached to the outer periphery of the rotating shaft and rotating integrally with the rotating shaft, a seal ring loosely fitted with a clearance to the sleeve , leaf springs provided at four places on the outer circumference of the seal ring , and a retainer for storing the seal ring , and the ...

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Номер записи: 35
25-01-2018 дата публикации

Seal assembly and method for manufacturing the seal assembly

Номер: US20180023708A1
Автор: Erich Pfandl, Johann Moitzi
Принадлежит: SKF AB

A seal assembly includes a base body having a seal element and a retainer radially spaced from the seal element. The retainer includes a support surface facing the seal element, and a support ring abuts on the support surface of the retainer. The support ring has a first end and a second end circumferentially spaced from the first end, and a portion of the first end extends into a recess of the second end to connect the first end to the second end. Also a method of manufacturing the seal assembly.

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Номер записи: 36
23-01-2020 дата публикации

SEAL RING

Номер: US20200025293A1
Автор: Farris John R., Hall Theodore W., Jacques Jeffrey Michael, Korzendorfer John J., McCaffrey Michael G., Otero Edwin, Paul John E., Stoner Alan W., Vinson Elizabeth F., Wilson Ross
Принадлежит: UNITED TECHNOLOGIES CORPORATION

A seal ring system is provided. The seal ring system comprises a segment defining a slot, a pedal along the slot, and an opening offset from the slot. A retention fastener may be disposed in the opening. A seal ring system is also provided comprising a first segment defining a first opening, a second segment defining a second opening, and a retention fastener extending through the first and second openings. The retention fastener configured to allow relative radial movement of the first segment and the second segment. A seal is further provided comprising a seal ring having a central axis, a petal extending radially inward with respect to the central axis of the seal ring, and a sealing disk axially proximate the seal ring. The sealing disk may have a seal shoe configured as a primary seal. The petal may extend toward the seal shoe. 1. A seal , comprising: 'a first petal extending radially inward with respect to the first central axis of the first seal ring;', 'a first seal ring having a first central axis, the first seal ring comprising 'a second petal axially proximate the first petal, offset from the first petal in a circumferential direction, and extending radially inward with respect to the second central axis of the second seal ring;', 'a second seal ring having a second central axis substantially equal to the first central axis, the second seal ring comprising;'}a sealing disk axially proximate the second seal ring and having a seal shoe configured as a primary seal, wherein the second petal extends toward the seal shoe.2. The seal of claim 1 , wherein the first seal ring comprises a first plurality of separate segments and the second seal ring comprises a second plurality of separate segments.3. The seal of claim 1 , wherein the second seal ring further comprises a lip configured to engage the seal shoe.4. The seal of claim 1 , wherein the first seal ring is on a high-pressure side in a gas turbine engine and the second seal ring is on a low-pressure side in ...

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Номер записи: 37
28-01-2021 дата публикации

SLIDER SEAL WITH NON-CIRCULAR PUCK GEOMETRY

Номер: US20210025496A1
Автор: Kwoka David, Lovett Jeffery A.
Принадлежит:

An assembly is provided that includes a slider seal having a washer and a tubular puck. The washer includes an inner washer surface and an outer washer surface. The inner washer surface extends around an axis of the slider seal and has a non-circular cross-sectional geometry. The inner washer surface forms a washer bore axially through the washer. The outer washer surface extends around the axis and has a cross-sectional geometry with a shape that is different than a shape of the non-circular cross-sectional geometry. The tubular puck projects axially through the washer bore and includes an outer puck surface. The outer puck surface extends around the axis. The outer puck surface is sealingly engaged with and configured to slide axially along the inner washer surface. 1. An assembly for a turbine engine , comprising:a slider seal including a washer and a tubular puck;the washer including an inner washer surface and an outer washer surface, the inner washer surface extending around an axis of the slider seal and having a non-circular cross-sectional geometry, the inner washer surface forming a washer bore axially through the washer, and the outer washer surface extending around the axis and having a cross-sectional geometry with a shape that is different than a shape of the non-circular cross-sectional geometry; andthe tubular puck projecting axially through the washer bore and including an outer puck surface, the outer puck surface extending around the axis, and the outer puck surface sealingly engaged with and configured to slide axially along the inner washer surface.2. The assembly of claim 1 , wherein the non-circular cross-sectional geometry of the inner washer surface is an oval cross-sectional geometry.3. The assembly of claim 1 , wherein the non-circular cross-sectional geometry of the inner washer surface is an elongated cross-sectional geometry with a minor axis dimension and a major axis dimension that is greater than the minor axis dimension.4. The ...

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Номер записи: 38
01-02-2018 дата публикации

SEALING LIP FOR A LOW FRICTION BONDED PISTON SEAL

Номер: US20180031128A1
Автор: Levy Daniel J., Pecak Robert D., PETZOLD Lance A.
Принадлежит:

An annular seal for a low friction bonded piston seal is provided. The annular seal having a central axis and including an annular seal body symmetrically positioned about the central axis. The annular seal is integrally molded to the body and provides a lower seal lip body, and a top seal lip. The top seal lip including a first radial lip thickness T and a second radial lip thickness T. A ratio between second radial lip thickness T to first radial lip thickness T is less than 1.00. The annular seal includes a radial lip height H, and a radial lip overall pressure received thickness T. A ratio of radial lip height H to second radial lip thickness T is greater than or equal to 0.65. The radial lip overall pressure received thickness T is less than or equal to 0.8 mm. The first radial lip thickness T is less than or equal to 0.7 mm, 1. An annular seal for a low friction bonded piston seal , the annular seal having a central axis and comprising:an annular seal body symmetrically positioned about the central axis, and a lower seal lip body, and', [{'b': '1', 'a first radial lip thickness T,'}, {'b': '2', 'a second radial lip thickness T,'}, 'a radial lip height H, and', {'b': '3', 'a radial lip overall pressure received thickness T,'}, {'b': 2', '1, 'wherein a ratio of the second radial lip thickness T to first radial lip thickness T is less than 1.00,'}, {'b': '2', 'wherein a ratio of radial lip height H to second radial lip thickness T is greater than or equal to 0.65,'}, {'b': '3', 'wherein the radial lip overall pressure received thickness T is less than or equal to 0.8 mm,'}, {'b': '1', 'wherein the first radial lip thickness T is less than or equal to 0.7 mm,'}, {'b': 3', '1', '3, 'wherein the radial lip overall pressure received thickness T is determined by the horizontal distance between reference points P and P,'}, {'b': 1', '1', '2, 'wherein the first radial lip thickness T is determined by the horizontal distance between reference points P and P,'}, {'b': 1', ...

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Номер записи: 39
31-01-2019 дата публикации

Seal

Номер: US20190032785A1
Автор: George Edmond, Jonathan Robins, Paul Bowles, Pawel Kwasniewski, Simon ENNOR
Принадлежит: Claverham Ltd

A rotary seal comprises a seal element comprising a disc-shaped body having a first axial side and an opposed second axial side. The seal element further comprises a radially inner central circular opening for receiving a rotary shaft, the opening having an inner periphery for sealing engagement with the shaft. A radially outer rim portion of the seal element comprises an axially facing annular sealing surface provided on the first axial side for sealing engagement in use with an opposed axially facing sealing surface of an adjacent first static housing and an axially facing pocket provided on the second axial side and having an axially facing surface for receiving, in use, an annular elastomeric biasing element. At least one drainage passage is formed through the outer rim portion from an inlet on the second axial side to an outlet on a radially outer portion of the rim portion.

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Номер записи: 40
30-01-2020 дата публикации

SEAL RING

Номер: US20200032907A1
Автор: SAKUMA Katsuyoshi
Принадлежит:

A seal ring is provided in which a ring body configured to be mounted in a mounting groove provided in one of two members, for example, a rotary shaft and a housing, that are configured to be assembled together so as to be relatively displaceable with respect to each other, is provided with a contact portion that comes in contact with the other of the two members, and a cut portion separating the ring body at one position on the circumference of the ring body. In order to eliminate undercorrection of shape that occurs at a portion in the vicinity of the cut portion, thereby reducing the size of a gap that is formed between the seal ring and the mating component when the seal ring is mounted, a thinned structure is provided only at a portion in the vicinity of the cut portion in an outer surface of the ring body other than the contact portion. 1. A seal ring comprising:a ring body configured to be mounted in a mounting groove provided in one of two members that are configured to be assembled together so as to be relatively displaceable with respect to each other;a contact portion provided to the ring body and configured to contact the other of the two members;a cut portion separating the ring body at one position on a circumference of the ring body; anda thinned structure provided only at a portion in a vicinity of the cut portion in an outer surface of the ring body other than the contact portion.2. The seal ring according to claim 1 , wherein the portion in the vicinity of the cut portion is a region within an angular range of 10 to 60 degrees from the cut portion on the circumference of the ring body.3. The seal ring according to claim 1 , wherein the ring body is formed using a resin material.4. The seal ring according to claim 3 , wherein the ring body is formed in a state where the cut portion is opened in a circumferential direction of the ring body.5. The seal ring according to claim 4 , wherein the thinned structure is provided in an inner peripheral surface ...

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Номер записи: 41
30-01-2020 дата публикации

SEAL ASSEMBLY

Номер: US20200032910A1
Автор: Allen Warrick
Принадлежит:

A dual function coating on a counterface of a seal. The dual function provides having a low friction and being hydrophobic. This is achieved by chemically modifying a low friction coating. Gaps are included, primarily on the exterior side of a seal, one side being coated with the modified low friction coating on a counterface and the other side with a hydrophobic or omniphobic material on a seal body. The material can be in the form of a coating, film, strip, or ring depending on application, and be coated, glued, fused, mechanically attached or by any other suitable method, attached to the seal body. The gap should preferably be in the order of 0.2 to 1 mm wide, thus creating ‘reverse-capillary’ function where water cannot pass all the way through the gap. 1. A seal assembly comprising:a seal body having at least one seal lip;a counterface; whereinthe at least one seal lip is in contact with the counterface covering a contact area on the counterface, and whereinthe counterface is coated with a chemically modified low friction coating, the chemical modification making the coating hydrophobic, and in that the coating of the counterface, when in use, extend on both sides of the contact area, thereby creating a hydrophobic barrier close to the at least one seal lip.2. The seal assembly according to claim 1 , wherein the low friction coating is a polyurethane low friction coating and is chemically modified with a low surface tension silicone modified polyacrylate monomer units with mono-hydroxyl functionality to allow the additive to bond into the polyurethane to thereby create the hydrophobic chemically modified low friction coating.3. The seal assembly according to claim 1 , wherein the seal body extends in part towards the counterface that is coated claim 1 , to thereby create a gap between the extended part of the seal body and a part of the coated counterface.4. The seal assembly according to claim 3 , wherein the part of the seal body that creates a gap with the ...

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Номер записи: 42
30-01-2020 дата публикации

SEAL DEVICE

Номер: US20200032912A1
Автор: HIROMATSU Jun, IGUCHI Tetsuya, INOUE Hideyuki, KASAHARA Hidetoshi, KIKUCHI Ryu, KIMURA Wataru, KUROKI Yasuhiro, Tokunaga Yuichiro
Принадлежит:

In an exemplary embodiment, a seal device 10 that seals between a housing 11 and a rotation shaft 20 passing through the housing 11 includes a floating ring 15 arranged with a gap h with respect to the rotation shaft 20, wherein the floating ring 15 includes at least one elastically supporting means 18 that supports in the circumferential direction. In the seal device, the floating ring follows movement of the rotation shaft so that the sealing operation and vibration damping function can be exerted. 1. A seal device that seals between a housing and a rotation shaft passing through the housing , the seal device being characterized by comprising:a floating ring arranged with a gap with respect to the rotation shaft, the seal device being characterized in thatthe floating ring includes at least one elastically supporting means that supports in the circumferential direction.2. The seal device according to claim 1 , characterized in thatthe elastically supporting means is arranged symmetrically with respect to a vertical line passing through center of the floating ring.3. The seal device according to claim 1 , characterized in thatan inner peripheral portion of the housing includes a recessed portion formed to extend to the radially outside,an outer peripheral portion of the floating ring includes a projecting portion projecting tothe radially outside, the projecting portion to be engaged with the recessed portion, andthe elastically supporting means is arranged between the recessed portion and the projecting portion and includes an elastic member to be stretched in the circumferential direction.4. The seal device according to claim 1 , characterized in thatthe floating ring is made of a material having a high sliding property.5. The seal device according to claim 2 , characterized in thatan inner peripheral portion of the housing includes a recessed portion formed to extend to the radially outside,an outer peripheral portion of the floating ring includes a projecting ...

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Номер записи: 43
04-02-2021 дата публикации

High Clearance Seal Assembly

Номер: US20210033194A1
Автор: Manry Jared Daniel
Принадлежит:

A seal assembly includes a seal disposed about a shaft and having an annular body with a radial sealing surface and an inner circumferential sealing surface engageable with the shaft. A housing is disposed about the shaft and has a first inner circumferential surface defining a first annular chamber about the shaft, the seal being disposed within the first annular chamber, a second inner circumferential surface spaced radially inwardly from the first inner circumferential surface and spaced from the outer surface of the shaft by a radial clearance so as to define a second annular chamber. A radial seal contact surface extends between the first and second inner circumferential surfaces and is sealingly engageable by the sealing surface of the seal to prevent flow between the two chambers, and circumferential pressure groove(s) are formed in the seal contact surface and are fluidly coupled with the first chamber. 1. A seal assembly for sealing about a shaft rotatable about a central axis , the shaft having an outer circumferential surface , the seal assembly comprising:a seal disposed about the shaft and including a generally annular body having a first axial end, an opposing second axial end, a generally radial sealing surface on the first axial end, and an inner circumferential sealing surface sealingly engageable with the outer circumferential surface of the shaft; anda housing disposed about the shaft and having a first inner circumferential surface defining a first annular chamber about the shaft, the seal being disposed within the first annular chamber, a second inner circumferential surface spaced radially inwardly from the first inner circumferential surface and spaced from the outer surface of the shaft by a radial clearance so as to define a second annular chamber, a radial seal contact surface extending radially between the first inner circumferential surface and the second inner circumferential surface, the radial sealing surface of the seal being ...

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Номер записи: 44
04-02-2021 дата публикации

MULTIPLE PIECE SEAL RING ASSEMBLY

Номер: US20210033195A1
Автор: Brees Samantha, Reinhardt John
Принадлежит: ROLLER BEARING COMPANY OF AMERICA, INC.

A sealing system for sealing a cylindrically shaped surface containing a first annular seal and a second annular seal. Each annular seal has a gap penetrating from the outer diameter to the inner diameter. The angle of the gap in the first annular seal and the angle of the gap in the second annular seal and the arrangement of the seals relative to an expander ring and a biasing ring minimizes leakage without the need for an anti-rotation pin or other means that would significantly decrease efficiency and reliability. 1. A sealing system for sealing a cylindrically shaped surface , the sealing system comprising:(a) a first annular seal having a first axial width extending between a first axial face and a second axial face, the first annular seal having a first radial thickness extending between a first inner circumferential surface to a first outer circumferential surface, a first slit extending through the first annular seal from the first axial face to the second axial face, the first slit having a length greater than the first radial thickness, the first slit extending from the first inner circumferential surface to the first outer circumferential surface in a first direction;(b) a second annular seal having a second axial width extending between a third axial face and a fourth axial face, the second annular seal having a second radial thickness extending between a second inner circumferential surface to a second outer circumferential surface, a second slit extending through the second annular seal from the third axial face to the fourth axial face, the second slit extending from the second inner circumferential surface to the second outer circumferential surface in a second direction, the second direction being different than the first direction;(c) the first annular seal and the second annular seal each having a single piece unitary construction and being aligned coaxially with one another and with the second axial face of the first annular seal slidingly ...

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Номер записи: 45
07-02-2019 дата публикации

Seal ring

Номер: US20190040956A1
Автор: Hitoshi Yamaguchi, Teppei OGA
Принадлежит: TPR Co Ltd

Provided is a seal ring causing less friction and having a low oil leakage property even under a state in which a shaft rotation frequency or a housing rotation frequency is high, and being capable of reducing a shaft rotation torque. A level difference portion that forms a second width smaller than a first width is formed on a longitudinal sectional shape of the seal ring as viewed in a circumferential direction from a seal ring outer peripheral surface side toward a seal ring inner peripheral surface side. The level difference portion is formed so that a center line of the second width in the circumferential direction of the seal ring in which a sealed fluid flows draws a trajectory of extending along the circumferential direction and shifting from an abutment joint end surface on an inner periphery side of a seal ring abutment joint portion at one end toward an abutment joint end surface on the inner periphery side of the seal ring abutment joint portion at another end so as to be closer to the seal ring contact surface.

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Номер записи: 46
26-02-2015 дата публикации

Radial Shaft Seal

Номер: US20150054227A1
Автор: Martin Schaub, Siegmar Kreutzer
Принадлежит: VR Automotive Dichtungssysteme GmbH

The invention relates to a radial shaft seal for sealing a shaft ( 2 ), which is guided through a housing wall opening ( 3 ). The seal comprises at least one first membrane-like, annular sealing element ( 15 ) with a sealing lip ( 22 ) which can be positioned against the shaft ( 2 ) in a sealing manner; a metallic, annular supporting element ( 16 ), onto which the sealing element ( 15 ) is pulled; and a centring surface ( 19 ) formed at the outer circumference of the edge area ( 18 ). In order to increase the lifespan of the seal, said seal can be surrounded by an adapter part ( 6 ) made from undulating curved sheet metal, which can be inserted flush into the housing wall opening ( 3 ). The adapter part ( 6 ) has a central, cylindrical opening ( 8 ) which is provided with a shoulder ( 11 ) at the rear end thereof in the compression direction. The centring surface ( 19 ) of the supporting body ( 16 ) has an allowance for the cylindrical opening ( 8 ) of the adapter part ( 6 ), and is pushed into said opening in a press-fitting manner. A second membrane-like sealing element ( 17 ), which can be firmly pressed between the shoulder ( 11 ) and the supporting body ( 16 ), is arranged between the supporting body ( 16 ) and the shoulder ( 11 ) provided in the opening ( 8 ) of the adapter part ( 6 ).

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Номер записи: 47
14-02-2019 дата публикации

SEALING UNIT FOR TURBOCHARGER

Номер: US20190048733A1
Автор: FICKERT Marc, Mack Sebastian
Принадлежит:

A sealing unit for a turbocharger for sealing a transition from a bearing housing into a compressor housing, and a method for producing a sealing unit of this type. The sealing unit includes comprises a sealing bush which is designed for common rotation with a shaft of a turbocharger, a slide ring, and first and second groove rings. The first and second, wherein the two groove rings are designed for common rotation with the sealing bush and are arranged on the sealing bush. The slide ring is arranged between the first and second two groove rings in the axial direction so that radially extending sealing gaps are formed on both sides of the slide ring between the slide ring and the respective groove ring. 110100. A sealing unit () for a turbocharger for sealing a transition from a bearing housing into a compressor housing , comprising a sealing bush () designed for common rotation with a shaft of the turbocharger;{'b': '200', 'a slide ring (); and'}{'b': 310', '320, 'first and second groove rings (, ),'}{'b': 310', '320', '100', '100, 'wherein the first and second groove rings (, ) are designed for common rotation with the sealing bush () and are arranged on the sealing bush (), and'}{'b': 200', '310', '320', '410', '420', '200', '200', '310', '320, 'wherein the slide ring () is arranged between the first and second groove rings (, ) in the axial direction such that radially extending air gaps (, ) are formed on both sides of the slide ring () between the slide ring () and the respective groove ring (, ).'}2310320200410420200410420. The sealing unit according to claim 1 , wherein recesses are provided in the radial side walls of groove rings ( claim 1 , ) that face the slide ring () claim 1 , by which means a gas cushion is formed in the sealing gaps ( claim 1 , ) during operation of the turbocharger; and/or recesses are provided in the radial side walls of the slide ring () claim 1 , so that a gas cushion is formed in the sealing gaps ( claim 1 , ) during operation ...

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Номер записи: 48
14-02-2019 дата публикации

LOW-FRICTION SEALING ASSEMBLY FOR A WHEEL-HUB UNIT AND WHEEL-HUB UNIT EQUIPPED WITH SUCH A SEALING ASSEMBLY

Номер: US20190049014A1
Автор: Duch Daniele, Galante Roberto, Organisciak Michel, Re Paolo A, Serafini Andrea, Villalobos Héctor
Принадлежит:

Low-friction sealing assembly for a vehicle wheel-hub unit inserted inside an annular interspace defined between a flanged rotating element and a stationary element, coaxial with each other, of the wheel-hub unit to protect at least one ring of revolving bodies arranged between the stationary element and the rotating element, and having a first annular screen and a second annular screen during use integral with the rotating element and with the stationary element; and an annular seal having lips that extend axially and radially projecting from the first screen towards the second screen inside an annular chamber defined by the first and second screens; the sealing assembly being a multi-stage sealing assembly provided with a first inner collecting stage designed to collect and expel some of the contaminants. 1. A low-friction sealing assembly for a vehicle wheel-hub unit that is inserted inside an annular interspace defined between a flanged rotating element and stationary element , coaxial with each other , the wheel-hub unit to protect at least one ring of revolving members arranged between the stationary element and the rotating element , and comprises:a first annular screen integral with the rotating element;a second annular screen integral with the stationary element; andan annular seal comprising lips that extend axially and radially projecting from the first screen towards the second screen inside an annular chamber defined by the first and second screens;the sealing assembly providing a multi-stage sealing assembly and comprises:a first inner collecting stage designed to collect and expel some of the contaminants and is defined by an annular cavity of the first screen; anda labyrinth stage that is arranged radially on the outside of the first inner collecting stage along an entry/exit path of the contaminants and is also defined by an annular deviating lug of the first screen.2. The low-friction sealing assembly according to claim 1 , further comprising an ...

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Номер записи: 49
22-02-2018 дата публикации

SEAL RING

Номер: US20180051809A1
Автор: HONDA Shigenobu, HOSONUMA Norimasa, SAKAI Yohei, SUZUKI Nozomu, TOMA Shota, XU Fangman, Yoshida Yusuke, Yoshimura Kenichi
Принадлежит:

A seal ring capable of stably reducing a rotational torque while preventing the leakage of sealed fluid. The seal ring includes: an abutment joint part () provided at one portion in a circumferential direction thereof; a plurality of dynamic pressure generation grooves () provided at intervals in the circumferential direction on a side of a sliding surface thereof sliding on a lateral wall surface of an annular groove; and foreign matter discharging grooves () that are provided between a region in which the plurality of dynamic pressure generation grooves () is arranged and the abutment joint part () in the circumferential direction on the side of the sliding surface sliding on the lateral wall surface, and that are capable of catching foreign matter intruding from the abutment joint part () and discharging the caught foreign matter to an outside of a sliding part between the seal ring and the lateral wall surface. 1. A seal ring that is attached to an annular groove provided on an outer periphery of a shaft and seals an annular gap between the shaft and a housing that rotate relative to each other , to maintain fluid pressure in a sealed region in which the fluid pressure is configured to change ,the seal ring sliding on a lateral wall surface of the annular groove on a lower pressure side,the seal ring comprising:an abutment joint part provided at one portion in a circumferential direction thereof;a plurality of dynamic pressure generation grooves provided at intervals in the circumferential direction on a side of a sliding surface thereof sliding on the lateral wall surface; andforeign matter discharging grooves that are provided between a region in which the plurality of dynamic pressure generation grooves is arranged and the abutment joint part in the circumferential direction on the side of the sliding surface sliding on the lateral wall surface, and that are capable of catching foreign matter intruding from the abutment joint part and discharging the caught ...

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Номер записи: 50
01-03-2018 дата публикации

SEAL RING

Номер: US20180058584A1
Автор: MIYAZAKI Maiko, SAKAI Yohei, TOMA Shota, Yoshimura Kenichi
Принадлежит:

A seal ring includes, on a side of a sliding surface thereof, a groove part () having a first groove () extending in a circumferential direction thereof and a second groove () extending from a central position of the first groove () in the circumferential direction to an inner peripheral surface and guiding sealed fluid into the first groove (), the first groove () having dynamic pressure generation grooves () configured to have a groove bottom made shallower at an end thereof in the circumferential direction than at a center thereof in the circumferential direction, and a foreign matter catching groove () that has a groove bottom deeper than the groove bottoms of the dynamic pressure generation grooves () and is capable of catching foreign matter, and the first groove () being provided at a position that falls within a sliding region in which the seal ring slides on the lateral wall surface. 1. A seal ring that is attached to an annular groove provided on an outer periphery of a shaft and seals an annular gap between the shaft and a housing that rotate relative to each other , to maintain fluid pressure in a sealed region in which the fluid pressure is configured to change ,the seal ring sliding on a lateral wall surface of the annular groove on a lower pressure side,the seal ring comprising, on a side of a sliding surface thereof that slides on the lateral wall surface, a groove part having a first groove extending in a circumferential direction thereof and a second groove extending from a central position of the first groove in the circumferential direction to an inner peripheral surface and guiding sealed fluid into the first groove,the first groove having dynamic pressure generation grooves configured to have a groove bottom made shallower at an end thereof in the circumferential direction than at a center thereof in the circumferential direction, and a foreign matter catching groove that has a groove bottom deeper than the groove bottoms of the dynamic ...

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Номер записи: 51
01-03-2018 дата публикации

SEALING DEVICE

Номер: US20180058585A1
Автор: SATO Yuki
Принадлежит:

A sealing apparatus is provided with a reinforcing ring that is a member that is annular around an axis x, an elastic-body portion that is formed from an elastic body that is annular around the axis x, an annular garter spring and a lip-pressing ring that is an annular member. The lip-pressing ring is configured so that a seal lip can be inserted into a space on an inner-periphery side thereof, and a value of an inner diameter thereof is configured to be a size no less than a value of an outer diameter of an annular portion that is at least a portion on an outer-periphery side of the seal lip The sealing apparatus can suppress a decrease in tracking a rotary shaft. 1. A sealing apparatus , comprising:a reinforcing ring that is annular around an axis;an elastic-body portion that is provided with a seal lip, is installed to the reinforcing ring, is formed from an elastic body, and is annular around the axis;an annular garter spring; anda lip-pressing ring that is an annular member; whereinthe seal lip has on an inner-periphery side a lip tip portion that is an annular portion that is convex toward the axis and on an outer-periphery side a receiving groove that is an annular groove formed facing away from the lip tip portion;the garter spring is embedded in the receiving groove of the seal lip; andthe lip-pressing ring is configured so the seal lip can be inserted into a space on the inner-periphery side of the lip-pressing ring, a value of an inner diameter of the lip-pressing ring being no less than a value of an outer diameter of an annular portion that is at least a portion on the outer-periphery side of the seal lip.2. The sealing apparatus according to claim 1 , whereinthe seal lip is connected to another portion of the elastic-body portion at an end portion on one side in an axis direction, the value of the inner diameter of the lip-pressing ring being no less than a value of an outer diameter of the seal lip at a portion at least partway toward the one side ...

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Номер записи: 52
01-03-2018 дата публикации

SEALING APPARATUS

Номер: US20180058587A1
Автор: SATO Yuki, YANAGISAWA Nobuaki, Yoshimura Kenichi
Принадлежит:

A sealing apparatus sealing a gap between two members mutually relatively rotatable about an axis in an internal combustion engine, the sealing apparatus comprises an elastic body portion. The elastic body portion is an elastic body including an annular attaching portion attached to one of the two members and centered about the axis, and a seal portion in close contact with another of the two members in a manner in which the other of the two members is slidable. The seal portion includes an annular seal lip portion centered about the axis and an annular dust lip centered about the axis on an atmospheric side on an opposite side of a sealed fluid side with respect to the seal lip portion. The seal lip portion includes a lip tip portion which is an annular projecting body projecting toward the axis and grease is applied to the seal lip portion. The grease contains at least one of a synthetic hydrocarbon oil and a mineral oil as a base oil and has a low temperature starting torque of 25 N·cm or less at −30° C. 1. A sealing apparatus sealing a gap between two members mutually relatively rotatable about an axis in an internal combustion engine , the sealing apparatus comprising:an elastic body portion which is an elastic body including an annular attaching portion attached to one of the two members and centered about the axis; and a seal portion in close contact with another of the two members in a manner in which the other of the two members is slidable, whereinthe seal portion comprises: an annular seal lip portion centered about the axis; and an annular dust lip centered about the axis on an atmospheric side on an opposite side of a sealed fluid side with respect to the seal lip portion, whereinthe seal lip portion comprises a lip tip portion which is an annular projecting body projecting toward the axis, andgrease is applied to the seal lip portion, the grease contains at least one of a synthetic hydrocarbon oil and a mineral oil as a base oil and has a low ...

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Номер записи: 53
20-02-2020 дата публикации

SEALING STRUCTURE OF PLUNGER PUMP

Номер: US20200056608A1
Автор: Li Xiaorong, Yang Fazheng
Принадлежит:

A sealing structure of plunger pump, comprising a pump body, a feed chamber, an oil, a suited plunger; wherein the plunger includes a one-way valve and a discharge hole; the feed chamber includes a mounting step having a first sealing ring, a second sealing ring; an inner wall of the first sealing ring has a plurality of first sealing pipes distributed uniformly in longitudinal direction; an infusion step having an annular mounting groove; the mounting groove is embedded with a suited spring leaf; an inner wall of the second sealing ring includes a plurality of sealing toothed rings. The sealing structure of the plunger pump can ensure the sealing effect of the sealing ring when the sealing ring is worn out, and can ensure the service life of the sealing ring to the utmost extent. 1. A sealing structure of plunger pump , comprising:a pump body, a feed chamber located in the pump body and an oil line connected to the feed chamber; a suited plunger is located in the feed chamber;wherein the plunger includes a one-way valve and a discharge hole matching the one-way valve; the one-way valve is located near the connection between the feed chamber and the of line; an upper inner wall of the feed chamber includes a mounting step; the mounting step includes a first sealing ring, the first sealing ring is fitted over the plunger; a second sealing ring is disposed above the first sealing ring and the second sealing ring is sleeved outside the plunger; an inner wall of the first sealing ring has a plurality of first sealing pipes distributed uniformly in longitudinal direction; the first sealing pipes are integrally formed with the first sealing ring; the first sealing pipes are wide-top narrow-bottom hole shaped; the first sealing pipes and the inner wall of the first sealing ring are enclosed to form a plurality of first storage tanks distributed uniformly in longitudinal direction; an infusion step is located on a lower surface of the second sealing ring corresponding to ...

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Номер записи: 54
28-02-2019 дата публикации

ROTARY SEAL

Номер: US20190063605A1
Автор: Kracke Jeremy, TIMMS Mark
Принадлежит:

There is provided a rotary seal for sealing around shafts in flight controls of an aircraft. The rotary shaft seal comprises: an annular first sealing surface for sealing against a housing; an annular second sealing surface for sealing against a rotatable surface; a reservoir arranged for receiving a fluid that is leaked past the second sealing surface; and a sorbent material within the reservoir for absorbing and/or adsorbing the fluid received within the reservoir. Also provided is a method of sealing around a rotary cylindrical surface within a housing using a rotary seal provided on the cylindrical surface, wherein the rotary seal comprises an annular first sealing surface for sealing against the housing and an annular second sealing surface for sealing against a rotating surface. 1. A rotary seal for sealing around shafts in flight controls of an aircraft , the rotary seal comprising:an annular first sealing surface for sealing against a housing;an annular second sealing surface for sealing against a rotatable surface;a reservoir arranged for receiving a fluid that is leaked past the second sealing surface; anda sorbent material within the reservoir for absorbing and/or adsorbing the fluid received within the reservoir.2. The rotary seal of claim 1 , wherein the first sealing surface and the second sealing surface are provided by an annular housing seal and wherein the rotary seal further comprises a further annular seal for sealing against a rotary cylindrical surface within the housing claim 1 , the further annular seal being rotatable with respect to the housing seal;wherein the rotatable surface comprises a surface of the further annular seal;preferably wherein the reservoir is arranged between the housing seal and the further annular seal.3. The rotary seal of claim 1 , wherein the sorbent material is a woven or felted fiber sheet or a powderpreferably wherein when the sorbent material is a woven or felted fiber sheet the sorbent material comprises fibers ...

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Номер записи: 55
27-02-2020 дата публикации

SEAL DEVICE AND SEAL ASSEMBLY

Номер: US20200063868A1
Автор: Happ Alexander, KRAPF Marco
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

The invention relates to a seal device () for sealing two bearing elements which rotate relative to each other about an axis (D), in particular for sealing a rolling bearing. The seal device () includes a sealing section () for sealing purposes and a fastening section () for holding the seal device () against a bearing element (). The sealing section () is arranged at one end of the fastening section () and includes a free end (E) opposite thereof. All the sections () have a common carrier element () and at least one sealing element (), and all the sections () extend in the radial direction (R) and/or in the axial direction (A). The fastening section () extends at least partly in the axial direction (A) such that the carrier element () and the sealing element () rest directly against a bearing element () in order to form a clamping seat in the radial direction (R) by the carrier element () in order to hold against a bearing element () and a static seal by the seal element () in order to seal against a bearing element (). The invention further relates to a seal assembly () for a rolling bearing, in particular for a wheel bearing assembly, including a bearing element () and a seal device (). 1. A seal device for sealing two bearing elements that rotate relative to each other about an axis , the seal device comprises:a sealing section for sealing, anda fastening section configured to hold the seal device on one of the bearing elements,the sealing section is arranged on a first end of the fastening section and comprises a free end opposite the first end,the sealing section and the fastening section have a common carrier element and at least one sealing element,the sealing section and the fastening section extend in at least one of a radial direction or an axial direction,the fastening section extends at least partially in the axial direction and is configured for direct contacting of the carrier element and the sealing element on the bearing element, in order to form a ...

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Номер записи: 56
27-02-2020 дата публикации

SEAL DEVICE

Номер: US20200063871A1
Автор: HIROMATSU Jun, IGUCHI Tetsuya, INOUE Hideyuki, KASAHARA Hidetoshi, KIKUCHI Ryu, KIMURA Wataru, KUROKI Yasuhiro, Tokunaga Yuichiro
Принадлежит:

In an exemplary embodiment, a sealing device includes a floating ring in a space between the outer circumference of a rotating shaft and the inner circumference of a housing , and a multi-layered cylindrical body including a plurality of elastically deformable cylindrical thin plates layered on top of each other provided between an outer peripheral surface of the floating ring and an inner peripheral surface of the housing. The sealing device can impart a radial restoring force against the eccentricity of the rotating shaft to restore it to its center position, and a tangential damping force to reduce the whirling of the rotating shaft. 1. A sealing device comprising: a floating ring in a space between an outer circumference of a rotating shaft and an inner circumference of a housing; and a multi-layered cylindrical body including a plurality of elastically deformable cylindrical thin plates layered on top of each other provided between an outer peripheral surface of the floating ring and an inner peripheral surface of the housing.2. The sealing device according to claim 1 , wherein the multi-layered cylindrical body is formed in a circumferentially corrugated shape.3. The sealing device according to claim 1 , wherein the multi-layered cylindrical body is provided such that sealed fluid is present at opposite ends thereof claim 1 , and is provided with a gap between the plurality of thin plates for allowing the sealed fluid to enter and exit from opposite ends thereof.4. The sealing device according to claim 1 , wherein the corrugated shape of the multi-layered cylindrical body is set such that claim 1 , when the rotating shaft is at rest claim 1 , valleys are in contact with the outer peripheral surface of the floating ring claim 1 , and peaks are in contact with the inner peripheral surface of the housing.5. The sealing device according to claim 1 , wherein the thin plates are formed of an elastically deformable metallic material.6. The sealing device according to ...

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Номер записи: 57
27-02-2020 дата публикации

SEAL DEVICE

Номер: US20200063873A1
Автор: HIROMATSU Jun, IGUCHI Tetsuya, INOUE Hideyuki, KASAHARA Hidetoshi, KIKUCHI Ryu, KIMURA Wataru, KUROKI Yasuhiro, Tokunaga Yuichiro
Принадлежит:

In an exemplary embodiment, a sealing device includes a floating ring in a space between the outer circumference of a rotating shaft and the inner circumference of a housing , and a permeable damping member provided around an outer peripheral portion of the floating ring . The sealing device can impart a radial restoring force against the eccentricity of the rotating shaft to restore it to its axis position, and a tangential damping force to reduce the whirling of the rotating shaft. 1. A sealing device comprising: a floating ring in a space between an outer circumference of a rotating shaft and an inner circumference of a housing; and a permeable damping member provided around an outer peripheral portion of the floating ring.2. The sealing device according to claim 1 , wherein the permeable damping member is formed of a wire mesh damper formed from wire mesh composed of metallic wires or plastic wires woven into a mesh structure.3. The sealing device according to claim 1 , wherein the permeable damping member is formed in a hollow cylindrical shape.4. The sealing device according to claim 3 , wherein the hollow cylindrical permeable damping member is set such that an inner peripheral surface thereof is in contact with an outer peripheral surface of the floating ring claim 3 , and an outer peripheral surface thereof is in contact with a radially inner peripheral surface of a housing body defining the space.5. The sealing device according to claim 3 , wherein an axial width of the hollow cylindrical permeable damping member is set to a length to provide slight gaps between opposite ends thereof and opposite inner side surfaces of the housing.6. The sealing device according to claim 1 , further comprising a sealing face formed by an inner surface of the housing and a low-pressure-side side surface of the floating ring claim 1 , the sealing face being provided with an introduction recess capable of introducing sealed fluid.7. The sealing device according to claim 2 , ...

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Номер записи: 58
15-03-2018 дата публикации

LINEAR ENCODER WITH IMPROVED SEALING

Номер: US20180073637A1
Автор: Driker Michael
Принадлежит:

A sealed linear encoder includes a housing adapted for attachment to a first object and a scale unit and scanning unit arranged in a hollow body of the housing, which has a slot extending in a direction of measurement. The scanning unit is mounted on a first end of a pedestal slidably accommodated within the slot and whose second end is adapted for attachment to a second object. The slot is sealed by first and second pairs of sealing lips, which together with the pedestal are configured such that the pedestal intersects the first and second pairs of sealing lips at respective locations that are axially displaced along the direction of measurement such that there is no axial overlap between the first and second pairs of sealing lips at these locations. 1. A sealed linear encoder for determining the relative position of a first object and a second object , comprising:a housing adapted for attachment to the first object;a scale unit arranged in a hollow body of the housing having a slot which extends in a direction of measurement;a scanning unit for scanning the scale unit and being mounted on a first end of a pedestal that is slidably accommodated within said slot and whose second end is adapted for attachment to the second object;a first pair of sealing lips arranged for sealing opposite edges of the slot; anda second pair of sealing lips arranged for sealing opposite edges of the slot, said second pair of sealing lips being displaced from the first pair of sealing lips in a direction normal to the direction of measurement;the pedestal and sealing lips being configured such that the pedestal intersects the first and second pairs of sealing lips at respective locations that are axially displaced along the direction of measurement whereby there is no axial overlap between the first and second pairs of sealing lips at said locations;{'sub': 1', '2, 'wherein the pedestal comprises two laterally spaced supports of respective widths hand hthat are interconnected by a ...

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Номер записи: 59
07-03-2019 дата публикации

BEARING PROTECTOR

Номер: US20190072184A1
Автор: Banks Joshua William
Принадлежит: AES ENGINEERING LTD.

A bearing protector includes a static component fixed relative to a housing, in which a stationary sealing face profile is retained and a rotational component for fixing relative to a shaft with the static and rotational components held axially relative to each other. The rotational component has an annular sealing face profile energized by way of one or more magnetic elements retained within the static component to generate a positive sealing face contact between the stationary sealing face and rotational sealing face profiles. The magnets elements are held within recesses in the static component and extend radially inwards of the recesses. 1. An apparatus , comprising a static component fixed relative to a housing , wherein a stationary sealing face profile is retained , and a rotational component for fixing relative to a shaft with the static component and the rotational component held axially relative to one another , the rotational component having an annular sealing face profile energized via a magnetic element retained within the static component for generating a positive sealing face contact between the stationary sealing face profile and a rotational sealing face profiles.2. The apparatus according to claim 1 , wherein said magnetic element is retained within the housing of the static component via holes allowing said magnetic element to interact with the rotational component generating positive seal face loading.3. The apparatus according to claim 2 , wherein the holes are partially cylindrical recessed for accommodating a cylindrical magnetic element so that said magnetic element exits radially inwards of the holes for allowing assembly of the rotational component within the housing prior to installation of the magnetic element.4. The apparatus according to claim 1 , wherein a profile of the rotational component profile provides for magnetic element interaction to be promoted and a magnetic force gap is set for maintaining a predetermined seal face ...

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Номер записи: 60
05-03-2020 дата публикации

ARRANGEMENT STRUCTURE FOR SEAL MEMBER

Номер: US20200072354A1
Автор: MINAMI Mitsuru, NAGANO Akihiro, Ueda Akira, UMEDA Katsuhisa
Принадлежит:

An arrangement structure for a seal member includes: a first member having a first mating surface and provided with a groove portion; a second member having a second mating surface, and configured to move relatively to the first member; and an annular seal member fitted into the groove portion, providing sealing between the first member and the second member, and serving as a partition between an atmosphere-side space and a pressurized-side space. The seal member includes a plurality of first protruding portions protruding toward the second mating surface and aligned from the atmosphere-side space toward the pressurized-side space. The seal member has such a shape that, in a state of not being fitted into the groove portion, a protrusion height of the first protruding portion increases in stages from the first protruding portion arranged close to the pressurized-side space toward the first protruding portion arranged close to the atmosphere-side space. 1. An arrangement structure for a seal member , comprising:a first member having a first mating surface and provided with a groove portion, the groove portion being recessed from the first mating surface and extending annularly;a second member having a second mating surface facing the first mating surface, and configured to move relatively to the first member; andan annular seal member fitted into the groove portion, providing sealing between the first member and the second member, and serving as a partition between a first space and a second space having a pressure higher than that of the first space,the seal member including a plurality of first protruding portions protruding toward the second mating surface and aligned from the first space toward the second space,the seal member having such a shape that, in a state of not being fitted into the groove portion, a protrusion height of the first protruding portion increases in stages from the first protruding portion arranged close to the second space toward the first ...

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Номер записи: 61
18-03-2021 дата публикации

SEALING DEVICE

Номер: US20210080007A1
Автор: Hamamoto Kokichi, NISHIMURA TOMOAKI, SUGIHARA Hiromi, WATANABE Toshiki
Принадлежит: NOK CORPORATION

A sealing device includes a reinforcing ring and an elastic body part. The elastic body part includes an annular seal lip, an annular dust lip, and an annular side lip that extends toward an outer side on an outer periphery side of the dust lip. The side lip includes an annular middle portion that increases in diameter as progress toward the outer side and an annular distal end portion that is a portion connected to and on the outer side of the middle portion and that increases in diameter as progress toward the outer side. In the side lip, the distal end portion is bent to an inner periphery side from the middle portion. In the middle portion, at least one groove is formed annularly around an axis x. 1. A sealing device for sealing between a through-hole and a shaft inserted through the through-hole , the sealing device comprising:a reinforcing ring formed annularly around an axis; and an annular seal lip, the seal lip being in contact with the shaft such that the shaft is slidable;', 'an annular dust lip, the dust lip being provided on an outer side of the seal lip and extending toward the axis; and', 'an annular side lip, the side lip extending toward the outer side on an outer periphery side of the dust lip, the side lip having:', 'an annular middle portion, the middle portion increasing in diameter as progress toward the outer side in a direction of the axis; and', 'an annular distal end portion, the distal end portion being a portion connected to and on the outer side of the middle portion, the distal end portion increasing in diameter as progress toward the outer side in the direction of the axis,, 'an elastic body part formed from an elastic body that is attached to the reinforcing ring and that is formed annularly around the axis, the elastic body part includingwherein in the side lip, the distal end portion is bent to an inner periphery side from the middle portion, andwherein in the middle portion, at least one groove is formed annularly around the axis.2 ...

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Номер записи: 62
26-03-2015 дата публикации

Joint for Device for Metering Liquids

Номер: US20150086448A1
Автор: Jean-Pierre Uldry
Принадлежит: Socorex Isba SA

The present invention relates to a device for metering liquids, for example a pipette or a metering button. The device comprises a joint forming a seal between a hollow cylinder and a piston housed inside the cylinder, the piston being moved vertically so as to suck in or expel the liquid. During the metering operation, the joint remains fixed with respect to the movement of the piston and comprises parts formed by portions having dedicated geometric and mechanical characteristics which make it possible to locally optimize the functions the sliding, sealing, and fastening in the cylinder.

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Номер записи: 63
12-06-2014 дата публикации

SEALING DEVICE

Номер: US20140161619A1
Автор: Chatry Didier, Delacou Jean-Michel, JACQUEMONT Eric
Принадлежит:

The present invention relates to a sealing device () comprising a sealing circular piece (), an inner ring () and an outer ring (), one of the two rings being able to rotate relative to an axis, the circular piece () being arranged between the two rings () and comprising two circular lips () arranged in a groove () at right angles to the axis of rotation, a top lip () and a bottom lip () substantially at right angles to the top lip (), said bottom lip () has a radius of curvature directed towards the interior, the groove () being provided on the outer face () of the inner ring () and a third circular lip () pressing on the outer face () of the inner ring (), and a part () is fixed in an orifice () formed in the outer ring (). 1. Sealing device comprising at least one sealing circular piece , an inner ring and an outer ring , one of the two rings being able to rotate relative to an axis , the circular piece being arranged between the two rings , wherein the circular piece comprises two circular lips arranged in a groove at right angles to the rotation axis , provided on the face of one of the rings , a top lip and a bottom lip substantially at right angles to the top lip , said bottom lip has a radius of curvature directed towards the interior and a third circular lip pressing on said face of the ring , and a fixing profile is fixed in a groove formed in the other outer ring.2. Sealing device according to claim 1 , wherein the third lip is placed above the other two lips.3. Sealing device according to claim 1 , wherein the groove has two parallel flanks.4. Sealing device according to claim 1 , wherein the fixing profile is a fir tree profile.5. Sealing device according to claim 1 , wherein the first lip presses on the side of the groove.6. Sealing device according to claim 5 , wherein the second lip presses on the side of the groove.7. Sealing device according to claim 1 , wherein the sealing circular piece comprises an edge pressing on an inner face of the ring.8. ...

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Номер записи: 64
23-03-2017 дата публикации

Modular seal kit and method of manufacture

Номер: US20170082201A1
Автор: Michael Thomas
Принадлежит: SKF AB

The method includes providing a generally annular sealing element, the sealing element having an inner circumferential sealing surface configured to engage with a relatively movable member, and an outer casing blank including one of: a generally axially-extending section and a generally radially-extending section extending inwardly from the axially-extending section; and a generally annular disk and a generally cylindrical tube. The method may also include determining a desired diameter for a generally annular outer casing, removing a portion of the provided one of the radially-extending section and the annular disk, such that a diameter of the outer casing blank is about equal to the desired diameter, and coupling the sealing element to the outer casing blank after removing the portion of the provided one of the radially-extending section and the disk.

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Номер записи: 65
12-03-2020 дата публикации

A SEALING ARRANGEMENT FOR A ROTATABLE SHAFT OF A COMBUSTION ENGINE

Номер: US20200080511A1
Автор: FORS Stefan, GÅNGFELDT Hans
Принадлежит: SCANIA CV AB

The present invention relates to a sealing arrangement for a rotatable shaft of a combustion engine. The rotatable shaft comprises a crankshaft journal, a crankshaft gear and a flywheel. The sealing arrangement comprises a sealing member configured to be arranged in an annular space between a surface defining an opening for said rotatable shaft through a stationary wall of the combustion engine and an outer periphery surface of the rotatable shaft. The sealing member comprises a radially outer portion to be fixedly arranged to the surface defining said opening. The crankshaft gear comprises a portion provided with a smooth outer periphery surface and that the sealing member comprises a radially inner portion comprising at least one sealing lip configured to sealingly abut against the outer periphery surface of the crankshaft gear. 1. A sealing arrangement for a rotatable shaft of a combustion engine , wherein the rotatable shaft comprises a crankshaft journal , a crankshaft gear and a flywheel , wherein the sealing arrangement comprises a sealing member configured to be arranged in an annular space between a surface defining an opening for said rotatable shaft through a stationary wall of the combustion engine and an outer periphery surface of the rotatable shaft , wherein the sealing member comprises a radially outer portion to be fixedly arranged to the surface defining said opening , and wherein the crankshaft gear comprises a portion provided with a smooth outer periphery surface and that the sealing member comprises a radially inner portion comprising at least one sealing lip configured to sealingly abut against the outer periphery surface of the crankshaft gear.2. A sealing arrangement according to claim 1 , wherein the sealing lip is configured to abut against an outer periphery surface of the crankshaft gear with a resilient force.3. A sealing arrangement according to claim 1 , wherein the crankshaft gear is manufactured by a hardened steel material.4. A ...

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Номер записи: 66
12-03-2020 дата публикации

METHOD FOR MANUFACTURING SEALING DEVICE, AND SEALING DEVICE

Номер: US20200080642A1
Автор: Mori Tatsuya, Onodera Hiroshi, OYAMA Takayuki
Принадлежит:

[Problem] To provide a method for manufacturing a sealing device having high pressure-resistance and high durability. 1. A method for manufacturing a sealing device to be provided between a shafta step for forming an atmosphere-side rigid ring by forming a through-hole in a rigid body by a punching-out process,a step for causing a reinforcement ring for reinforcing an elastic ring to contact the elastic ring in a direction parallel to the axial direction of the shaft, wherein the elastic ring is made of an elastic body, is attached to a liquid-side rigid ring made of a rigid body and provided inside the shaft hole, is provided radially inward of the liquid-side rigid ring and has formed thereon a seal lip that slidably makes sealing contact with the shaft, anda step for causing the atmosphere-side rigid ring to contact the reinforcement ring in a direction parallel to the axial direction of the shaft so that a surface contacted by an end surface of a punch during the punching-out process of the atmosphere-side rigid ring is positioned on an opposite side to the reinforcement ring.2. A sealing device to be provided between a shaft and an inner surface of a shaft hole in which the shaft is provided , the sealing device comprisinga liquid-side rigid ring made of a rigid body and provided inside the shaft hole,an elastic ring which is made of an elastic body, is attached to the liquid-side rigid ring, is provided radially inward of the liquid-side rigid ring, and has formed thereon a seal lip that slidably makes sealing contact with the shaft,a reinforcement ring which contacts the elastic ring in a direction parallel to the axial direction of the shaft and reinforces the elastic ring, andan atmosphere-side rigid ring which is made of a rigid body, contacts the reinforcement ring in a direction parallel to the axial direction of the shaft, and reinforces the reinforcement ring,wherein the maximum diameter of an inclined surface of a corner portion on the reinforcement ...

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Номер записи: 67
12-03-2020 дата публикации

RADIALLY DISPLACEABLE BRUSH SEAL

Номер: US20200080646A1
Автор: FRANCESCHINI Gervas
Принадлежит:

A brush seal for sealing a leakage gap in an axial flow path between a relatively higher fluid pressure region and a relatively lower fluid pressure region. The brush seal may comprise an outer housing and an inner housing located at least partially within and configured for radial displacement relative to the outer housing. The inner housing may comprise a first downstream outer contact member comprising a first downstream facing outer contact surface configured along a first radial contact line. The inner housing may comprise a second downstream outer contact member comprising a second downstream facing outer contact surface configured, and radially spaced from the first downstream facing outer contact surface, along the first radial contact line to define a downstream inner chamber opening therebetween. The inner housing may further comprise a first bristle layer in physical communication with a first upstream facing inner contact surface configured along a second radial contact line. An upstream facing surface of the outer housing may be maintained in physical communication with at least the first downstream facing outer contact surface and the second downstream facing outer contact surface during radial displacement thereof. At all relative radial positions of the inner housing relative to the outer housing, during use, a collective contact surface between the upstream facing surface of the outer housing and both the first downstream facing outer contact surface and the second downstream facing outer contact surface may be greater than a collective surface of the downstream inner chamber opening. 1. A brush seal for sealing a leakage gap in an axial flow path between a relatively higher fluid pressure region and a relatively lower fluid pressure region , comprising an outer housing and an inner housing located at least partially within and configured for radial displacement relative to the outer housing , wherein:the inner housing comprises a first downstream ...

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Номер записи: 68
29-03-2018 дата публикации

Intershaft Seal with Asymmetric Sealing Ring and Centrifugal Retaining Plates

Номер: US20180087393A1
Автор: Garrison Glenn M.
Принадлежит:

An intershaft seal assembly for use between an inner shaft and an outer shaft within a turbine engine is presented. The seal assembly includes a sealing ring, centrifugal retaining plates, and end rings. The sealing ring further includes a plurality of asymmetric ring segments whereby each asymmetric ring segment further includes a vertical flange and horizontal flanges extending from the vertical flange in a non-symmetric arrangement. At least one slot is disposed along each horizontal flange. The sealing ring is interposed between the centrifugal retaining plates. Each centrifugal retaining plate includes a plurality of tabs extending therefrom. Each tab is engaged by one slot. The sealing ring and the centrifugal retaining plates are interposed between the end rings. Each centrifugal retaining plate is directly interposed between one horizontal flange and one end ring. The vertical flange extends from between the end rings in the direction of the outer shaft. A non-contact seal is formed between an outer sealing surface along the vertical flange and an inner sealing surface along the outer shaft. 1. A seal assembly for use between an inner shaft and an outer shaft within a turbine engine comprising: (i) a vertical flange; and', '(ii) a pair of horizontal flanges which extend from said vertical flange in a non-symmetric arrangement, at least one slot disposed along each said horizontal flange;, '(a) a sealing ring including a plurality of asymmetric ring segments, each said asymmetric ring segment further includes(b) a pair of centrifugal retaining plates, said sealing ring interposed between said centrifugal retaining plates, each said centrifugal retaining plate includes a plurality of tabs extending therefrom, each said tab engaged by one said slot; and(c) a pair of end rings, said sealing ring and said centrifugal retaining plates interposed between said end rings, each said centrifugal retaining plate directly interposed between one said horizontal flange and ...

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Номер записи: 69
21-03-2019 дата публикации

DYNAMIC SEALING DEVICE

Номер: US20190085980A1
Автор: BERENGER Brice, MATTONI Gaëtan
Принадлежит:

Disclosed is a dynamic sealing device configured to provide sealing between at least a first part and at least a second part having a relative rotational movement in relation to the first part. The device includes a seal provided with a first lip and with a second lip extending from a body portion, the first lip facing the second lip, the seal being formed from a first predetermined material having a first coefficient of friction, and a ring formed from a second predetermined material different from the first predetermined material and having a second coefficient of friction different from the first coefficient of friction. The ring is securely connected with the seal at the location of the body portion and the first coefficient of friction of the first predetermined material forming the seal is greater than the second coefficient of friction of the second predetermined material forming the ring. 110. A dynamic sealing device () configured to provide sealing between at least a first part and at least a second part having a relative rotational movement in relation to the first part , the device comprising:{'b': 11', '12', '13', '14', '12', '13', '11, 'a seal () provided with a first lip () and with a second lip () extending from a body portion (), the first lip () facing the second lip (), the seal () being formed from a first predetermined material having a first coefficient of friction, and'}{'b': '18', 'a ring () formed from a second predetermined material different from the first predetermined material and having a second coefficient of friction different from the first coefficient of friction;'}{'b': 18', '11', '14', '11', '18, 'wherein the ring () is securely connected with the seal () at the location of the body portion () and wherein the first coefficient of friction of the first predetermined material forming the seal () is greater than the second coefficient of friction of the second predetermined material forming the ring ().'}2. A device according to ...

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Номер записи: 70
21-03-2019 дата публикации

SEAL RING AND SEALING DEVICE

Номер: US20190085981A1
Автор: OGA Teppei, YAMAGUCHI Hitoshi
Принадлежит:

To fulfill a sealing function for a fluid within a short period of time when a pump configured to pressure-feed the fluid is activated, provided are a seal ring, including: a first side surface (); a second side surface () being a side surface on a side opposite to the first side surface (); and a first side-surface side projecting portion () formed on the first side surface (), in which a distal end portion () of the first side-surface side projecting portion () projects most toward an outward side from the first side surface () as compared to an entire surface of the first side surface () except for the distal end portion (), and a sealing device using the same. 1. A seal ring , comprising:a first side surface;a second side surface being a side surface on a side opposite to the first side surface; anda first side-surface side projecting portion formed on the first side surface,wherein a distal end portion of the first side-surface side projecting portion projects most toward an outward side from the first side surface as compared to an entire surface of the first side surface except for the distal end portion, andwherein a sectional shape of a cross section of the seal ring, which is orthogonal to a circumferential direction, is asymmetric with respect to a radial center line that divides the sectional shape into two sides corresponding to one side and another side of a center axis of the seal ring.2. A seal ring according to claim 1 , wherein the first side-surface side projecting portion comprises three or more first side-surface side projection portions which are formed discretely in a circumferential direction of the seal ring.3. A seal ring according to claim 1 , wherein a sectional shape of a cross section of the distal end portion of the first side-surface side projecting portion claim 1 , which is orthogonal to the circumferential direction claim 1 , is any shape selected from an arc shape and a flat surface shape.4. (canceled)5. A seal ring according to ...

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Номер записи: 71
01-04-2021 дата публикации

MIXING DEVICE COMPRISING A SEAL

Номер: US20210094007A1
Автор: MATTER Tobias, MÜNKEL Stefan, Seiler Andreas
Принадлежит: MASCHINENFABRIK GUSTAV EIRICH GMBH & CO. KG

A mixing device includes a mixing container for receiving mixing material and a mixer cover, wherein a first seal and a second seal is provided between the mixing container and the mixer cover. The first seal and the second seal are so arranged that a first air space is formed between the first seal and the second seal. 1. A mixing device comprising a mixing container for receiving mixing material and a mixer cover , wherein a first seal is provided between the mixing container and the mixer cover , wherein there is a mixer stand and the mixing container is mounted rotatably about an axis of rotation with respect to the mixer stand and the mixing device has a drive with which the mixing container can be rotated about the axis of rotation , wherein the mixer cover is fixed to the mixer stand , characterised in that there is provided a second seal and the first and the second seal are so arranged that a first air space is formed between the first and the second seal.2. The mixing device according to claim 1 , wherein the mixing container is cylindrical and has an edge surface claim 1 , wherein the first seal is in contact with the edge surface claim 1 , wherein preferably also the second seal is in contact with the edge surface.3. The mixing deice according to claim 1 , wherein the first seal seals off the first air space with respect to the interior of the mixing container while the second seal seals off the first air space with respect to the exterior of the mixing container and there is provided a first fluid passage having a first fluid passage opening which is arranged in the first air space claim 1 , by way of which fluid can be fed into the first air space or fluid can be sucked out of the first air space.4. The mixing device according to claim 1 , wherein the first and the second seal are elastic claim 1 , wherein the first and the second seal are so arranged that the first seal is deflected elastically in the direction of the interior of the mixing container ...

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Номер записи: 72
26-06-2014 дата публикации

SHAFT SEAL WITH RETENTION FEATURES AND OVERMOLDED SEAL COMPONENT

Номер: US20140175757A1
Автор: Ellison Max, Luchs Berndt L.
Принадлежит:

A seal component for a shaft seal assembly includes an elastomeric element and a substrate, wherein the seal component has an over-molded configuration in which the elastomeric element is over-molded onto the substrate. In one embodiment, the elastomeric element includes a pair of flexible arms that are compressible about an apex to energize the seal component. In another embodiment, the shaft seal assembly includes twist lock retention features for retaining the seal component within the housing structure. The seal component includes a plurality of locking features, and a plurality of cooperating locking slots is provided in the housing structure that respectively receive the locking features of the seal component. Specifically, when the seal component is rotated relative to the housing structure from an initial position to a second locked position, the locking features are compressed within the locking slots of the housing structure in the second locked position. 1. A seal component for a shaft seal assembly comprising:an elastomeric element; anda substrate;wherein the seal component has an over-molded configuration in which the elastomeric element is over-molded onto the substrate.2. The seal component of claim 1 , wherein:the elastomeric element defines an over-molding recess;the substrate includes an over-molding extension; andin the over-molded configuration, the over-molding recess receives the over-molding extension.3. The seal component of claim 2 , whereinthe elastomeric material includes a pair of flexible arms that are compressible about an apex adjacent the over-molding recess.4. The seal component of claim 3 , wherein at least one of the flexible arms defines a spring recess configured to receive a spring.5. A shaft seal assembly comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the seal component of ;'}a housing structure that receives the seal component; anda cap structure that extends over at least a portion of the housing structure; ...

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Номер записи: 73
01-04-2021 дата публикации

SEALING DEVICE AND MANUFACTURING METHOD THEREFOR

Номер: US20210095581A1
Автор: KISHIRO Masamichi, NISHIMURA Nobuhiro
Принадлежит: NOK CORPORATION

A sealing device seals a rod having a cylindrical part and a cylindrical guide that guides reciprocation of the rod in an axial direction of the rod. The sealing device includes an elastic ring formed of an elastic material, and a rigid ring formed of a rigid material fixed to the elastic ring for reinforcing the elastic ring. The elastic ring includes a lip with which an outer peripheral surface of the rod is in slidable contact. The rigid ring includes a rigid-ring cylindrical part located radially outside an end portion of the guide. The rigid-ring cylindrical part includes multiple hook hasps engaged into at least one recess formed on an outer peripheral surface of the guide. Each of the multiple hook hasps includes a root portion and a distal end portion located radially inward of the root portion and fitted into the recess. A thin portion is formed at the root portion of the hook hasp, the thin portion being thinner than other parts of the hook hasp. 1. A sealing device for sealing a rod having a cylindrical part and a cylindrical guide that guides reciprocation of the rod in an axial direction of the rod , comprising:an elastic ring formed of an elastic material; anda rigid ring formed of a rigid material fixed to the elastic ring for reinforcing the elastic ring,the elastic ring comprising a lip with which an outer peripheral surface of the rod is in slidable contact,the rigid ring comprising a rigid-ring cylindrical part located radially outside an end portion of the guide,the rigid-ring cylindrical part comprising multiple hook hasps engaged into at least one recess formed on an outer peripheral surface of the guide,each of the multiple hook hasps comprising a root portion and a distal end portion located radially inward of the root portion and fitted into the recess,a thin portion being formed at the root portion of the hook hasp, the thin portion being thinner than other parts of the hook hasp.2. The sealing device according to claim 1 , wherein the thin ...

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Номер записи: 74
12-05-2022 дата публикации

Internally Clamping Rectangular Sealing Ring

Номер: US20220145993A1
Автор: Heine Matthias, Kramp Heino, Michailidis Michail
Принадлежит:

The invention relates to an internally clamping rectangular seal () for sealing a shaft () with respect to a housing (), wherein the rectangular seal can be inserted into a groove () disposed circumferentially on a shaft bore (), wherein the rectangular seal is interrupted along its circumferential direction at a joint () and two ring-end sections () are formed, and wherein the rectangular seal has an outer surface () facing radially outwards, an inner clamping surface () facing radially inwards and opposing flank surfaces () facing in the axial direction. Therefore, provision is made that at least one contact ramp () is disposed at at least one ring-end section, that the at least one contact ramp is oriented obliquely with respect to the circumferential direction and obliquely with respect to the radial direction of the rectangular seal, and that the at least one contact ramp, starting from a non-stressed state of the rectangular seal, forms a first mechanical contact, pointing in the circumferential direction, between the opposing ring-end sections when the radius of the rectangular seal is reduced by prestressing the rectangular seal. 115-. (canceled)16: An internally clamping rectangular seal for sealing a shaft with respect to a housing , wherein the seal can be inserted into a groove disposed circumferentially in a shaft bore of the housing , the seal comprising:a seal ring including two ring-end sections, the two ring-end sections forming a joint interrupting the seal ring along a circumferential direction, the seal ring including an outer surface facing radially outwards, an inner clamping surface facing radially inwards, and opposing flank surfaces facing in opposite axial directions;wherein at least one of the ring-end sections includes at least one contact ramp oriented obliquely with respect to both the circumferential direction and the radial direction of the seal ring, the at least one contact ramp being configured such that starting from a non- ...

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Номер записи: 75
28-03-2019 дата публикации

PRESSURE-ACTIVATABLE ROTARY SEAL AND ROTARY SEAL ASSEMBLY

Номер: US20190093771A1
Автор: JORDAN Holger, Wilke Mandy
Принадлежит:

A rotary seal seals a high-pressure region from a low-pressure region and has an assembly sleeve made of a rubber elastic material and at least one pressure-activatable rotary seal element with a seal edge. When a specified differential pressure value is exceeded, the seal edge of the rotary seal element rests sealingly against the seal surface of a machine part, thereby directly displacing a support element elastically supported on the rubber elastic assembly sleeve. When the specified differential pressure value is undershot, the support element is moved rearwards axially in the direction of the high-pressure region such that the seal edge of the rotary seal element is moved backwards into the seal edge rest position in which the rotary seal element lies against the seal surface without contact surface pressure or substantially without contact surface pressure or is arranged at a distance from the seal surface. 1. A rotary seal assembly , comprising:a first machine part and a second machine part rotatable about an axis of rotation relative to the first machine part, wherein one of the two machine parts comprises a seal retaining structure, and the other of the two machine parts comprises a sealing surface, and having a rotary seal arranged on the seal retaining structure of one machine part in order to seal a high-pressure region H from a low-pressure region N of the rotary seal assembly;an installation sleeve made of a rubber-elastic material;at least one pressure-activatable rotary seal element, which has a sealing edge, is arranged in or on the installation sleeve and extends away from the installation sleeve towards the sealing surface;a support body, which rests, on the low-pressure-region side, against a support region of the rubber-elastically deformable installation sleeve and on which the rotary seal element is directly supported on the low-pressure-region side such that the sealing edge is arranged, in a non-pressurized operating state, in an inactive ...

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Номер записи: 76
28-03-2019 дата публикации

Rotating Seal Mechanism

Номер: US20190093949A1
Автор: Zhu Shuhong
Принадлежит:

A rotating seal mechanism, provided between a fixed body and a rotating body, and comprising: a sealing assembly rotatably connected to the rotating body and disposed on a circumference of the rotating body; a flexible connecting body connecting the sealing component and the fixed body; and a circumferential limiting component disposed on the sealing assembly. The rotating seal mechanism compensates for bouncing movement between and sealingly joins the fixed body and the rotating body. 1. A rotating seal mechanism disposed between a fixed body and a rotating body , comprising: a sealing assembly disposed on a circumference of the rotating body and rotatably connected to the rotating body; a flexible connecting body connected with the sealing assembly and the fixed body; and a circumferential limiting component disposed on the sealing assembly.2. The rotating seal mechanism according to claim 1 , wherein a follower support component is disposed on the sealing assembly claim 1 , and the follower support component is a supporting roller claim 1 , a supporting ring or a supporting block claim 1 , and can roll or slide on an outer circumference of the rotating body and defines a coaxiality between the sealing assembly and the rotating body.3. The rotating seal mechanism according to claim 1 , wherein the sealing assembly comprises a sealing frame body claim 1 , and the sealing frame body is provided therein with a sealing ring claim 1 , a positioning ring for a sealing ring claim 1 , and a gland for a sealing ring claim 1 , the positioning ring for the sealing ring adjoins the sealing frame body and abuts against the sealing ring in a direction close to the rotating body claim 1 , the gland for the sealing ring tightly presses the sealing ring and the positioning ring for the sealing ring in a height direction of the rotating body claim 1 , and the three components cooperate with one another to achieve sealing.4. The rotating seal mechanism according to claim 3 , wherein ...

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Номер записи: 77
06-04-2017 дата публикации

Rotary sealing arrangement

Номер: US20170097093A1
Автор: JORDAN Holger
Принадлежит:

A rotary seal arrangement has a rotatably mounted machine part and a machine part that forms a bearing for the rotatably mounted machine part. One of the machine parts forms a seal accommodating structure and the other one of the machine parts has a surface forming a sealing surface. At least one rotary seal is arranged in the seal accommodating structure. The rotary seal seals off a high-pressure area from a low-pressure area between the machine parts. 2. The rotary feed-through of claim 1 , wherein said sealing surface is constituted as a lateral surface of a cylinder and said contact body is at least partially disposed claim 1 , in an axial direction of the rotatably mounted machine part claim 1 , between said support element and said sealing ring.3. The rotary feed-through of claim 1 , wherein said sealing surface is disposed on an end face of the rotatably mounted machine part extending perpendicular to an axis of rotation of that rotatably mounted machine part claim 1 , wherein said contact body is at least partially disposed claim 1 , in a radial direction of the rotatably mounted machine part claim 1 , between said support element and said sealing ring.4. The seal of claim 1 , wherein said second machine part is constituted as a radial shaft mounted in said first machine part and said rotary seal is ring-shaped and disposed about said radial shaft.5. The rotary feed-through of claim 1 , wherein said support element is constituted integrally with said first machine part as part of said seal-accommodating structure.6. The rotary feed-through of claim 1 , wherein said contact body extends claim 1 , in a radial direction of said rotary seal claim 1 , between said sealing ring and said seal-accommodating structure claim 1 , said sealing ring being pretensioned in the radial direction toward said second machine part by an elastic restoring force of said contact body.7. The rotary feed-through of claim 1 , wherein said contact body has an area in contact with said ...

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Номер записи: 78
12-04-2018 дата публикации

SEAL AND CORRESPONDING MANUFACTURING METHOD

Номер: US20180100585A1
Автор: Bertini Mario, Ravanelli Raffaello
Принадлежит: Tenute S.R.L.

A seal comprises an annular portion having a static seal surface in contact with a first element and made of an elastomeric material. An annular lip exerts a dynamic seal in relation to a second element. A garter spring and a leaf spring cooperate to maintain the annular lip in an operating configuration abutting on a sliding surface of the second element, whilst an annular locking element holds in position the leaf spring 1. Method for making a seal , comprising the steps of:compression-moulding an annular body comprising an annular portion and at least an annular lip, said annular portion having a seal surface configured for the static seal in relation to a first element, said annular portion being made of an elastomeric material, said at least an annular lip being configured for the dynamic seal in relation to a second element, said annular lip having a dynamic seal zone and a fixing zone, said dynamic seal zone extending in a circumferal direction around an axis, in particular an axis coinciding with a relative rotation axis between the first element and the second element, said fixing zone being fixed to said annular portion;providing an elastic arrangement having a first end, intended for maintaining said dynamic seal zone of the annular lip in a seal operating configuration, and a second end opposite the first end;providing an annular locking element for locking said second end of the elastic arrangement;assembling together said moulded annular body, said elastic arrangement and said annular locking element so that said first end of the elastic arrangement is configured for maintaining said dynamic seal zone of the annular lip in a seal operating configuration and said second end of the elastic arrangement is interposed between said annular locking element and said seal surface.2. Method according to claim wherein said compression-moulding step comprises the secondary steps of:inserting into a mould a first element made of elastomeric material;inserting into ...

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Номер записи: 79
13-04-2017 дата публикации

Gasket with a constant section

Номер: US20170102101A1
Автор: Ludovic Duval-Arnould
Принадлежит: Joint Francais SNC

An annular gasket intended to provide a tight assembly between a first and second pipe after crimping, including an axis of revolution, whereof a section parallel to said axis is a curve formed by a series of an odd number of circle segments C i connected by apices S i forming a regular polygon, i varying from 1 to 2*n+1, n being a positive integer greater than or equal to 1, the apex S i being the center of the circle passing through the apices S i+n and S i+n+i modulo 2*n+1. Such a curve is said to have a constant width. The apices S i advantageously form a polygon.

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Номер записи: 80
23-04-2015 дата публикации

WHEEL BEARING DEVICE

Номер: US20150110432A1
Автор: TAKAMATSU Kazuki, WAKISAKA Teruyuki
Принадлежит:

A sealing device includes a core metal that is fitted to the outer ring, and a sealing member that is fixed to the core metal. The core metal has a cylindrical portion that is fitted to the inner periphery of an end portion of the outer ring, an outer annular portion, and an inner annular portion. The sealing member has a covering portion that covers the outer annular portion and the cylindrical portion, and a space is formed between the covering portion and the flange. The sealing member further has an inner lip portion, and an outer lip portion. The covering portion has a deformed portion used to enlarge the space to suppress stagnation of water in the space. 1. A wheel bearing device comprising:an inner ring having a flange;an outer ring located radially outward of the inner ring;rolling elements disposed between the inner ring and the outer ring; anda sealing device that prevents foreign matter from entering an inside of a bearing, in which the rolling elements are located, whereinthe sealing device includes a core metal that is fitted to the outer ring, and a sealing member that is fixed to the core metal,the core metal has a cylindrical portion that is fitted to an inner periphery of an end portion of the outer ring, an outer annular portion that extends radially outward from the cylindrical portion and that is brought into contact with an end face of the outer ring, and an inner annular portion that extends radially inward from the cylindrical portion,the sealing member has a covering portion that covers a flange side-portion of the outer annular portion and an inner peripheral side portion of the cylindrical portion, a space being formed between the covering portion and a side face of the flange, the sealing member having an inner lip portion that extends from the inner annular portion toward the flange and is in sliding contact with an inner seal face of the flange, and an outer lip portion that extends from the outer annular portion toward the flange, a ...

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Номер записи: 81
20-04-2017 дата публикации

SEAL RING

Номер: US20170107865A1
Автор: YASUDA Ken
Принадлежит:

The present invention provides a seal ring, for a variable valve timing system, which is resistant to breakage when the seal ring is expanded at a seal ring mounting time even in a case where the seal ring is thick and allowed to have a complicated configuration by performing injection molding and achieve a small oil leak, a low degree of friction, and improved wear resistance. In the variable valve timing system having a camshaft () for driving an intake valve of an internal combustion engine and an exhaust valve thereof, an inner rotational body () fixed to the camshaft (), an outer rotational body () making a rotational motion relative to the inner rotational body () by supply of hydraulic oil at a time of altering opening and closing timings of the intake valve and the exhaust valve, and a shaft body () mounted on rotational body (). 1. In a variable valve timing system comprising a camshaft for driving an intake valve of an internal combustion engine and an exhaust valve thereof; an inner rotational body fixed to said camshaft; an outer rotational body making a rotational motion relative to said inner rotational body by supply of hydraulic oil at a time of altering opening and closing timings of said intake valve and said exhaust valve; and a shaft body mounted on an inner circumference of said inner rotational body concentrically with said inner rotational body and said outer rotational body , a seal ring seals annular passages , formed between said inner rotational body and said shaft body , which serve as an oil passage of said hydraulic oil ,wherein said seal ring is formed by molding a polyphenylene sulfide resin composition containing polyphenylene sulfide resin as a main component thereof and an elastomer.2. A seal ring of said variable valve timing system according to claim 1 , which partitions said two annular passages linked respectively with a pair of hydraulic oil chambers constructed of said inner rotational body and said outer rotational body for ...

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Номер записи: 82
02-04-2020 дата публикации

HALO SEAL SEPARATE SCALLOP SUPPORT

Номер: US20200102846A1
Автор: Chuong Conway, DiFrancesco Michael L.
Принадлежит: UNITED TECHNOLOGIES CORPORATION

A seal arrangement may comprise a seal comprising an outer ring, a shoe, and an arm extending between the shoe and the outer ring, wherein the shoe moves relative to the outer ring via the arm, a seal ring adjacent the seal, and a support plate disposed between the seal and the seal ring, wherein the support plate moves together with the shoe in a radial direction relative to the seal ring. 1. A seal arrangement comprising:a seal comprising an outer ring, a shoe, and an arm extending between the shoe and the outer ring, wherein the shoe moves relative to the outer ring via the arm;a seal ring adjacent the seal; anda support plate disposed between the seal and the seal ring, wherein the support plate is configured to move together with the shoe in a radial direction relative to the seal ring.2. The seal arrangement of claim 1 , wherein the seal claim 1 , the seal ring claim 1 , and the support plate are coaxial.3. The seal arrangement of claim 2 , wherein the outer ring is in contact with the seal ring claim 2 , the arm is spaced apart from the seal ring claim 2 , and the shoe is spaced apart from the seal ring.4. The seal arrangement of claim 3 , further comprising a fastener coupled between the shoe and the support plate claim 3 , the fastener configured to prevent the support plate from moving relative to the shoe.5. The seal arrangement of claim 3 , further comprising a pin coupled between the shoe and the support plate claim 3 , the pin configured to prevent the support plate from moving relative to the shoe.6. The seal arrangement of claim 3 , wherein the shoe is coupled to the support plate via at least one of a weld claim 3 , a solder claim 3 , or a braze.7. The seal arrangement of claim 2 , wherein the seal comprises an annular geometry claim 2 , the seal ring comprises an annular geometry claim 2 , and the support plate comprises an annular geometry.8. The seal arrangement of claim 1 , further comprising a carrier ring claim 1 , wherein the seal claim 1 , ...

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Номер записи: 83
11-04-2019 дата публикации

SEALING APPARATUS

Номер: US20190107155A1
Автор: Kato Takuya
Принадлежит:

A sealing apparatus main body includes a reinforcing ring and an elastic material portion which is attached to the reinforcing ring and formed of an elastic material. The elastic material portion has a side lip formed so as to contact a slinger from the inside, a radial lip formed so as to contact the slinger from an outer periphery side, and an outer peripheral annular projection being an annular projection which is arranged on an outer periphery side of the side lip and protrudes to the outside. The slinger has a fitting portion and a flange portion extending from an outer end portion of the fitting portion to the outer periphery side. The elastic material portion forms a labyrinth seal between the outer peripheral annular projection and the side lip between the elastic material portion and the flange portion of the slinger. 1. A sealing apparatus for sealing a space between an outer periphery side member and an inner periphery side member which is at least partially enclosed by the outer periphery side member , the outer periphery side member and the inner periphery side member being rotatable relative to each other with respect to an axis , the sealing apparatus being characterized by comprising:a sealing apparatus main body attached to the outer periphery side member; andan opposing portion having an annular shape around the axis that is provided on the inner periphery side member on one side in a direction of the axis of the sealing apparatus main body,wherein the sealing apparatus main body includes a reinforcing ring having an annular shape around the axis, and an elastic material portion having an annular shape around the axis which is attached to the reinforcing ring and formed of an elastic material,the elastic material portion includes a side lip formed so as to contact the opposing portion from the other side in the direction of the axis, a radial lip formed so as to contact the opposing portion from an outer periphery side, and an outer peripheral ...

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Номер записи: 84
11-04-2019 дата публикации

SEAL ASSEMBLY WITH ENERGIZER AND SEAL ELEMENT

Номер: US20190107203A1
Автор: Iversen Gert, James Stephen, Sitko Mark C., Thorndal Simone Kaare
Принадлежит: TRELLEBORG SEALING SOLUTIONS US, INC.

A seal assembly for sealing between a first machine part and a second machine part. The first machine part has a housing groove with a side wall. The seal assembly includes a compression ring for being placed within the housing groove and a seal element for being placed within the housing groove. The seal element is energized by the compression ring and separates the compression ring from the side wall of the housing groove and the second machine part. The seal element has a seal bottom portion with a seal apex for contacting the second machine part, and a seal back portion for contacting the side wall of the housing groove. In a first position of the seal element the seal back portion extends axially inwardly from the side wall of the housing groove. 1. A seal assembly for sealing between a first machine part and a second machine part , the first machine part has a housing groove with a side wall , said seal assembly comprising:a compression ring for being placed within said housing groove; anda seal element for being placed within said housing groove, energized by the compression ring, and separating said compression ring from said side wall of the housing groove and the second machine part, said seal element having a seal bottom portion with a seal apex for contacting the second machine part, and a seal back portion for contacting the side wall of the housing groove, said back portion includes a back apex such that said seal element is axially flexible and axially moves relative to said housing groove so that in a first position of the seal element said seal back portion contacts said side wall at the back apex and the seal back portion extends axially inwardly from said side wall of the housing groove, and in a second position of the seal element the seal back portion completely contacts said side wall.2. (canceled)3. The seal assembly according to claim 1 , wherein in said first position said seal apex is located at a first distance from said side wall of the ...

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Номер записи: 85
09-06-2022 дата публикации

SEALING DEVICE

Номер: US20220178448A1
Автор: KIKUCHI Kenichi
Принадлежит: NOK CORPORATION

A sealing device includes a reinforcement ring and an annular elastic body portion including a main body covering the reinforcement ring, a lip waist portion including an inner circumferential edge portion of the main body, a main lip extending from the lip waist portion to a first target side to be sealed and is to be in slidable contact with a rotary shaft, and a second dust lip extending from the lip waist portion to a second target side opposite to the first target side relative to the sealing device and being provided relative to the main lip with an annular space between the second dust lip and the main lip. The second dust lip includes a first lip slide portion being to be in slidable contact with the rotary shaft, a first protrusion formed on an inner circumferential surface of the second dust lip and closer to the first lip slide portion, and a second protrusion formed on the inner circumferential surface and closer to the lip waist portion than the first protrusion. 1. A sealing device configured to seal an annular gap between two members coupled concentrically and rotatably relative to each other , the sealing device comprising:a reinforcement ring; andan annular elastic body portion comprising:(a) a main body covering the reinforcement ring;(b) a lip waist portion comprising an inner circumferential edge portion of the main body;(c) a main lip extending from the lip waist portion to a first target side to be sealed and is to be in slidable contact with one of the two members; and(d) at least one dust lip extending from the lip waist portion to a second target side opposite to the first target side relative to the sealing device and being provided relative to the main lip with an annular space between the at least one dust lip and the main lip, the at least one dust lip comprising:(i) a first lip slide portion being to be in slidable contact with the one of the two members;(ii) a first protrusion formed on an inner circumferential surface of the at least ...

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Номер записи: 86
07-05-2015 дата публикации

BUFFER RING

Номер: US20150123351A1
Автор: Nakamura Takafumi
Принадлежит: NOK CORPORATION

A buffer ring includes an annular body portion that makes close contact with a side wall face of an annular groove ; an inner peripheral lip that extends toward a sealed fluid side O from an inner peripheral end portion of the body portion ; and an outer peripheral lip that extends toward the sealed fluid side O from an outer peripheral end portion of the body portion and having an outer peripheral end portion making close contact with a groove bottom face of the annular groove , the outer peripheral lip being lower in stiffness than the inner peripheral lip , wherein a plurality of protrusions that make close contact with the groove bottom face of the annular groove are provided on an outer peripheral face of the body portion at intervals in a circumferential direction. 1an annular body portion that makes close contact with a side wall face of the annular groove;an inner peripheral lip that extends toward a sealed fluid side from an inner peripheral end portion of the body portion, the inner peripheral lip including an inner peripheral end portion, the inner peripheral end portion of the inner peripheral lip being slidable relative to an outer peripheral face of the shaft; andan outer peripheral lip that extends toward the sealed fluid side and an outer peripheral side so as to be inclined from an outer peripheral end portion of the body portion, the outer peripheral lip including an outer peripheral end portion, the outer peripheral end portion of the outer peripheral lip making close contact with a groove bottom face of the annular groove, the outer peripheral lip being lower in stiffness than the inner peripheral lip,the body portion including an outer peripheral face, the outer peripheral face being provided with a plurality of protrusions that make close contact with the groove bottom face of the annular groove, the plurality of protrusions being located at intervals in a circumferential direction and at locations that are within a region of the outer ...

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Номер записи: 87
18-04-2019 дата публикации

SEALING STRUCTURE WITH ANNULAR POCKET AND SEALING DEVICE

Номер: US20190113080A1
Автор: KAMIYA Yusuke, MATSUI Hiroki, MIZUTA Hirotaka, NAKASHIMA Toru, Omoto Shinya
Принадлежит:

A sealing structure with an annular pocket and a sealing device includes an annular pocket and a sealing device. The pocket is provided in a slinger, and the sealing device is attached to a housing of a differential device. The slinger is arranged on an output shaft of the differential device. A recessed part of the pocket is defined by an inner peripheral tubular portion, an outer peripheral tubular portion and a bottom portion of the slinger. The outer peripheral surface of the pocket is formed in the outer peripheral tubular portion of the slinger. The outer peripheral surface of the pocket increases in diameter toward the outside in an axis direction. A side lip of the sealing device extends in the outward direction, and an annular gap is formed between the side lip and the pocket. 1. A sealing structure with an annular pocket and a sealing device ,wherein the pocket has an outer peripheral surface having an annular shape around an axis and extending along the axis, forms a recessed part which has an annular shape around the axis and is recessed to one side in a direction of the axis, and is provided to a shaft member that penetrates through a through-hole of an attachment target portion to which the sealing device is attached, and is rotatable around the axis, or a functional member attached to the shaft member;the sealing device includes a seal lip having an annular shape around the axis, and a side lip which has an annular shape around the axis and extends to the one side in the direction of the axis, and is attached to the through-hole of the attachment target portion to perform sealing between the shaft member or the functional member and the through-hole;the outer peripheral surface of the pocket increases in diameter toward the one side in the direction of the axis; andin the sealing device attached to the attachment target portion, the seal lip is slidably in contact with the shaft member or the functional member directly or indirectly, and the side lip ...

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Номер записи: 88
18-04-2019 дата публикации

Press-in retainer ring

Номер: US20190113141A1
Автор: Daniel K. Zitting, Thomas Paul Zitting
Принадлежит: Daniel K. Zitting, Thomas Paul Zitting

A continuous length of formed metal retaining material can be cut to the partial or full circumference or perimeter of at least one assembly component and disposed in a groove of at least one assembly component to form a retaining ring engaging at least one other assembly component. The retaining ring prohibits lateral and rotational movement.

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Номер записи: 89
13-05-2021 дата публикации

METHOD OF MANUFACTURING SEALING MEMBER AND MOLD THEREFOR

Номер: US20210140544A1
Автор: Kato Takuya, SAKANO Yuya
Принадлежит: NOK CORPORATION

A sealing device seals a gap between an inner member and an outer member that rotate relative to each other. The sealing device includes a sealing member. The sealing member includes a rigid ring including a sleeve part and a flange part, and an elastic ring adhering closely to both surfaces of the flange part. The elastic ring includes an annular circular part and water-discharging protrusions on a side of the sleeve part of the rigid ring. The elastic ring includes an annular part on a side opposite the sleeve part. A mold for manufacturing the sealing member includes a first mold including a cylindrical cavity in which the sleeve part is supported, an annular circular cavity for forming the circular part, protrusion cavities for forming the water-discharging protrusions, and posts disposed in the circular cavity and being brought into contact with the flange part of the rigid ring. 1. A method of manufacturing a sealing member provided in a sealing device located between an inner member and an outer member that rotate relative to each other , for sealing a gap between the inner member and the outer member , the sealing member comprising a rigid ring formed of a rigid material and for being mounted on the inner member , the rigid ring comprising a sleeve part and a flange part extending radially outward from the sleeve part; and an elastic ring formed of an elastic material adhering closely to both surfaces of the flange part , the elastic ring comprising an annular circular part and multiple water-discharging protrusions on a side of the sleeve part of the rigid ring , the elastic ring comprising an annular part on a side opposite the sleeve part , the method comprising:preparing a first mold comprising a cylindrical cavity in which the sleeve part of the rigid ring is supported, an annular circular cavity for forming the circular part, multiple protrusion cavities for forming the multiple water-discharging protrusions, and multiple posts disposed in the circular ...

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Номер записи: 90
03-05-2018 дата публикации

Sealing device

Номер: US20180119820A1
Автор: Naoyuki Honma
Принадлежит: Nok Corp

A sealing device 1 is provided with, on an atmospheric side A inclined surface 24 of a seal lip, a forward direction screw 26 which extends in a direction of forming an angle of attack with respect to a direction Z of forward rotation of a rotation shaft 2 and exerts pumping action with respect to sealing target fluid during the forward rotation of the rotation shaft 2 , and a reverse direction screw 27 which extends in a direction of forming an angle of attack with respect to a direction of reverse rotation of the rotation shaft 2 and exerts pumping action with respect to the sealing target fluid during the reverse rotation of the rotation shaft 2 , in which a droplet prevention screw 29 for the sealing target fluid is provided on the reverse direction screw 27 side of the inclined surface 24 so as to be positioned in a region for forming the angle of attack.

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Номер записи: 91
04-05-2017 дата публикации

SEALING DEVICE

Номер: US20170122438A1
Автор: Hamamoto Kokichi, NAGAHAMAYA Hideaki, NAKAGAWA Takehiro, SATO Shiho
Принадлежит:

A sealing device capable of preventing turnover of a dust lip and damage to a dust lip caused by insertion of a shaft. A bumper portion () made of a rubber-like elastic body and reducing an impact that the dust lip () receives from the shaft when the shaft is inserted into the sealing device () is provided on the side opposite to the sealed area (O) with respect to the dust lip (), and an inner diameter of a tip of the bumper portion () on an inner peripheral side is set to be larger than an outer diameter of a part of the shaft on which a main lip () and the dust lip () slide and to be smaller than an inner diameter of a part having the largest inner diameter in a portion connecting the main lip () and the dust lip (). 1. A sealing device sealing an annular gap between a shaft and a housing , comprising:a reinforcing ring having an inward flange portion; anda seal main body made of a rubber-like elastic body, provided integrally with the reinforcing ring, and having a main lip that extends from a vicinity of a tip of the inward flange portion to a sealed area side, and slidably comes into contact with an outer peripheral surface of the shaft, and a dust lip that extends from the vicinity of the tip of the inward flange portion to a side opposite to the sealed area, and slidably comes into contact with the outer peripheral surface of the shaft, whereina bumper portion made of a rubber-like elastic body and reducing an impact that the dust lip receives from the shaft when the shaft is inserted into the sealing device is provided on the side of the dust lip opposite to the sealed area, and an inner diameter of a tip of the bumper portion on an inner peripheral side is set to be larger than an outer diameter of a part of the shaft on which the main lip and the dust lip slide and to be smaller than an inner diameter of a part having the largest inner diameter in a portion connecting the main lip and the dust lip.2. A sealing device sealing an annular gap between a shaft ...

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Номер записи: 92
12-05-2016 дата публикации

SEALING DEVICE

Номер: US20160131257A1
Автор: SAKAI Shintaro, Sakaji Katsuyuki, Takada Yoshito
Принадлежит:

A sealing device which allows the man-hour for mounting the sealing device to be reduced is provided. A sealing device includes: a slinger fitted and fixed to an end portion of an inner shaft; a core metal fitted and fixed to an end portion of an outer ring; an inner seal lip fixed to the core metal and in slidable contact with the slinger; an outer seal lip fixed to the core metal radially outward of the inner seal lip and in slidable contact with a side surface of a flange portion; and a labyrinth lip fixed to the core metal radially outward of the outer seal lip and forming a labyrinth seal together with the side surface of the flange portion. 1. A sealing device used in a rolling bearing apparatus which includes an inner shaft and an outer ring disposed so as to be concentric with each other and in which a flange portion having a side surface opposed to an end surface of the outer ring with a gap provided therebetween is integrally formed at an end portion of the inner shaft , the sealing device sealing an annular space between the inner shaft and the outer ring , the sealing device comprising:a slinger fitted and fixed to the end portion of the inner shaft and extending in a radially outward direction;a core metal fitted and fixed to an end portion of the outer ring;an inner seal lip fixed to the core metal and in slidable contact with the slinger;an outer seal lip fixed to the core metal radially outward of the inner seal lip and in slidable contact with the side surface of the flange portion; anda labyrinth lip fixed to the core metal radially outward of the outer seal lip, the labyrinth lip forming a labyrinth seal together with the side surface of the flange portion.2. The sealing device according to claim 1 , wherein the slinger includes: a cylindrical portion which is fitted and fixed to the end portion of the inner shaft; and an annular portion which extends in the radially outward direction from an end portion of the cylindrical portion and is disposed ...

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Номер записи: 93
31-07-2014 дата публикации

CARTRIDGE SEAL ASSEMBLIES AND ASSOCIATED METHODS

Номер: US20140210166A1
Автор: Balsells Pete, Changsrivong Derek, Dilmaghanian Farshid
Принадлежит: BAL SEAL ENGINEERING, INC.

The present cartridge seal assemblies pertain to rotary lip-type seals. In certain embodiments, a sealing member is constructed of a relatively hard material that increases the lifespan of the sealing member. The sealing member is energized with a canted-coil spring, which in some embodiments includes an adjustable spring force. The present embodiments enable control of sealing force to achieve an appropriate sealing force between the sealing member and the shaft based on factors such as temperature, pressure, rotary speed, properties of fluid media, etc. to achieve longer seal life. 1. A seal assembly for sealing around a rotatable shaft , the seal assembly comprising:a primary seal comprising a first sealing member having an inside flange with a seal lip for sealing against a movable shaft, a first sealing retaining ring engaging the first sealing member and together with the first sealing member defining a spring cavity having a canted coil spring located therein biasing against the seal lip and at least part of the first sealing retaining ring;a backing ring having a radial wall supporting a central portion of the first sealing member and having an outside longitudinal extending shelf and an inside longitudinal extending shelf, said inside longitudinal extending shelf supporting the inside flange of the first sealing member; anda secondary seal comprising a second sealing member having an inside flange with a seal lip for sealing against a movable shaft, a second sealing retaining ring engaging the second sealing member and together with the second sealing member defining a spring cavity having a second canted coil spring located therein biasing against the seal lip and at least part of the second sealing retaining ring; said second sealing retaining ring in contact with the outside longitudinal extending shelf to retain the secondary seal to the backing ring.2. The seal assembly of claim 1 , wherein the primary seal claim 1 , the backing ring claim 1 , and the ...

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Номер записи: 94
10-05-2018 дата публикации

Support providing a complete connection between a turbine shaft and a degassing pipe of a turbojet

Номер: US20180128180A1
Автор: Daniel Nicolas DELAPORTE, Emmanuel LINQUETTE, Noel Didier DURAND
Принадлежит: Safran Aircraft Engines SAS

The invention relates to a support providing a complete connection between a degassing pipe ( 3 ) and a turbine shaft ( 2 ), said support including a plurality of outer contact spans ( 41 a ) intended to bear on the inner walls of the turbine shaft to secure the degassing pipe with respect thereto, characterized in that the different spans are each bordered by at least one elastomer insert ( 41 g ) which contributes to the protection of the turbine shaft during insertion of the support therein.

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Номер записи: 95
23-04-2020 дата публикации

Wheelend assembly seal

Номер: US20200124179A1
Автор: Daniel T. JIMENEZ, David W. Bell, Mark N. Gold, Monte L. Pearson
Принадлежит: Stemco Products Inc

A wheelend assembly seal between the hub of a wheelend and a spindle shaft is provided. The wheelend assembly seal is a seal device having at least a static seal structure, a wear ring, and a dynamic seal structure. The dynamic seal structure comprises a resilient member that is biased such that in an uninstalled state, the resilient member diverges from an axially extending portion of the dynamic seal structure. When installed, the resilient member is compressed to be approximately parallel the axially extending portion and forms a seal between the surface of the resilient member and the outer surface of the spindle shaft.

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Номер записи: 96
03-06-2021 дата публикации

SEAL RING

Номер: US20210164571A1
Автор: HIROMATSU Jun, KASAHARA Hidetoshi, KIMURA Wataru, KONO Toru, OTA Takafumi, TAKIGAHIRA Yoshiaki, Tokunaga Yuichiro
Принадлежит:

A seal ring for sealing a clearance between a rotary shaft and a housing includes dynamic pressure grooves formed at a sliding surface of the seal ring and arranged in a circumferential direction so as to be configured to generate dynamic pressure. The dynamic pressure grooves include deep grooves having openings on a sealed fluid side and shallow grooves being shallower than the deep grooves. The shallower grooves are formed continuously to the deep grooves and extend to at least one side in the circumferential direction. 1. A seal ring for sealing a clearance between a rotary shaft and a housing , comprisingdynamic pressure grooves formed at a sliding surface of the seal ring and arranged in a circumferential direction so as to be configured to generate dynamic pressure, the dynamic pressure grooves including deep grooves having openings on a sealed fluid side and shallow grooves being shallower than the deep grooves, the shallower grooves being formed continuously to the deep grooves and extending to at least one side in the circumferential direction,wherein at least adjacent two of the deep grooves of the dynamic pressure grooves in the circumferential direction are formed as a dynamic pressure groove unit configured such that the adjacent two of the deep grooves communicate with each other through a communication groove extending in the circumferential direction on an opposite side of the openings of the deep grooves in a radial direction.2. The seal ring according to claim 1 , whereinthe shallow grooves are provided continuously to both sides of the deep grooves in the circumferential direction.3. The seal ring according to claim 1 , whereinthe dynamic pressure groove unit consists of two of the dynamic pressure grooves and the communication groove.4. The seal ring according to claim 1 , whereinall of the dynamic pressure grooves are formed as dynamic pressure groove units at the sliding surface.5. The seal ring according to claim 2 , whereinthe dynamic ...

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Номер записи: 97
17-05-2018 дата публикации

SEALING DEVICE

Номер: US20180135700A1
Автор: SENDA Mari
Принадлежит:

A sealing device including a sealing device main body mounted on one of two members that rotate relatively, and a seal flange mounted to the other of the two members The sealing device main body is provided with a structure provided with a seal lip slidably connected to a seal flange and a tube part positioned further to the outer side than the seal lip . A labyrinth lip is provided on the sealing device main body positioned further to the outer side than the seal lip and, the labyrinth lip extends towards the radially opposite side to the tip end of the seal flange facing the tube part in a radial direction, as the tip end closely faces the seal flange in an axial direction, and a labyrinth gap is formed between the labyrinth lip and the seal flange and the tube part 1. A sealing device , comprising:a sealing device main body mounted on one of two members that rotate relatively, and a seal flange mounted to the other of the two members;wherein, the sealing device main body is provided with a structure provided with a seal lip slidably connected to the seal flange, and a tube part positioned further to the outer side than the seal lip;a labyrinth lip is provided on the sealing device main body positioned further to the outer side than the seal lip; andthe labyrinth lip extends towards the radially opposite side to the tip end of the seal flange facing the tube part in a radial direction, as the tip end closely faces the seal flange in an axial direction, and a labyrinth gap is formed between the labyrinth lip and the seal flange, and the tube part.2. The sealing device according to claim 1 , wherein the seal flange is inclined further towards the labyrinth lip side on the tip end side than the opposite position of the tip end of the labyrinth lip. This application claims the benefit and priority of Japanese Application No. 2016-198667, filed Oct. 7, 2016. The entire disclosure of the above application is incorporated herein by reference.The present disclosure ...

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Номер записи: 98
18-05-2017 дата публикации

Crankshaft Seal Flange

Номер: US20170138481A1
Автор: Bantel Jochen, Lenz Roland, SCHÖCK Joachim, WERNER André
Принадлежит:

A crankshaft seal flange has a support made at least partially of a plastic material. The support has a passage with an inner wall. The support has at least one dynamic seal that extends about a circumference of the inner wall of the passage. At least one sensor is provided that detects crankshaft rotary speed and crankshaft position. The at least one sensor encompasses an electronic component group that is integrated into the plastic material of the support. 110.-. (canceled)11. A crankshaft seal flange comprising:a support comprised at least partially of a plastic material;the support comprising a passage with an inner wall;the support comprising at least one dynamic seal that extends about a circumference of the inner wall of the passage of the support;at least one sensor configured to detect a crankshaft rotary speed and a crankshaft position, wherein the at least one sensor is substantially comprised of an electronic component group;wherein the electronic component group is integrated into the plastic material of the support.12. The crankshaft seal flange according to claim 11 , wherein the electronic component group is integrated into the plastic material by injection molding the crankshaft seal flange.13. The crankshaft seal flange according to claim 11 , wherein the support has a first lateral face and a second lateral face claim 11 , wherein the passage of the support comprises a circumferentially closed wall section adjoined by a circumferentially extending claim 11 , flat annular surface disposed on the first lateral face of the support.14. The crankshaft seal flange according to claim 13 , wherein the electronic component group has a spacing from the inner wall of the passage of the support and the spacing is such that the at least one sensor interacts with a crankshaft trigger wheel.15. The crankshaft seal flange according to claim 11 , wherein the at least one sensor comprises a bushing part projecting away from the support claim 11 , wherein the ...

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Номер записи: 99
08-09-2022 дата публикации

SPLIT OIL SEAL COMPOSED OF DOUBLE SPRINGS AND DOUBLE RINGS

Номер: US20220282792A1
Автор: ZHANG JUN, ZHAO Jingwei
Принадлежит: AIGI Environmental Inc.

A split oil seal composed of double springs and double rings comprises an elastic outer ring intended to be statically mounted in a cavity outside a bearing box or gear box, and an elastic inner ring intended to be sleeved on a shaft of the device and held by the outer ring. The outer ring has an outer ring cut and the inner ring has an inner ring cut. The split oil seal further comprises a radial forcing element and a circumferential forcing element, wherein the radial forcing element exerts tension in both directions directed to outer circumferences and inner centers of both the outer ring and the inner ring in radial directions thereof, and the circumferential forcing element exerts a circumferential closing force to the inner ring. By using the split oil seal composed of double springs and double rings of the present invention, the advantages of convenient mounting and removal as well as strong anti-disengaging ability are achieved. 1101002020010100101001222101002020020200. A split oil seal composed of double springs and double rings , comprising an elastic outer ring ( , ) and an elastic inner ring ( , ) held by the outer ring ( , ) , the outer ring ( , ) having an outer ring cut () and the inner ring having an inner ring cut () , characterized in that said split oil seal further comprises a radial forcing element and a circumferential forcing element , the radial forcing element exerting tension in both directions and thus directed to outer circumferences and inner centers of both the outer ring ( , ) and the inner ring ( , ) in radial directions thereof , and the circumferential forcing element exerts a circumferential closing force to the inner ring ( , ).21010020200. The split oil seal according to claim 1 , characterized in that an embedded interference fit is formed between the outer ring ( claim 1 , ) and the inner ring ( claim 1 , ).330. The split oil seal according to claim 1 , characterized in that the radial forcing element is a finger spring ().440. ...

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Номер записи: 100