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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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28-11-2018 дата публикации

Осевой лепестковый газодинамический подшипник

Номер: RU0000185245U1
Автор: Дмитрий Петрович Холобцев, Юрий Александрович Равикович, Юрий Иванович Ермилов
Принадлежит: Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский авиационный институт (национальный исследовательский университет)"

Полезная модель относится к машиностроению, в частности к подшипникам скольжения с жидкостной и газовой смазкой, используемым в опорах роторов высокоскоростных турбомашин различного назначения. Осевой лепестковый газодинамический подшипник содержит упорный диск 2, корпус 1. Между диском 2 и корпусом 1 расположена плата 3. Между платой 3 и упорным диском 2 расположены гибкие лепестки 4 из тонкой металлической ленты, поддерживающие упорный диск 2. Лепестки 4 закреплены возле заднего края платы 3 через опорные элементы 5. Между каждым лепестком 4 и платой 3 расположено не менее двух листовых пружин 8, поддерживающих лепесток 4. Часть лепестка со стороны переднего края 12 имеет в недеформированном состоянии дугообразный профиль в окружном направлении. Профилированная часть лепестка составляет не меньше двух третей длины лепестка. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 185 245 U1 (51) МПК F16C 17/02 (2006.01) F16C 27/02 (2006.01) F16C 32/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F16C 17/02 (2018.08); F16C 27/02 (2018.08); F16C 32/06 (2018.08) (21)(22) Заявка: 2018133425, 21.09.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 21.09.2018 (45) Опубликовано: 28.11.2018 Бюл. № 34 2137954 C1, 20.09.1999. RU 2204064 C2, 27.11.2002. RU 2496032 C2, 20.10.2013. US 5248205 A, 28.09.1993. (54) Осевой лепестковый газодинамический подшипник (57) Реферат: Полезная модель относится к упорный диск 2. Лепестки 4 закреплены возле машиностроению, в частности к подшипникам заднего края платы 3 через опорные элементы 5. скольжения с жидкостной и газовой смазкой, Между каждым лепестком 4 и платой 3 используемым в опорах роторов расположено не менее двух листовых пружин 8, высокоскоростных турбомашин различного поддерживающих лепесток 4. Часть лепестка со назначения. Осевой лепестковый стороны переднего края 12 имеет в газодинамический подшипник содержит упорный ...

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Номер записи: 1
26-01-2012 дата публикации

Compliant Bearing

Номер: US20120020595A1
Автор: Jongsoo Kim
Принадлежит: Jongsoo Kim

A first embodiment of a compliant bearing includes a main body and a bearing surface. The main body and the bearing surface may be engaged with one another via one or more bearing surface springs configured such that the bearing surface is compliant with respect to the main body. A second embodiment of a compliant bearing includes a main body and at least one bearing pad. The main body and the bearing pad may be engaged with one another via one or more pad radial and/or pad axial springs configured such that the bearing pad is compliant with respect to the main body. A sensor web may be integrated into the compliant bearing. In one embodiment the sensor web comprises at least one sensor configured as a strain gauge and affixed to a bearing surface spring.

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Номер записи: 2
03-05-2012 дата публикации

Roller thrust bearing vibration isolator

Номер: US20120106887A1
Автор: Christopher Bean, Dana Patoine, Justin Brubaker
Принадлежит: Koyo Bearings North America LLC

A vibration isolator for use between a support structure and a roller thrust bearing including a first race, a second race, a bearing cage and at least one roller element. The vibration isolator includes a radially extending portion with a mating surface, a bearing surface, an inner peripheral edge and an outer peripheral edge, the radially extending portion being substantially disk-shaped. An annular flange extends axially from one of the inner peripheral edge and the outer peripheral edge of the radially extending portion, and at least one groove is defined by the mating surface of the radially extending portion. The bearing surface is configured to abut one of the first race and the second race and the mating surface is configured to abut the support structure such that a void is defined between the at least one groove and the support structure.

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Номер записи: 3
17-05-2012 дата публикации

Anisotropic bearing supports for turbochargers

Номер: US20120121446A1
Автор: Gerald D. Larue, Kostandin Gjika, Mohsiul Alam, Walter Lee Meacham
Принадлежит: Honeywell International Inc

An exemplary anisotropic member supports a semi-floating bearing in a bore and can reduce non-synchronous vibration of the bearing in the bore. An anisotropic member can include an annular body configured to receive a semi-floating bearing and to space the bearing a distance from a bore surface and can be configured to impart anisotropic stiffness and damping terms to the semi-floating bearing when positioned in the bore. Such a member is suitable for use in a rotating assembly for a turbocharger where the bearing may be a semi-floating bearing. Various exemplary members, bearings, housings, assemblies, etc., are disclosed.

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Номер записи: 4
24-05-2012 дата публикации

Bearing system for a worm in a steering gear

Номер: US20120125132A1
Автор: Dennis Fuechsel, Ekkehard Kneer, Jens-Uwe Hafermalz, Juergen Bieber, Marco Garu, Rainer Schaenzel, WERNER Bernhard
Принадлежит: ZF Lenksysteme GmbH

Disclosed is a bearing system for a worm engaging with a worm wheel as part of a steering gear, wherein the bearing system comprises at least one bearing with an outer ring, an inner ring, and rolling bodies that are movably accommodated between the outer an inner rings, the bearing being pivotally arranged in a bearing seat for accommodating the outer ring of the bearing, and wherein the inner ring accommodates one of the two shaft ends of the worm in order to seat said shaft end of the worm radially in the housing of the steering gear. For an improved dampening of the worm at least one spring element, which exerts a spring force on a region of the outer ring of the bearing, is provided at the bearing, said spring force supporting a pivotal motion of the worm toward the worm wheel.

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Номер записи: 5
21-06-2012 дата публикации

Bearing arrangement for high-speed shafts of machines

Номер: US20120155793A1
Автор: Christian Schaefer, Christopher Mitchell, Gerhard GOESS, Heiko Schmidt, Peter Solfrank
Принадлежит: Schaeffler Technologies AG and Co KG

A bearing arrangement for high-speed shafts of machines, such as rotor shafts of turbochargers. The bearing arrangement has a bearing housing that has at least one oil feed line and in the housing at least one bearing is installed. The bearing guides the shaft at least radially. The bearing has a ring with at least one oil bore. The ring forms an annular gap with the bearing housing. The bearing is a single-row rolling contact bearing, in which the shaft is guided directly or via an inner ring, preferably a two-part inner ring, and the ring is an outer ring of the rolling contact bearing.

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Номер записи: 6
05-07-2012 дата публикации

Fan bearing retaining structure

Номер: US20120170882A1
Автор: Wen-Hao Liu
Принадлежит: Asia Vital Components Co Ltd

A fan bearing retaining structure includes a fan base, a bearing and at least one resilient member. The fan base has a bearing bushing perpendicularly extending from one face of the fan base. The bearing bushing is formed with a bushing bore in which the bearing is disposed. An annular groove is formed on an inner circumference of the bearing bushing. The resilient member is fitted around the outer circumference of the bearing and correspondingly received in the annular groove. The resilient member serves to eliminate the gap between the bearing and the bearing bushing so as to avoid vibration of the bearing. In this case, the fan can operate more stably and the lifetime of the fan can be prolonged. Moreover, the noise can be minified.

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Номер записи: 7
08-11-2012 дата публикации

Foil thrust bearing applicable to high speed machining center

Номер: US20120281936A1
Автор: Hooshang Heshmat, Michael J. Tomaszewski
Принадлежит: Individual

A foil thrust bearing applicable to high speed machining and grinding machines for machining microscopic features. Top foil segments are circumferentially spaced relative to a rotating runner for engagement by the runner when the bearing is mounted to bearingly support runner rotation. Bump foil segments underlie and support and engage the top foil segments respectively. A thrust plate supports and engages the bump foil segments. Each top foil segment and each bump foil segment is secured only along an edge portion which is trailing relative to the runner rotation leaving an edge which is leading relative to runner rotation and a pair of side edges unsecured. Each bump foil segment includes tabs separated by slots extending from the leading edge at least partially to the secured edge portion. Each bump foil tab has substantially parallel ridges separated by flats.

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Номер записи: 8
20-12-2012 дата публикации

Turbocharger, notably for a combustion engine

Номер: US20120321491A1
Автор: Jeroen Wensing, Nicolas Berruet, Richard Corbett, Samuel Viault
Принадлежит: SKF AB

The turbocharger comprises a shaft 14 , a housing 12 , a turbine wheel 20 and a compressor wheel 22 mounted onto the shaft, and at least a rolling bearing 18 disposed between the shaft and the housing and comprising an inner ring 26 , an outer ring 28 and at least one row of rolling elements 30 disposed into a rolling space 40 defined between the rings. A damping space 38 is defined between an outer surface 28 a of the outer ring and a bore 16 of the housing inside which a lubricant is located.

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Номер записи: 9
27-12-2012 дата публикации

Rolling bearing arrangement

Номер: US20120328226A1
Автор: Andreas Kaiser, Peter Gloeckner
Принадлежит: Schaeffler Technologies AG and Co KG

A rolling bearing arrangement which has at least one rolling bearing outer ring of a rolling bearing, an intermediate element, and a housing part. The rolling bearing can be inserted into the housing part such that the intermediate element lies between the rolling bearing outer ring and the housing part. A first contact zone is formed between the rolling bearing outer ring and the intermediate element, and a second contact zone is formed between the intermediate element and the housing part. Formed on the first contact zone is a cooling system that has at least one cooling recess through which a cooling agent can flow. Formed on the second contact zone is a damping system that has at least one damping recess via which a damping cavity in the second contact zone can be filled with a damping medium.

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Номер записи: 10
10-01-2013 дата публикации

Hydrodynamic bearing intended to support a cylinder driven in rotation about its axis

Номер: US20130012111A1
Автор: Eric Romero
Принадлежит: Fives FCB SA

A hydrodynamic bearing for supporting a hollow cylinder that may be deformable in the radial direction, driven in a rotational movement about its axis, the diameter being greater than or equal to one meter, the bearing essentially consisting of a bushing and a bushing support, and in which the bushing, notably of constant thickness, extends over a portion of cylinder of axis δ, having a guide surface, intended to follow the exterior surface of the cylinder via a film of lubricant, and a surface secured to the bushing support. The bushing support has, if appropriate locally, at least in the region of an intermediate zone of the bearing, cross-section-reducing elements allowing elastic deformation of the bearing so as to limit the maximum value of the guide forces over the bushing. The bearing is useful in supporting and guiding a rotating hollow grinder subjected to unevenly distributed forces during rotation.

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Номер записи: 11
24-01-2013 дата публикации

Uncoupling system for an aircraft turbojet engine rotary shaft

Номер: US20130022448A1
Автор: Arnaud Fabrice Quenardel, Cedric Magret, Edouard Joseph Jadczak, Pierrick Ollivier
Принадлежит: SNECMA SAS

A decoupling system for a rotary shaft of an aircraft turbojet, the decoupling system including: a rolling bearing including rolling elements inserted between a first ring fastened to a stationary bearing support and a second ring mounted in a mounting chamber fastened to a rotary shaft; a transmission mechanism transmitting rotary torque from the rotary shaft to the second ring; a mechanism allowing the second ring to move radially relative to the mounting chamber when a static force associated with an unbalance affecting the rotary shaft exceeds a predetermined threshold; and a plurality of leaktight flexible bags interposed between the second ring and the mounting chamber and each including a heterogeneous structure including a porous capillary solid matrix and an associated liquid relative to which the matrix is lyophobic.

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Номер записи: 12
11-04-2013 дата публикации

Method for dynamically absorbing shocks in a power shaft, in particular a supercritical shaft, and shock-absorbing architecture for implementing said method

Номер: US20130089284A1
Автор: David Cazaux, Sylvain Pierre Votie
Принадлежит: Turbomeca SA

An architecture making it possible to provide sufficient absorption of shocks for a power shaft while maintaining rigidity at front bearings so as to not compromise meshing of power teeth of a drive pinion. A compressible dynamic shock absorption is provided in alignment with a downstream shock absorber of an additional meshing. An assembly for dynamically absorbing shocks for a power shaft includes upstream and downstream bearings including power rollers mounted on two casings and flanking a speed-reducing teeth meshing. The downstream bearing is coupled to at least one additional roller bearing associated with a compressible shock absorber to form a downstream shock absorber axially offset relative to the upstream bearing opposite the teeth meshing. Both downstream bearings are connectable by a flexible frame mounted on the common casing. The architecture can be used for power-transmission shafts, for example supercritical shafts in turbine engines.

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Номер записи: 13
23-05-2013 дата публикации

Mounting assembly

Номер: US20130128389A1
Автор: Andrew Robert Slayne, Simon Alan Hughes
Принадлежит: Individual

A tolerance ring is disclosed and can include a strip of material having a length, a first end, a second end opposite the first end, and a plurality of radially extending projections between the first and second ends. The strip of material can be curved into a ring having a gap. The radially extending projections are configured to be compressible between a bore and a shaft. A width and/or a height of a radially extending projection closest to the first end is different from a width and/or a height of a radially extending projection closest to a line extending perpendicular to the length and bisecting the strip of material within a circumferential row of the radially extending projections.

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Номер записи: 14
06-06-2013 дата публикации

ELASTIC RING BEARING

Номер: US20130142470A1
Автор: Hwang Yun-Cheol, Yoo Haw-Yale
Принадлежит:

The present invention relates to an elastic ring bearing, and more particularly, to an elastic ring bearing formed by inserting an elastic ring in a bearing used in various industrial apparatuses or vehicles so as to disperse the load applied to the bearing in accordance with rotation, thereby decreasing driving noise and vibration, and improving durability. The elastic ring bearing includes an inner wheel, an outer wheel, and a rolling element inserted between the inner wheel and the outer wheel. An outer wheel elastic ring is disposed between the outer wheel and the rolling element. 1. An elastic ring bearing in a bearing consisting of an inner wheel , an outer wheel and a rolling element inserted into between the inner wheel and the outer wheel , comprising:an outer wheel elastic ring which is disposed between the outer wheel and the rolling element.2. The bearing of claim 1 , wherein the outer wheel is formed of a first outer wheel and a second outer wheel claim 1 , and the outer wheel elastic ring is installed between the first and second outer wheels.3. The bearing of claim 2 , wherein a space part is formed between the outer wheel elastic ring and the first and second outer wheel.4. The bearing of claim 2 , wherein an engaging groove into which the outer wheel elastic ring is inserted is formed at the first and second outer wheels claim 2 , and an escape prevention shoulder is protruded from one side of the engaging groove.5. The bearing of claim 2 , wherein a first boss part formed of a plurality of fixing holes is formed at an outer edge portion of the first outer wheel claim 2 , and a second boss part formed of a plurality of hook parts inserted into the fixing hole is protruded from an outer edge portion of the second wheel.6. The bearing of claim 5 , wherein the fixing hole has a diameter which gradually increases toward the inner side.7. The bearing of claim 5 , further comprising a first engaging means which is inserted and engaged passing through the ...

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Номер записи: 15
13-06-2013 дата публикации

Bearing arrangement

Номер: US20130149141A1
Автор: Richard Andrew SINIAWSKI
Принадлежит: Rolls Royce PLC

A bearing arrangement 2 comprising an outer race 10 , a shaft 4 arranged to rotate with respect to the outer race 10 thereby defining an axis of rotation 8 of the shaft 4 . The shaft 4 and the outer race 10 are arranged to define a region of overlap between the shaft 4 and the outer race 10 along the axis of rotation. An inner race 12 is disposed between the outer race 10 and the shaft 4 in the region of overlap and coupled for rotation with the shaft 4 , the inner race 12 and the shaft 4 defining an annular reservoir 40 between them for accommodating radial expansion of the shaft 4 or radial displacement of the shaft 4 with respect to the axis of rotation 8.

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Номер записи: 16
20-06-2013 дата публикации

ROLLING BEARING FOR AIRCRAFT TURBOJET FITTED WITH IMPROVED MEANS OF AXIAL RETENTION OF ITS OUTER RING

Номер: US20130156574A1
Автор: Antunes Serge Louis, Brault Michel
Принадлежит: SNECMA

A structure for an aircraft turbojet including a rolling bearing including an outer ring, a bearing bracket, a retaining ring interposed between the ring and the bracket, a mechanism to connect the ring onto the bracket incorporating an attaching flange installed on the bearing bracket, a flexible connection attached to the ring and to the flange, and a mechanism enabling axial retention of the ring, in event the flexible connection fractures. The mechanism enabling axial retention includes a first stop securely attached to the retaining ring and capable of axially retaining this retaining ring relative to the bracket, and a second stop securely attached to the retaining ring, and capable of axially retaining the ring relative to the retaining ring. 17-. (canceled)8. A structure for an aircraft turbojet comprising:a rolling bearing including an outer ring;a bearing bracket surrounding the outer ring;a retaining ring interposed between the outer bearing ring and the bearing bracket; an attaching flange installed on the bearing bracket; and', 'flexible means for connection attached to the outer bearing ring and to the attaching flange;, 'means for connecting the outer ring to the bearing bracket, wherein the means for connecting includesmeant for allowing axial retention of the outer bearing ring, if the flexible connection means fracture,wherein the means enabling axial retention of the outer ring includes:first stop means securely attached to the retaining ring, and capable of axially retaining the retaining ring relative to the bearing bracket in event that the flexible connection means fracture; andsecond stop means securely attached to the retaining ring, and capable of axially retaining the outer ring relative to the retaining ring, in the event that the flexible connection means fracture,wherein the second stop means includes multiple slugs spaced circumferentially relative to one another, wherein each slug is held in a slug insertion opening made in the ...

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Номер записи: 17
11-07-2013 дата публикации

Bearing structure

Номер: US20130178298A1
Автор: Ataru HATOGAI
Принадлежит: Showa Corp

A bearing structure comprises a shaft member, a bearing, an inner ring, a ring-shaped mount which is made of an elastic material, is fixed to a vehicle body and encloses the inner ring, and a dust cover which is fixed to the bearing member and rotates in unison with the bearing member, the bearing member being supported rotatably on the vehicle body via the bearing. The mount includes, on a front side, a rib facing inward in a radial direction and extending in a circumferential direction so as to seal off a first gap formed between the shaft member and the inner ring. A second gap is formed between an inner radial end of the rib and the shaft member. The dust cover covers the rib and the second gap on the front side of the rib. A cutout is formed in a lower vertical portion of the rib.

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Номер записи: 18
25-07-2013 дата публикации

Anisotropic vibration isolation mounting assembly

Номер: US20130186105A1
Автор: Alan Margolis, Eric Bridges, Walter Lee Meacham
Принадлежит: Honeywell International Inc

An anisotropic vibration isolation mounting assembly includes at least two three-parameter vibration isolators each having a first end configured for attachment to a rotating member assembly or a rotating member assembly housing and each having a second, opposing end configured for attachment to the rotating member assembly housing where the first end is configured for attachment to the rotating member assembly or to a system interface member where the first member is configured for attachment to the rotating member assembly housing. The at least two three-parameter vibration isolators are tuned anisotropically to minimize the transmission of vibrations during operation of the rotating machine.

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Номер записи: 19
15-08-2013 дата публикации

Planetary-Type Auxiliary Bearing

Номер: US20130209018A1
Автор: Joseph A. Tecza, William C. Maier
Принадлежит: Dresser Rand Co

An auxiliary bearing including a support structure extending at least partially around a circumference of a shaft. A first pedestal may extend in a radially-inward direction from the support structure. First and second beams may extend from opposite sides of the first pedestal in a plane perpendicular to an axis of the shaft. First and second rollers may be operatively coupled to the first and second beams, and the first and second rollers may be configured to engage the shaft.

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Номер записи: 20
03-10-2013 дата публикации

Bearing unit for a turbocharger

Номер: US20130259416A1
Автор: Heiko Schmidt
Принадлежит: Scheaffler Tech AG and Co KG

A bearing unit for a turbocharger, including a bearing housing which extends in an axial direction, a bearing cartridge, situated within the bearing housing, having an outer bearing ring, and a securing element, situated on the bearing housing, for the twist-free positioning of the outer bearing ring within the bearing housing. The sum of the forces acting on the outer bearing ring is essentially zero. A bearing unit of this type prevents twisting of the outer bearing ring without reducing the vibration-damping effect of the quenching oil film.

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Номер записи: 21
17-10-2013 дата публикации

TURBOFAN AS TURBINE ENGINE

Номер: US20130272871A1
Автор: Townsend James Martin, UDALL Kenneth Franklin, WEBSTER JOHN RICHARD
Принадлежит:

In a turbofan gas turbine engine, a fan shaft is rotatably mounted and radially supported by a bearing in a bearing support structure-supported from a fixed engine structure by radially frangible bolts and radially extending spokes. The radially inner ends of the radially extending spokes are mounted on a common member that engages the bearing support structure. The radially outer ends of the radially extending spokes are mounted on fixed structure of the engine located radially outwardly of the bearing support structure. The radially extending spokes are held in tension and include a super elastic material to exert a radially inward restoring force on the bearing support structure, subsequent to any radial excursion of at least part of the fan shaft relative to an engine rotational axis (X) following any fracture of the frangible bolts. 1. A turbofan gas turbine engine comprising a fan mounted on a fan shaft , the fan shaft being normally coaxial with an engine rotational axis , the fan shaft being rotatably mounted and radially supported by a bearing in a bearing support structure , the bearing support structure being supported from a fixed structure of the engine by at least one member , a first end of the at least one member engaging the bearing support structure and a second end of the member being mounted on the fixed structure , the at least one member comprising a super elastic material , the at least one member exerting a radially inward restoring force on the bearing support structure , and hence the fan shaft , subsequent to a radial excursion of at least part of the fan shaft relative to the rotational axis of the engine.2. A turbofan gas turbine engine as claimed in wherein the at least one member further comprises at least one generally radially extending member claim 1 , a radially inner end of the at least one radially extending member being mounted on a common member claim 1 , the common member engaging the bearing support structure claim 1 , the ...

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Номер записи: 22
31-10-2013 дата публикации

Bearing apparatus and methods

Номер: US20130284459A1
Автор: Preston WEINTRAUB, W. Randall Slocum
Принадлежит: Canrig Drilling Technology Ltd, Canring Drilling Technology Ltd

An apparatus including a first housing defining an opening and a bearing housing disposed in the opening so that movement of at least a portion of the bearing housing within the first housing and along a first axis is permitted, the bearing housing defining first and second bearing surfaces, the first and second bearing surfaces being spaced apart along a second axis to prevent movement of the bearing housing within the first housing and along the second axis, the second axis being perpendicular to the first axis.

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Номер записи: 23
31-10-2013 дата публикации

CENTER BEARING SUPPORT

Номер: US20130287330A1
Автор: IKEDA Masahiro
Принадлежит: NOK CORPORATION

The invention provides a center bearing support () which prevents a vibration absorbing function from being lowered on the basis of an increase of a dynamic spring constant by a resonance of an elastic body (), at the time of an input of a vibration of a propeller shaft and a vibration. An inner periphery of an outer ring () fixed to a vehicle body side is provided with an inner ring () retaining a center bearing () via the elastic body () formed as a bent shape which is convex to one side in an axial direction and made of a rubber-like elastic material, the elastic body () has flexible portions () in an inner diameter side and an outer diameter side than the bent portion () as a spring, and a resonance frequency thereof is equal to or more than 1500 Hz. 1. A center bearing support characterized in that an inner periphery of an outer ring fixed to a vehicle body side is provided with an inner ring retaining a center bearing via an elastic body formed as a bent shape which is convex to one side in an axial direction and made of a rubber-like elastic material , said elastic body has a bent portion which is intermediate in a diametrical direction as a mass , and has flexible portions in an inner diameter side and an outer diameter side than the bent portion as a spring , and a resonance frequency thereof is equal to or more than 1500 Hz.2. A center bearing support characterized in that an inner periphery of an outer ring fixed to a vehicle body side is provided with an inner ring retaining a center bearing via an elastic body formed as a bent shape which is convex to one side in an axial direction and made of a rubber-like elastic material , said elastic body is formed in such a manner that a thickness is increased little by little from a bent portion which is intermediate in a diametrical direction toward both sides in the diametrical direction , a relationship t1 Подробнее

Номер записи: 24
07-11-2013 дата публикации

EXHAUST-GAS TURBOCHARGER

Номер: US20130294948A1
Автор: Schumnig Oliver
Принадлежит: BORGWARNER INC.

An exhaust-gas turbocharger () having a compressor () which has a compressor wheel () in a compressor housing (); a turbine () which has a turbine wheel () in a turbine housing (); and a bearing housing () which holds a stationary bearing bush () for a rotor shaft () and which has, at the compressor side, a bearing housing cover (). The bearing bush () is provided with axial bearing surfaces () and is fixed in the bearing housing () in a non-positively locking fashion.

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Номер записи: 25
28-11-2013 дата публикации

Tolerance ring with grouped waves

Номер: US20130315664A1
Автор: Andrew Robert Slayne, Benjamin NIAS, Simon Alan Hughes
Принадлежит: Saint Gobain Performance Plastics Rencol Ltd

A tolerance ring is disclosed and can include a generally cylindrical body having a sidewall. The sidewall can include a first unformed section and a gap in the first unformed section. The gap can extend along an entire length of the body to establish a split in the body. The sidewall can also include a second unformed section opposite the first unformed section, a first wave bank flanking the first unformed section with the gap, and a second wave bank flanking the first unformed section with the gap. The wave banks can be equally spaced around a circumference of the body of the tolerance ring and the body of the tolerance ring can be symmetrical about a center axis that extends from a center of the tolerance ring and bisects the gap in the first unformed section.

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Номер записи: 26
19-12-2013 дата публикации

SPINDLE UNIT

Номер: US20130336603A1
Автор: Matsunaga Shigeru, Okita Toshiyuki, Tanase Ryota
Принадлежит:

A spindle unit includes: a main spindle that holds a rotary tool, and that is rotated; bearings by which the main spindle is rotatably supported; and a damper bearing by which the main spindle is rotatably supported, and that has a damping coefficient larger than damping coefficients of the bearings. The damping coefficient of the damper bearing is set to a value within a range from 10,000 to 1,000,000 N·s/m. 1. A spindle unit , comprising:a main spindle that holds a rotary tool, and that is rotated;a bearing by which the main spindle is rotatably supported; anda damper bearing by which the main spindle is rotatably supported, and that has a damping coefficient larger than a damping coefficient of the bearing;wherein the damping coefficient of the damper bearing is set to a value within a range from 10,000 to 1,000,000 N·s/m.2. The spindle unit according to claim 1 , wherein the damping coefficient of the damper bearing is set to a value within a range from 30 claim 1 ,000 to 700 claim 1 ,000 N·s/m.3. The spindle unit according to claim 2 , wherein the damping coefficient of the damper bearing is set to a value within a range from 30 claim 2 ,000 to 100 claim 2 ,000 N·s/m.4. The spindle unit according to claim 1 , wherein:the main spindle is supported by a plurality of bearings including the bearing and the damper bearing; andthe damper bearing is located closest to the rotary tool among all the bearings.5. The spindle unit according to claim 1 , wherein:in a case where the damping coefficient of the damper bearing is virtually set to the same damping coefficient as the damping coefficient of the bearing, a resonance point induced in a frequency band below 1,500 Hz is defined as a virtual low-order resonance point, and an elastic compliance at the virtual low-order resonance point is defined as a virtual elastic compliance; andthe damping coefficient of the damper bearing is set to a value within such a range that an actual elastic compliance at the virtual low- ...

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Номер записи: 27
06-03-2014 дата публикации

GAS TURBINE ENGINE AFT BEARING ARRANGEMENT

Номер: US20140060083A1
Автор: Savela Gregory M.
Принадлежит: United Technologies Corpration

An example gas turbine engine includes a turbine and first and second spools coaxial with one another. The first spool is arranged within the second spool and extends between forward and aft ends. The aft end extends axially beyond the second spool and supports the turbine. A housing is arranged downstream from the turbine. First and second bearings are mounted to the aft end of the first spool and supported by the housing portion. 1. A bearing hub for a gas turbine engine comprising:first and second hub walls integrally formed with one another to provide a unitary structure;a radial to axial translation flange arm extending outward from an apex of the unitary structure;a translation flange extending outward from said translation flange arm;a spring arm connected to the apex for connecting the bearing hub to a canted annular flange.2. The bearing hub of claim 1 , wherein the translation flange arm extends axially aftward from said apex of said unitary structure.3. The bearing hub of claim 1 , wherein the spring arm comprises at least a first flex point claim 1 , a second flex point claim 1 , and a third flex point claim 1 , and wherein a stiffness of each of said flex points is configured to determine an amount of radial vibrations translated to axial vibrations by said bearing hub.4. The bearing hub of claim 1 , wherein the first and second hub walls are inclined radially inward from an annular apex claim 1 , and a first and second bearing are respectively supported by the first and second walls opposite the apex.5. The bearing hub of claim 4 , wherein a focal node of radial vibrations of the bearing hub is the first bearing.6. The bearing hub of claim 1 , wherein said spring arm is rigidly connected to said apex.7. A gas turbine engine comprising:a fan;a compressor section fluidly connected to the fan, the compressor comprising a first compressor section and a second compressor section;a combustor fluidly connected to the compressor section; a first turbine ...

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Номер записи: 28
06-03-2014 дата публикации

CONCEPT FOR CENTERING A BEARING RING IN A HOLDING ELEMENT

Номер: US20140064651A1
Автор: Beyfuss Berthold, Friedrich Hans-Juergen, Radina Alfred, Schierling Jonas
Принадлежит:

A centering assembly () serves to center a bearing ring () in a circular opening () of a holding element (). The centering assembly () includes at least three centering elements () that are each elastically deformable in the radial direction of the bearing ring. The centering elements () are respectively disposed in recesses () defined around a circumferential edge of the circular opening. The centering elements urge the bearing ring to be centered relative to the holding element. 110.-. (canceled)11. A device for centering a bearing ring in a circular opening defined in a bearing holding element , the centering assembly including:at least three centering elements that are each elastically deformable in a radial direction, the centering elements being configured to be respectively disposed in recesses defined in and around a circumferential edge of the circular opening and being configured to center the bearing ring upon its insertion into the circular opening,wherein a resilient hook is disposed on each centering element on a side of the centering device configured to face towards the circumferential edge of the circular opening, each resilient hook being configured to latch under a radial projection extending from the circumferential edge of the holding element when the centering elements are respectively disposed in the recesses in order to captively hold the centering elements in the holding element.12. The device according to claim 11 , wherein the centering elements are each configured to be elastically deformable in the radial direction when the bearing ring is inserted into the circular opening and are collectively configured to center the bearing ring in the circular opening by using a restoring force resulting from the elastic deformation.13. The device according to claim 12 , wherein each of the centering elements has a first resilient radial projection disposed on a side of the device configured to face towards the bearing ring claim 12 , each first ...

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Номер записи: 29
13-03-2014 дата публикации

Bearing arrangement comprising a backup bearing

Номер: US20140072254A1
Автор: Hermann Golbach, Horst Masuch, Michael Pausch, Peter Siebke, Wolfgang May
Принадлежит: Schaeffler Technologies AG and Co KG

A bearing arrangement for mounting a shaft on a connection structure, the arrangement including a housing ( 1 ), a bearing which supports the shaft, and a backup bearing which includes a bearing ring that makes contact with the housing ( 1 ). According to the invention, the problem of providing a bearing arrangement which includes a backup bearing and allows the forces which arise in a loaded state to be better absorbed in the backup bearing, is solved by a slit ( 9 ) being provided in the housing ( 1 ), this slit being designed as an opening and extending substantially in a circumferential direction.

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Номер записи: 30
20-03-2014 дата публикации

Bearing device

Номер: US20140079572A1
Автор: Chiaki Saito, Takashi Iwata, Yoshitaka Waseda
Принадлежит: JTEKT Corp

A bearing device includes: an outer ring housing in a cylindrical shape which is provided in a casing and has a discharge hole in an axially central portion of the outer ring housing and a notch groove passing through an axial end surface of the outer ring housing in the radial direction; and a rolling bearing mounted on each of both axial sides of the outer ring housing and rotatably supporting a rotational shaft positioned radially inside of the outer ring housing.

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Номер записи: 31
02-01-2020 дата публикации

CENTER BEARING ASSEMBLY INCLUDING A ROTATABLE WELD COLLAR WITH A TUNED DAMPER

Номер: US20200001708A1
Автор: Willyard John
Принадлежит:

A center bearing assembly for a multi-piece propeller shaft includes a stud yoke extending along an axis A between first and second stud yoke ends to define a central stub shaft rotatable about the axis A. A rotatable weld collar is operably connected to the second stud yoke end of the central stub shaft for simultaneous rotation therewith. The rotatable weld collar includes a body extending from a first collar end disposed adjacent the central stub shaft to a second collar end to define an exterior surface. A tuned damper extends radially outwardly from the exterior surface of the rotatable weld collar for reducing noise, vibration, and/or harshness (NVH) generated during operation of the multi-piece propeller shaft. A first shaft segment is operably connected to the rotatable weld collar and a second shaft segment is operably connected to the stud yoke for transferring a rotational force therebetween. 1. A center bearing assembly for a multi-piece propeller shaft comprising:a stud yoke extending along an axis A from a first stud yoke end to a second stud yoke end to define a central stub shaft rotatable about the axis A;a rotatable weld collar operably connected to said second stud yoke end of said central stub shaft for simultaneous rotation therewith;said rotatable weld collar including a body extending from a first collar end disposed adjacent said central stub shaft to a second collar end to define an exterior surface; anda tuned damper extending radially outwardly from said exterior surface of said rotatable weld collar for reducing noise, vibration, and/or harshness (NVH) generated during operation of the multi-piece propeller shaft.2. The center bearing assembly as set forth in claim 1 , wherein said tuned damper is disposed adjacent said first collar end and in spaced relationship with said second collar end to facilitate attachment of a shaft segment to the rotatable weld collar.3. The center bearing assembly as set forth in claim 2 , wherein said ...

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Номер записи: 32
05-01-2017 дата публикации

FAN VIBRATION DAMPING STRUCTURE AND FAN WITH THE VIBRATION DAMPING STRUCTURE

Номер: US20170002837A1
Автор: SHEN Ching-Hang
Принадлежит:

A fan vibration damping structure and a fan with the vibration damping structure. The fan vibration damping structure includes a bearing cup, a first bearing, a second bearing, a third bearing, an elastic member and at least one oil seal. The bearing cup has an internal receiving space and a bearing hole in communication with each other. The first, second and third bearings and the elastic member are disposed in the receiving space. A high-viscosity-coefficient oil is filled in the receiving space. The fan vibration damping structure is applied to the fan to greatly reduce vibration of the fan in operation. 1. A fan vibration damping structure comprising a bearing cup , the bearing cup having a bearing hole and a receiving space in communication with each other , a first bearing and a second bearing being disposed in the receiving space , a third bearing , an elastic member , at least one oil seal being disposed between the first and second bearings , a high-viscosity-coefficient oil being filled between the first and second bearings.2. The fan vibration damping structure as claimed in claim 1 , wherein the first and second bearings are ball bearings claim 1 , while the third bearing is an oil-retaining bearing.3. The fan vibration damping structure as claimed in claim 1 , wherein a locating member is further disposed between the third bearing and the elastic member claim 1 , the first and second bearings being disposed at two ends of the receiving space claim 1 , the oil seal being disposed between the first and third bearings claim 1 , the locating member being disposed between the third bearing and the elastic member.4. The fan vibration damping structure as claimed in claim 3 , wherein the locating member is a retainer ring.5. The fan vibration damping structure as claimed in claim 1 , wherein a stop section radially protrudes from the bearing cup into the receiving space and one side of the first bearing abuts against the stop section.6. A fan with a fan ...

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Номер записи: 33
05-01-2017 дата публикации

SQUEEZE FILM DAMPER, BEARING UNIT, AND TURBINE

Номер: US20170002863A1
Автор: FUJIKAWA Kenichi, KAWASHITA Rimpei, NAGATA Nobuhiro, OKAMOTO Naoya, SUGISHITA Hideaki
Принадлежит:

A squeeze film damper includes a bearing housing as an inner ring disposed around a radially outer side of a bearing which rotatably supports a rotary shaft, an outer ring disposed around a radially outer side of the bearing housing, a squeeze film formed by circulating a viscous fluid through a clearance in a radial direction between the bearing housing and the outer ring, and a coupling pin which couples the bearing housing and the outer ring to each other and is deformable in response to relative displacement in the radial direction between the outer ring and the bearing housing. The coupling pin has stiffness that is higher in a vertical direction than in a horizontal direction in a cross section perpendicular to an axial direction of the rotary shaft. 1. A squeeze film damper comprising:an inner ring disposed around a radially outer side of a bearing, the bearing rotatably supporting a rotary shaft;an outer ring disposed around a radially outer side of the inner ring;a squeeze film formed by circulating a viscous fluid through a clearance in a radial direction between the inner ring and the outer ring; anda coupling member configured to couple the inner ring and the outer ring to each other, the coupling member being deformable in response to relative displacement in the radial direction between the outer ring and the inner ring,wherein the coupling member has stiffness that is higher in a load direction than in a perpendicular direction perpendicular to the load direction in a cross section perpendicular to an axial direction, orwherein the inner ring and the outer ring are arranged in contact with each other at a load direction side in a cross section perpendicular to an axial direction, orwherein further comprising a spacer disposed between the inner ring and the outer ring at a load direction side, the spacer being in contact with the inner ring and the outer ring.2. The squeeze film damper according to claim 1 , whereinwhen the coupling member has ...

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Номер записи: 34
05-01-2017 дата публикации

BEARING ARRANGEMENT AND METHOD

Номер: US20170003196A1
Автор: FLETCHER Paul, GALLIMORE Stephen, MAGUIRE Alan Robert, WEBSTER JOHN RICHARD
Принадлежит: ROLLS-ROYCE PLC

A method of determining the axial load on load-sharing thrust bearings including: providing first and second thrust bearings, each including an inner race and an outer race supported by at least one resilient element; applying a test axial load to each of the first and second thrust bearings to elastically deform the at least one resilient element so as to axially displace the outer race; determining the test axial displacement of each outer race to obtain calibration data comprising values of axial load versus axial displacement; applying an in-service axial load to the first and second thrust bearings to elastically deform the resilient elements so as to axially displace the respective outer races; measuring the in-service axial displacement of each outer race; and based on the measured in-service axial displacements, inferring from the calibration data the values of the in-service axial loads on the first and second thrust bearings. 1. A method of determining the axial load on load-sharing thrust bearings , comprising:providing first and second thrust bearings, each including an inner race and an outer race which is supported by at least one resilient element;applying a test axial load to each of the first and second thrust bearings, to elastically deform the at least one resilient element so as to axially displace the outer race;determining the test axial displacement of each outer race in order to obtain calibration data comprising values of axial load versus axial displacement;applying an in-service axial load to the first and second thrust bearings to elastically deform the resilient elements so as to axially displace the respective outer races;measuring the in-service axial displacement of each outer race; andbased on the measured in-service axial displacements, inferring from the calibration data the values of the in-service axial loads on the first and second thrust bearings.2. The method according to claim 1 , wherein applying a test axial load to each of ...

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Номер записи: 35
04-01-2018 дата публикации

BEARING ASSEMBLY AND EXHAUST GAS TURBOCHARGER

Номер: US20180003223A1
Автор: Schmidt Heiko
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

The invention relates to a bearing assembly for an exhaust gas turbocharger for rotatably supporting a rotor shaft on a bearing housing, having at least one bearing outer ring of a radial bearing, which at least one bearing outer ring is placed in a bearing bore of the bearing housing and consists of at least one part, and at least one securing element, which consists of at least one part and by which the bearing outer ring is axially fastened in relation to the bearing housing. In order to simplify the assembly of a corresponding bearing assembly and to reduce the production costs thereof, at least one circumferential groove, according to the invention, is arranged on an outer lateral surface of a compressor-side end section of the bearing outer ring, in which at least one groove the securing element engages, and the securing element is arranged outside of the bearing bore on the compressor side and is supported at least indirectly on a compressor-side end of the bearing housing. 1. A bearing arrangement for an exhaust gas turbocharger for rotating support of a rotor on a bearing housing , comprising at least one bearing outer ring of a radial bearing , said at least one outer bearing ring being constructed in two parts and placed in a bearing hole of the bearing housing , at least one securing element constructed at least in one part that fixes the bearing outer ring axially relative to the bearing housing , at least one groove arranged on an outer lateral surface of a compressor-side end section of the bearing outer ring in which the securing element engages , wherein the securing element is arranged on a compressor side outside of the bearing hole and is supported at least indirectly on a compressor-side end of the bearing housing , the two parts of the bearing outer ring comprise a compressor-side outer ring part and a turbine-side outer ring part , the compressor-side end section of the bearing outer ring is arranged on the compressor-side outer ring part , ...

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Номер записи: 36
04-01-2018 дата публикации

Bearing Compression Strap

Номер: US20180003239A1
Автор: Crowther Ashley, Glinsky Chad Phillip, McNichols Colin
Принадлежит:

A tensioning arrangement for a bearing ring is disclosed, which introduces compressive force towards a rotational centre of the bearing ring, to prevent bearing ring distorting as a shaft supported by the bearing turns. The tensioner arrangement comprises a strap and a tensioner. The strap has a connector at each end, and tensioner has a means for connecting to the connectors. The tensioner also has a means for applying tension to the strap. In use, the strap is arranged around the bearing ring and a circumferential length of the strap in contact with the bearing ring is reduced, thereby applying compressive force to the bearing ring. 1. A tensioning arrangement for a bearing ring comprising:a strap, in which said strap comprises a first connector at a first end and a second connector at a second end; means for connecting to said connectors; and', 'means for applying tension to the strap;, 'a tensioner, in which said tensioner compriseswherein, in use, the strap is connected to the tensioner and arranged around the bearing ring and actuation of the tensioner reduces a circumferential length of the strap in contact with the bearing ring and increases tension in the strap, thereby applying compressive force to a rotational centre of the bearing ring sufficient to prevent the bearing ring from distorting.2. The tensioning arrangement of in which said first connector comprises a stud.3. The tensioning arrangement of in which said second connector comprises a threaded stud.4. The tensioning arrangement of in which said first connector comprises a loop.5. The tensioning arrangement of in which said loop is formed from the strap.6. The tensioning arrangement of in which said one of said connectors is a direct connection to said tensioner.7. The tensioning arrangement of in which said means for connecting comprises a channel for receiving one end of said strap.8. The tensioning arrangement of in which said channel comprises a slot.9. The tensioning arrangement of in which ...

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Номер записи: 37
07-01-2021 дата публикации

Journal Bearing Housing and Shaft for a Wind Turbine Drivetrain Having Corresponding Deformation

Номер: US20210003117A1
Автор: Nies Jacob Johannes
Принадлежит:

A bearing assembly for a drivetrain of a wind turbine includes at least one shaft having a circumferential outer surface. The bearing assembly also includes a bearing housing arranged circumferentially around the circumferential outer surface of the shaft. The bearing housing having at least deformation such that the bearing housing and the shaft have a corresponding deformation around a toroidal axis such that interfacing surfaces of the bearing housing and the shaft flex together and remain parallel during operation of the drivetrain, thereby distributing operational loads of the drivetrain. The bearing assembly further includes a bearing housed at least partially within the bearing housing and engaging the circumferential outer surface of the shaft. 1. A bearing assembly for a drivetrain of a wind turbine , the bearing assembly comprising:a shaft comprising a circumferential outer surface;a bearing housing arranged circumferentially around the circumferential outer surface of the shaft, the bearing housing comprising at least deformation such that the bearing housing and the shaft have a corresponding deformation around a toroidal axis such that interfacing surfaces of the bearing housing and the shaft flex together and remain parallel during operation of the drivetrain, thereby distributing operational loads of the drivetrain; and,a bearing housed at least partially within the bearing housing, the bearing engaging the circumferential outer surface of the shaft.2. The bearing assembly of claim 1 , wherein the at least deformation is caused by a flexible hinge claim 1 , the bearing housing further comprising a base portion and a bearing contacting portion adjacent to the bearing claim 1 , the at least one flexible hinge allowing the bearing housing to tilt.3. The bearing assembly of claim 2 , wherein the bearing housing comprises symmetrical opposing flexible hinges.4. The bearing assembly of claim 2 , further comprising a cavity on the circumferential outer ...

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Номер записи: 38
03-01-2019 дата публикации

Adjusting device for a turbocharger, and turbocharger

Номер: US20190003376A1
Автор: Jens Zweydinger, Ralf Schawer
Принадлежит: IHI Charging Systems International GmbH

The invention relates to a control device for a turbocharger, comprising an exhaust gas conducting section through which fluid can flow and which includes a bypass duct for bypassing a turbine wheel that is rotatably arranged in the exhaust gas conducting section, and comprising an adjusting arm (3) for accommodating a valve element (2) provided for opening or blocking a flow cross-section of the bypass duct; the adjusting arm (3) is movably accommodated in the exhaust gas conducting section; furthermore, a flexible element (14) is provided at least for securing the valve element (2) in place on the adjusting arm (3). According to the invention, the flexible element (14) is designed so as to be radially slidable in order to reduce adjustment forces.

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Номер записи: 39
03-01-2019 дата публикации

FOIL BEARING

Номер: US20190003524A1
Автор: Braun Wolfgang, WIRTH Philipp
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A foil bearing for supporting a shaft includes a sleeve-type bearing housing with three foil arrangements distributed around the inner circumference of the baring housing. Each foil arrangement covers a circumferential segment of the bearing housing. Each foil arrangement has a corrugated foil lying against an inner wall of the housing, and a top foil covering the corrugated foil. Each of the corrugated foil and the top foil has respective end edges. Each of the end edges are supported within the inner wall of the housing in a sliding manner. In particular, insertion grooves are formed in the inner surface of the housing which extend obliquely into the housing wall outwardly. The insertion grooves receive the end edges of the corrugated foil and the top foil. 1. A foil bearing for supporting a shaft , said bearing comprising: covering a circumferential segment of the bearing housing,', 'having a corrugated foil lying against an inner surface of the bearing housing; and', 'having a top foil covering said corrugated foil and having end edges delimiting the top foil in a circumferential direction, the end edges supported by the inner surface of the housing,, 'a sleeve-type bearing housing with three foil arrangements distributed around an inner circumference of the bearing housing, each foil arrangementwherein insertion grooves are formed in the inner surface of the housing, the grooves extending along surface lines and projecting obliquely outwardly into the housing, each of said grooves holding one of the end edges and one end edge of the associated corrugated foil, and wherein with a circular cross-sectional inner contour of the bearing housing the corrugated foils have corrugated heights that decrease starting from a respective central region in relation to the circumferential direction of the bearing housing towards their respective end edges.2. A foil bearing according to claim 1 , wherein the insertion grooves hold the end edges of the top foil and the end edges ...

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Номер записи: 40
08-01-2015 дата публикации

ROLLING BEARING DEVICE, IN PARTICULAR FOR A STEERING COLUMN

Номер: US20150010259A1
Автор: Bussit Sylvain, Jansen Daniel, Jullien Tommy, Lepine Thomas, Montboeuf Bruno
Принадлежит:

A rolling bearing device for a steering column having an outer ring, an inner ring, at least one row of rolling elements arranged between the rings, a sleeve mounted in the bore of the inner ring and coming to bear axially against the ring is provided. The sleeve provides a bore designed to come into radial contact with a shaft, and a member for the axial retention of the sleeve including retention means designed to engage with the shaft. The sleeve having at least one elastic body at least partially delimiting the bore. The axial retention member mounted to bear axially directly against the sleeve on the opposite side from the inner ring. 1. A rolling bearing device for a steering column , comprising:an outer ring,an inner ring,at least one row of rolling elements arranged between the rings,a sleeve mounted in the bore of the inner ring coming to bear axially against the ring, the sleeve having a bore designed to come into radial contact with a shaft, anda member for the axial retention of the sleeve providing retention means designed to engage with the shaft, and whereinthe sleeve includes at least one elastic body at least partially delimiting the bore, the axial retention member being mounted to bear axially directly against the sleeve on the opposite side from the inner ring.2. The device according to claim 1 , wherein the sleeve includes a bearing collar having a first bearing surface claim 1 , against which the inner ring is mounted claim 1 , and a second opposite bearing surface claim 1 , against which the axial retention member is mounted.3. The device according to claim 2 , wherein the elastic body of the sleeve delimits at least the first bearing surface of the bearing collar.4. The device according to claim 1 , wherein the sleeve provides a rigid thrust washer mounted axially against the elastic body of the sleeve claim 1 , the axial retention member being mounted to bear axially against the washer.5. The device according to claim 4 , wherein the thrust ...

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Номер записи: 41
08-01-2015 дата публикации

EXHAUST GAS TURBOCHARGER

Номер: US20150010387A1
Автор: Daimer Guido
Принадлежит:

An exhaust gas turbocharger may include a rotor mounted in a bearing housing via a rolling bearing. The rolling bearing may include an outer shell, an inner shell and rolling bodies running therebetween. At least one annular and vibrational noise absorbing diaphragm spring element may be arranged between the outer shell of the rolling bearing and the bearing housing. The diaphragm spring element may mount the rotor in radial direction and axial direction in a vibration-insulating manner with respect to the bearing housing. 1. An exhaust gas turbocharger , comprising: a rotor mounted in a bearing housing via a rolling bearing , wherein the rolling bearing includes an outer shell , an inner shell and rolling bodies running therebetween , andat least one annular and vibrational noise absorbing diaphragm spring element arranged between the outer shell of the rolling bearing and the bearing housing, the diaphragm spring element mounting the rotor in radial direction and axial direction in a vibration-insulating manner with respect to the bearing housing.2. The exhaust gas turbocharger according to claim 1 , wherein the diaphragm spring element is formed of metal.3. The exhaust gas turbocharger according to claim 1 , wherein the diaphragm spring element includes an outer ring and an inner ring connected therewith via ribs.4. The exhaust gas turbocharger according to claim 3 , wherein the ribs are arranged at an angle relative to the radial direction.5. The exhaust gas turbocharger according to claim 3 ,wherein the ribs connect to the inner ring at a first connection point radially in the direction of the outer ring,the ribs connect to the outer ring at a second connection point radially in the direction of the inner ring, andthe first and the second connection points are not located on a common radial ray.6. The exhaust gas turbocharger according to claim 1 , wherein the diaphragm spring element is formed as a punched part.7. The exhaust gas turbocharger according to ...

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Номер записи: 42
12-01-2017 дата публикации

TURBO MACHINE

Номер: US20170009602A1
Автор: HASEGAWA Hiroshi, HIWATA AKIRA, KOUDA KAZUYUKI, Ogata Takeshi, SHOYAMA TADAYOSHI, Taguchi Hidetoshi
Принадлежит:

A turbo machine of the present disclosure includes a cylindrical bearing housing, a rotation shaft, a bearing, a bearing holder, and an end elastic body. The rotation shaft is located in the bearing housing. The bearing rotatably supports the rotation shaft at least in a radial direction of the rotation shaft. The bearing holder faces one end of the bearing and is fixed to the bearing housing. The end elastic body is disposed between the one end of the bearing and the bearing holder in the axial direction of the bearing and is in contact with the bearing and the bearing holder. The end elastic body is formed of a material having a lower modulus of elasticity than a material forming the bearing holder. 1. A turbo machine comprising:a cylindrical bearing housing;a rotation shaft that is located in the bearing housing;a bearing that is disposed between an inner surface of the bearing housing and an outer surface of the rotation shaft, that rotatably supports the rotation shaft at least in a radial direction of the rotation shaft, and that has one end in an axial direction of the bearing, the one end being located in the bearing housing;a bearing holder that is fixed to one end of the bearing housing in the axial direction of the bearing and that faces the one end of the bearing; andan end elastic body that is disposed between the one end of the bearing and the bearing holder in the axial direction of the bearing, that is in contact with the bearing and the bearing holder, and that is formed of a material having a lower modulus of elasticity than a material forming the bearing holder.2. The turbo machine according to claim 1 , wherein at least one of the one end of the bearing and a surface of the holder that is in contact with the end elastic body has a front recess that houses a portion of the end elastic body.3. The turbo machine according to claim 1 , further comprising at least one side elastic body that is disposed in a ring-shaped space formed between the inner ...

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Номер записи: 43
14-01-2016 дата публикации

RADIAL FOIL BEARING

Номер: US20160010682A1
Автор: Omori Naomichi
Принадлежит: IHI CORPORATION

The radial foil bearing includes: a top foil disposed facing a rotary shaft; an intermediate foil disposed outside of the top foil in the radial direction thereof; a back foil disposed outside of the intermediate foil in the radial direction; and a cylindrical bearing housing accommodating the top foil, the intermediate foil and the back foil. Engagement recesses are formed on both side surfaces of the bearing housing so as to be opposite to each other. The intermediate foil includes intermediate foil pieces disposed in the circumferential direction of the bearing housing. An engagement-projecting piece engaging with the engagement recess is formed in each intermediate foil piece. 1. A radial foil bearing used for supporting a rotary shaft so as to encircle the rotary shaft , the radial foil bearing comprising:a cylindrical top foil disposed so as to face the rotary shaft;an intermediate foil disposed outside of the top foil in a radial direction thereof;a back foil disposed outside of the intermediate foil in the radial direction; anda cylindrical bearing housing accommodating the top foil, the intermediate foil and the back foil,wherein a plurality of pairs of engagement recesses are formed in the bearing housing, each pair of engagement recesses are positioned on both side surfaces of the bearing housing so as to be opposite to each other, each engagement recess extends from an inner circumferential surface toward an outer circumferential surface of the bearing housing, and the plurality of pairs of engagement recesses are disposed in a circumferential direction of the bearing housing,wherein the intermediate foil includes intermediate foil pieces disposed in the circumferential direction of the bearing housing, andwherein an engagement-projecting piece engaging with the engagement recess is formed in each intermediate foil piece.2. The radial foil bearing according to claim 1 , wherein the back foil includes back foil pieces disposed in the circumferential ...

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Номер записи: 44
14-01-2016 дата публикации

BEARING

Номер: US20160010686A1
Автор: Cordts Detlef
Принадлежит:

A bearing with a core and a sheath which surrounds the core, wherein the core is supported against the sheath by at least one elastomer or a plurality of elastomers, wherein at least two functional chambers which contain a working fluid are formed between the core () and the sheath, and wherein the functional chambers are bounded at least partially by the elastomer or elastomers, characterized, with respect to the problem of configuring a bearing in such a way that a drop in rigidity of the bearing is as small as possible at low temperatures, in that at least one equalizing chamber is provided for an equalizing fluid, from which the equalizing fluid can be diverted into the functional chambers, wherein the equalizing fluid in the equalizing chamber is separated from a gas-filled space or a plurality of gas-filled spaces by a movable or elastic separating element. 1. A bearing , comprising:a core;a sheath surrounding the core;at least two functional chambers, each comprising an operating fluid, each chamber being disposed between the core and the sheath; andan equalization chamber, configured for an equalization fluid,wherein the core is supported in relation to the sheath, by a support comprising an elastomer,wherein the functional chambers are at least partially delimited by the support,wherein the equalization fluid can be introduced from the equalization chamber into the functional chambers, andwherein the equalization fluid in the equalization chamber is separated, by a movable separation element or elastic separation element from at least one gas-filled space.2. The bearing of claim 1 , wherein the equalization chamber is configured to be connected claim 1 , in a fluid-conducting manner claim 1 , to a connection duct of the functional chambers via a duct and a check valve.3. The bearing of claim 2 , wherein the equalization chamber is configured to be connected claim 2 , in a fluid-conducting manner claim 2 , manner to the connection duct via a thin duct.4. The ...

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Номер записи: 45
14-01-2021 дата публикации

BEARING AND TURBOCHARGER

Номер: US20210010482A1
Автор: CHOI Eunseok, Hashimoto Koji, IIZUKA Kiyokazu, TANIGAKI Michihiko, UNEURA Yutaka
Принадлежит: IHI CORPORATION

A full-floating bearing includes: an outer peripheral groove having a groove width larger than a value of 0.69, which is a value obtained by subtracting a chamfer width as a width of a chamfered portions in a center axis direction and the groove width as a width of the groove in the center axis direction from a total width being a width of a main body in the center axis direction and dividing a net width by a total width. 1. A bearing , comprising:a main body having an annular shape;chamfered portions formed at both ends of an outer peripheral surface of the main body in a center axis direction; andan outer peripheral groove which is a groove extending in a circumferential direction of the outer peripheral surface of the main body, the outer peripheral groove having a groove width larger than a value of 0.69, which is a value obtained by subtracting a chamfer width as a width of the chamfered portions in the center axis direction and the groove width as a width of the groove in the center axis direction from a total width being a width of the main body in the center axis direction and dividing the net width by the total width.2. The bearing according to claim 1 , wherein claim 1 , in the outer peripheral groove claim 1 , a value obtained by dividing a depth of the main body in a radial direction by the groove width is equal to or larger than 0.083.3. The bearing according to claim 1 , wherein claim 1 , in the outer peripheral groove claim 1 , a value obtained by dividing the net width by the total width is equal to or smaller than 0.75.4. The bearing according to claim 2 , wherein claim 2 , in the outer peripheral groove claim 2 , a value obtained by dividing the net width by the total width is equal to or smaller than 0.75.5. The bearing according to claim 1 , wherein an inner peripheral groove extending in a circumferential direction is formed in an inner peripheral surface of the main body.6. The bearing according to claim 2 , wherein an inner peripheral groove ...

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Номер записи: 46
14-01-2021 дата публикации

RADIAL FOIL BEARING

Номер: US20210010531A1
Автор: Omori Naomichi
Принадлежит: IHI CORPORATION

A radial foil bearing includes a bearing housing that has an insertion hole into which a shaft is inserted, a back foil that is disposed on an inner peripheral surface of the insertion hole, a lop foil that is supported by the back foil, and a protrusion portion that protrudes toward an inner side in a radial direction of the insertion hole from the inner peripheral surface of the insertion hole and is configured to allow supporting of the top foil. 1. A radial foil bearing comprising:a bearing housing that has an insertion hole into which a shaft is inserted;a back foil that is disposed on an inner peripheral surface of the insertion hole;a top foil that is supported by the back foil; anda protrusion portion that protrudes toward an inner side in a radial direction of the insertion hole front the inner peripheral surface of the insertion hole and is configured to allow supporting of the top foil.2. The radial foil bearing according to claim 1 ,wherein the back foil includes a hole portion to which the protrusion portion is fitted.3. The radial foil hearing according to claim 1 ,wherein the protrusion portion includes a top wall portion at a position in an axial direction within a range of ±5% from a middle position in the axial direction of the insertion hole.4. The radial foil hearing according to claim 1 ,wherein the protrusion portion is formed in a ring shape along a circumferential direction of the inner peripheral surface of the insertion hole.5. The radial foil bearing according to claim 1 ,wherein a plurality of the protrusion portions are formed with a gap along a circumferential direction of the inner peripheral surface of the insertion hole.6. The radial foil bearing according to claim 1 ,wherein the back foil includes a first back foil and a second back foil, which are separated in an axial direction of the insertion hole, andthe first back foil and the second back foil face each other in the axial direction with the protrusion portion interposed ...

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Номер записи: 47
14-01-2021 дата публикации

STEERING COLUMN TURNING TORQUE ADJUSTMENT DEVICE

Номер: US20210010535A1
Автор: Caverly Jacob A., McComb Brandon M., Messing Matthew L., Schneider Douglas M., Smith Robert J., Spencer Clinton D.
Принадлежит:

A steering column assembly includes a steering column housing. The steering column assembly also includes a lower shaft disposed within the steering column housing and axially adjustable. The steering column assembly further includes a torque adjustment assembly operatively connected to the lower shaft to increase or decrease a steering shaft turning torque. 1. A steering column assembly comprising:a steering column housing;a lower shaft disposed within the steering column housing and axially adjustable; anda torque adjustment assembly operatively connected to the lower shaft to increase or decrease a steering shaft turning torque.2. The steering column assembly of claim 1 , wherein the torque adjustment assembly is integrated with a lower bearing sleeve.3. The steering column assembly of claim 1 , wherein the torque adjustment assembly comprises a bearing assembly claim 1 , a retaining member claim 1 , and a spring disposed between the bearing assembly and the retaining member.4. The steering column assembly of claim 3 , wherein the bearing assembly comprises an outer race claim 3 , an inner race claim 3 , and at least one bearing disposed within a space defined by the outer race and the inner race.5. The steering column assembly of claim 4 , wherein the inner race of the bearing assembly is in contact with a recess of the lower bearing sleeve claim 4 , the recess being on an outer surface of the lower bearing sleeve claim 4 , the recess defined by a receiving portion and an outer retaining lip of the lower bearing sleeve.6. The steering column assembly of claim 5 , wherein the spring has a first end and a second end claim 5 , the first end in frictional contact with the receiving portion of the lower bearing sleeve claim 5 , the second end opposite the first end and in contact with the retaining member.7. The steering column assembly of claim 3 , wherein the spring is held in place relative to the rest of the torque adjustment assembly by a spring retaining lip of ...

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Номер записи: 48
12-01-2017 дата публикации

DAMPED BEARING OF A ROTOR SHAFT

Номер: US20170012570A1
Автор: Bauer Christian
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

The invention relates to an arrangement for the damped bearing of a rotor shaft () of an electric machine. The invention also relates to an electric machine comprising a rotor shaft () and at least one such arrangement. The invention further relates to a method for the damped bearing of a rotor shaft () of such an electric machine. In order to provide an alternative for the damped bearing of a rotor shaft (), it is proposed that the arrangement has a bearing unit (), which can be arranged between the rotor shaft () and a housing () of the electric machine, and a damping element (), which can be arranged between the bearing unit () and the rotor shaft () or between the bearing unit () and the housing (), wherein the damping element () comprises a mesh of metal wire (). 114.-. (canceled)15. An arrangement for a damped bearing of a rotor shaft of an electric machine , said arrangement comprising:a bearing unit arranged between the rotor shaft and a housing of the electric machine; anda damping element comprising a mesh of metal wire, said damping element being arranged in one of two ways, a first way in which the damping element is arranged between the bearing unit and the rotor shaft, a second way in which the damping element is arranged between the bearing unit and the housing.16. The arrangement of claim 15 , wherein the bearing unit is configured as a rolling bearing or as a plain bearing.17. The arrangement of claim 15 , wherein the damping element comprises an inner ring and an outer ring claim 15 , said mesh of metal wire being arranged between the inner ring and the outer ring.18. The arrangement of claim 17 , wherein at least one of the inner and outer rings has an L-shaped cross section.19. The arrangement of claim 17 , wherein at least one of the inner and outer rings has a wedge-shaped cross section.20. The arrangement of claim 15 , wherein the damping element has a spring constant claim 15 , a damping constant and a natural frequency claim 15 , said ...

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Номер записи: 49
15-01-2015 дата публикации

BEARING DEVICE FOR CONSTRUCTION MACHINE

Номер: US20150016761A1
Автор: Akita Hideki, Gokita Osamu, Sakurai Shigeyuki, Satou Akiko
Принадлежит:

The invention pertains to a bearing device used for a connecting part of a construction machine. The bearing device has: a boom having a boss part; an arm having left and right brackets that sandwich the boss part from the left and right sides thereof; a bush that is retained by an inner peripheral side of the boss part; a sealing that is disposed between the bush and the left and right brackets and that prevents a lubricant from leaking out of the bush; a thrust plate inserted between the left and right brackets and the boss part; and a coupling pin that penetrates and is inserted through the left and right brackets and the bush. The thrust plate has a partially cut out annular shape and an angle of a cut-out portion in the circumferential direction is less than 180° at an inner peripheral portion. 1. A bearing device for use in a connecting part of a construction machine including: a lower travelling body , an upper turning body mounted on the lower travelling body , and a front working mechanism mounted on the upper turning body , the bearing device comprising:a first member having a boss part;a second member having left and right brackets sandwiching the boss part on opposite lateral sides thereof;a bush retained on an inner periphery of the boss part;sealing means interposed between the bush and each of the left and right brackets and preventing a lubricant medium from leaking from the bush;a thrust plate inserted between each of the left and right brackets and the boss part; anda coupling pin inserted through the left and right brackets and the boss part,wherein the thrust plate is formed by cutting out a part of an annular body and is configured to be insertably assembled on the coupling pin after insertion of the coupling pin through the left and right brackets, andwherein a circumferential angle of the cut-out portion of the thrust plate as determined on the inside circumference thereof is equal to or less than 180°.2. The bearing device for the ...

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Номер записи: 50
15-01-2015 дата публикации

SEGMENTED VISCOELASTIC BUSHING FOR ROTATING ELECTRICAL MACHINES BEARING

Номер: US20150016763A1
Автор: Stoinski Valmir Luis, Weis Rui Paulo
Принадлежит: WEG EQUIPAMENTOS ELETRICOS S.A. - MOTORES

The present invention discloses a device designed with the purpose of absorbing radial and axial expansion variations during the rotating electrical machine operation. The bushing is fitted between the bearing and the wheel hub in order to absorb impacts, but allowing in a controlled level the axial and radial movement of the bearing resulting from the existing clearance between the bearing and the outer ring of the bearing. 11787. Segmented Viscoelastic Bushing for Rotating Electrical Machines Bearing , to be used with the purpose of absorbing radial and axial expansion variations plus the mistakes generated by the high-pressure casting processes , during the electrical machine operation , comprising a body () in annular shape , delimiting an outer ring () , presenting at least three segments () linked to the outer perimeter of ().22342323746. The Segmented Viscoelastic Bushing for Rotating Electrical Machines Bearing according to claim 1 , wherein comprises an inner groove () claim 1 , an outer groove () and an inner ring () delimited by an inner groove () and outer groove () claim 1 , in order to link () and () to the ring (); said inner ring () presenting cuttings in its perimeter ().38579. The Segmented Viscoelastic Bushing for Rotating Electrical Machines Bearing according to claim 1 , wherein each segment () comprises a lower end () linked to the outer ring () and an upper end () in a trapezoidal rectangular shape or a rounding radius.4131615131412. The Segmented Viscoelastic Bushing for Rotating Electrical Machines Bearing according to claim 1 , wherein in another embodiment comprises segments () joined to a cross-section ring () in a T shape through rectangular trapezoids grooved recesses (); wherein each segment () presents a beveled upper end () and a lower end () with rounded corners.520191718. The Segmented Viscoelastic Bushing for Rotating Electrical Machines Bearing according to claim 1 , wherein in another embodiment the segments () with curved lower ...

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Номер записи: 51
15-01-2015 дата публикации

COMPOSITE SLIDING BEARING AND WIND POWER GENERATING DEVICE USING THE SAME BEARING

Номер: US20150017000A1
Автор: HOSHI Masahiro, SATO Shoji
Принадлежит: FUJI ELECTRIC CO., LTD.

A composite sliding bearing is disclosed. The composite sliding bearing has an inner ring, formed of split rings halved by a center in an axial direction, which has V-section inclined surfaces formed on the outer diameter surfaces of the split rings, bearing pads disposed separately on the inclined surfaces of the split rings along the outer diameter surface of the inner ring, and an outer ring on the inner diameter surface of which is formed a V-section umbrella-shaped inclined surface corresponding to the outer diameter surface of the inner ring. A radial load and axial load applied to the bearing are supported by sliding the inner diameter surface of the outer ring on the sliding surfaces of the bearing pads in a condition in which the bearing pads are fluid lubricated. 1. A composite sliding bearing , comprising:an inner ring, including split structure ring bodies halved by a center in an axial direction, the inner ring having V-section inclined surfaces formed on the outer diameter surfaces of the ring bodies;bearing pads disposed separately on the inclined surfaces of split structure ring bodies along the outer diameter surface of the inner ring; andan outer ring disposed on the inner diameter surface, the outer ring having a V-section umbrella-shaped inclined surface corresponding to the outer diameter surface of the inner ring;wherein a radial load and an axial load applied to the bearing are supported by sliding the inner diameter surface of the outer ring on the sliding surfaces of the bearing pads when the bearing pads are fluid-lubricated.2. The composite sliding bearing according to claim 1 , wherein the bearing pads are tilting pads that enable a tilting movement in at least a direction of rotation of the bearing.3. The composite sliding bearing according to claim 1 , wherein a white metal or a resin overlay having a low frictional coefficient is applied to the sliding surfaces of the bearing pads.4. The composite sliding bearing according to claim 1 , ...

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Номер записи: 52
03-02-2022 дата публикации

SYSTEM FOR THE AXIAL RETENTION OF A RING OF A ROLLING ELEMENT BEARING

Номер: US20220034237A1
Автор: Bensalah Boucif, Gendraud Alain Dominique, Lima Christophe, MARTIN MATOS Alberto, Quesnel Valentin Olivier Jean-Jacques
Принадлежит: SAFRAN AIRCRAFT ENGINES

A system for the axial retention of a holding ring for a bearing for guiding in rotation a rotary shaft of a turbomachine is disclosed. The system includes an annular bearing support and a bearing holding ring that is borne by the annular bearing support. The bearing holder ring includes an upstream ring configured to be brought into contact with the bearing support and a downstream ring that is elastically deformable. The bearing support has a first axial retention element, and the bearing holding ring has a second axial retention element. The first and second axial retention elements are configured to cooperate with one another to axially retain the bearing holding ring in the event of damage to the downstream ring. 1. A system for the axial retention of a holding ring for a bearing for guiding in rotation a rotary shaft of a turbomachine extending along a longitudinal axis , the retention system comprising:an annular bearing support configured to be secured to a fixed part of the turbomachine, anda bearing holding ring carried by the annular bearing support, the bearing holding ring extending along the longitudinal axis and comprising an upstream ring configured to be brought into contact with the bearing support and a downstream ring that is elastically deformable and intended to be connected to the fixed part,wherein the bearing support comprises a first axial retention element, and the bearing holding ring comprises a second axial retention element, the first and second axial retention elements being configured to cooperate with each other to axially retain the bearing holding ring when the downstream ring is damaged, wherein the first and second axial retention elements each has at least one annular tooth extending along a radial axis perpendicular to the longitudinal axis to cooperate with each other axially and to form a snap connection.2. (canceled)3. The system for the axial retention according to claim 1 , wherein each of the annular teeth of the first ...

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Номер записи: 53
17-01-2019 дата публикации

Inboard Bearing Assemblies for Proprotor Systems

Номер: US20190016454A1
Автор: Baldwin Tyler Wayne, Cravener Kyle Thomas, Kizhakkepat Amarjit, Paulson Jared Mark, Shundo Ken
Принадлежит: Bell Helicopter Textron Inc.

A proprotor system for a tiltrotor aircraft having a helicopter flight mode and an airplane flight mode. The proprotor system includes a yoke having a plurality of blade arms with inboard pockets. A centrifugal force and shear bearing assembly is disposed in each of the inboard pockets of the yoke. Each of a plurality of proprotor blades is coupled to the yoke by one of the bearing assemblies such that each proprotor blade has a pitch change degree of freedom about a pitch change axis and a tilting degree of freedom about a focal point. Each bearing assembly includes a centrifugal force bearing coupled to the yoke, a shear bearing coupled to the yoke and an inboard beam coupled between the centrifugal force bearing and the shear bearing. Each inboard beam is coupled to a respective proprotor blade. 1. A proprotor system for a tiltrotor aircraft having a helicopter flight mode and an airplane flight mode , the proprotor system comprising:a yoke having a plurality of blade arms each having an inboard pocket;a plurality of centrifugal force and shear bearing assemblies each disposed in one of the inboard pockets of the yoke; anda plurality of proprotor blades each coupled to the yoke by one of the centrifugal force and shear bearing assemblies such that each proprotor blade has a pitch change degree of freedom about a pitch change axis and a tilting degree of freedom about a focal point.2. The proprotor system as recited in further comprising a plurality of shear bearings each disposed at an outboard end of one of the blade arms of the yoke.3. The proprotor system as recited in wherein each centrifugal force and shear bearing assembly further comprises:a centrifugal force bearing coupled to the yoke;a shear bearing coupled to the yoke; andan inboard beam coupled between the centrifugal force bearing and the shear bearing.4. The proprotor system as recited in wherein claim 3 , for each centrifugal force and shear bearing assembly claim 3 , the centrifugal force bearing ...

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Номер записи: 54
18-01-2018 дата публикации

BEARING RING

Номер: US20180017104A1
Автор: Katsaros Padelis, Wendt Volker
Принадлежит:

A rolling-element bearing assembly includes a support element and a bearing ring mounted on the support element. The bearing ring includes a substantially axial mounting surface in contact with the support element and a running surface configured to support a rolling element. The running surface has a first edge and a second edge axially spaced from the first edge and an axial width of the running surface is greater than an axial width of the mounting surface. The bearing ring includes a first cantilevered portion having a top surface, the top surface being a first end portion of the running surface, and a bottom surface facing the support element. The first cantilevered portion does not contact the support element and, extending axially from a junction of the support element and the mounting surface, a radial width of the first cantilevered portion decreases and then increases. 1. A rolling-element bearing assembly comprising:a support element, anda bearing ring mounted on the support element,the bearing ring comprising:a substantially axial mounting surface in contact with the support element, anda running surface configured to support a rolling element, the running surface having a first edge and a second edge axially spaced from the first edge,wherein the running surface has an axial width greater than an axial width of the mounting surface,wherein the bearing ring includes a first cantilevered portion having a top surface, the top surface of the first cantilevered portion comprising a first end portion of the running surface and the first cantilevered portion having a bottom surface facing the support element,wherein the first cantilevered portion does not contact the support element, andwherein, extending axially from a junction of the support element and the mounting surface, a radial width of the first cantilevered portion decreases and then increases.2. The rolling-element bearing assembly according to claim 1 , wherein the first cantilevered portion is ...

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Номер записи: 55
19-01-2017 дата публикации

DAMPING UNIT

Номер: US20170018990A1
Автор: VEREIJKEN Hans, WINKLER Wolfgang
Принадлежит:

The invention is based on a damping unit with at least one bearing element () which is provided for damping at least one longitudinal armature oscillation of an electromotor in at least one operating state and which comprises at least one hollow space () for damping the at least one longitudinal armature oscillation of the electromotor in at least one operating state and which comprises at least one first injection-molded element () and at least one second injection-molded element (). 1. A damping unit with at least one bearing element which is provided for damping at least one longitudinal armature oscillation of an electromotor in at least one operating state and which comprises at least one hollow space for damping the at least one longitudinal armature oscillation of the electromotor in at least one operating state and which comprises at least one first injection-molded element and at least one second injection-molded element wherein the at least one hollow space is arranged at least substantially in the at least one first injection-molded element or in the at least one second injection-molded element.2. The damping unit according to claim 1 , wherein the at least one hollow space is arranged at least partly along a circumferential direction of the bearing element.3. The damping unit according to claim 1 , wherein the at least one hollow space is embodied at least partly ring-shaped.4. The damping unit according to claim 1 , further comprising at least two bearing elements claim 1 , which are provided for damping at least the longitudinal armature oscillation of the electromotor in at least one operating state.5. The damping unit according to claim 1 , wherein the at least one first injection-molded element and the at least one second injection-molded element are at least partly fixedly connected to each other.6. The damping unit according to claim 1 , wherein the at least one first injection-molded element and the at least one second injection-molded element ...

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Номер записи: 56
16-01-2020 дата публикации

OIL SUPPLY SYSTEM FOR FLUID FILM DAMPER

Номер: US20200018350A1
Автор: Weiner Richard Alan
Принадлежит: UNITED TECHNOLOGIES CORPORATION

A fluid film damper may comprise a sleeve, an annular support housing surrounding the sleeve, an annular volume between the annular support housing and the sleeve, a first supply conduit in fluid communication with a first inlet to the annular volume, a second supply conduit in fluid communication with a second inlet to the annular volume, wherein the first inlet is disposed opposite the annular volume from the second inlet, and a common oil supply conduit in fluid communication with the annular volume via a check valve, wherein the common oil supply conduit supplies the fluid to the annular volume via the first supply conduit and the second supply conduit. 1. A fluid film damper , comprising:a sleeve;an annular support housing surrounding the sleeve;an annular volume between the annular support housing and the sleeve;a first supply conduit in fluid communication with a first inlet to the annular volume;a second supply conduit in fluid communication with a second inlet to the annular volume, wherein the first inlet is disposed opposite the annular volume from the second inlet; anda common oil supply conduit in fluid communication with the annular volume via a check valve, wherein the common oil supply conduit supplies the fluid to the annular volume via the first supply conduit and the second supply conduit.2. The fluid film damper of claim 1 , wherein the first inlet is disposed 180° around the annular volume from the second inlet.3. The fluid film damper of claim 1 , wherein the sleeve is mounted about a shaft being supported by a bearing.4. The fluid film damper of claim 3 , wherein the shaft rotates about a central shaft axis with respect to the sleeve.5. The fluid film damper of claim 4 , wherein the fluid film damper dampens the transverse orbital movement of a vibration excited from the shaft whereby a high pressure and low pressure wave pattern precesses orbitally within said annular volume to drive the fluid between the first inlet and the second inlet via ...

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Номер записи: 57
25-01-2018 дата публикации

MAIN SPINDLE DEVICE FOR MACHINE TOOL

Номер: US20180021904A1
Автор: Kawada Naoki, KOIKE Issei
Принадлежит: Okuma Corporation

A main spindle device for a machine tool includes a main spindle, a cushioning member, and an arithmetic unit. The cushioning member is disposed on a position where a vibration displacement of a rotator exists. The arithmetic unit uses data of a tool to be used to analyze a vibration mode in a free vibration of the rotator based on a support rigidity of a bearing, masses of respective parts of the rotator including the tool, an attenuation coefficient, and an equation of motion derived from rigidity and inertia by a rotation. An outer diameter of a sleeve positioned outside the bearing is changed such that a position of an antinode of the vibration or a position on which a vibration displacement exists in the vibration mode matches a position of the cushioning member inside the main spindle to change a preload on the bearing. 1. A main spindle device for a machine tool , comprising:a main spindle rotatably supported inside a sleeve via a bearing;a cushioning member disposed on a position where a vibration displacement of a rotator exists; andan arithmetic unit configured to use data of a tool to be used to analyze a vibration mode in a free vibration of the rotator based on a support rigidity of the bearing, masses of respective parts of the rotator including the tool, an attenuation coefficient, and an equation of motion derived from a rigidity and an inertia by a rotation, whereinan outer diameter of the sleeve positioned outside the bearing is changed such that a position of an antinode of the vibration or a position on which a vibration displacement exists in the vibration mode matches a position of the cushioning member inside the main spindle to change a preload on the bearing.2. The main spindle device for the machine tool according to claim 1 , wherein:a space is configured to be filled with a medium for applying a pressure, and the space is disposed between the housing and the sleeve on a proximity of installation positions of the respective bearings so as ...

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Номер записи: 58
10-02-2022 дата публикации

Bearing assembly for a driveshaft

Номер: US20220041054A1
Автор: Sebahattin Davazli
Принадлежит: Tirsan Kardan Sanayi ve Ticaret AS

The present invention relates to a bearing assembly ( 10 ) for a drives haft system comprising a frame ( 12 ) surrounding an opening ( 16 ); a flexible vibration isolator ( 20 ) disposed in the opening ( 16 ) and a ball bearing ( 50 ) is mounted at a central opening ( 24 ) of the vibration isolator ( 20 ). The ball bearing assembly ( 10 ) comprises a spherical cup ( 40 ) is nested to a central opening ( 24 ) of the vibration isolator ( 20 ) and spherically pivoted such that in an adjustment position changing the rotational axis (x) of the ball bearing ( 50 ) by a deviation angle (a) when a rotational force is applied.

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Номер записи: 59
28-01-2016 дата публикации

FOIL JOURNAL BEARING APPLICABLE TO HIGH SPEED MACHINING CENTER

Номер: US20160025130A1
Автор: Heshmat Hooshang
Принадлежит: Mohawk Innovative Technology, Inc.

A foil journal bearing. A single foil engages an inner surface of and is mounted to the bearing housing. The single foil extends circumferentially of the inner surface and has a generally flat top foil portion and a bump foil portion which is disposed between the top foil portion and the inner surface of the housing. The bump foil portion comprises a plurality of circumferentially spaced ridges which engage the top foil portion and further comprises a plurality of generally flat portions between the ridges respectively and which engage the inner surface of the housing. 1. A foil journal bearing comprising:a hollow housing having an elongate generally cylindrical inner surface;a single foil which engages said inner surface and which is mounted to said housing;said single foil extending longitudinally of said inner surface and extending circumferentially of said inner surface and having a generally flat top foil portion and having a bump foil portion which is disposed between said top foil portion and said inner surface of said housing; andsaid bump foil portion comprising a plurality of circumferentially spaced ridges which engage said top foil portion and further comprising a plurality of generally flat portions between said ridges respectively and which engage said inner surface of said housing.2. The foil journal bearing of claim 1 , wherein said single foil has a portion which is mounted to said housing claim 1 , said mounted portion dividing said single foil into said bump foil portion and said top foil portion.3. The foil journal bearing of claim 1 , wherein said single foil has a portion which is mounted to said housing claim 1 , said mounted portion being located at an end of said single foil.4. The foil journal bearing of claim 1 , wherein said bump foil portion has a plurality of regions claim 1 , wherein each of said regions has a plurality of ridges separated by flat portions claim 1 , and wherein said regions are separated by extended flat portions such ...

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Номер записи: 60
26-01-2017 дата публикации

FOIL BEARING WITH TRAILING EDGE KEY

Номер: US20170023056A1
Автор: McAuliffe Christopher, Santiago Anthony
Принадлежит:

A gas bearing within a cylinder is provided. The gas bearing comprises an anti-rotation tab sitting within a key way of the cylinder. Further, the gas bearing comprises a first foil forming an inner loop and an intermediary loop. The inner loop extends in a first direction from a first end to an intermediary portion. The intermediary loop extends from the intermediary to the anti-rotation tab. 1. A gas bearing within a cylinder , comprising:an anti-rotation tab sitting within a key way of the cylinder; anda first foil forming an inner loop and an intermediary loop,wherein the inner loop extends in a first direction from a first end to an intermediary portion; andwherein the intermediary loop extends from the intermediary portion to the anti-rotation tab.2. The gas bearing of claim 1 , wherein the anti-rotation tab is a trailing edge key.3. The gas bearing of claim 1 , wherein the inner loop is within an inner surface of the cylinder.4. The gas bearing of claim 3 , wherein the an intermediary foil is between the inner loop and the inner surface of the cylinder.5. The gas bearing of claim 1 , wherein the anti-rotation tab abuts a side of the key way.6. The gas bearing of claim 5 , wherein the anti-rotation tab resides between the side of the key way and a corrugated foil within the cylinder.7. The gas bearing of claim 1 , wherein the intermediate portion includes a dogleg bend that directs the intermediary loop between the inner loop and the inner surface of the cylinder.8. The gas bearing of claim 1 , wherein the intermediary loop extends along a radius to the anti-rotation tab.9. An air cycle machine comprising the gas bearing of . The present disclosure relates generally to a foil bearing with a trailing edge key, and more specifically, to a thin foil, hydrodynamic gas bearing comprising a trailing edge key to eliminate a foil fatigue failure.In general, thin foil, hydrostatic journal bearings are used to support a rotating element in rotating machinery such as air ...

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Номер записи: 61
10-02-2022 дата публикации

DAMPER CONTROL VALVE FOR A TURBOMACHINE

Номер: US20220042423A1
Автор: Doughty Roger Lee, Hopper Mark Leonard, Masters Justin Adam, MILLER Jacob Patrick
Принадлежит:

A gas turbine engine having a damping system that includes features for optimizing the damping response to vibrational loads on a rotary component for a wide range of operational conditions is provided. In one aspect, the damping system includes a damper control valve. The damper control valve receives working fluid from a working fluid supply and has a valve plunger movable between a first position and a second position. When the valve plunger is in the first position, the damper control valve permits working fluid to flow to a first damper associated with a first bearing coupled with the rotary component and to a second damper associated with a second bearing coupled with the rotary component. When the valve plunger is in the second position, the damper control valve permits working fluid to flow to the first damper but not the second damper. 1. A turbomachine , comprising:a rotary component rotatable about an axis of rotation;a bearing assembly having one or more bearings each operatively coupled with the rotary component, each of the one or more bearings having a damper associated therewith, each of the dampers defining one or more chambers;a damper control valve having a valve casing defining a valve chamber, the valve chamber being in fluid communication with a working fluid supply and the one or more chambers, the damper control valve operable to receive working fluid from the working fluid supply, andwherein the damper control valve has a valve plunger movable within the valve chamber between a first position in which working fluid flows to at least two chambers of the one or more chambers and a second position in which working fluid flows to at least one less chamber than the at least two chambers to which working fluid flows when the valve plunger is in the first position.2. The turbomachine of claim 1 , wherein the damper control valve has a biasing member operable to bias the valve plunger in the first position.3. The turbomachine of claim 2 , wherein ...

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Номер записи: 62
24-01-2019 дата публикации

TILTING PAD JOURNAL BEARING

Номер: US20190024707A1
Автор: ARIHARA Hirotoshi
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

A tilting pad journal bearing includes a bearing housing, a plurality of pads and a projecting portion. The plurality of pads are arranged on an inner circumferential surface of the bearing housing and support a rotary shaft. The projecting portion is provided on a surface of the pad and has a plurality of projections. The projecting portion is provided on a surface other than a pad bearing surface in surfaces of the pad, the pad bearing surface being a surface that faces the rotary shaft. 1. A tilting pad journal bearing , comprising:a bearing housing;a plurality of pads that are arranged on an inner circumferential surface of the bearing housing and support a rotary shaft; anda projecting portion provided on a surface of the pad and having a plurality of projections,wherein the projecting portion is provided on a surface other than a pad bearing surface in surfaces of the pad, the pad bearing surface being a surface that faces the rotary shaft.2. The tilting pad journal bearing according to claim 1 ,wherein the projecting portion is provided on a surface of an end portion of the pad at a downstream side in a rotation direction of the rotary shaft.3. The tilting pad journal bearing according to claim 2 ,wherein when seen from an axial direction of the rotary shaft, a bottom portion of the projecting portion resides within an area that includes an imaginary line that extends from an end of the pad bearing surface at the downstream side in the rotation direction of the rotary shaft to a radially outer side of the rotary shaft along a radial direction of the rotary shaft and a portion that is situated towards the downstream side in the rotation direction of the rotary shaft from the imaginary line.4. The tilting pad journal bearing according to claim 1 ,wherein the bearing housing comprises an oil supply port for supplying a lubricant into the bearing housing, andthe oil supply port is directed towards the projecting portion.5. The tilting pad journal bearing ...

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Номер записи: 63
23-01-2020 дата публикации

Radial foil bearing

Номер: US20200025245A1
Автор: Naomichi Omori
Принадлежит: IHI Corp

The radial foil bearing (3, 3A, 3B) includes: a housing (12) provided with an insertion hole (12a), a pair of engagement grooves (15) extending outward in a radial direction from an inner peripheral edge of the insertion hole being provided in both end surfaces in an axial direction of the housing; a back foil (11) disposed on an inner circumferential surface of the insertion hole; an intermediate foil (10) supported by the back foil; and an engagement member (30) including a pair of engagement legs (31) engaging with the pair of engagement grooves, and a connection portion (32) connecting the pair of engagement legs. The intermediate foil is provided with a recess (10c) recessed and protruding toward the back foil, and the connection portion is disposed in the recess.

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Номер записи: 64
28-01-2021 дата публикации

MULTI-FILM DAMPER RINGS WITH SPACERS

Номер: US20210025289A1
Автор: BEAMISH David, IVAKITCH Richard
Принадлежит:

A multi-film oil damper for accommodating radial movement of a rotary shaft bearing relative to a bearing housing, the multi-film oil damper comprising: an annular damper cavity defined within the bearing housing between a radially outward wall, a first radially extending side wall and a second radially extending side wall, the annular damper cavity having an oil inlet in the radially outward wall, the oil inlet being in communication with a source of pressurized oil; an inner damper ring having axial ends abutting the first and second radially extending side walls of the annular damper cavity; a plurality of outer damper rings coaxially nested between the inner damper ring and the radially outward wall, each outer damper ring having axial ends adjacent the first and second radially outward walls of the annular damper cavity, each outer damper ring having a first cylindrical surface and a second cylindrical surface; a plurality of spacer bosses circumferentially spaced apart at each axial end of the plurality of outer damper rings, a contact surface of each spacer boss extending radially beyond the first surface of an associated outer damper ring and engaging the second surface of an adjacent outer damper ring defining an oil filled gap there between; and a radial oil channel through a central portion of the plurality of outer damper rings in fluid communication with the oil inlet. 1. A multi-film oil damper in a gas turbine engine , comprising:a housing defining an annular damper cavity having an oil inlet in communication with a source of pressurized oil;a plurality of nested damper rings disposed within the annular damper cavity, the plurality of nested damper rings defining a plurality of squeeze film annuli, the nested damper rings having respective radially inner surfaces and radially outer surfaces;first and second circumferential arrays of spacer bosses between adjacent damper rings of the plurality of nested damper rings, the first and second ...

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Номер записи: 65
28-01-2021 дата публикации

METHOD OF SEPARATING AND SEALING MULTI FILM DAMPER RINGS

Номер: US20210025290A1
Автор: BEAMISH David, IVAKITCH Richard
Принадлежит:

A multi-film oil damper for accommodating radial movement of a rotary shaft bearing relative to a bearing housing, the multi-film oil damper comprising: an annular damper cavity defined within the bearing housing between a radially outward wall, a first radially extending side wall and a second radially extending side wall, the annular damper cavity having an oil inlet in the radially outward wall, the oil inlet being in communication with a source of pressurized oil; an inner damper ring having axial ends abutting the first and second radially extending side walls of the annular damper cavity; a plurality of outer damper rings coaxially nested between the inner damper ring and the radially outward wall, each outer damper ring having axial ends adjacent the first and second radially outward walls of the annular damper cavity, each outer damper ring having a first cylindrical surface and a second cylindrical surface; a spacer ring disposed at each axial end of the plurality of outer damper rings, a contact surface of the spacer ring extending radially beyond the first surface of an associated outer damper ring and engaging the second surface of an adjacent outer damper ring defining an oil filled gap there between; and a radial oil channel through a central portion of the plurality of outer damper rings in fluid communication with the oil inlet. 1. A multi-film oil damper in a gas turbine engine , comprising:a housing defining an annular damper cavity having an oil inlet in communication with a source of pressurized oil;a plurality of nested damper rings disposed within the annular damper cavity, the plurality of nested damper rings defining a plurality of squeeze film annuli, the nested damper rings having respective radially inner surfaces and radially outer surfaces;at least one spacer ring disposed between adjacent nested damper rings of the plurality of nested damper rings and extending between the radially outer surface and the radially inner surface of the ...

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Номер записи: 66
28-01-2021 дата публикации

METHOD TO SUPPLY OIL TO A MULTI-FILM DAMPER

Номер: US20210025291A1
Автор: BEAMISH David, IVAKITCH Richard
Принадлежит:

A multi-film oil damper has a housing defining an annular damper cavity having an oil inlet in communication with a source of pressurized oil. A plurality of nested damper rings is disposed within the annular damper cavity, the plurality of nested damper rings defining a plurality of squeeze film annuli. Spacer rings are disposed adjacent opposed ends of the damper rings. A contact surface of the spacer rings extends radially beyond a first cylindrical surface of an associated damper ring for engaging a second cylindrical surface of an adjacent damper ring. Recesses are defined in the second cylindrical surface of the damper rings, the recesses fluidly communicating between the squeeze film annuli and the oil inlet. 1. A multi-film oil damper in a gas turbine engine , comprising:a housing defining an annular damper cavity having an oil inlet in communication with a source of pressurized oil;a plurality of nested damper rings disposed within the annular damper cavity, the plurality of nested damper rings defining a plurality of squeeze film annuli, the nested damper rings having respective radially inner cylindrical surfaces and radially outer cylindrical surfaces, and at least one recess defined in the respective radially outer cylindrical surfaces of the plurality of nested damper rings communicating between the squeeze film annuli and the oil inlet;spacer rings disposed adjacent opposed ends of associated damper rings of the plurality of nested damper rings, a contact surface of the spacer rings extending radially outward of the radially outer cylindrical surface of an associated damper ring of the plurality of nested damper rings and engaging the radially inner cylindrical surface of an adjacent damper ring of the plurality of nested damper rings.2. The multi-film oil damper according to wherein the respective radially outer cylindrical surfaces of the plurality of nested damper rings have annular grooves for receiving the spacer rings.3. The multi-film oil ...

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Номер записи: 67
29-01-2015 дата публикации

RADIAL FOIL BEARING

Номер: US20150030269A1
Автор: Omori Naomichi
Принадлежит:

A radial foil bearing () that supports a rotating shaft (). This radial foil bearing () is provided with a top foil (), a back foil (), and a bearing housing () that houses them. A through-slot () is formed in the inner circumferential surface of the bearing housing (), and engagement slots () are formed in the through-slot () by a fixing tool (). 1. A radial foil bearing that , by being fitted on a rotating shaft , supports the rotating shaft , comprising:a cylindrical top foil that is arranged facing the rotating shaft; a back foil that is arranged on the outer side of the top foil in the radial direction; and a cylindrical bearing housing that houses the top foil and the back foil in the state of being inserted therein,wherein a through-slot that is continuous from one end to the other end along the axial direction is formed in the inner circumferential surface of the bearing housing;a fixing tool that forms a plurality of engagement slots by dividing the through-slot in the lengthwise direction is fitted in the through-slot;a regulating portion that regulates the movement of the fixing tool in the lengthwise direction of the through-slot is provided in the through-slot and the fixing tool;the top foil is formed by a metal foil that is rectangular and has a first uneven portion consisting of a convex portion and a concave portion on one side, and has a second uneven portion that forms a concave portion at a position corresponding to the convex portion of the first uneven portion and forms a convex portion at at least a portion of the position corresponding to the concave portion of the first uneven portion on the other side that is opposite the one side being wound into a cylindrical shape so that the first uneven portion and the second uneven portion overlap, and each convex portion in the first uneven portion and the second uneven portion passes through each respectively corresponding concave portion in the first uneven portion and the second uneven portion to ...

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Номер записи: 68
29-01-2015 дата публикации

FOIL JOURNAL BEARING APPLICABLE TO HIGH SPEED MACHINING CENTER

Номер: US20150030270A1
Автор: Heshmat Hooshang
Принадлежит: Mohawk Innovative Technology, Inc.

A foil journal bearing applicable to high speed machining and grinding machines for machining microscopic features. A single foil is secured to and supported by a hollow, generally cylindrical, housing. The foil has a length substantially equal to twice the interior circumference of the housing and a mounting feature, extending across its width, for engagement with a feature of complementary shape in the housing. One portion of the foil has a length approximately equal to one half of the foil length, and comprises a bump foil and a plurality of regions comprising groups of generally uniformly-spaced ridges and flats, the regions being separated by extended flat regions. The other portion of the foil has a length approximately equal to one half of the foil length, and comprises the top foil and is generally flat and overlies the bump foil which overlies the interior of the housing. 1. A foil journal bearing comprising a plurality of top foils overlying a like number of bump foils , supported by a hollow , generally cylindrical housing with a length and a cylinder axis and an interior circumference , the bump foils comprising a plurality of ridges and flats oriented generally parallel to the cylinder axis;the top foils each having a length, a width generally equal to the length of the housing and two ends, the ends being unsecured, each top foil having a mounting feature, extending across its width, for engagement with one of a plurality of features of complementary shape in the housing;the number of complementary-shaped features in the housing being equal to the number of top foils;the complementary-shaped features being spaced-apart and uniformly distributed around the interior circumference of the housing;the mounting feature of each top foil being located between the ends of the top foil to divide the length of the top foil into a leading segment and a trailing segment;the lengths of the top foils being constructed to ensure that a portion of the leading segment ...

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Номер записи: 69
29-01-2015 дата публикации

ROLLING BEARING ASSEMBLY

Номер: US20150030273A1
Автор: Ebert Franz-Josef, Gloeckner Peter, Sebald Wilhelm
Принадлежит: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG

A rolling bearing assembly, comprising at least a rolling bearing outer ring () of a rolling bearing, an intermediate element that surrounds the rolling bearing outer ring (), and a housing part, into which the intermediate element () is inserted. The outer ring () is rotatably arranged in the intermediate element () and has a circumferential oil catching strip () at one of the end faces thereof, which oil catching strip is designed to convey oil into a contact zone formed between the outer ring () and the intermediate ring (). A damping system having a damping recess is formed between the housing and the intermediate element ().

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Номер записи: 70
02-02-2017 дата публикации

BEARING SUPPORT HOUSING FOR A GAS TURBINE ENGINE

Номер: US20170030221A1
Автор: Hopper Mark Leonard, PIAZZA Pablo Gabriel, Watson Andrew Michael
Принадлежит:

A bearing support housing for a gas turbine engine includes, in radial sequence from a center outwards: an inner ring defining a central bore; a middle ring including an array of inner slots, an outer web including an array of outer slots, wherein the inner and outer slots are positioned, sized, and shaped so as to divide the middle ring and the outer web into an array of tangentially-extending beams and radially-extending inner and outer struts; and an outer ring. 1. A bearing support housing for a gas turbine engine , comprising , in radial sequence from a center outwards:an inner ring defining a central bore;a middle ring including an array of inner slots,an outer web including an array of outer slots, wherein the inner and outer slots are positioned, sized, and shaped so as to divide the middle ring and the outer web into an array of tangentially-extending beams and radially-extending inner and outer struts; andan outer ring.2. The bearing support housing of wherein the inner ring includes an axially-extending inner lip.3. The bearing support housing of wherein the inner ring comprises an array of inner holes.4. The bearing support housing of wherein an annular inner web is disposed between the inner ring and the middle ring.5. The bearing support housing of wherein the inner web comprises weight-reduction openings.6. The bearing support housing of wherein the middle ring comprises an array of middle holes.7. The bearing support housing of wherein the outer ring comprises an array of outer holes.8. A bearing apparatus of a gas turbine engine claim 1 , comprising:a stationary frame;an annular bearing support housing mounted in the frame;a bearing mounted in a central bore of the bearing support housing; anda shaft mounted in the bearing, wherein the bearing support housing includes a plurality of flexible tangential beams that permit limited radial movement of the bearing relative to the frame.9. The apparatus of where a portion of the bearing support housing is ...

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Номер записи: 71
02-02-2017 дата публикации

FOIL BEARING WITH SPLIT KEY

Номер: US20170030404A1
Автор: McAuliffe Christopher, Santiago Anthony
Принадлежит:

A gas bearing within a cylinder is provided. The gas bearing comprises an anti-rotation tab comprising a first side and a second side, the anti-rotation tab sitting within a key way of the cylinder. Further, the gas bearing also comprises a first foil extending in a first direction from a first end to the first side of the anti-rotation tab and a second foil extending in a second direction from a second end to the second side of the anti-rotation tab. 1. A gas bearing within a cylinder , comprising:an anti-rotation tab comprising a first side and a second side, the anti-rotation tab sitting within a key way of the cylinder;a first foil extending in a first direction from a first end to the first side of the anti-rotation tab; anda second foil extending in a second direction from a second end to the second side of the anti-rotation tab.2. The gas bearing of claim 1 , wherein the anti-rotation tab is a split key.3. The gas bearing of claim 1 , wherein the first foil is a first loop within an inner surface of the cylinder.4. The gas bearing of claim 3 , wherein the second foil is a second loop between the first foil and the inner surface of the cylinder.5. The gas bearing of claim 1 , wherein the second side of the anti-rotation tab abuts a side of the key way.6. The gas bearing of claim 1 , wherein the first side of the anti-rotation tab resides between the second side of the anti-rotation tab and a corrugated foil within the cylinder.7. The gas bearing of claim 1 , wherein the first foil extends along a radius in the first direction from an intermediary portion to the first side of the anti-rotation tab claim 1 ,wherein the radius is greater than a 180°.8. The gas bearing of claim 1 , wherein the second foil extends along a radius in the first direction from an intermediary portion to the second side of the anti-rotation tab claim 1 ,wherein the radius is greater than a 180°.9. The gas bearing of claim 1 , wherein the gas bearing is included in an air cycle machine. ...

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Номер записи: 72
05-02-2015 дата публикации

SYSTEM, METHOD AND APPARATUS FOR TOLERANCE RING WITH FUNCTIONAL LAYERS

Номер: US20150033540A1
Автор: Burgeff Dominique, Jaeger Hans-Juergen
Принадлежит:

A tolerance ring with functional layers has an annular band and an elastomeric layer. The assembly also may have a low friction layer, which may be bonded, calendared or laminated thereto. The low friction material may completely encapsulate the annular band. 1. A method of forming a tolerance ring , comprising:(a) providing a sheet formed from a metallic material;(b) forming apertures in the sheet;(c) fabricating geometrical formations into the sheet to form a sheet profile;(d) encapsulating the sheet profile in a low friction material;(e) forming the encapsulated sheet profile into an annular shape to form a tolerance ring.2. The method according to claim 1 , wherein step (b) comprises forming shaped holes in the sheet by perforating or stamping.3. The method according to claim 1 , wherein step (c) comprises fabricating the geometrical formations into the sheet by coining claim 1 , forming or deep drawing waves claim 1 , balls or cones to form the sheet profile.4. The method according to claim 1 , wherein step (d) comprises encapsulating the sheet profile in the low friction material by calendaring or laminating through the apertures in the sheet.5. The method according to claim 1 , wherein the sheet is formed into an annular band having radial inner and outer surfaces claim 1 , and the low friction material encapsulates the annular band such that both the radial inner and outer surfaces are located within the low friction material.6. The method according to further comprising claim 1 , after step (d) claim 1 , forming shapes in the low friction material that are complementary in shape to the geometrical formations in the sheet profile claim 1 , and the forming shapes step comprises at least one of coining claim 1 , calendaring and sintering the low friction material.7. The method according to claim 1 , wherein step (c) occurs before step (d).8. The method according to claim 1 , wherein step (d) comprises lamination and occurs before step (c).9. The method ...

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Номер записи: 73
04-02-2016 дата публикации

BELT DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

Номер: US20160033911A1
Автор: Fukuhata Yoshihiro, Furuichi Yuusuke
Принадлежит: RICOH COMPANY, LTD.

A belt device includes a support and a support roller that support a belt. A driven gear is mounted on one of a plurality of shafts of the support roller. A driving gear meshing with the driven gear at a mesh position transmits a driving force to the support roller through the driven gear to rotate the support roller. An elastic bearing rotatably bearing each of the plurality of shafts of the support roller has an inner diameter smaller than an outer diameter of the shaft of the support roller. The bearing includes a slit defining a part of the bearing in a circumferential direction thereof. The slit is disposed upstream from the mesh position in the direction of rotation of the support roller such that the mesh position and the slit define a circumferential angle not smaller than about 20 degrees. 1. A belt device comprising:a belt;a support supporting the belt;a support roller rotatable in a predetermined direction of rotation and supporting the belt, the support roller including a plurality of shafts disposed at both lateral ends of the support roller in an axial direction thereof, respectively;a driven gear mounted on one of the plurality of shafts of the support roller;a driving gear meshing with the driven gear at a mesh position to transmit a driving force to the support roller through the driven gear to rotate the support roller; andan elastic bearing rotatably bearing each of the plurality of shafts of the support roller and having an inner diameter smaller than an outer diameter of the shaft of the support roller,the bearing including a slit defining a part of the bearing in a circumferential direction thereof, the slit being disposed upstream from the mesh position in the direction of rotation of the support roller such that the mesh position and the slit define a circumferential angle not smaller than about 20 degrees.2. The belt device according to claim 1 , wherein the inner diameter of the bearing is smaller than the outer diameter of the shaft of the ...

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Номер записи: 74
01-05-2014 дата публикации

Vibration damping for apparatus comprising rotating gantry

Номер: US20140119515A1
Автор: Gilbert W. McKenna
Принадлежит: Individual

One or more techniques and/or apparatuses described herein provide a roller truck comprising non-rotating dampening material that is configured to dampen vibrations and mitigate the transference of vibrations from a rotating gantry to a support frame and vice-versa during rotation of the rotating gantry relative to the support frame. It will be appreciated that two different types of roller trucks, base roller trucks and z-axis roller trucks, are described herein, and the non-rotating dampening material may be inserted into one or both types of roller trucks. While the instant disclosure finds particular application in the context of computed tomography apparatus, the instant disclosure is not intended to be limited to such applications.

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Номер записи: 75
11-02-2016 дата публикации

Rear bearing sleeve for gas turbine auxiliary power unit

Номер: US20160040554A1
Автор: Ara J. Hovhannisian, Christine Ingrid Schade, Walter Herfort
Принадлежит: United Technologies Corp

The presently disclosed embodiments utilize a rear bearing sleeve interposed between an inner surface of an exhaust housing of a gas turbine auxiliary power unit and the rear roller bearing supporting a turbine within the exhaust housing. In some embodiments, the rear bearing sleeve includes a lubricant supply channel formed in an outer surface thereof for receipt of a supply of lubricant, and at least one lubricant supply opening between the outer surface and an inner surface thereof, the inner surface of the bearing sleeve forming an outer race of the rear roller bearing. The at least one lubricant supply opening supplies the lubricant to a gap between the rear roller bearing and the rear bearing sleeve for formation of a squeeze film viscous damper therebetween.

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Номер записи: 76
08-02-2018 дата публикации

VARIABLE PRELOADED DUPLEX THRUST BEARING SYSTEM FOR A GEARED TURBOFAN ENGINE

Номер: US20180038378A1
Автор: DiBenedetto Enzo
Принадлежит:

A bearing system for a gas turbine engine includes an outer housing and a first ball bearing assembly disposed radially inward from the outer housing relative a center axis of the outer housing. The bearing system also includes a second ball bearing assembly disposed radially inward from the outer housing and positioned axially aft of the first ball bearing assembly. The bearing system also includes a resilient member that is connected to the outer housing and compressed against at least one of a first outer race of the first ball bearing assembly and a second outer race of the second ball bearing assembly in an axial direction parallel to the center axis. 1. A bearing system for a gas turbine engine comprises:an outer housing comprising a forward end and an aft end; a first outer race disposed radially inward from the outer housing;', 'a first inner race disposed radially inward from the first outer race; and', 'a first plurality of ball bearing elements disposed between the first outer race and the first inner race;, 'a first ball bearing assembly disposed radially inward from the outer housing relative a center axis of the outer housing, wherein the first ball bearing assembly comprises a second outer race disposed radially inward from the outer housing;', 'a second inner race disposed radially inward from the second outer race; and', 'a second plurality of ball bearing elements disposed between the second outer race and the second inner race;, 'a second ball bearing assembly disposed radially inward from the outer housing and positioned axially aft of the first ball bearing assembly, wherein the second ball bearing assembly comprises a flange that extends radially relative the center axis;', 'a body that extends axially parallel to the center axis; and', 'a curved bow disposed radially inward from the flange and the body and connecting the flange to the body., 'a resilient member connected to the outer housing, wherein the resilient member is compressed against ...

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Номер записи: 77
24-02-2022 дата публикации

DAMPER BEARING AND DAMPER

Номер: US20220056952A1
Автор: Ishimaru Hidetsugu, TAKEUCHI Ryota
Принадлежит: KAWASAKI JUKOGYO KABUSHIKI KAISHA

A damper bearing includes: a bearing portion that supports a rotary shaft; and a tubular portion located around an outer circumference of the bearing portion, the tubular portion having a predetermined radial thickness and having an outer surface attachable to a structural member, wherein the bearing portion is configured as a hydrostatic bearing that supports the rotary shaft with a predetermined bearing clearance between the hydrostatic bearing and the rotary shaft, the tubular portion includes a plurality of planar slits located between the outer surface of the tubular portion and an inner surface of the tubular portion, each planar slit having a predetermined width, extending circumferentially, and further extending through an entire axial length of the tubular portion, the planar slits are arranged circumferentially at predetermined intervals in the tubular portion, each planar slit has an open end at the outer surface of the tubular portion, extends radially from the open end, and extends circumferentially in an arc to a predetermined point in a region between the outer surface and the inner surface, and the tubular portion includes a bearing fluid supply hole formed in a region where none of the planar slits is situated, the bearing fluid supply hole extending from the outer surface of the tubular portion to the bearing portion without passing through any of the planar slits. The damper bearing thus configured can be used as a bearing for a small machine and exhibit a damper function to damp vibration transmitted from the rotary shaft of the machine. 1. A damper bearing comprising:a bearing portion that supports a rotary shaft; anda tubular portion located around an outer circumference of the bearing portion, the tubular portion having a predetermined radial thickness and having an outer surface attachable to a structural member, whereinthe bearing portion is configured as a hydrostatic bearing that supports the rotary shaft with a predetermined bearing ...

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Номер записи: 78
06-02-2020 дата публикации

MAGNETIC SQUEEZE FILM DAMPER SYSTEM FOR A GAS TURBINE ENGINE

Номер: US20200040767A1
Автор: Burns Donald W., Clemens Standford, Cookerly Alan B., Copeland Andrew D.
Принадлежит:

A magnetic squeeze film damper system comprises a bearing assembly having an outer race with a first outer surface and a first inner surface and a bearing located along the first inner surface. The system further comprises a squeeze film damper housing having a second outer surface and a second inner surface that is contiguous with the first outer surface. A channel having a forward end and an aft end is defined within the housing along the second inner surface, the channel bordered by the first outer surface. The system further includes a first seal gland located along the forward end of the channel and a second seal gland located along the aft end of the channel. Both seal glands comprise a reservoir for holding a magneto-rheological fluid, the reservoir encased in an elastomer. At least one electromagnet is arranged in close proximity to each of the seal glands. 1. A magnetic squeeze film damper system comprising:a bearing assembly having an outer race with a first outer surface and a first inner surface;at least one bearing located along the first inner surface;a squeeze film damper housing having a second outer surface and a second inner surface, the second inner surface contiguous with the first outer surface;a channel for flowing a fluid, the channel defined within the squeeze film damper housing at the second inner surface between the squeeze film damper housing and the first outer surface of the outer race, the channel having a forward end and an aft end;a first seal gland disposed between the squeeze film damper housing and the outer race for sealing the channel forward end and a second seal gland disposed between the squeeze film damper housing and the outer race for sealing the channel aft end;the first seal gland comprising a sealed reservoir surrounded by an elastomer, the reservoir containing a magneto-rheological fluid; andan electromagnet arranged in close proximity to the first seal gland, whereby when the electromagnet is energized the viscosity ...

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Номер записи: 79
06-02-2020 дата публикации

SUPERELASTIC BALLS FOR BALL BEARINGS AND METHOD OF MANUFACTURE

Номер: US20200040943A1
Автор: de Graffenried Christian
Принадлежит: Heraeus Deutschland GmbH & Co. KG

One aspect relates to a rolling element for a ball bearing wherein the rolling element has: (i) a Young modulus E in the range up to and including 100 GPa; and (ii) a yield strength Rpin the range up to and including 1800 MPa, or wherein the rolling element has at least an alloy of nickel (Ni) and titanium (Ti), wherein the weight ratio of Ni:Ti in the alloy is in the range of from 57:43 to 50:50. One aspect is a rolling bearing with: a. at least an outer ring; b. at least an inner ring, wherein a raceway is defined by the arrangement of the outer ring and the inner ring; and c. at least three rolling elements wherein the rolling elements are arranged in the raceway, wherein at least one rolling element comprises at least an alloy as mentioned above. 1. A ball bearing comprising:a raceway;a rolling element in the raceway, the rolling element comprising at least an alloy of Nickel and Titanium, wherein the weight ratio of Ni:Ti in the alloy is in the range of from 55:45 to 50:50;wherein the amount of alloy in the rolling element is from 85 wt. % to 100 wt. %, based on the total weight of the rolling element;wherein the ball bearing is configured within a medical handheld device, a pacemaker or a watch; andwherein the ball bearing comprises more than two points of contact with the rolling element2. The ball bearing of claim 1 , wherein the weight ratio of Ni:Ti in the alloy is 55:45.3. The ball bearing of claim 1 , wherein the raceway comprises and inner ring and an outer ring claim 1 , the inner ring having an inner diameter in the range of 4 to 10 mm.4. A ball bearing including a rolling element claim 1 , wherein the rolling element comprises:(i) a Young modulus E in the range up to and including 100 GPa;{'sub': '0.2', '(ii) yield strength Rpin the range up to and including 1800 MPa; and'}(iii) at least an alloy of Nickel and Titanium, wherein the weight ratio of Ni:Ti in the alloy is in the range of from 55:45 to 50:50wherein the ball bearing is configured within a ...

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Номер записи: 80
18-02-2021 дата публикации

Spring Finger Ring Support Assembly for a Bearing

Номер: US20210047940A1
Автор: GANIGER Ravindra Shankar, Mahadeo Bhujabal Prashant, Moniz Thomas Ory, Sharma Praveen, Shivamurthy Ambika, Yadav Satish Kumar
Принадлежит:

A support assembly for a bearing of a gas turbine engine including a spring finger ring positioned radially exterior to an outer race of the bearing. The spring finger ring includes an outer ring positioned radially exterior to the outer ring, an inner ring positioned radially interior to the outer ring, and a plurality of spring fingers extending between the inner and outer rings. One or more spring fingers configured as two-sided spring fingers including a first ligament coupled to the outer ring and extending at a first circumferential angle to a first radial bumper proximate to the inner ring and a second ligament coupled to the inner ring and extending at a different second circumferential angle to a second radial bumper proximate to the outer ring. The first and second radial bumpers define first and second radial gaps between the bumpers and the inner and outer rings, respectively. 1. A support assembly for a bearing of a gas turbine engine including a shaft extending along an axial direction , the support assembly comprising:an outer race positioned radially exterior to the bearing such that the outer race supports the bearing; and an outer ring positioned radially exterior to the outer race;', 'an inner ring positioned radially interior to the outer ring such that the inner ring and outer ring define a gap therebetween; and', 'a plurality of spring fingers extending between the inner and outer rings such that the plurality of fingers provides damping of the outer race, wherein at least a portion of the plurality of spring fingers is configured as two-sided spring fingers and each includes a first ligament coupled to the outer ring and extending to a first radial bumper proximate to the inner ring to define a first circumferential side of each the two-sided spring fingers and a second ligament coupled to the inner ring and extending to a second radial bumper proximate to the outer ring to define a second circumferential side of each of the two-sided spring ...

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Номер записи: 81
18-02-2016 дата публикации

METHOD FOR PRODUCING A BEARING, AND BEARING

Номер: US20160047414A1
Автор: Conrad Thomas, Schnaars Wolfgang
Принадлежит:

A method for producing a bearing, in particular a hydraulic axle support bearing, which comprises the following steps: preassembling an inner part in an outer part with an elastomer body which is arranged in between and is reinforced by a plastic cage which at least partially bears against an inner wall of the outer part. The plastic cage is configured to radially protrude over an upper edge and a lower edge of the out part and, at the lower edge of the outer part, to project over the latter. Simultaneously calibrating the outer part and the plastic cage by constricting the outer part and the plastic cage from a respective first diameter to a respective second diameter which is smaller than the respective first diameter. After the constriction, the plastic cage projects over the upper edge of the outer part for the form-fitting axial securing of the outer part. 112-. (canceled)13. A method for producing a bearing , comprising the steps of:preassembling an inner part in an outer part with an elastomer body disposed therebetween, the elastomer body being reinforced by a plastic cage, the plastic cage at least partially bearing against an inner wall of the outer part;wherein the plastic cage is configured to protrude radially over an upper edge and to protrude over and project beyond a lower edge of the outer part; andsimultaneously calibrating the outer part and the plastic cage by constricting the outer part and the plastic cage from a respective first diameter to a respective second diameter, wherein, after the constriction, the plastic cage projects over the upper edge of the outer part for the form-fitting axial securing of the outer part.14. A method in accordance with claim 13 , wherein there is clearance during the pre-assembly step.15. A method in accordance with claim 13 , wherein the constricting of the outer part from the first diameter to the second diameter comprises constricting by at least 3 mm.16. A method in accordance with claim 15 , wherein the ...

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Номер записи: 82
18-02-2016 дата публикации

Slip-free rolling bearing

Номер: US20160047417A1
Автор: Jörg Binderszewsky, Jörg Loos, Wolfram Kruhöffer
Принадлежит: Schaeffler Technologies AG and Co KG

A slip-free rolling bearing ( 1 ) is provided, in the outer ring ( 3 ) of which there is formed an encircling groove ( 7 ). The rolling bodies ( 2 ) of this rolling bearing are surrounded, in the manner of an envelope circle, by a central ring ( 8 ) and are in physical contact therewith. To ensure permanent drive of the rolling bodies, the central ring is inserted into the groove so as to be radially free but is fixed rotationally fixedly in said groove, wherein a radial depth of the groove is greater than a thickness of the central ring. The rotational fixing of the central ring in the groove of the outer ring is effected by a spring element.

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Номер записи: 83
03-03-2022 дата публикации

CENTRIFUGAL FORCE BEARING WITH PIEZO CLUTCH

Номер: US20220063797A1
Автор: Baskin Bryan Kenneth
Принадлежит: Bell Textron Inc.

An elastomeric bearing assembly has a centrifugal force bearing axially captured relative to a sliding interface. The sliding interface has one or more low friction regions and one or more high friction regions. One or more piezo actuators are configured to force one or more corresponding high friction regions against the centrifugal force bearing when actuated. The sliding interface may have a circular shape, wherein the one or more low friction regions and the one or more high friction regions are alternating concentric segments of the sliding interface. The one or more high friction regions are recessed on the sliding interface relative to the one or more low friction regions.

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Номер записи: 84
03-03-2022 дата публикации

GAS BEARING AND METHOD FOR PRODUCING SAME

Номер: US20220065288A1
Автор: Bauer Marcel, MAHNER MARCEL, Rieken Markus, Schweizer Bernhard, Zeise Pascal
Принадлежит:

The invention relates to a gas bearing for contactlessly bearing a rotatable element (). The gas bearing comprises: a housing () having an opening for receiving the rotatable element; and at least two sliding films (), which are arranged on an interior () of the opening without overlap and which each have a first end portion () and a second end portion () for support on the housing (). The sliding films () are designed to radially support the rotatable element relative to the housing () only by means of the first and second end portions (), the second end portion () providing frictional contact with the interior () and the first end portion () being fastened to the housing. 1. A gas bearing for supporting a rotatable element in a contact-free manner , comprising:a housing having an opening for receiving the rotatable element; andat least two sliding foils arranged without overlap on an inner side of the opening and each having a first end portion and a second end portion for support on the housing,wherein the sliding foils are configured to radially support the rotatable element relative to the housing only through the first and second end portions, wherein the second end portion provides frictional contact with the inner side and the first end portion is secured to the housing.2. The gas bearing according to claim 1 , wherein at least one of the sliding foils is formed multilayered and the individual layers are attached to the housing on a same side or on opposite sides.3. A gas bearing for supporting a rotatable element in a contact-free manner claim 1 , having the following features:a housing having an opening for receiving the rotatable element; anda plurality of multilayered sliding foils, wherein each multilayered sliding foil is arranged without overlapping an adjacent multilayered sliding foil on an inner side of the opening, and the individual layers of the multilayered sliding foils are all fixed to the housing with a first end portion, and the opposite ...

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Номер записи: 85
08-05-2014 дата публикации

MAIN SPINDLE DEVICE OF MACHINE TOOL

Номер: US20140126845A1
Автор: KOIKE Issei
Принадлежит: Okuma Corporation

A main spindle device of a machine tool includes a plurality of bearings that rotatably support a main spindle of the machine tool, and that are placed inside a housing with a pressure receiving member interposed between the bearings and the housing. The pressure receiving member is capable of moving in a direction perpendicular to an axial direction of the main spindle. A pressure chamber, which a pressure medium pressing the pressure receiving member toward the bearings in the perpendicular direction is supplied to, is formed in the housing. A plurality of the pressure chambers are independently formed in the housing so as to correspond to the bearings, respectively. The main spindle device further includes a plurality of adjustment units provided independently so as to correspond the pressure chambers, respectively, and each capable of independently adjusting a pressure of the pressure medium for a corresponding one of the pressure chambers. 1. A main spindle device of a machine tool , comprising:a plurality of bearings that rotatably support a main spindle of the machine tool, and that are placed inside a housing with a pressure receiving member interposed between the bearings and the housing, whereinthe pressure receiving member is capable of moving in a direction perpendicular to an axial direction of the main spindle,a pressure chamber, which a pressure medium pressing the pressure receiving member toward the bearings in the perpendicular direction is supplied to, is formed in the housing, anda plurality of the pressure chambers are independently foamed in the housing so as to correspond to the bearings, respectively, the main spindle device of the machine tool further comprising:a plurality of adjustment units provided independently so as to correspond the pressure chambers, respectively, and each capable of independently adjusting a pressure of the pressure medium for a corresponding one of the pressure chambers.2. The main spindle device of the machine ...

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Номер записи: 86
26-02-2015 дата публикации

FLOATING BEARING FOR A STEERING GEAR

Номер: US20150053034A1
Автор: FUECHSEL Dennis, HAFERMALZ Jens
Принадлежит:

A floating bearing for a steering gear, having an inner ring for receiving a pinion shaft of the steering gear and having an outer ring which surrounds the inner ring and which serves for the mounting of the floating bearing in a housing of the steering gear, wherein the outer ring and the inner ring form an annular gap between them and wherein the outer ring and the inner ring are connected to one another by means of at least one flexible connecting part such that said outer ring and inner ring are movable relative to one another in at least one radial direction, is characterized in that the outer ring and/or the inner ring form, within the connecting part, at least one projection which projects into the annular gap such that the spacing between the outer ring and inner ring is smaller in the region of the projection than in the remaining section of the annular gap. 1. A floating bearing for a steering gear , having an inner ring for receiving a pinion shaft of the steering gear and having an outer ring , which surrounds the inner ring , for the mounting of the floating bearing in a housing of the steering gear , wherein the outer ring and the inner ring form an annular gap between them , and wherein the outer ring and the inner ring are connected to one another by way of at least one flexible connecting part so as to be movable relative to one another in at least one radial direction , wherein the outer ring and/or the inner ring form(s) , within the connecting part , at least one projection which projects into the annular gap such that the spacing between outer ring and inner ring is smaller in the region of the projection then in the remaining section of the annular gap.2. The floating bearing according to claim 1 , wherein the projection has a curved surface profile.3. The floating bearing as claimed in claim 1 , wherein the outer ring each form a projection claim 1 , said projections being situated radially opposite one another.4. The floating bearing as ...

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Номер записи: 87
14-02-2019 дата публикации

TURBINE ENGINE WITH BEARING ASSEMBLY

Номер: US20190048743A1
Автор: Tulej Piotr
Принадлежит:

An apparatus and method for a bearing assembly including a frame, an inner race circumscribing a shaft for a turbine engine, a bearing movable about the inner ring, an outer race circumscribing the at least one rolling element, a spring assembly comprising an inner ring circumscribing the at least one cage, and an outer ring mounted to the frame, and a set of circumferentially arranged spring fingers extending between the inner ring and the outer ring. 1. A turbine engine comprising:a frame defining a central aperture;a shaft extending in a fore to aft direction through the central aperture;a bearing assembly rotationally supporting the shaft;a spring assembly comprising a first and second set of spring fingers having differing stiffness where the second set of spring fingers has an inner ring circumscribing the bearing assembly and an outer ring mounted to the frame, and a set of circumferentially arranged spring fingers extending between the inner ring and the outer ring; anda damper circumscribing the inner ring and separating the inner ring from the frame.2. The turbine engine of wherein the bearing assembly includes at least one inner race circumscribing the shaft claim 1 , at least one rolling element movable about the inner race claim 1 , and at least one outer race circumscribing the at least one rolling element.3. The turbine engine of wherein the inner ring is a first inner ring and a second inner ring and the second inner ring is the at least one outer race of the bearing assembly.4. The turbine engine of wherein the damper comprises a damper housing integral with the first inner ring.5. The turbine engine of wherein the first and second set of spring fingers comprise a plurality of spring fingers circumferentially and alternatingly arranged with respect to each other.6. The turbine engine of wherein the first set of spring fingers has a greater stiffness than the second set of spring fingers.7. The turbine engine of wherein a gap is formed between the ...

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Номер записи: 88
14-02-2019 дата публикации

BEARING DEVICE AND EXHAUST TURBINE TURBOCHARGER

Номер: US20190048933A1
Автор: AKIYAMA Yoji, DAMMOTO Yosuke, Ishizaki Tatsuya, KOJIMA Yuya
Принадлежит: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

The present invention improves the drainability of lubricating oil. The present invention comprises: a rotating shaft (); a journal bearing that is provided to the rotating shaft () and rotationally supports the rotating shaft (); a bearing housing part that houses the journal bearing; and a drain oil space chamber () that acts as an oil drainage passage that communicates with the bearing housing part, is provided along the periphery of the rotating shaft (), and is formed to open downward. Within a region that is in and above a horizontal plane H that passes through the center of the rotating shaft (), the smallest cross-sectional area of the oil drainage passage in a radial-direction cross-section thereof is on the anterior side in the rotational direction of the rotating shaft () with respect to a vertical plane P that passes though the center (O) of the rotating shaft (), and the largest cross-sectional area of the oil drainage passage in the radial-direction cross-section is on the posterior side in the rotational direction of the rotating shaft () with respect to the vertical plane that passes through the center (O) of the rotating shaft (). 19.-. (canceled)10. A bearing device comprising:a rotating shaft;a journal bearing which is provided on the rotating shaft and rotatably supports the rotating shaft;a bearing accommodation portion in which the journal bearing is accommodated; andan oil discharge passage which is provided along a periphery of the rotating shaft on an outer peripheral portion of a boss portion of a turbine disk fixed to the rotating shaft and has an opened lower portion,wherein the journal bearing is rotatably supported by the bearing accommodation portion using a lubricating oil supplied to a portion between an outer peripheral surface of the journal bearing and an inner surface of the bearing accommodation portion and rotatably supports the rotating shaft by a lubricating oil supplied to a portion between an inner peripheral surface of the ...

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Номер записи: 89
14-02-2019 дата публикации

BALANCER DEVICE AND BALANCER DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20190048936A1
Автор: TODO Tamotsu
Принадлежит: Hitachi Automotive Systems, Ltd.

Provided is a balancer device in which friction loss between a driving shaft and a bearing can be reduced. The balancer device of the invention comprises an upper housing and a lower housing. The upper housing receives the upper half portion of a rolling bearing which rotatably supports the driving shaft. The balancer device includes a first member which biases the rolling bearing toward a bearing receiving portion. 1. A balancer device comprising:a driving shaft including a first balancer weight at one axial end and a driven rotor at an opposite axial end, rotation of a crankshaft being transmitted to the driven rotor through an endless transmission member;a driven shaft including a second balancer weight in a position opposite to the balancer weight of the driving shaft, the driven shaft being rotationally driven in an opposite direction to rotation of the driving shaft;bearings disposed at both ends of the balancer weights of the driving and driven shafts and configured to support the driving and driven shafts;an upper housing configured to accommodate the first and second balancer weights and support upper half portions of the bearings;a lower housing assembled with the upper housing and configured to support lower half portions of the bearings;a rolling hearing disposed adjacently to the driven rotor and configured to support the driving shaft;a bearing receiving portion formed in the upper housing and configured to support an upper half portion of the rolling bearing; anda retaining member fixed to the upper housing and configured to bias a lower half portion of the rolling bearing toward the bearing receiving portion.2. The balancer device according to claim 1 , whereinthe upper housing includes a communication aperture configured to bring an upper surface side of the upper housing and the bearing receiving portion located in a lower surface side of the upper housing into communication with each other.3. The balancer device according to claim 2 , whereinan ...

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Номер записи: 90
25-02-2016 дата публикации

FLEXIBLE SUPPORT STRUCTURE FOR A GEARED ARCHITECTURE GAS TURBINE ENGINE

Номер: US20160053635A1
Автор: Husband Jason, McCune Michael E.
Принадлежит:

A gas turbine engine according to an example of the present disclosure includes, among other things, a fan shaft configured to drive a fan, a support configured to support at least a portion of the fan shaft, the support defining a support transverse stiffness and a support lateral stiffness, a gear system coupled to the fan shaft, and a flexible support configured to at least partially support the gear system. The flexible support defines a flexible support transverse stiffness with respect to the support transverse stiffness and a flexible support lateral stiffness with respect to the support lateral stiffness. The input defines an input transverse stiffness with respect to the support transverse stiffness and an input lateral stiffness with respect to the support lateral stiffness. 1. A gas turbine engine , comprising:a fan shaft configured to drive a fan;a support configured to support at least a portion of the fan shaft, the support defining a support transverse stiffness and a support lateral stiffness;a gear system coupled to the fan shaft;a flexible support configured to at least partially support the gear system, the flexible support defining a flexible support transverse stiffness with respect to the support transverse stiffness and a flexible support lateral stiffness with respect to the support lateral stiffness; andan input to the gear system, the input defining an input transverse stiffness with respect to the support transverse stiffness and an input lateral stiffness with respect to the support lateral stiffness.2. The gas turbine engine as recited in claim 1 , wherein the support and the flexible support are mounted to a static structure.3. The gas turbine engine as recited in claim 2 , wherein the static structure is a front center body of the gas turbine engine.4. The gas turbine engine as recited in claim 1 , wherein the flexible support is mounted to a planet carrier of the gear system claim 1 , and the input is mounted to a sun gear of the gear ...

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Номер записи: 91
22-02-2018 дата публикации

Steering Column and Bearing Assembly

Номер: US20180050721A1
Автор: WAGNER Robert, Wellman Gary
Принадлежит: BRC Rubber & Plastics, Inc.

A vibration-free, rotatable, sealed support for a steering intermediate shaft, adapted to accommodate slight irregularities in the outside diameter of the intermediate shaft, with reduced complexity and cost of manufacture, and improved reliability, compared to bearing and seal assemblies known to the art, comprising a mounting flange, a sealing member, and a monolithic bearing. 1. A seal and bearing assembly for use in a vehicle firewall or front of dash panel , said assembly comprising:(a) a mounting flange, said mounting flange comprising a plurality of mounting holes and further comprising a second cavity passing through said mounting flange, said second cavity comprising a substantially annular contact surface;(b) a seal member disposed within said second cavity, said seal member comprising a first lip located at a first end, a second lip located at a second end, a generally convex outer surface connecting said first lip and said second lip; said seal member further comprising a first opening within said first end, a second opening within said second end, and a first channel connecting said first opening to said second opening; and(c) an annular bearing fitted within said first cavity, said bearing comprising a plurality of partial discontinuities and a longitudinal third channel; wherein(d) said outer surface of said seal member is in substantially sealed engagement with said contact surface, said seal member is retained within said second cavity by interference fit between said first lip, second lip, and mounting flange, and said bearing is disposed at least partially within said first channel and is further in substantially sealed engagement with said seal member.2. The seal and bearing assembly of claim 1 , wherein said bearing comprises a third lip.3. The seal and bearing assembly of claim 2 , wherein said third lip is substantially disposed against said first lip.4. The seal and bearing assembly of claim 3 , wherein said seal member and said bearing are ...

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Номер записи: 92
25-02-2016 дата публикации

BEARING FOR A ROTARY MACHINE

Номер: US20160053807A1
Автор: Maciver Ivor, Sears Kenneth John
Принадлежит:

A bearing for a rotary machine includes an inner sleeve providing a first bearing surface and an outer sleeve circumscribing the inner sleeve and providing a second bearing surface in opposing relation to the first bearing surface. The bearing includes at least one tolerance ring for retaining the inner sleeve on a rotor shaft of the rotary machine and another tolerance ring for retaining the outer sleeve on a stator of the rotary machine. 1. A bearing for a rotary machine , comprising:an inner sleeve providing a first bearing surface;an outer sleeve circumscribing the inner sleeve and providing a second bearing surface in opposing relation to the first bearing surface;at least one first tolerance ring for retaining the inner sleeve on a rotor shaft of the rotary machine; andat least one second tolerance ring for retaining the outer sleeve on a stator of the rotary machine.2. The bearing of claim 1 , further comprising a ring disposed on the outer sleeve.3. The bearing of claim 2 , wherein the outer sleeve comprises a circumferential recess formed therein claim 2 , and the ring is disposed in the recess.4. The bearing of claim 2 , wherein the ring comprises an elastomer ring.5. The bearing of claim 2 , wherein the second tolerance ring is mounted in contact with the ring.6. The bearing of claim 2 , further comprising a fluid path formed in the outer sleeve for circulating fluid around the ring.7. The bearing of claim 6 , wherein the fluid path comprises a spiral groove.8. The bearing of claim 1 , further comprising at least one ring proximate to the at least one first tolerance ring for damping a mounting of the at least one first tolerance ring.9. The bearing of claim 8 , wherein the at least one ring comprises an elastomer ring.10. The bearing of claim 1 , comprising a pair of first tolerance rings for retaining the inner sleeve on the rotor shaft.11. The bearing of claim 10 , further comprising a pair of rings claim 10 , each ring being proximate one of the first ...

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Номер записи: 93
23-02-2017 дата публикации

DEVICE FOR APPLYING AN AUXILIARY FORCE IN A MOTOR VEHICLE STEERING SYSTEM

Номер: US20170050667A1
Автор: Strobel Joseph, Zogg Reto
Принадлежит:

An apparatus for applying an auxiliary force in a motor vehicle steering unit may include a driving worm that is connectable to an electric motor and applies an auxiliary force on the motor vehicle steering unit through a worm wheel. The driving worm may be housed in a roller bearing. The roller bearing can be pivoted about a pivoting axis defined by a pivot element outside the roller bearing. 110.-. (canceled)11. An apparatus for exerting an auxiliary force in a motor vehicle steering unit , the apparatus comprising:a worm wheel; anda driving worm that is connectable to an electric motor and permits an auxiliary force to be applied to a motor vehicle steering unit through the worm wheel, wherein the driving worm is stored in a roller bearing pivotable about a bearing axis, wherein the roller bearing is pivotable about a pivoting axis defined by a pivot element positioned outside the roller bearing.12. The apparatus of further comprising an outer sleeve having two bearing noses opposite one another and extending radially inwards or outwards that from a pivot element claim 11 , wherein the roller bearing is housed in the outer sleeve.13. The apparatus of wherein the two bearing noses support the roller bearing by an outer ring of the roller bearing.14. The apparatus of wherein an inner sleeve is disposed concentrically between the outer sleeve and the roller bearing claim 12 , with the inner sleeve being pivotable relative to the outer sleeve and supported by the pivot element.15. The apparatus of further comprising an elastomeric element disposed between the roller bearing and the outer sleeve.16. The apparatus of further comprising an elastomeric element vulcanized onto the roller bearing.17. The apparatus of further comprising an elastomeric element disposed within the outer sleeve.18. The apparatus of further comprising an elastomeric element vulcanized onto the roller bearing and disposed within the outer sleeve.19. The apparatus of wherein the outer sleeve has ...

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Номер записи: 94
25-02-2021 дата публикации

RADIAL FOIL BEARING

Номер: US20210054875A1
Автор: Omori Naomichi
Принадлежит: IHI CORPORATION

A radial foil bearing includes a bearing housing which has an insertion hole through which a shaft is inserted, a back foil which is disposed on an inner peripheral surface of the insertion hole, and an engagement member which includes a first part and a second part, the first part being disposed to overlap the back foil in a radial direction of the insertion hole and engaged with the back foil, and the second part being attached to the bearing housing, in which the first part has an engagement groove which extends to an end edge of the first part in an axial direction of the insertion hole, and the back foil is disposed in the engagement groove. 1. A radial foil bearing comprising:a bearing housing which has an insertion hole through which a shaft is inserted;a back foil which is disposed on an inner peripheral surface of the insertion hole; andan engagement member which includes a first part and a second part, the first part being disposed to overlap the back foil in a radial direction of the insertion hole and engaged with the back foil, and the second part being attached to the bearing housing,wherein the first part has an engagement groove which extends to an end edge of the first part in an axial direction of the insertion hole, andthe back foil is disposed in the engagement groove.2. The radial foil bearing according to claim 1 ,wherein the back foil has crest portions and trough portions which are alternately formed in a circumferential direction of the inner peripheral surface of the insertion hole, andthe first part has a first claw portion and a second claw portion provided on opposing sides of the engagement groove with respect to each other, the first claw portion being disposed inside the trough portion in the radial direction, and the second claw portion being disposed outside the crest portion in the radial direction.3. The radial foil bearing according to claim 2 , further comprisingan intermediate foil which is supported by the back foil and has a ...

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Номер записи: 95
25-02-2021 дата публикации

Squeeze Film Damper Acoustic Isolation

Номер: US20210054880A1
Автор: Daniel A. SZKRYBALO, Daniel L. Gysling, Gregory E. Reinhardt
Принадлежит: Raytheon Technologies Corp

A machine has a first member; a second member; a third member; a bearing having an inner race mounted to the second member and an outer race mounted to the third member; a damper chamber between the first member and the third member; a fluid outlet in the first member to the damper chamber; a fluid supply flowpath to the fluid outlet; and an unvented chamber open to and locally above the fluid supply flowpath.

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Номер записи: 96
26-02-2015 дата публикации

CONVERTER COLLAR BEARING FOR A TORQUE CONVERTER

Номер: US20150055908A1
Автор: BEECK Frank, PABST Alexander
Принадлежит:

A bearing position for a torque converter, wherein a pump impeller is connected to a converter neck, and the pump impeller is rotatably mounted on the bearing position by at least one roller bearing in a housing, wherein the roller bearing comprises an outer rolling raceway, assigned to the converter neck and facing radially outwards, and an inner rolling raceway, assigned to the housing and facing radially inwards, and rollers disposed radially between the rolling raceways, wherein the bearing position comprises at least one radially elastically designed section of a sleeve of the roller bearing, where the sleeve is provided with the inner rolling raceway, wherein the section, enclosing an elastic convex raceway curvature, is resiliently prestressed in the radial direction against at least a first roller of the rollers, the first roller supported on the outer rolling raceway, and supported in the opposite radial direction on the housing. 11254232164619318417123166182331171719434172317. A bearing position () for rotatably mounting a pump impeller () of a torque converter () in a housing () , wherein the pump impeller () is connected to a converter neck () , by way of which the pump impeller () is rotatably mounted on the bearing position () by means of at least one roller bearing () in the housing () , wherein the roller bearing () comprises an outer rolling raceway () , which is assigned to the converter neck () and which faces radially outwards , and an inner rolling raceway () , which is assigned to the housing () and which faces radially inwards , and rollers () , which are disposed radially between the rolling raceways , wherein the bearing position () comprises at least one radially elastically designed section () of a sleeve () of the roller bearing () , where said sleeve is provided with the inner rolling raceway () , wherein the section () , enclosing an elastic convex raceway curvature () , is resiliently prestressed in the radial direction against at ...

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Номер записи: 97
22-02-2018 дата публикации

HIGH LOAD CAPACITY HYBRID FOIL BEARING

Номер: US20180051745A1
Автор: Himmelmann Richard A.
Принадлежит:

A bearing includes a bearing sleeve with a first portion and a second portion adjacent to the first portion. A bump foil extends along an inner face of the first portion of the bearing sleeve and a metal mesh extends along an inner face of the second portion of the bearing sleeve. A top foil extends along an inner face of the bump foil of the first portion and the metal mesh of the second portion. 1. A bearing comprising:a bearing sleeve with a first portion and a second portion adjacent to the first portion;a bump foil extending along an inner face of the first portion of the bearing sleeve;a metal mesh extending along an inner face of the second portion of the bearing sleeve; anda top foil extending along an inner face of the bump foil of the first portion and the metal mesh of the second portion.2. The bearing of claim 1 , and further comprising:a third portion in the bearing sleeve adjacent to the second portion; anda bump foil extending along an inner face of the third portion of the bearing sleeve;wherein the top foil extends along an inner face of the bump foil of the third portion.3. The bearing of claim 2 , wherein the bearing sleeve has a first wall thickness at the first portion and the third portion that is greater than a second wall thickness at the second portion.4. The bearing of claim 1 , and further comprising:a third portion in the bearing sleeve adjacent to the first portion; anda metal mesh extending along an inner face of the third portion of the bearing sleeve;wherein the top foil extends along an inner face of the metal mesh of the third portion.5. The bearing of claim 4 , wherein the bearing sleeve has a first wall thickness at the first portion and the third portion that is lesser than a second wall thickness at the second portion.6. The bearing of claim 1 , wherein the bump foil has a first section having corrugations with a first size and a second section having corrugations with a second size claim 1 , wherein the first size is larger ...

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Номер записи: 98
23-02-2017 дата публикации

Hybrid Foil Bearings Having Integrated Gas Flow Paths

Номер: US20170051788A1
Автор: Kim Daejong
Принадлежит: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM

In one embodiment, a hybrid foil bearing includes a bearing sleeve, multiple inner foils provided within the sleeve, the foils having gas outlets from which pressurized gas can be injected into an interior of the bearing, and integrated gas flow paths that radially extend through the bearing sleeve and deliver the gas to the gas outlets. 1. A hybrid foil bearing comprising:a bearing sleeve;multiple inner foils provided within the sleeve, the foils having gas outlets from which pressurized gas can be injected into an interior of the bearing; andintegrated gas flow paths that radially extend through the bearing sleeve and deliver the gas to the gas outlets.2. The bearing of claim 1 , wherein the bearing sleeve comprises multiple gas inlets through which the pressurized gas can be delivered to the gas flow paths.3. The bearing of claim 2 , further comprising gas flow plugs provided in the gas inlets of the bearing sleeve through which the pressurized gas can flow.4. The bearing of claim 3 , further comprising flexible bellows connected to the gas flow plugs through which the pressurized gas can flow claim 3 , the bellows each comprising corrugations.5. The bearing of claim 4 , further comprising gas distribution members connected to the bellows and the foils through which the pressurized gas can flow to the gas outlets of the foils claim 4 , wherein each foil comprises multiple gas outlets and each gas distribution member distributes the gas to the multiple gas outlets of one foil.6. The bearing of claim 5 , wherein the gas distribution members are elongated and extend along a longitudinal direction of the bearing claim 5 , the gas distribution members each comprising an elongated inner channel through which the pressurized gas can flow.7. The bearing of claim 6 , wherein the bearing sleeve comprises multiple elongated channels that extend along the longitudinal direction of the bearing in which the gas distribution members are received.8. The bearing of claim 3 , ...

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Номер записи: 99
23-02-2017 дата публикации

MULTI-PIECE DRIVESHAFT ASSEMBLY

Номер: US20170051793A1
Автор: Eversole Philip A.
Принадлежит:

A multi-piece driveshaft assembly () includes a driveshaft assembly (). The driveshaft assembly comprises a yoke () provided at an end thereof. A universal joint () is attached to the yoke. A coupling shaft assembly () includes a tube yoke () and tube (). The tube yoke is attached near an end thereof to the universal joint and at or near an opposite end thereof to the tube. A rotational support member () is attached to and surrounds a portion of an outer surface of the tube yoke. 120-. (canceled)21. A multi-piece driveshaft assembly , comprising:a driveshaft assembly which comprises a yoke provided at an end thereof;a universal joint is attached to the yoke;a coupling shaft assembly comprises a tube yoke and tube, wherein the yoke comprises a pair of spaced apart lug ears, each ear defining coaxial openings wherein the ears are separated by a body portion with which each lug ear is unitarily formed, said body portion comprises a unitary base with a U-shaped cross section and an annular wall axially extending from the base opposite said ears, wherein said wall comprises a tube seat portion, wherein said tube is directly attached to the tube seat portion by a weld; anda rotational support member is attached directly to and surrounds a portion of an outer surface of the tube yoke, said rotational support member attached to said tube yoke between the tube and the universal joint.22. The multi-piece driveshaft assembly of claim 21 , further comprising a support assembly which is attached to the rotational support member.23. The multi-piece driveshaft assembly of claim 21 , wherein the universal joint is of the cardan type.24. The multi-piece driveshaft assembly of claim 21 , wherein the tube comprises an outer diameter that is substantially constant and an inner diameter that is substantially constant.25. The multi-piece driveshaft assembly of claim 21 , wherein the tube comprises an outer diameter that has two or more portions which are of a different size and an inner ...

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Номер записи: 100