ПРОТИВОУДАРНОЕ УСТРОЙСТВО

Изобретение относится к области машиностроения. Противоударное устройство содержит блок (1) цилиндров, поршень (2), две торцевые крышки (3), шток (4) поршня, соединительный цилиндр (5) и два соединительных элемента (6). Соединительный цилиндр (5) соединен с одним концом блока (1) цилиндров. Торцевые крышки (3) расположены на обоих концах блока (1) цилиндров. Соединительные элементы (6) расположены на одном конце штока (4) на расстоянии от соединительного цилиндра (5) и на одном конце соединительного цилиндра (5) на расстоянии от блока (1) цилиндров. Поршень (2) снабжен запорным (7) и демпфирующим (8) клапанами, которые расположены напротив друг друга на двух сторонах штока (4). Когда запорный клапан (7) находится в открытом состоянии, демпфирующий клапан (8) находится в закрытом состоянии. Когда запорный клапан (7) находится в закрытом состоянии, демпфирующий клапан (8) находится в открытом состоянии. Запорный клапан (7) находится в открытом состоянии при низкой скоростной нагрузке и в ...

УСТРОЙСТВО ПОДВЕСКИ

Изобретение относится к устройству подвески транспортного средства. Устройство подвески содержит амортизатор и механизм регулировки рабочей силы, предназначенный для регулировки или наклона автомобиля в поперечном направлении, или наклона автомобиля в продольном направлении. Амортизатор включает в себя цилиндр с рабочей жидкостью, поршень, делящий внутреннее пространство цилиндра на две камеры, шток поршня, канал, соединяющий две камеры, расположенный в канале механизм создания демпфирующей силы торможения течения рабочей жидкости при перемещении поршня, и механизм регулирования демпфирующей силы в зависимости от положения штока поршня, Механизм регулирования демпфирующей силы выполнен с возможностью обеспечения одной из следующих характеристик в диапазоне, когда шток поршня выдвинут из цилиндра за пределы первого заданного положения, демпфирующая сила зоны выдвижения находится в мягком режиме, а демпфирующая сила зоны сжатия находится в жестком режиме, в диапазоне, когда шток поршня втянут ...

ПРОТИВОУДАРНОЕ УСТРОЙСТВО

Self-pumping telescopic stent for vehicle - incorporates valve to give internal level control

The self-pumping hydropneumatic telescopic strut is for a motor vehicle. The working chamber (18) is connected to the high pressure chamber (11) via a flow connection (25) with a load-dependent adjustable valve (20). The valve is arranged in the cover (5) of the unit end and the flow connection is a hole in the working cylinder (1). USE/ADVANTAGE - Telescopic strut with internal level control which allows the damping force to be adjusted in relation to the loading of the vehicle.

Einrichtung und Verfahren zur Führung eines Rades eines Fahrzeugs

Einrichtung zur Führung eines Rades eines Fahrzeugs, welche mit einer ersten Dämpfungseinrichtung (16) und einer zweiten Dämpfungseinrichtung (30) funktional gekoppelt ist, wobei die zweite Dämpfungseinrichtung (30) zur Erzeugung einer zur Radkraft zwischen 0 und 90 Grad phasenverschobenen zweiten Dämpfungskraft ausgebildet ist, dadurch gekennzeichnet, dass die erste Dämpfungseinrichtung (16) zur Beschränkung einer weitgehend periodischen Radkraftschwankungsamplitude mittels Erzeugung einer zur Radkraft zwischen 90 und 270 Grad phasenverschobenen ersten Dämpfungskraft ausgebildet ist, deren Schwankungsperiode weitgehend einem n-fachen der Periode der Radkraftschwankung entspricht.

Systeme und Verfahren zum Dämpfen von Photovoltaikmodulgruppierungen

Ein Dämpfer 100 schließt ein Gehäuse 140 mit proximalen und distalen Enden 170, 180, einen ersten Befestigungspunkt 210 in der Nähe des distalen Endes 180 des Gehäuses 140, ein Gestänge 120 mit proximalen und distalen Enden 110, 130, das wenigstens teilweise innerhalb des Gehäuses 140 angeordnet ist und bezogen auf das Gehäuse 140 zwischen einer ausgefahrenen Stellung und einer eingezogenen Stellung bewegbar ist, einen zweiten Befestigungspunkt 220 in der Nähe des proximalen Endes 110 des Gestänges 140, einen Kolben 150, der innerhalb des Gehäuses 140 in der Nähe des distalen Endes 130 des Gestänges 120 mit dem Gestänge 120 zusammengefügt ist, wobei der Kolben 150 eine Umgehungsrille 340 mit einem darin umgrenzten Strömungsbereich, um Fluid 410 zu ermöglichen, von einer ersten Seite des Kolbens 150 zu einer gegenüberliegenden Seite des Kolbens 150 zu strömen, und eine erste Scheibe 320, die in der Nähe eines ersten Endes des Kolbens angeordnet ist und wenigstens teilweise den Strömungsbereich ...

Ventilanordnung an hydraulischen Schwingungsdaempfern und Stabilisatoren fuer Fahrzeuge

Einrichtung und Benutzung eines Stossdämpfers

Schwingungsdämpfer

Schwingungsdämpfer, umfassend einen Zylinder, in dem eine Kolbenstange axial beweglich geführt ist, wobei an der Kolbenstange ein erster Kolben ortsfest und ein zweiter, mit mindestens einer von einer Federanordnung vorgespannten Ventilscheibe bestückter Kolben gegen eine Federkraft von mindestens einer Stützfeder axial verschiebbar gelagert ist, wobei die Federanordnung mindestens einen Federteller aufweist, an dem sich die Federanordnung abstützt, wobei der zweite Kolben zusammen mit einer Fixierhülse und dem mindestens einen Federteller für die Federanordnung eine Baueinheit bilden, wobei der mindestens eine Federteller zur Einstellung der Vorspannung der Federanordnung axial verschiebbar zur Fixierhülse gelagert und in der gewünschten Axialposition fixierbar ist.

Vibration damper, has rate dependant closing damping valve connected upstream in relation to flow of damping unit to adjustable damping valve, where closing valve moves based on flow rate of damping medium

The damper has a piston rod, which is arranged in a cylinder together with a piston in an axially movable manner. Rate dependant closing damping valve (31) is connected upstream in relation to the flow of a damping unit to an adjustable damping valve (19) and a pressure limiting valve (37) to both the valves in a row. The damping valve (31) moves in dependence on the flow rate of a damping medium in a closing direction.

Piston/cylinder aggregate unit with dampening unit for hydraulic system

A piston/cylinder aggregate unit has an adjustable dampener consisting of a dampening piston attached to a piston rod. The piston sub-divides the chamber into two, filled with dampening fluid. The two chambers are linked via a base valve, compensation chamber, and adjustable dampening valve. The base valve back-flow prevention valve linked to the lower chamber is hydraulically pressurised from the upper chamber.

Improvements in and relating to telescopic hydraulic shock-absorbers

... 768,903. Hydraulic shock absorbers. ALLINQUANT, F. S. April 12, 1955 [April 16, 1954; Jan. 13, 1955], No. 10505/55. Class 108(3). A shock absorber piston has a constricted annular passage-way 25, Fig. 1, defined between two co-axial axially movable flanges 19, 21, subjected on their opposite surfaces to the pressures prevailing on corresponding sides of the piston and urged elastically into stable positions (shown) defined by stops 9, 13, respectively, the flanges 19, 21, being movable away from the stable position in opposite respective directions so as to produce an increase in the cross-section of the annular passage-way. The edges of the flanges 19, 21 are chamfered at 28 and 29 in order to increase the rate at which the increase in cross-section of the passage-way occurs. The flanges, 19, 21, are carried by members slidably mounted within the main piston body 7, 10. In the construction shown in Fig. 5, the members carrying the flanges 19, 21, form the actual piston body itself. The ...

HYDROPNEUMATIC VEHICLE SUSPENSION

Shock absorber damping valve

A shock absorber 10 comprises an outer tube 12; an inner tube 14; a rod guide 22; a compensation valve assembly 20; a piston assembly 16 dividing the inner tube into a rebound chamber 36 and a compression chamber 38; a compensation chamber 40 formed between the inner tube and the outer tube; and a damping valve 50 covering an aperture through the inner tube from the compression chamber, the damping valve being actuable by differential pressure above a predetermined level to allow flow of fluid in one direction only from the compression chamber through the aperture to the compensation chamber. The valve may comprise an elastomeric body 52 surrounding a resilient band having pips to space it from the tube 14, and resilient band springs 56 allowing flexing of the body away from the tube 14 when fluid pressure is sufficiently great. Similar valves 50' may control flow between chambers 36 and 40, in the valve assembly 20, and to control flow through the piston rod 18 between chambers 36 and ...

Electronically controlled frequency dependent damping

Electronically controlled frequency dependent damping

A gas damper includes a gas pressurized working chamber and valving within the piston to control flow of the gas through the piston. A system is in communication with the working chamber to control the gas pressure within the working chamber in order to control the damping characteristics of the damper. An electronic control unit is utilized to control the opening and closing of the valving within the piston to also control the damping characteristics of the damper.

Compensated rod for a frequency dependent damper shock absorber

A frequency-dependent damper incorporates a compensated piston assembly to reduce the amount of static push-out force. The piston rod is a hollow rod with a compensator being disposed within the hollow portion of the piston rod. The piston rod is a hollow rod with a compensator being disposed within the hollow portion of the piston rod. The compensator is attached to the pressure tube of the damper such that the compensator slides within the piston rod during stroking of the shock absorber. The compensated piston assembly reduces the difference in cross-sectional area between the upper and lower surfaces of the piston.

Hydro-pneumatic tensioner with stiffness altering secondary accumulator

A tensioner comprises a primary accumulator (52, 128) with a fluid at a pressure P1 and a secondary accumulator (98, 121) with a fluid at a pressue P2, each separated by a fluid separator such as a piston (92), a bladder (figures 9 and 14) or a valve (figures 10 and 15). Retraction of a piston (82) into the primary accumulator increases its pressure P1 until it is greater than the pressure P2 in the secondary accumulator when the fluid separator (92) is activated. The secondary accumulator may be within a piston rod (32) of the piston (82) of the primary accumulator, or it may be externally housed (figures 6-17).

Hydraulic damper

A hydraulic dashpot has a high pressure space and a low pressure space into which the hydraulic fluid is forced through a spring loaded and adjustable spill valve when the dashpot is acted upon by a blow to be damped. The low pressure space is divided up into two sections on the two sides of the high pressure space and axially in line with it. The spill valve is fixed in the cylinder of the dashpot rather than being mounted on or in the piston. There is a pipe joining the two sections of the low pressure space together and running through the high pressure space and through the spill valve. The check valve for letting the piston be returned into its starting position is formed by a ring on the piston.

Improvements in devices for regulating the damping in pneumatic or hydro-pneumatic suspension systems for vehicles

... 886,459. Electrical measuring systems. TATRA, NARODNI PODNIK. July 5, 1960 [July 10, 1959], No. 23534/60. Drawings to Specification. Class 40 (1). [Also in Group XXXII] A system for regulating the degree of damping in a road vehicle comprises a carbon stack resistor, responsive both to the load and roughness of the road by using a non-return valve and a bleed hole between the suspension system and the resistor pressure chamber, connected to an electromagnetic device which regulates the damping.

Improvements in fluid-damped shock absorbers

... 902,901. Hydraulic shock absorbers. DOWTY ROTOL Ltd. June 12, 1959 [June 13, 1958], No. 19077/58. Class 108(3). A hydraulic shock absorber comprises two tubular telescoping members 16 and 11, the latter having a cylindrical member 29 containing a spring-loaded hollow piston valve 48 the interior of which communicates through constant restriction 64 and openings 67, 68 with the lower chamber 74 and through apertures 43 and 47 with the upper chamber. In operation when the load on valve face 61 exceeds a predetermined value the valve is lifted off its seat and lands 49, 50, 51 uncover ports 75, 76, 77 which are progressively covered again to increase the resistance to motion by annular member 28 as the piston head 22 approaches the end of its travel. Slight relative axial movement between the piston head 22 and annular member 28 allows the flange 25 to close the orifices 24 on the compression stroke but to open them on recoil. The plate valve 42 on the other hand allows liquid flow during ...

Gyroscopic stabiliser

A gyroscopic stabiliser for stabilising motion of an object, for example rolling or pitching motion of a marine vessel. The gyroscopic stabiliser includes a rotary damper for damping precession of the gyroscopic stabiliser, wherein the rotary damper includes a constant flow valve that provides a constant flow of damping fluid in the rotary damper for different torques applied to the vane of the rotary damper. The constant flow valve comprises a fixed orifice and a variable orifice in series in the flow passage, wherein a change in a pressure differential across the fixed orifice causes a change in a size of the variable orifice. A biasing element may apply a biasing force to a displaceable member which changes the size of the variable orifice. The fixed orifice may be located upstream of the variable orifice.

THROTTLE CONTROL ABSORBER UNIT

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

ADJUSTABLE ABSORBING VALVE

Furniture damper

Möbeldämpfer (16) zur Dämpfung einer Bewegung eines bewegbar gelagerten Möbelteiles (3), umfassend: − ein Gehäuse (19), − zumindest eine im Gehäuse (19) ausgebildete Fluidkammer (19a) mit einer Hockdruckseite (HP) und mit einer Niederdruckseite (LP), − ein in der Fluidkammer (19a) angeordnetes Dämpfungsfluid, − zumindest einen Kolben (20) mit wenigstens einer Überlastöffnung (30), wobei der Kolben (20) in der Fluidkammer (19a) zur Ausführung eines Dämpfungshubes verschiebbar angeordnet ist und dass die Hochdruckseite (HP) und die Niederdruckseite (LP) der Fluidkammer (19a) durch den Kolben (20) voneinander getrennt sind, − eine im Kolben (20) angeordnete Überlastsicherung (25) mit einem von einem Kraftspeicher (20a) beaufschlagten Verschlusselement (20b), wobei das Verschlusselement (20b) unterhalb eines vorgegebenen Schwellwertes einer Druckbeaufschlagung auf den Kolben (20) die wenigstens eine Überlastöffnung (30) des Kolbens (20) verschließt und oberhalb des vorgegebenen Schwellwertes ...

SHOCK-MOUNT

FLUIDDÄMPFER

SHOCK ABSORBER WITH CHANGEABLE ABSORPTION CHARACTERISTIC.

HANGING UP AND ABSORPTION DEVICE WITH TWO HANGING UP AND ABSORPTION UNITS

SHOCK ABSORBER WITH PERIODICAL ABSORPTION

Hydraulic speed limiter

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

THROTTLE CONTROL ABSORBER UNIT

THROTTLE CONTROL ABSORBER UNIT

THROTTLE CONTROL ABSORBER UNIT

THROTTLE CONTROL ABSORBER UNIT

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

THROTTLE CONTROL ABSORBER UNIT

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

THROTTLE CONTROL ABSORBER UNIT

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

THROTTLE CONTROL ABSORBER UNIT

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

THROTTLE CONTROL ABSORBER UNIT

THROTTLE CONTROL ABSORBER UNIT

THROTTLE CONTROL ABSORBER UNIT

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

THROTTLE CONTROL ABSORBER UNIT

PROCEDURE FOR THE REGULATION OF THE HYDRAULIC RESISTANCE OF A SHOCK ABSORBER DURING ITS ENTERPRISE

Smart Damping System

HYDRAULIC DAMPERS WITH PRESSURE REGULATED CONTROL VALVE AND SECONDARY PISTON

Damper, in particular for motor vehicle

Tilt control apparatus for vehicles

QUICK RESPONSE HYDRAULIC SHOCK SUPPRESSOR FOR PIPING SYSTEMS

HYDRAULIC VALVE FOR DAMPENING PRESSURE SPIKES, AND ASSOCIATED SYSTEMS AND METHODS

Hydraulic valves for dampening pressure spikes and associated methods are disclosed herein. In one embodiment, a hydraulic valve for dampening pressure spikes includes a valve body, a poppet at least partially inside the valve body, and a pilot piston at least partially inside the valve body and away from the poppet. The pilot piston contacts the poppet in response to a pressure spike.

SNOWMOBILE

This specification relates to a snowmobile. Each of the right suspension and the left suspension includes a damper capable of expanding and contracting according to the vertical movement of the lower arm and a spring that exerts spring force in the expansion/contraction direction of the damper. The cylinder of the right damper and the cylinder of the left damper are connected to each other through a hydraulic fluid channel so that the hydraulic fluid flows between the cylinder of the right damper and the cylinder of the left damper. This snowmobile can reduce the difference in contact pressure on snow surface between the left ski and the right ski, when the vehicle turns.

LOWER-SIDE SPRING-RECEIVING MEMBER

This lower-side spring-receiving member (36) receives, at the lower side, a suspension spring (18) of a suspension device (10), said suspension spring (18) having a shape provided with a rising section (T). The lower-side spring-receiving member (36) is provided with: a base end part (ST) which has a partially annular shape, is provided at one end side, and has an end of the suspension spring (18) disposed therebetween; a slope part (SL) which is provided at the other end side, and has a thickness in a cross-sectional view which changes so as to follow the shape of the rising section (T) of the suspension spring (18); and a holding part (HL) which is provided between the base end part (ST) and the slope part (SL), and holds the suspension spring (18). A thinned section (Nk) is formed in the bottom-surface side of the slope part (SL). The thinned section (Nk) is provided with a ridge part (Rd) which is formed into a substantial chevron shape in a cross-sectional view of the inside thereof ...

DAMPING VALVE

A damping valve having a partition for separating one chamber and another chamber, a valve seat formed on an end face of the partition facing one chamber or the other chamber, and a leaf valve, an external peripheral end part of which seats on and separates from the valve seat, wherein the leaf valve has a plurality of orifices for allowing a working fluid to pass through in the external peripheral end part, and the plurality of orifices are concentrated in an arbitrary region in the circumferential direction in the external peripheral end part of the leaf valve.

Method and Apparatus for Controlling Railway Truck Hunting and a Railway Car Body Supported Thereby

METHOD AND APPARATUS FOR CONTROLLING RAILWAY TRUCK HUNTING AND A RAILWAY CAR BODY SUPPORTED THEREBY

A method and apparatus for controlling relative movement such as rotary movement between a railway truck and a car body supported thereby to control truck hunting through application of reaction forces resisting such rotary movement which are effective primarily to resist higher velocity relative rotational movements.

FLOW SENSITIVE, ACCELERATION SENSITIVE SHOCK ABSORBER

An acceleration sensitive shock absorber has a tubular housing and a piston assembly in the housing (11) dividing the housing into an upper chamber (13) and a lower chamber (12). The piston is connected to the wheel of a vehicle and the housing is connected to the chassis of the vehicle. Fluid can pass between the upper and lower chamber to the upper chamber upon downward acceleration of the wheel. A movable inertia valve (46) in the piston assembly opens the first port when acceleration of the wheel of the vehicle is greater than a predetermined magnitude for increasing flow between the chambers. In addition, there is a first restricted flow path (48) downstream from the first port for creating hydraulic pressure which biases the inertia valve in an open position in response to fluid flow between the chambers. There is a second port (43) or passage for providing fluid flow from the upper chamber to the lower chamber. A second restricted flow path upstream from the second which provides ...

TILT CONTROL APPARATUS FOR VEHICLES

In a vehicle having a transverse axle (17) and a body (11), and a shock absorber (15) mounted between the axle (17) and the body (11) to absorb shoc k from vertical movement of the axle (17) and prevent shock from being transmitted completely to the body (11) of the vehicle, the improvement disclosed involves an apparatus (12) for sensing tilt of the vehicle in combination with a separate hydraulic system (39, 40, 33) to prevent further tilt of the vehicle beyond a predetermined point sensed by the sensing unit.

Dispositif amortisseur pour véhicule de chemin de fer

Amortisseur hydraulique

Dispositif amortisseur pour véhicule de chemin de fer

Flüssigkeitsstossdämpfer an Fahrzeugen, insbesondere Kraftfahrzeugen

Amortisseur hydraulique pour un tampon de véhicule ferroviaire

Ski binding

СПОСОБ РЕГУЛИРОВАНИЯ ГИДРАВЛИЧЕСКОГО СОПРОТИВЛЕНИЯ АМОРТИЗАТОРА В ПРОЦЕССЕ ЕГО РАБОТЫ

Изобретение относится к транспортному машиностроению, в частности к амортизирующим устройствам подвески, и может быть использовано в передних и задних амортизаторах автомобилей и другой техники. Предлагаемое техническое решение направлено на повышение эксплуатационной надежности амортизатора, устойчивости и комфортности автомобиля при движении в сложных дорожных условиях за счёт нового способа обеспечения регулирования гидравлического сопротивления и следовательно жесткости амортизатора в процессе его работы при различных дорожных условиях и в зависимости от загрузки автомобиля.

Has one or a plurality of micro-valve three-speed adjustable damper

Astatic valve for pneumatic shock absorber

DISPOSITIF AMORTISSEUR VARIABLE AUTOMATIQUE

LA PRESENTE INVENTION A POUR OBJET UN DISPOSITIF AMORTISSEUR VARIABLE POUR SUSPENSION DE VEHICULE AUTOMOBILE COMPORTANT DEUX AMORTISSEURS 1 ET 14 MONTES EN SERIE. SELON L'INVENTION, CE DISPOSITIF COMPORTE UN CIRCUIT DE DERIVATION 23 QUI EST MONTE EN PARALLELE AVEC L'UN 1 DES AMORTISSEURS ET SUR LEQUEL EST INTERPOSE UN CLAPET 21 SOUMIS A L'ACTION DE MOYENS ELASTIQUES 22.

Hydraulic damper for railway plugs of vehicles

Anti-dive shock-absorber for vehicle - contains fluid chamber linked to hydraulic brake circuit to pass extra fluid to main chamber

ELASTIC ATTACHMENT

HYDRAULIC SHOCK ABSORBER FOR MOTOR VEHICLE SUSPENSION

AMORTISSEUR D'OSCILLATIONS

CET AMORTISSEUR EST DU TYPE DE CEUX QUI COMPORTENT UN CYLINDRE REMPLI D'UN FLUIDE, UN PISTON, QUI DIVISE L'ESPACE INTERIEUR DU CYLINDRE EN DEUX CHAMBRES DE TRAVAIL, UNE TIGE LIEE A CE PISTON, QUI SORT DU CYLINDRE A TRAVERS UN SYSTEME DE GUIDAGE ET D'ETANCHEITE ET UNE VOIE DE COMMUNICATION ENTRE LES CHAMBRES, AVEC, DANS CETTE VOIE, UN PASSAGE ETRANGLE DEFINI ENTRE DEUX FACES MOBILES L'UNE RELATIVEMENT A L'AUTRE, LA POSITION RELATIVE DE CES DEUX FACES, QUI DETERMINE LA SECTION DU PASSAGE ETRANGLE, ETANT FONCTION DE L'ETAT DU MOUVEMENT DE LA TIGE DE PISTON RELATIVEMENT AU CYLINDRE. DANS L'AMORTISSEUR SELON L'INVENTION, LE PISTON 5 EST MONTE SUR LA TIGE DE PISTON 2 DE FACON A POUVOIR SE DEPLACER LE LONG DE CETTE DERNIERE CONTRE UNE FORCE DE RAPPEL 10 ET IL EST PREVU SUR LE PISTON UNE FACE 9, QUI, AVEC UNE AUTRE FACE 12 PREVUE SUR LA TIGE DE PISTON, DEFINIT LE PASSAGE ETRANGLE.

AMORTISSEUR-VERIN

LA PRESENTE INVENTION CONCERNE LES AMORTISSEURS-VERINS. L'AMORTISSEUR-VERIN SE CARACTERISE ESSENTIELLEMENT PAR LE FAIT QU'IL COMPORTE AU MOINS UN CYLINDRE 101, UNE TIGE CREUSE 102 COULISSANT DANS LE CYLINDRE 101, ET UNE CHAMBRE DE GAZ 153 DELIMITEE PAR UN PISTON SEPARATEUR 141, ET DES MOYENS 140, 156, 154 POUR POSITIONNER CE PISTON ENTRE DEUX BUTEES 145, 147. L'AMORTISSEUR-VERIN TROUVE UNE APPLICATION PARTICULIEREMENT AVANTAGEUSE SUR LES AERODYNES ET NOTAMMENT SUR LES HELICOPTERES.

Shock absorber, particularly for motor vehicles

PROCESS AND DEVICE Of ACTIVE DAMPING Of OSCILLATIONS OF WHEELS OF VEHICLES

Improvements with the shock absorbers for vehicles

SHOCK ABSORBER HAS HYDRAULIC PLUG EXTERNAL FOR ABSORBTION OF THE SMALL OSCILLATIONS

Improvements with the plugs of shock

HYDRAULIC SHOCK ABSORBER WITH SELF-ADJUSTABLE END STOP FOLLOWING LOAD

Automobile suspension shock absorber comprises casing filled with hydraulic fluid and piston delimiting two chambers between which is wire-drawing module comprising slide valve

Cet agencement d'amortissement des mouvements d'une masse par rapport à un support comprend un carter (12) empli d'un fluide hydraulique et un piston (16) qui délimite, dans le carter, une première chambre (18) et une deuxième chambre (20), des moyens de mise en communication des première et deuxième chambres, et un module (44) de laminage du fluide entre les première et deuxième chambres. Le module de laminage (44) comporte un tiroir (58, 64) déplaçable dans un alésage (62) pourvu d'au moins un canal (52), entre une première position, dans laquelle il repose sur une portée (66) de manière à obturer le canal et une deuxième position dans laquelle il délimite avec la portée un passage de laminage débouchant dans le canal (52), ledit module de laminage comportant en outre des moyens (60, 68, 80, 82) pour créer et appliquer une pression différentielle de part et d'autre du tiroir (58, 64) de manière à provoquer le déplacement de ce dernier.

shock absorber

HYDRAULIC SHOCK ABSORBER WITH SELF-ADJUSTABLE END STOP FOLLOWING LOAD

ARISES PNEUMATIC COMPRISING a VARIABLE SHOCK ABSORBER Of OSCILLATIONS ACCORDING TO the PRESSURE OF SUPPORT

L'invention concerne un jambage de suspension, comprenant un ressort pneumatique (1) et un amortisseur d'oscillations (3), le ressort pneumatique (1) possédant une chambre de suspension (7) délimitée par un soufflet déroulant (5) et en liaison active par voie pneumatique avec un dispositif d'amortissement (15) variable en fonction de la pression de support. Un composant établissant la liaison entre la chambre de suspension (7) et le dispositif d'amortissement (15) est réalisé sans tuyau et intégré de telle sorte dans le jambage de suspension que ce composant présentant un canal (25) n'entraîne sensiblement pas de modification de la surface d'un piston de déroulement (11) associé au soufflet déroulant et que le piston de déroulement (11) constitue au moins une partie de ce canal.

HYDRAULIC SNUBBER

Remote adjustable shock absorber

A modified mono-tube shock is a lighter shock with less rod pressure, less seal drag, a greater range of valving, and faster heat dissipation. The shock includes an outer body, a shaft piston, a plurality of deflective discs, and a divider piston, wherein the divider piston is installed at a particular location inside the shock to create a gas chamber.

Damper device

A damper device includes a cylinder body, and a piston body. At least one end of either the cylinder body or the piston body is linked to an object to be braked to brake a relative movement or a movement of the object to be braked. The cylinder body includes a blocking member made of a synthetic resin at a deep inner section opposing to the piston body. The blocking member is formed separately from the cylinder body, and installed in one end of a tubular-shaped body forming the cylinder body. The blocking member has a fluid passage section and a braking force variable member moved therein. The braking force variable member holds passage of a fluid passing through the fluid passage section at a time of a movement of the piston body in a direction leaving from the deep inner section.

Damping force control type shock absorber

Oil grooves of a shutter and oil holes of a stepped rod constitute first orifices as variable orifices whose opening areas are variable according to the rotational position of the shutter. The oil grooves of the shutter and oil holes of the stepped rod constitute third orifices as variable orifices. Cut portions of inner disk valves constitute second orifices. The opening areas of the variable orifices are changed by rotating the shutter, thereby controlling damping force characteristics in a low piston speed region and the relief pressures of pressure control valves independently of each other, and thus increasing the degree of freedom for adjusting the damping force characteristics.

Compression sensitive suspension dampening

A spring for a suspension is described. The spring includes: a spring chamber divided into at least a primary portion and a secondary portion, and a fluid flow path coupled with and between the primary portion and the secondary portion. The fluid flow path includes a bypass mechanism, wherein the bypass mechanism is configured for automatically providing resistance within the fluid flow path in response to a compressed condition of the suspension.

Suspension Damper Device For A Bicycle

A suspension damper device comprising a housing adapted to be affixed, on which a suspension means may be supported which may be tensed in a direction of suspension via a damper body of a damping means adapted to be connected to a component to be dampened, wherein in the damper body a damper piston fixedly connected to the housing is guided which physically separates two damper spaces in the damper body, characterized in that three valves are provided whereby a volume flow of a fluid between the damping spaces may be controlled in particular during tensing of the suspension means in the direction of suspension. 1. A suspension damper device comprising a housing adapted to be affixed , a suspension means supported by the housing and which may be tensed in a direction of suspension via a damper body of a damping means adapted to be connected to a component to be dampened , wherein in the damper body a damper piston fixedly connected to the housing is guided which physically separates two damper spaces in the damper body , characterized in that three valves are provided whereby a volume flow of a fluid between the damping spaces controlled during tensing of the suspension means in the direction of suspension.2. The suspension damper device according to claim 1 , wherein the damper piston is fixedly connected to a guide rod affixed to the housing and separates a cylinder space from an annular space through which the guide rod extends claim 1 , wherein the three valves each control a volume flow of the fluid through the damper piston.3. The suspension damper device according to claim 1 , wherein the three valves each open a fluid connection between the cylinder space and the annular space when a respective predetermined pressure difference between the cylinder space and the annular space is exceeded claim 1 , and close the fluid connection when the pressure difference drops below the respective predetermined pressure difference.4. The suspension damper device according ...

Damping valve for shock absorber

The damping valve for a shock absorber includes a valve disc that delimits a cylinder interior filled with a working fluid, a port connects fluid chambers delimited by the valve disc, an leaf valve that is laminated onto the valve disc and is capable of moving in an axial direction of the valve disc so as to open and close the port in accordance with a differential pressure between the fluid chambers, and a biasing mechanism that biases the leaf valve in a direction for closing the port, wherein the biasing mechanism includes a shaft member constituted by a non-magnetic body, the leaf valve being disposed to be free to slide on an outer periphery of the shaft member; and a moving magnet that uses a magnetic force thereof to bias the leaf valve toward the valve disc.

Valve structure of shock absorber

Disclosed herein is a valve structure of a shock absorber which respectively controls damping force at a low amplitude and a high amplitude when a piston valve is compressed and expanded and thus simultaneously satisfies ride comfort and stability of a vehicle. The valve structure of the shock absorber which has a cylinder filled with a working fluid and a piston rod provided with one end located within the cylinder and the other end extending to the outside of the cylinder, includes a main piston valve assembly installed at the end of the piston rod and operated to generate damping force varied according to moving velocity under the condition that the inside of the cylinder is divided into an upper chamber and a lower chamber, and a sub piston valve assembly moving together with the main piston valve assembly to generate damping force varied according to frequency.

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A system for controlling vehicle motion is described. The system includes: a first set of sensors coupled with a vehicle, the first set of sensors configured for sensing the vehicle motion; and a vehicle suspension damper coupled with the first set of sensors, the vehicle suspension damper configured for adjusting a damping force therein, the vehicle suspension damper comprising: a primary valve; a pilot valve assembly coupled with the primary valve, the pilot valve assembly configured for metering a flow of fluid to the primary valve, in response to at least the sensing; and an orifice block coupled with the primary valve and comprising a control orifice there through, the control orifice configured for operating cooperatively with the pilot valve assembly in the metering the flow of fluid to the primary valve. 1. A system for controlling vehicle motion , said system comprising:a first set of sensors coupled with a vehicle, said first set of sensors configured for sensing said vehicle motion; and a primary valve;', 'a pilot valve assembly coupled with said primary valve, said pilot valve assembly configured for metering a flow of fluid to said primary valve, in response to at least said sensing; and', 'an orifice block coupled with said primary valve and comprising a control orifice there through, said control orifice configured for operating cooperatively with said pilot valve assembly in said metering said flow of fluid to said primary valve., 'a vehicle suspension damper coupled with said first set of sensors, said vehicle suspension damper configured for adjusting a damping force therein, said vehicle suspension damper comprising2. The system of claim 1 , wherein said pilot valve assembly is configured for said metering a flow of fluid to said primary valve in response to at least any of the following: an electro-mechanical device; a manually adjustable needle and jet arrangement; and a pressure signal from an outside pressure source.3. The system of claim 1 , ...

Dual range damping system for a shock absorber

A shock absorber includes a piston assembly which includes separate flow paths. Each flow path is controlled by a valve assembly and each flow path is in parallel with the other two flow paths. One flow path will generate firm damping characteristics. A second flow path opens depending on either the frequency of the shock absorber movement or the amount of movement or stroke of the shock absorber. The third flow path includes an on/off control valve and generates a soft damping characteristic when the control valve is activated. The soft damping characteristic can be generated by a tunable bleed restriction or by a passive valve assembly.

METHOD AND APPARATUS FOR CONTROLLING ANTI-YAW DAMPER

Provided is a method for controlling an anti-yaw damper, including: obtaining lateral acceleration signals of a frame and performing a first preprocessing on the lateral acceleration signals; obtaining a pressure difference between two chambers of an anti-yaw damper piston and performing a second preprocessing of the pressure difference; obtaining an MPPT algorithm objective function value at the current moment and an MPPT algorithm objective function value at the previous moment according to first preprocessing results and second preprocessing results, and comparing the MPPT algorithm objective function value at the current moment with the MPPT algorithm objective function value at the previous moment; and controlling the adjustment direction of an electromagnetic proportional valve of the anti-yaw damper according to the comparison result. According to the method, the damping force of the anti-yaw damper can be adjusted in real time, therefore the adaptability of the damper in different wheel wear conditions and the kinetic stability of a motor train unit are improved. Also provided is an apparatus for controlling an anti-yaw damper. 1. A method for controlling an anti-yaw damper , comprising:obtaining lateral acceleration signals of a frame and performing a first preprocessing on the lateral acceleration signals;obtaining a pressure difference between two chambers of a piston of an anti-yaw damper and performing a second preprocessing on the pressure difference;obtaining an MPPT algorithm objective function value at the current moment and an MPPT algorithm objective function value at the previous moment according to first preprocessing results and second preprocessing results, and comparing the MPPT algorithm objective function value at the current moment with the MPPT algorithm objective function value at the previous moment; andcontrolling the adjustment direction of an electromagnetic proportional valve of the anti-yaw damper according to the comparison result ...

METHODS AND APPARATUS FOR COMBINED VARIABLE DAMPING AND VARIABLE SPRING RATE SUSPENSION

Pressure-sensitive vales are incorporated within a dampening system to permit user-adjustable tuning of a shock absorber. In one embodiment, a pressure-sensitive valve includes an isolated gas chamber having a pressure therein that is settable by a user. 1a cylinder and a piston assembly comprising a piston and piston rod;working fluid within said damper, the damper comprising a compression chamber and a receiving chamber;a pressure-sensitive valve disposed in the damper between the compression chamber and the receiving chamber, the valve including:a first valve surface in communication with a pressurized gas;an opposing valve surface in communication with the working fluid.. A vehicle suspension damper comprising: This application claims priority to and is a continuation of the co-pending patent application, U.S. patent application Ser. No. 14/271,091, filed on May 6, 2014, entitled “METHODS AND APPARATUS FOR COMBINED VARIABLE DAMPING AND VARIABLE SPRING RATE SUSPENSION”, by Dennis K. Wootten et al., Attorney Docket Number FOX-0034US.CON, and assigned to the assignee of the present invention, the disclosure of which is hereby incorporated herein by reference in its entirety.The U.S. patent application Ser. No. 14/271,091 is a continuation of and claims the benefit of U.S. patent application Ser. No. 12/717,867, filed on Mar. 4, 2010, and is now abandoned, entitled “METHODS AND APPARATUS FOR COMBINED VARIABLE DAMPING AND VARIABLE SPRING RATE SUSPENSION” by Dennis K. Wootten et al., with Attorney Docket No. FOXF/0034USP1, and assigned to the assignee of the present application, which is incorporated herein, in its entirety, by reference.The U.S. patent application Ser. No. 12/717,867 claims priority to and benefit of U.S. Provisional Patent Application No. 61/157,541, filed on Mar. 4, 2009, entitled “METHODS AND APPARATUS FOR COMBINED VARIABLE DAMPING AND VARIABLE SPRING RATE SUSPENSION” by Dennis K. Wootten et al., with Attorney Docket No. FOXF/0034L, which is ...

IMPROVEMENT TO FREQUENCY DEPENDENT VALVES

A valve () comprises: a pressure chamber (); a valve assembly () controlling a passage of fluid (), the valve assembly () being configured in such a way that its preload force is controlled by the pressure chamber (); a spring element () that helps the valve assembly () oppose change in volume of the pressure chamber (), its preload force also controlled by the pressure chamber (); characterized in that: for a given change in volume of the pressure chamber (), reaction force from the spring element () changes faster than reaction force of the valve assembly (). 31. A valve () according to claim 4 , [{'b': 300', '301, 'said pressure chamber () comprises a moveable and/or deformable chamber wall (),'}, {'b': 370', '301', '100, 'said spring element () is configured to oppose movement or deformation of said chamber wall () which results in increased preload of said valve assembly ().'}], 'characterized in that41. A valve () according to claim 5 , characterized in that:{'b': 370', '100, 'said spring element () is higher in stiffness than said valve assembly ().'}51. A valve () according to claim 1 , [{'b': 300', '301, 'said pressure chamber () comprises a moveable and/or deformable chamber wall (),'}, {'b': 370', '301', '100, 'said spring element () is configured to oppose movement or deformation of said chamber wall () which results in increased preload of said valve assembly ().'}], 'characterized in that61. A valve () according to claim 2 , {'b': 370', '100, 'said spring element () is higher in stiffness than said valve assembly ().'}, 'characterized in that The present disclosure relates to hydraulic shock absorbers and dampers which can be adapted for use in a suspension system such as the systems used for transportation vehicles. More particularly, the present disclosure relates to a frequency dependent shock absorber, to provide different damping characteristics when subjected to input of differing frequencies.Frequency dependent valves such as those described in ...

Valve For A Vibration Damper, Vibration Damper, And Motor Vehicle

A valve for a vibration damper having a valve housing and a valve slide movable in the valve housing for at least partially closing at least one flow path of a fluid flowing through the valve. The valve has an input side and an output side. The pressure impingement surfaces of the valve slide for an opening pressure and for a closing pressure are substantially equal, and the valve slide has a constriction via which a pressure difference between opening pressure and closing pressure can be generated. At least one channel connects the interior space of the valve slide to the exterior space of the valve slide. 116.-. (canceled)17. A valve having for a vibration damper comprising:a valve housing;an input side of the valve;an output side of the valve;a valve slide movable in the valve housing configured to at least partially close at least one flow path of a fluid flowing through the valve;a first pressure impingement surface of the valve slide for an opening pressure;a second pressure impingement surface of the valve slide for a closing pressure, the first pressure impingement surface and the second pressure impingement surface being substantially equal;a constriction of the valve slide via which a pressure difference between an opening pressure and a closing pressure can be generated; andat least one channel that connects an interior space of the valve slide to an exterior space of the valve slide.18. The valve according to claim 17 , further comprising a force accumulator configured to preload the valve slide.19. The valve according to claim 17 , wherein the at least one channel connects the interior space of the valve slide to an annular space around the valve slide configured to accommodate a spring.20. The valve according to claim 17 , wherein the at least one channel is arranged in a region of the constriction.21. The valve according to claim 17 , wherein the constriction is formed as circular cross-sectional narrowing.22. The valve according to claim 17 , further ...

Vibration Damper And Motor Vehicle

A vibration damper with at least with at least two tube elements that are arranged one inside the other and a piston rod that is movable in a piston rod guide. A valve having a valve slide for at least partially closing at least one flow path of a fluid flowing through the valve is arranged in a region of one end of the piston rod guide. The valve has an input side and an output side. Pressure impingement areas of the valve slide are substantially the same size for an opening pressure and for a closing pressure, and the valve has a constriction via which a pressure difference between opening pressure and closing pressure can be generated. 121.-. (canceled)22. A vibration damper comprising:at least two tube elements which are arranged one inside the other;a piston rod guide;a piston rod which is movable in the piston rod guide; and a valve slide configured to at least partially close at least one flow path of a fluid flowing through the valve;', 'an input side;', 'an output side;', 'pressure impingement areas of the valve slide between the input side and the output side are substantially a same size for an opening pressure and for a closing pressure; and', 'a constriction between the input side and the output side via which a pressure difference between opening pressure and closing pressure can be generated., 'a valve arranged in a region of one end of the piston rod guide and comprising23. The vibration damper according to claim 22 , wherein at least one channel connects an exterior space of the valve slide to an interior space so that a pressure of the fluid is taken off at a level of the at least one channel.24. The vibration damper according to claim 23 , wherein the at least one channel connects the interior of the valve to an annular space inside the valve slide configured as an annular spring accommodating space.25. The vibration damper according to claim 23 , wherein the at least one channel is arranged in a region of the constriction.26. The vibration damper ...

THROTTLE POINT WITH A VALVE BODY WITH A CHANGING DIAMETER

A throttle point for a vibration damper, comprising a damper valve carrier with a circumferential annular groove, in which an annular valve body with a variable diameter is arranged. The annular valve body forms, with a guiding face for flowing damping medium, a throttle point, a throttle cross section of which decreases in the case of an increasing flow velocity of the damping medium within the throttle point. The circumferential annular groove forming a pressure chamber which is filled with damping medium. A radially outwardly directed actuating force acts on the valve body, wherein the pressure chamber is a constituent part of a hydraulic system which has a connector to at least one working space of the vibration damper and the hydraulic connection of which to the pressure chamber can be set. 1. A throttle point for a vibration damper , comprising a damper valve carrier with a circumferential annular groove , in which an annular valve body with a variable diameter is arranged , the annular valve body forms , with a flow guiding face for flowing damping medium , the throttle point , a throttle cross section of which decreases with an increase flow velocity of the damping medium within the throttle point , the circumferential annular groove forming a pressure chamber which is filled with damping medium , wherein a radially outwardly directed actuating force acts on the valve body , the pressure chamber being a constituent part of a hydraulic system of the damper valve device , wherein at least one component of the hydraulic system can be adjusted.2. The throttle point as claimed in claim 1 , wherein the hydraulic system has a connector to at least one working space of the vibration damper claim 1 , wherein the hydraulic connection of the connector to the pressure chamber can be set.3. The throttle point as claimed in claim 2 , wherein the hydraulic system has a connecting channel between two working spaces; of the vibration damper claim 2 , wherein the connecting ...

DAMPER WITH DUAL SPRINGS

A damper includes a pressure tube and a piston defining a rebound chamber and a compression chamber within the pressure tube. The damper further includes an adapter attached to the pressure tube. The damper includes a retainer slidably disposed within the pressure tube. The retainer and the adapter define an end chamber therebetween within the pressure tube. The damper also includes a cup movably disposed within the pressure tube between the retainer and the adapter. The damper further includes a tubular member disposed adjacent to the cup and attached to the adapter. The tubular member includes at least one through aperture. The damper includes a base valve attached to the adapter. The damper also includes a first spring disposed between the retainer and the cup and a second spring disposed between cup and the adapter. 1. A damper comprising:a pressure tube defining a first end and a second end opposite to the first end;a piston slidably disposed within the pressure tube, the piston defining a rebound chamber and a compression chamber within the pressure tube;an adapter attached to the pressure tube at the second end;a retainer slidably disposed within the pressure tube proximal to the second end, the retainer comprising a retainer opening therethrough, wherein the retainer and the adapter define an end chamber therebetween within the pressure tube, and wherein the retainer opening fluidly communicates the end chamber with the compression chamber;a cup movably disposed within the pressure tube between the retainer and the adapter, the cup comprising a cup opening therethrough, wherein the cup opening fluidly communicates the cup with the end chamber;a tubular member disposed adjacent to the cup and attached to the adapter, the tubular member comprising a first open end disposed in fluid communication with the cup, a second open end opposite to the first open end, and at least one through aperture disposed between the first open end and the second open end, wherein ...

VARIABLE SHOCK-ABSORBING DAMPER FOR FURNITURE HINGE, WITH BUILT-IN PRESSURE CONTROL MEANS

A shock-absorbing damper for absorbing the impact force generated during the opening/closing of a furniture door, the damper including: a load pin in a housing to move back and forth during the opening/closing of the furniture door; a main valve coupled to the load pin to form a first flow path; a check valve coupled to a guide bar of the main valve in a manner to form a second flow path; a guider coupled to the main valve to guide the fluid flow; and a pressure adjuster interposed between the main valve and the check valve to vary the first flow path. The pressure adjuster and the guider are provided in the shock-absorbing damper to vary a flow path corresponding to an opening/closing load of the furniture door, thereby opening/closing the furniture door at a set speed regardless of the size or weight. 14-. (canceled)5. A variable shock-absorbing damper for a furniture hinge , which includes a pressure adjustment means built in the furniture hinge to buffer and absorb an external load occurring in the process of opening and closing a furniture door , the damper comprising:a housing configured to have accommodated therein a working fluid of the shock-absorbing damper;a load pin fittingly coupled to the housing and configured to reciprocate in the process of opening and closing the furniture door;a main valve coupled to the load pin and including a first flow path defined therein;a check valve slidably coupled to a guide bar of the main valve so as to allow a second flow path to be defined between the guide bar and the check valve;a guider configured to be expanded or returned to its original position by a pressure of the working fluid while being coupled to the main valve to guide a fluid flow; anda pressure adjuster interposed between the main valve and the check valve and configured to be deformed according to the pressure of the fluid to vary the first flow path.6. The variable shock-absorbing damper according to claim 5 , wherein the main valve comprises a semi- ...

PRESSURE BUFFER DEVICE AND DAMPING FORCE GENERATING MEMBER

A piston section includes a valve seat that forms a first compression-side oil path through which oil flows in accordance with relative movement of a piston rod against a first cylinder, a first compression-side valve section that performs opening-closing of the first compression-side oil path of the valve seat, an inner annular section annularly formed as projecting in the axial direction of the valve seat from the valve seat toward the first compression-side valve, and an extending section that extends in the radial direction of the valve seat from an outer side of the inner annular section to a position at the inner side from a second oil path opening of the first compression-side oil path and projects in the axial direction from the valve seat toward the first compression-side valve section. 1. A pressure buffer device , comprising:a cylinder that stores fluid;a rod that moves in a cylinder axial direction with an end part thereof on one side located in the cylinder and an end part thereof on the other side projected from an opening of the cylinder; anda damping force generating section that generates damping force for relative movement of the rod against the cylinder,the damping force generating section including a channel forming section that forms a channel through which the fluid flows in accordance with the relative movement of the rod against the cylinder, a valve that performs opening-closing of the channel of the channel forming section, an annular projecting section that is annularly formed as projecting in an axial direction of the channel forming section from the channel forming section toward the valve, and an extending section that extends in a radial direction of the channel forming section from an outer side of the annular projecting section to a position at an inner side from an channel opening of the channel and projects in the axial direction from the channel forming section toward the valve.2. The pressure buffer device according to claim 1 , ...

INFINITE ADJUST SEAT POST WITH PRESSURE RELIEF VALVE

An assembly for enabling continuous seat post function during extreme conditions is described and includes: a first valve at least partially, slidably disposed within a stationary piston and for controlling a first fluid pathway there through, wherein the first fluid pathway runs from a first portion and to a second portion of the oil chamber, wherein the stationary piston separates the oil chamber into the first portion and the second portion; and a second valve at least partially disposed within the stationary piston and disposed in series with the first valve and having a second fluid pathway disposed through the first valve and the second valve, being in parallel with the first fluid pathway, running from the first portion to the second portion of the oil chamber, and providing a bypass for oil to flow from the first portion to the second portion when the first fluid pathway is closed. 1an upper post;a lower post, wherein said upper post and said lower post are telescopically disposed with respect to each other;a piston coupled to said lower post;a first valve at least partially disposed within said piston, said first valve controlling a first fluid pathway through said piston, wherein said first fluid pathway extends between a first portion of a fluid chamber and a second portion of said fluid chamber, said first portion of said fluid chamber and said second portion of said fluid chamber separated by said piston;an internal floating piston disposed within said seat post, said internal floating piston disposed between said second portion of said fluid chamber and a gas chamber such that said internal floating piston separates said gas chamber from said second portion of said fluid chamber; anda second valve at least partially disposed within said piston, said second valve providing a second fluid pathway through said piston, wherein said second fluid pathway extends between said first portion of said fluid chamber and said second portion of said fluid chamber ...

Damper with digital valve

A shock absorber has a compression valve assembly that provides a high damping load during a compression stroke and an extension valve assembly that provides a high damping load during an extension stroke. One or more digital valve assemblies is positioned to work in parallel with the compression valve assembly and the extension valve assembly to provide a lower damping load. The lowering of the damping load is based upon the cross sectional area of flow passages provided by the one or more digital valve assemblies.

FLUID DAMPER HAVING A DAMPING PROFILE FAVORABLE FOR ABSORBING THE FULL RANGE OF COMPRESSION FORCES, INCLUDING LOW- AND HIGH-SPEED COMPRESSION FORCES

A fluid damper is provided that has a compression damping profile that is favorable for damping the full range of compression forces, including low- and high-speed compression forces. While achieving this compression damping profile, the damper has a mode that does not require: (1) both low- and high-speed compression circuits; (2) the rider or a complicated control system to make adjustments to the compression circuit to achieve the different compression damping curves/profiles; and/or (3) the use of an inertia valve. The damping curve should be at least non-increasing and may be regressive across substantially the entire high-speed operating range of the damper. 1a compression damping circuit including a control valve for controlling fluid flow through at least one flow port and creating compression damping forces; the control valve including a spring for biasing the control valve towards its closed position; andthe spring causing the compression damping circuit to produce a damping curve favorable for absorbing the full range of shaft speeds.. A fluid damper for absorbing compression forces associated with low and high shaft speeds, comprising: The invention is generally directed to the field of fluid dampers. The invention is more specifically directed to the field of fluid dampers for use with bicycles and/or applications where the damper will be subjected to the full range of compression forces, including low- and high-speed compression forces. All patents and published applications referred to herein are incorporated by reference in their entirety into this patent application.Because the description of the present invention makes repeated reference to compression damping curves (sometimes referred to as compression damping profiles) for fluid dampers (herein referred to as dampers), some background on damping curves is provided. Force verses velocity (F-v) diagrams are the commonly used graphical form to illustrate damper characteristics. depict various prior ...

SHOCK ABSORBER

A shock absorber includes expanding-side and contracting-side chambers formed in a cylinder, a housing that forms a pressurizing chamber, a free piston that partitions the pressurizing chamber into an expansive pressurizing chamber communicating with the expanding-side chamber and a contractive pressurizing chamber communicating with the contracting-side chamber, and expanding-side and contracting-side springs that exert biasing forces for suppressing the free piston from being displaced from a neutral position. The contracting-side spring has a non-linear characteristic by which the spring constant increases as it is compressed. 1. A shock absorber comprising:a cylinder;a piston slidably inserted into the cylinder to partition the cylinder into an expanding-side chamber and a contracting-side chamber;a damping passage that communicates the expanding-side chamber to the contracting-side chamber;a housing that forms a pressurizing chamber;a free piston slidably inserted into the pressurizing chamber to partition the pressurizing chamber into an expansive pressurizing chamber and a contractive pressurizing chamber;an expanding-side passage that communicates the expanding-side chamber to the expansive pressurizing chamber;a contracting-side passage that communicates the contracting-side chamber to the contractive pressurizing chamber; anda spring element being configured to position the free piston in a neutral position with respect to the housing, the spring element being configured to exert a biasing force for suppressing the free piston from being displaced from the neutral position,wherein the contracting-side passage has an orifice formed to penetrate through the housing and a recess formed in an outer circumference of the free piston, the recess communicating with the contractive pressurizing chamber,the spring element has an expanding-side spring housed in the expansive pressurizing chamber and a contracting-side spring housed in the contractive pressurizing ...

SHOCK ABSORBER WITH FREQUENCY DEPENDENT PASSIVE VALVE

A shock absorber has a pressure tube with a piston assembly slidably disposed within the pressure tube and attached to a piston rod. The pressure tube is disposed within a reserve tube and a working fluid reservoir is formed between the pressure tube and the reserve tube. The piston assembly divides the pressure tube into an upper working chamber and a lower working chamber. A base valve assembly controls a flow of working fluid between the working fluid reservoir and the lower working chamber. The base valve assembly includes a frequency dependent valve system that provides an increased level of damping for each compression stroke of the piston assembly during low frequency movements of the shock absorber. A lesser level of damping is provided for each compression stroke during high frequency movements of the shock absorber. 1. A shock absorber comprising:a pressure tube defining a fluid chamber for containing a working fluid;a reserve tube, with the pressure tube being disposed within the reserve tube to define a working fluid reservoir between the pressure tube and the reserve tube;a piston assembly disposed within the pressure tube and secured to a piston rod, the piston assembly disposed dividing said fluid chamber into an upper working chamber and a lower working chamber; act as a bypass to allow a portion of the working fluid to pass therethrough during high frequency movements of the shock absorber during each compression stroke of the piston assembly, to thus provide a minimum degree of damping; and', 'to at least substantially interrupt a flow of the working fluid therethrough during low frequency movements of the shock absorber during each of the compression strokes, to thus provide increased damping., 'a base valve assembly disposed between the lower working chamber and the working fluid reservoir, the base valve assembly including a frequency dependent valve system operable to2. The shock absorber of claim 1 , wherein the frequency dependent valve ...

Adjustable Damping Valve Device

An adjustable damping valve device includes a pressure-dependent auxiliary damping valve with an auxiliary damping valve body having at least one through-channel whose outlet side is at least partially covered by at least one valve disk. The at least one valve disk is centered at its outer diameter with respect to the auxiliary damping valve body, and the auxiliary damping valve body is constructed integral with a centering collar at which the at least one valve disk is guided. 17-. (canceled)81. An adjustable damping valve device () comprising:{'b': 23', '25, 'at least one valve disk (; );'}{'b': 15', '17', '19', '21', '23', '25', '25', '17, 'a pressure-dependent auxiliary damping valve () with an auxiliary damping valve body () having at least one through-channel (; ) comprising an outlet side at least partially covered by said at least one valve disk (; ), said at least one valve disk () being centered at its outer diameter with respect to said auxiliary damping valve body (),'}{'b': 27', '17', '27', '25, 'a centering collar (); and wherein said auxiliary damping valve body () is constructed integral with said centering collar () for guiding said at least one valve disk ().'}9353127173335312535. The adjustable damping valve device according to claim 8 , additionally comprising an annular cover () and a valve spring (); and wherein said centering collar () of said auxiliary damping valve body () comprises a front face () on which said annular cover () is supported claim 8 , said valve spring () preloading said valve disk () being supported at said annular cover ().103737273941437. The adjustable damping valve device according to claim 8 , additionally comprising a sleeve portion (); and wherein said sleeve portion () axially adjoining said centering collar () forms a dividing piston () between two working chambers (; ) which are formed in a cylinder () of a vibration damper.1131731. The adjustable damping valve device according to claim 8 , additionally comprising ...

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper. 1accessing a set of control signals, wherein at least a first control signal of said set of control signals comprises a set of values associated with at least one user-induced input, wherein at least one vehicle suspension damper is coupled to a frame of said vehicle;accessing a set of release thresholds associated with a throttle position and a throttle velocity of said at least one user-induced input;comparing said set of values associated with said at least one user-induced input with a predetermined user-induced input threshold value, to achieve a user-induced input threshold value approach status;monitoring a state of at least one valve within said at least one vehicle suspension damper, wherein said state controls a damping force within said at least one vehicle suspension damper;based on said user-induced input threshold value approach status and said set of release thresholds, determining a control mode for said at least one vehicle suspension damper; andaccording to said control mode and based on said monitoring, regulating damping forces within said at least one vehicle suspension damper by actuating said at least one valve to adjust to a desired state, such that a tilt of said frame is reduced.. A non-transitory computer readable ...

Damping valve and shock absorber

A damping valve includes a valve seat member, a first valve element stacked on the valve seat member, a second valve element provided between an inner circumference valve seat of the valve seat member and the first valve element, the second valve element being configured to open and close a hole of the first valve element, and a biasing member configured to bias the first valve element towards the second valve element, wherein a surface of the second valve element on an opposite side from the valve seat member is higher than the outer circumference valve seat of the valve seat member.

COMPRESSION ISOLATOR FOR A SUSPENSION DAMPER

A method and apparatus for a damper. The damper comprises a fluid chamber having a piston dividing the chamber into a compression and rebound sides, a reservoir in fluid communication with the compression side of the chamber, and an isolator disposed between the compression side and the reservoir, whereby the isolator obstructs fluid flow between the compression side and the reservoir. In one embodiment, a bypass provides a fluid path between the compression side and the isolator. 1. A vehicle suspension comprising: a compression side; and', 'a rebound side;, 'a fluid chamber housing, said fluid chamber housing defining a fluid chamber therein, said fluid chamber comprisinga piston disposed within said fluid chamber, said piston dividing said fluid chamber into said compression side and said rebound side;a compression isolator disposed within said fluid chamber housing; a fluid-fillable portion, said fluid-fillable portion configured to receive fluid from said fluid chamber as a fluid capacity of said compression side of said fluid chamber decreases during a compression stroke; and', 'a gas pocket; and', 'a floating piston disposed within said reservoir chamber, said floating piston movably sealing said fluid-fillable portion from said gas pocket, said floating piston configured to transfer pressure between fluid in said fluid-fillable portion of said fluid reservoir and said gas pocket; and, 'a reservoir chamber housing physically distinct from said fluid chamber housing, said reservoir chamber housing defining a reservoir chamber therein, said reservoir chamber fluidically coupled with said fluid chamber, said reservoir chamber housing comprisinga bypass chamber providing a fluid pathway between said compression side and said rebound side, said bypass chamber being in fluid communication with said fluid chamber via a set of ports disposed in a wall of said fluid chamber housing.2. The vehicle suspension of claim 1 , wherein said bypass chamber further comprises:an ...

DAMPING VALVE

In a damping valve having a partition that separates a first chamber and a second chamber, a valve seat that is formed on an end surface of the partition facing the first chamber or the second chamber; and a leaf valve whose outer-circumferential end portion is separably seated on the valve seat, the leaf valve has a plurality of orifices for allowing working fluid to flow therethrough in the outer-circumferential end portion, and the plurality of orifices are concentrated in an arbitrary region along a circumferential direction in the outer-circumferential end portion of the leaf valve. 1. A damping valve comprising:a partition that partitions a first chamber and a second chamber in a cylinder;a valve seat that is formed on an end surface of the partition facing the first chamber or the second chamber; anda leaf valve whose outer-circumferential end portion is separably seated on the valve seat, whereina damping force is generated in accordance with moving speed of the partition;the leaf valve has an orifice-concentrated portion in which a plurality of orifices for allowing working fluid to flow therethrough are formed, in a concentrated manner, in an arbitrary region along circumferential direction in an outer-circumferential end portion of the leaf valve;when the partition is in a low-speed region, the working fluid flows out through the plurality of orifices without deflecting the outer-circumferential end portion of the leaf valve, thereby generating a damping force; andwhen flow rate of the working fluid is increased and the plurality of orifices become no longer sufficient to allow all working fluid to flow out by passing therethrough, the orifice-concentrated portion is deflected in preference to another part and the working fluid flows out through a partial gap formed by the deflection of the orifice-concentrated portion, thereby generating a damping force.2. A damping valve according to claim 8 , whereinthe plurality of orifices consist of a plurality of ...

DRIVE ASSEMBLY FOR A FLAP OF A MOTOR VEHICLE

A drive assembly for a flap of a motor vehicle includes at least one motor drive and at least one gas pressure element having a cylinder and a piston. The piston divides the cylinder interior into two partial spaces and has a passage arrangement, through which a balancing flow between the two partial spaces arises when the piston moves. The gas pressure element has a first drive connection point connected to the cylinder and a second drive connection point connected to the piston. A switchable valve assembly is associated with the piston and can be brought into a closed state, in which the valve assembly at least partially closes the passage arrangement, and it has an open state, in which the valve assembly opens the passage arrangement. The passage arrangement automatically switches into the closed state in the event of a balancing flow that exceeds a predefined switching flow. 1. A drive arrangement configured to adjust a flap of a motor vehicle , the drive arrangement comprising:a motor-operated drive; and a sealed cylinder defining a cylinder axis and including an interior portion containing a pressurized fluid,', 'a piston configured to move along the cylinder axis within the interior portion, wherein the piston divides the interior portion into a first space and a second space, and includes an overflow channel arrangement configured to facilitate a flow of the pressurized fluid between the first space and the second space,', 'a first drive connection connected to the sealed cylinder,', 'a second drive connection connected to the piston, and', 'a switchable valve arrangement configured to change between a closed state, in which the overflow channel arrangement is closed, and an open state in which the overflow channel arrangement is open, in response to an emergency event causing a compensating flow to exceed a predetermined switching flow., 'a gas pressure element including,'}2. The drive arrangement of claim 1 , wherein the gas pressure element includes a ...

DAMPER ASSEMBLY

A damper assembly includes a damper, an accumulator, and a tube mount. The damper includes a tube having an outer surface. The tube defines a central axis and a first cavity in the outer surface. The accumulator has an end defining a second cavity. The accumulator defines a longitudinal axis. The tube mount is attached to the outer surface of the tube around the first cavity. The tube includes a damper fluid. The end of the accumulator is supported by the tube mount to allow the damper fluid to flow from the tube through the first cavity and into the accumulator through the second cavity. The longitudinal axis of the accumulator is transverse to the central axis of the tube. 1. A damper assembly , comprising:a damper including a tube having an outer surface, the tube defining a central axis and a first cavity in the outer surface;an accumulator having an end defining a second cavity, the accumulator defining a longitudinal axis; anda tube mount attached to the outer surface of the tube around the first cavity;wherein the tube includes a damper fluid;wherein the end of the accumulator is supported by the tube mount to allow the damper fluid to flow from the tube through the first cavity and into the accumulator through the second cavity;wherein the longitudinal axis of the accumulator is transverse to the central axis of the tube.2. The damper assembly of claim 1 , wherein the tube mount includes a ring claim 1 , and the accumulator is supported by the ring.3. The damper assembly of claim 2 , wherein the end of the accumulator is welded to the ring.4. The damper assembly of claim 1 , wherein the tube mount and the end of the accumulator form a fluid-tight seal.5. The damper assembly of claim 1 , wherein the tube mount and the end of the accumulator form a substantially circular seal.6. The damper assembly of claim 1 , wherein the accumulator includes a piston and the damper fluid is movable into the accumulator to move the piston.7. The damper assembly of claim 1 , ...

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper. 1accessing a set of control signals, wherein at least a first control signal of said set of control signals comprises a measured location information associated with a location of a vehicle, wherein a vehicle suspension damper is coupled with a frame of said vehicle, wherein at least a second control signal of said set of control signals comprises measured environmental information;accessing a set of date values;comparing said measured environmental information with predetermined environmental threshold values;monitoring a state of at least one valve within said at least one vehicle suspension damper, wherein said state controls a damping force within said at least one vehicle suspension damper;based on said measured location information, said set of date values and said comparing, determining a control mode for said at least one vehicle suspension damper; andaccording to said control mode and based on said monitoring, regulating damping forces within said at least one vehicle suspension damper by actuating said at least one valve to adjust to a desired state, such that a tilt of said frame is reduced.. A non-transitory computer readable storage medium having stored thereon, computer-executable instructions that, when executed by a computer, ...

BYPASS FOR A SUSPENSION DAMPER

A vehicle suspension damper comprises a cylinder and a piston assembly including a damping piston along with working fluid within the cylinder. A bypass permits fluid to avoid dampening resistance of the damping piston. A fluid path through the bypass is controlled by a valve that is shifted by a piston surface when the contents of at least one predetermined volume is injected against the piston surface which acts upon the valve. In one embodiment, the bypass is remotely operable. 1a cylinder containing a fluid and a damping piston operable to travel within said fluid in said cylinder, said vehicle suspension damper further including a passageway through said damping piston and limiting a flow rate of said fluid through said damping piston in at least one direction;a bypass pathway in fluid communication with said cylinder, said bypass pathway providing a path for said fluid to travel between a first side and a second side of said damping piston; a valve body;', 'a valve piston housed within said valve body, said valve piston having a valve piston surface;', 'a shaft extending from said valve piston;', 'a valve member coupled to said shaft, said valve member telescopically mounted to said shaft and said valve member movable with respect to said shaft wherein a gap is formed between said valve member and an end of said shaft;', 'a spring member mounted on said shaft between said valve member and said valve piston, said spring member biasing said valve member away from said valve piston; and', 'a manual pre-load adjustment coupled to said valve piston, said manual pre-load adjustment configured to adjust a position of said valve piston; and, 'a valve for controlling a flow of said fluid through said bypass pathway, said valve comprisingat least one predetermined fluid volume in selective fluid communication with said valve piston surface for causing displacement of said valve piston; wherein the valve is remotely controllable.. A vehicle suspension damper comprising: ...

SHOCK ABSORBER

In a shock absorber, an extension-side check valve permitting a flow of hydraulic fluid directed from a common passage to a compression-side passage side, and a compression-side orifice establishing communication between the compression-side passage and a compression-side back-pressure chamber are provided in an extension-side discharge passage. A compression-side check valve permitting a flow of hydraulic fluid directed from the common passage to an extension-side passage side, and an extension-side orifice establishing communication between the extension-side passage and an extension-side back-pressure chamber are provided in a compression-side discharge passage. A pilot valve includes a valve body slidably inserted in the common passage, and a valve spring biasing the valve body in a valve-opening direction. The valve body includes a fitting portion fitted in a passage between the back-pressure chamber on an upstream side and the common passage on a downstream side when the valve body is stroked in the valve-opening direction. 1. A shock absorber comprising:a cylinder sealingly containing hydraulic fluid therein;a piston slidably inserted in the cylinder;a piston rod having one end coupled with the piston and an opposite end extending outward from the cylinder;an extension-side passage and a compression-side passage provided in the piston;an extension-side main valve provided in the extension-side passage;an extension-side back-pressure chamber configured to adjust a pressure of opening the extension-side main valve;a compression-side main valve provided in the compression-side passage;a compression-side back-pressure chamber configured to adjust a pressure of opening the compression-side main valve;a common passage configured to establish communication between the extension-side back-pressure chamber and the compression-side back-pressure chamber; anda pilot valve configured to control a flow of hydraulic fluid in the common passage,wherein an extension-side ...

PISTON VALVE ASSEMBLY FOR SHOCK ABSORBER

In a piston valve assembly for a shock absorber, a main piston partitions a cylinder into an upper chamber and a lower chamber. Compression passages and rebound passages penetrate the main piston in a vertical direction. A first compression value forms a first compression chamber, and a top surface of a lower retainer is opened toward the upper chamber. Bypass passages are formed on an outer peripheral surface of the piston rod. A guide assembly surrounds an outer peripheral surface of the compression valve and the bottom surface of the compression valve, tightly contacts the bottom surface of the compression valve in a high-frequency section, and moves down toward the lower retainer in a low-frequency section. A lower disk assembly forms a second compression chamber in the lower retainer while covering the opened top surface of the lower retainer, communicates the second compression chamber with the lower chamber in the high-frequency section, and blocks the communication between the second compression chamber and the lower chamber in the low-frequency section due to the downward movement of the guide assembly. 1. A piston valve assembly for a shock absorber , comprising:a piston rod reciprocating within a cylinder;a main piston mounted on the piston rod and partitioning the cylinder into an upper chamber and a lower chamber, wherein a plurality of compression passages and a plurality of rebound passages penetrate the main piston in a vertical direction;a compression valve mounted on the piston rod and disposed under the main piston, wherein the first compression value forms a first compression chamber on a bottom surface, the first compression chamber having a ring shape around the piston rod toward the lower chamber;a lower retainer mounted on the piston rod and disposed under the compression valve, wherein a top surface of the lower retainer is opened toward the upper chamber;a plurality of bypass passages formed on an outer peripheral surface of the piston rod ...

HYDRAULIC SHOCK ABSORBER WITH COMPRESSION FILTERING

The invention relates to a shock absorber (), in particular for a motor vehicle, which comprises: a cylinder () containing a hydraulic fluid; a main piston () actuated by a rod (), defining in the cylinder a first main chamber () and a second main chamber (), the second main chamber containing the rod; a hydraulic fluid vessel (); and a valve () placed in the flow of the hydraulic fluid between the first main chamber and the second main chamber or between the first main chamber and the vessel. The valve comprises a mobile gate () engaging with a seat (), a spring () tending to urge the gate against the seat thereof, and a mobile valve piston (), defining a first valve chamber () and a second valve chamber () in the valve, said mobile valve piston being capable of compressing the spring and closing the gate. The shock absorber also includes a control restriction () mounted in the flow of the hydraulic fluid from the first main chamber () during a compression movement, the control restriction being capable of generating a pressure difference acting on the respective surfaces of the mobile valve piston in a direction that tends to compress the spring during a compression movement and a means () for slowing the movement of the mobile valve piston (). 112435624111413201778188219831551778. A shock absorber () , notably for a motor vehicle , comprising a cylinder () containing a hydraulic fluid , a main piston () actuated by a rod () , defining within the cylinder a first main chamber () and a second main chamber () , the second main chamber containing the rod , a reservoir of hydraulic fluid () and a valve () placed in the flow of hydraulic fluid between the first main chamber and the second main chamber or between the first main chamber and the reservoir , the valve comprising a mobile shutter () collaborating with a seat () , a spring () tending to press the valve shutter onto its seat , and a mobile valve piston ( , ) defining within the valve a first valve chamber ( , ...

Lower-side spring-receiving member

A lower-side spring receiving member is adapted to receive a compression spring provided with an effective part, end turn parts which do not elastically deform, and rising parts located between the effective part and the end turn parts, at a lower side of the compression spring. The lower-side spring receiving member is provided with a contact part which is formed to protrude outward from an end at one side in the extending direction thereof, and which is in contact with the rising part so as not to form a gap between the contact part and the rising part. The contact part is in contact with the rising part of the compression spring by an elastic force caused by elastic deformation, regardless of a load on the compression spring.

Hydraulic Damper Having Self-Adjusting Wear Band

A hydraulic damper assembly including a housing that extends about and along an axis and defines an interior wall and a chamber for holding a fluid. A piston assembly is disposed in the chamber and axially moveable therein. The piston assembly includes a core. A wear band is disposed about the core and has an inside surface and an outside surface. The inside surface of the wear band defines at least one groove in fluid communication with the chamber for allowing the fluid to bias the wear band toward the interior wall of the housing during the passage of the fluid though the at least one groove during movement of the piston assembly. 1. A hydraulic damper assembly comprising:a housing extending about and along an axis and defining an interior wall and a chamber for holding a fluid;a piston assembly disposed in said chamber and axially moveable therein;said piston assembly including a core;a wear band disposed about said core and having an inside surface and an outside surface; andsaid inside surface of said wear band defining at least one groove in fluid communication with said chamber for allowing the fluid to bias said wear band toward said interior wall of said housing during the passage of the fluid through said at least one groove during the movement of said piston assembly.2. A hydraulic damper assembly as set forth in wherein said wear band extends axially between a first end and a second end claim 1 , and said groove extends from one of said first and second ends of said wear band toward the other of said first and second ends.3. A hydraulic damper assembly as set forth in wherein said at least one groove extends between said first and second ends of said wear band.4. A hydraulic damper assembly as set forth in wherein said at least one groove extends axially along its entire length.5. A hydraulic damper assembly as set forth in wherein said at least one groove includes a plurality of said grooves.6. A hydraulic damper assembly as set forth in wherein said ...

METHODS AND APPARATUS FOR COMBINED VARIABLE DAMPING AND VARIABLE SPRING RATE SUSPENSION

Pressure-sensitive vales are incorporated within a dampening system to permit user-adjustable tuning of a shock absorber. In one embodiment, a pressure-sensitive valve includes an isolated gas chamber having a pressure therein that is settable by a user. 1. A vehicle suspension damper comprising:a cylinder;a piston assembly comprising a piston and piston rod within said cylinder;a first chamber within said cylinder, said first chamber having a first pressure and a working fluid therein;a second chamber within said cylinder, said second chamber having a second pressure, the second chamber fluidly isolated from said first chamber and having pressurized gas therein, said second chamber having a portion thereof disposed in said piston; a suspension gas spring coupled with said cylinder, said suspension gas spring comprising:', 'an enclosure, said enclosure movable with respect to said cylinder; and', 'a third chamber at least partially enclosed by said enclosure, said third chamber having a third pressure, said third chamber fluidly coupled with said second chamber, wherein a pressure change of said third pressure within said suspension gas spring will cause a pressure change to said second pressure within said cylinder., 'a pressure-sensitive valve disposed in said piston, said pressure-sensitive valve configured to adjust damping of said vehicle suspension as a pressure change occurs within said cylinder;'}2. The vehicle suspension damper of further comprising:a fourth chamber disposed within said cylinder, said fourth chamber having a pressurized gas therein at a fourth pressure.3. The vehicle suspension damper of further comprising:a floating piston movably disposed within said cylinder between said fourth chamber and said first chamber.4. The vehicle suspension damper of wherein said floating piston is configured to move axially within said cylinder upon a pressure change within said first chamber.5. The vehicle suspension damper of wherein a movement of said ...

AMPLITUDE SENSITIVE HYDRAULIC DAMPER

A hydraulic damper () includes a slidable piston assembly () attached to a piston rod () to form at least one valve assembly of the damper. The damper further includes at least one chamber in which a slidable partition assembly () separates this chamber into an additional compression chamber () hydraulically connected with a main compression chamber () and an additional rebound chamber () hydraulically connected with a main rebound chamber (). The slidable partition assembly () comprises a piston () making a sliding fit with an inner surface of the chamber and at least one spring () supporting the piston (). The slidable partition assembly () additionally comprises at least one internal piston () disposed slidably within the external piston () and supported by an internal spring () disposed between the internal piston () and the external piston (). 12. A hydraulic damper () , in particular a damper of a motor vehicle suspension , comprising:{'b': 4', '6', '2', '7, 'a tube filled with working liquid, inside of which a slidable piston assembly () attached to a piston rod () led outside the damper () through a sealed piston rod guide () is disposed,'}{'b': 4', '04', '10', '9', '09', '41', '041', '42', '042', '2, 'said piston assembly forming at least one valve assembly of the damper, wherein each valve assembly (, ) of the damper separates the damper into a main compression chamber () and a main rebound chamber (, ) and is provided with rebound (, ) and compression (, ) valve assemblies to control the flow of working liquid passing through it during rebound and compression stroke of the damper (),'}{'b': 54', '101', '10', '91', '9', '09', '54', '541', '543', '541, 'at least one chamber in which a slidable partition assembly () separating this chamber into an additional compression chamber () hydraulically connected with a main compression chamber () and an additional rebound chamber () hydraulically connected with a main rebound chamber (, ), which slidable partition ...

SHOCK ABSORBER WITH FREQUENCY DEPENDENT PASSIVE VALVE

A shock absorber has a pressure tube with a piston assembly slidably disposed within the pressure tube and attached to a piston rod. The piston assembly divides the pressure tube into an upper working chamber and a lower working chamber. The piston assembly includes a frequency dependent valve assembly attached to the piston rod which defines a housing attached to the piston rod and a spool valve assembly. The spool valve assembly includes a spool valve and a bypass valve assembly that controls fluid flow through bypass passage that bypasses the piston assembly. 1. A shock absorber comprising:a pressure tube defining a fluid chamber;a piston assembly disposed within said pressure tube, said piston assembly dividing said fluid chamber into an upper working chamber and a lower working chamber;a piston rod projecting out of said pressure tube, said piston assembly being attached to said piston rod; a housing attached to said piston rod, said housing defining a fluid cavity;', 'a spool valve assembly disposed within said fluid cavity, said spool valve assembly including a spool valve and a bypass valve assembly; wherein, 'a frequency dependent valve assembly attached to said piston rod, said frequency dependent valve assembly comprisingmovement of said spool valve within said fluid cavity controls an amount of fluid pressure required to open said bypass valve assembly.2. The shock absorber according to claim 1 , wherein said frequency dependent valve assembly controls fluid flow from said upper working chamber to said lower working chamber.3. The shock absorber according to claim 1 , wherein said frequency dependent valve assembly controls fluid flow from said lower working chamber to said upper working chamber.4. The shock absorber according to claim 1 , wherein said housing is attached to a piston post which defines a fluid passage extending between said lower working chamber and said fluid cavity.5. The shock absorber according to claim 1 , wherein said spool valve ...

LOWER-SIDE SPRING-RECEIVING MEMBER

A lower-side spring-receiving member of a suspension device, receiving a suspension spring structured to have a rising section at a lower side of the suspension spring, having a partially annular shape and including: a base end portion arranged at one end of the lower-side spring-receiving member wherein an end of the suspension spring is inserted into the base end portion; a slope portion arranged at the other end of the lower-side spring-receiving member and having a thickness in a cross-sectional view varying so as to follow a shape of the rising section of the suspension spring; and a holding portion that is arranged between the base end portion and the slope portion and holds the suspension spring, wherein the slope portion has a recess portion (Nk) formed on its bottom-surface; the recess portion includes a ridge portion is formed in a substantially mountain shape in a cross-sectional view taken along a radial direction of the partially annular shape and may be or may not be in contact with a mounting surface when no spring load of the suspension spring is applied. 1. A lower-side spring-receiving member , receiving a suspension spring at a lower side of the suspension spring that is structured to include a rising portion extending up from a non-elastically-deformable end turn portion of the suspension spring , the lower-side spring-receiving member and the suspension spring included in a suspension device , the lower-side spring-receiving memberhaving a partially annular shape, andcomprising:a base end portion arranged at one end of the lower-side spring-receiving member, wherein an end portion of the suspension spring is inserted in the base end portion;a slope portion arranged at the other end of the lower-side spring-receiving member and having a thickness in a cross-sectional view, the thickness varying in accordance with a shape of the rising portion of the suspension spring; anda holding portion arranged between the base end portion and the slope ...

Gyroscopic stabiliser

A gyroscopic stabiliser for stabilising motion of an object, the gyroscopic stabiliser comprising: a support for attaching to the object whose motion is to be stabilised; a gimbal rotatably supported by the support to be rotatable around a first axis relative to the support; a flywheel rotatably supported by the gimbal to be rotatable around a second axis relative to the gimbal, the second axis being orthogonal to the first axis; and a rotary damper for damping rotation of the gimbal around the first axis relative to the support; wherein the rotary damper comprises: a chamber containing a damping fluid; a vane that is rotatable within the chamber and that is coupled to the gimbal; and a flow passage allowing flow of the damping fluid from the chamber on one side of the vane to the chamber on the other side of the vane when the vane is rotated, wherein the flow passage comprises a flow valve configured to provide substantially the same flow rate of fluid through the flow passage for different torques applied to rotate the vane.

SUSPENSION ELEMENT SYSTEMS AND METHODS

A damper assembly includes a tubular member including a sidewall and a shoulder. The damper assembly includes a rod and a piston coupled to the rod. A secondary piston has a second contact surface, an opposing second surface, an inner cylindrical face defining a central aperture that receives the rod, and an outer cylindrical face. The opposing second surface includes one or more surface grooves, extending between the inner cylindrical face and the outer cylindrical face along the opposing second surface, and one or more bypass orifices disposed about the body member. The bypass orifices extend along the inner cylindrical face between the second contact surface and the opposing second surface. The secondary piston defines a channel extending between the inner cylindrical face and an outer periphery of the body member. The channel and bypass orifices form a fluid flow path when the piston contacts the secondary piston.

VEHICLE SUSPENSION DAMPER

A vehicle suspension damper for providing a variable damping rate. The vehicle suspension damper comprises a first damping mechanism having a variable first threshold pressure, a second damping mechanism having a second threshold pressure, and a compressible chamber in communication with a damping fluid chamber, wherein the second damping mechanism is responsive to a compression of said compressible chamber. 1a first damping mechanism having a variable first threshold pressure;a second damping mechanism having a second threshold pressure; anda compressible chamber in pressure communication with a damping fluid chamber;wherein said second damping mechanism is responsive to a compression of said compressible chamber.. A vehicle suspension damper for providing a variable damping rate, said vehicle suspension damper comprising: This application claims priority to and is a continuation of the co-pending patent application, Ser. No. 14/502,679, Attorney Docket Number FOX-0027L-US.CON entitled “VEHICLE SUSPENSION DAMPER,” with filing date Sep. 30, 2014, by Joshua Benjamin Yablon et al., which is incorporated herein, in its entirety, by reference.The application with Ser. No. 14/502,679 claims priority to and is a continuation of the patent application, Ser. No. 12/509,258 and now issued U.S. Pat. No. 8,869,959, Attorney Docket Number FOX-0027L-US entitled “VEHICLE SUSPENSION DAMPER,” with filing date Jul. 24, 2009, by Joshua Benjamin Yablon et al., which is incorporated herein, in its entirety, by reference.The application with Ser. No. 12/509,258 claims priority to the patent application, Ser. No. 61/227,775, Attorney Docket Number FOX-0027L-PRO entitled “VEHICLE SUSPENSION DAMPER,” with filing date Jul. 22, 2009, by Joshua Benjamin Yablon., which is incorporated herein, in its entirety, by reference.The application with Ser. No. 12/509,258 is a continuation-in-part and claims priority to the patent application, Ser. No. 12/407,610 and now issued U.S. Pat. No. 8,894,050, ...

DAMPING FORCE CONTROLLING SHOCK ABSORBER

A damping force variable shock absorber of the present disclosure is disclosed. The damping force variable shock absorber includes a cylinder having an inner tube and an outer tube filled with a fluid, a housing coupled to a lower end of a piston rod located inside of the inner tube and forming a connection passage therein, a magnet member provided inside the housing, a plunger moving by magnetic force of the magnet member, a first piston valve coupled to the outside of the housing to divide a compression chamber from a rebound chamber, and a second piston valve provided in the housing, wherein the connection passage is provided such that at least a part of the fluid flowing toward the first piston valve is bypassed to the second piston valve side by the opening and closing of the plunger. 1. A damping force variable shock absorber comprising:a cylinder having an inner tube and an outer tube filled with a fluid;a housing coupled to a lower end of a piston rod located inside of the inner tube and forming a connection passage therein;a magnet member provided inside the housing;a plunger moving by magnetic force of the magnet member;a first piston valve coupled to the outside of the housing to divide a compression chamber from a rebound chamber; anda second piston valve provided in the housing;wherein the connection passage is provided such that at least a part of the fluid flowing toward the first piston valve is bypassed to the second piston valve side by the opening and closing of the plunger.2. The damping force variable shock absorber according to claim 1 ,wherein the connection passage passes a first housing hole opened and closed by the plunger and a second housing hole provided between the first piston valve and the second piston valve, andwhen the plunger is moved to a hard mode the plunger closes the connection passage so that the fluid passes through the first and second piston valves, and when the plunger is moved in a soft mode the plunger opens the ...

MOVEMENT STAGE FOR A HYDRAULIC SHOCK ABSORBER AND SHOCK ABSORBER WITH THE MOVEMENT STAGE

A movement stage for a hydraulic shock absorber has a damping volume and a stage throttle with a valve disk, an analogue piston, and an elastic biasing means supported on the analogue piston and on the valve disk. The valve disk has a pressure surface defining a portion of the surface of a disk valve arranged upstream of an entry edge of a disk valve seat. The analogue piston has a pressure surface facing away from the biasing means. The valve disk pressure surface and the analogue piston pressure surface are impinged by damping fluid flowing out of the damping volume as the shock absorber moves in a movement direction. The analogue piston pressure surface is larger than the valve disk pressure surface when projected in the closing direction of the disk valve so that the analogue piston is displaced and the bias of the valve disk increases. 1. A movement stage for a hydraulic shock absorber comprising:a damping volume filled with an incompressible damping fluid;a stage throttle having a disk valve with a valve disk, an analogue piston, and an elastic biasing means configured for biasing the valve disk in a closing direction of the disk valve;said stage throttle being arranged so that the incompressible damping fluid flows through said stage throttle in a direction opposite to the closing direction of the disk valve as the hydraulic shock absorber moves in at least one movement direction;said valve disk being configured to generate a shock absorber resistance force;said stage throttle being supported on the analogue piston and on a support seat of the movement stage;said analogue piston having an analogue piston pressure surface arranged to face away from a biasing means;said valve disk having a valve disk pressure surface and a valve disk piston surface;said valve disk pressure surface being a portion of a surface of the valve disk that is arranged upstream of an entry edge of a disk valve seat;said valve disk piston surface being arranged to face away from said ...

SHOCK ABSORBER

A shock absorber includes a suction passage allowing flow only from a reservoir towards a pressure side chamber, a rectifying passage allowing flow only from the pressure side chamber towards an expansion side chamber, and a damping force variable valve allowing flow only from the expansion side chamber towards the reservoir. Large, and small and outer peripheral chambers in a bottom housing sandwich a free piston. The small chamber communicates the outer peripheral chamber with the expansion side chamber. The large chamber communicates with the pressure side chamber through first and second valves. During a contraction in which a piston moves downward, even in a uniflow-type shock absorber in which pressure in the expansion side chamber and the pressure side chamber become equal, the free piston can move downward due to a difference in pressure-receiving areas. Even if a stretching speed reaches a high range, the first and second valves are opened, and damping force is reduced. 1. A shock absorber , comprising:a cylinder;a piston slidably inserted into the cylinder, the piston defining an expansion side chamber and an pressure side chamber inside the cylinder;a reservoir;a suction passage that allows only a flow of liquid from the reservoir toward the pressure side chamber;a rectifying passage that allows only a flow of liquid from the pressure side chamber toward the expansion side chamber;a damping force adjusting unit that allows only a flow of liquid from the expansion side chamber toward the reservoir, the damping force adjusting unit being configured to change resistance provided to the flow of liquid;a housing that includes a pressure chamber including a small-cross-sectional-area portion and a large-cross-sectional-area portion;a free piston that includes: a small-piston portion slidably inserted into the small-cross-sectional-area portion of the pressure chamber; and a large-piston portion slidably inserted into the large-cross-sectional-area portion of ...

SUSPENSION CONTROL APPARATUS FOR A BICYCLE AND SUSPENSION CONTROL METHOD

Suspension control and method for controlling a damper device of a bicycle that includes a damper device having a controllable damping valve. The damper device serves to dampen a relative motion between a first and a second component. A control device and a memory device are provided. The control device and the memory device define a characteristic damper curve which is characteristic of a correlation between a damping force and a characteristic parameter of the relative motion between the first and second components. At least one electric operating device is provided by means of which the defined characteristic damper curve can be modified in at least two sections of the characteristic damper curve while riding. 1. A suspension control apparatus for an at least partially muscle-powered two-wheeled vehicle , comprising:at least one damper device having at least one controllable damping valve and being configured to serve to dampen a relative motion between a first component and a second component;a control device and a memory device;said control device and said memory device defining at least one characteristic damper curve that is characteristic of a correlation between a damping force and a parameter characteristic of a relative motion between the first and second components;at least one electric operating device configured to modify the defined characteristic damper curve during a ride of the two-wheeled vehicle, in at least two sections of the characteristic damper curve.2. The suspension control apparatus according to claim 1 , wherein the characteristic parameter is derived from a relative speed of the relative motion between the first and second components.3. The suspension control apparatus according to claim 1 , which comprises at least one sensor device claim 1 , and wherein:said control device and said at least one sensor device are configured and set up for periodically obtaining at least one characteristic value of a relative speed of the first ...

SHOCK ABSORBER

A valve seat member is provided in a cap member. A first sub valve is provided in another side chamber. A second sub valve is provided in a cap chamber formed between a bottom portion of the cap member and the valve seat member. In a second passage, an orifice is disposed on an upstream side or a downstream side from the first sub valve in flow by which the first sub valve is opened. In a region in which a piston speed is low, a valve of a second damping force generating mechanism is opened in a state in which a valve of a first damping force generating mechanism is closed. In a speed region in which the piston speed is higher than in another region, the valve of the first damping force generating mechanism and the valve of the second damping force generating mechanism are both opened. 1. A shock absorber comprising:a cylinder which is filled with a working fluid;a piston which is slidably provided in the cylinder and divides an inside of the cylinder into one side chamber and another side chamber;a piston rod which is connected to the piston and extends outside the cylinder;a first passage and a second passage through which the working fluid flows from a chamber on an upstream side to a chamber on a downstream side in the cylinder by a movement of the piston;a first damping force generating mechanism which is provided in the first passage provided in the piston and generates a damping force; anda second damping force generating mechanism which is provided in an annular valve seat member disposed in the other side chamber, is provided in the second passage which is parallel to the first passage, and generates a damping force,wherein the second damping force generating mechanism includesa first sub valve provided on one side of the second passage provided in the valve seat member and a second sub valve provided on another side of the second passage, anda bottomed tubular cap member provided between the piston and the valve seat member in the second passage,the valve ...

Aircraft thrust reverser system with hydraulic assist device

A thrust reverser system for a gas turbine engine includes a support structure, a transcowl, an actuator, and a hydraulic assist mechanism. The actuator is configured to supply an actuation force to the transcowl to thereby move the transcowl between the stowed and deployed positions. The hydraulic assist mechanism is coupled to the transcowl and is configured to react reverse thrust loads on the transcowl at least when the transcowl is translating between the stowed position and the deployed position.

Vibration Damper And Vehicle

A vibration damper for a motor vehicle with a hydraulic unit and at least one valve for controlling the volume flow to the hydraulic unit, wherein the at least one valve and the hydraulic unit are arranged outside of the tube elements of the vibration damper and a motor vehicle including such vibration damper. 11. A vibration damper () for a motor vehicle comprising:{'b': 2', '3, 'tube elements (, );'}{'b': '9', 'a hydraulic unit (); and'}{'b': 7', '8', '9', '7', '8', '9', '2', '3', '1, 'at least one valve (, ) for controlling a volume flow to the hydraulic unit (); and wherein the at least one valve (, ) and the hydraulic unit () are arranged outside of the tube elements (, ) of the vibration damper ().'}2617896. The vibration damper according to claim 1 , additionally comprising a housing () fastened to the vibration damper (); and wherein the at least one valve ( claim 1 , ) and the hydraulic unit () are arranged in the housing ().39. The vibration damper according to claim 1 , wherein the hydraulic unit () is configured as a hydraulic pump.47828202824303878. The vibration damper according to claim 1 , wherein the at least one valve ( claim 1 , ) comprises a valve housing () and a valve slide () which is movable in the valve housing () for at least partially closing at least one flow path ( claim 1 , claim 1 , ) of a fluid flowing through the at least one valve ( claim 1 , ).52078184426472052. The vibration damper according to claim 4 , wherein the valve slide () comprises pressure-impingement surface areas and wherein the valve ( claim 4 , ) has an input side ( claim 4 , ) and an output side ( claim 4 , ); the pressure-impingement surface areas of the valve slide () being substantially equally dimensioned for an opening pressure and a closing pressure; and the valve slide comprising a restriction () constructed for generating a pressure difference between an opening pressure and a closing pressure.6502020. The vibration damper according to claim 4 , additionally ...

GAS SPRING WITH DAMPENING

This invention concerns a gas spring having a working cylinder and therein a slidably arranged piston, whereas the working gas is, in order to provide for springing and dampening, optionally transferable between the working cylinder and the reservoir, characterized in that the reservoir is arranged in the piston rod. The gas or air spring according to this invention is self-dampening in both directions, i.e. at compression as well as at the extension. At compression it behaves as an air spring with dampening and at the extension it also behaves as an air spring with dampening, whereas both these damping effects can be, as regards the magnitude of the dampening, controlled independently from each other. 1. Gas spring having a working cylinder and therein slidably arranged piston , whereas the working gas is , in order to provide for springing and dampening , optionally transferable between the working cylinder and a reservoir , characterized in that the reservoir is arranged in the piston rod.2. Gas spring according to claim 1 , wherein the reservoir is made up by a hollow cylinder constituting the piston rod claim 1 , one end of which is closed up by the piston.3. Gas spring according to claim 1 , wherein in the piston claim 1 , there is at least one transfer opening claim 1 , provided with at least one gas flow control element.4. Gas spring according to claim 3 , wherein the gas flow control element is slidable axially with respect to the transfer opening claim 3 , and preferably it is a regulation cone or a ring or a combination of both.5. Gas spring according to claim 4 , wherein a controlling rod goes through the piston rod in order to axially adjust the gas flow control element claim 4 , whereas this controlling rod preferably having claim 4 , in the extreme positions claim 4 , back stops for the gas flow control element.6. Gas spring according to claim 5 , wherein on the controlling rod claim 5 , there are arranged springing means for returning of the gas flow ...

Hydraulic Shock-Absorber With Hydraulic Stop Member and Adjustment Device

A shock-absorber has an outer cylindrical tube, an inner cylindrical tube, a rod, a main piston and a hydraulic stop member received in a compression chamber and operating during an end section of the compression stroke of the shock-absorber to cause an increase in the hydraulic damping force. The hydraulic stop member has a cup-shaped body mounted in the compression chamber and a first auxiliary piston which is mounted on a cylindrical body rigidly connected to the main piston and is configured to sealingly slide in the cup-shaped body during an end section of the compression stroke, encompassing a working chamber with the cup-shaped body. A sliding member is slidably received inside the cylindrical body for opening or closing at least one first passage of the cylindrical body through which oil flows from the working chamber of the cup-shaped body to the compression chamber of the shock-absorber. 1. A hydraulic shock-absorber , particularly for a vehicle suspension , comprisingan outer cylindrical tube and an inner cylindrical tube extending coaxially to each other along a longitudinal axis (z) of the hydraulic shock-absorber,a rod arranged coaxially to said outer and inner cylindrical tubes and projecting partially from upper ends thereof,a main piston slidably mounted in the inner cylindrical tube for sliding along said longitudinal axis (z) and fixed to the rod, the main piston separating an internal volume of the inner cylindrical tube into a rebound chamber and a compression chamber, both containing an incompressible damping fluid, anda hydraulic stop member received in the compression chamber so as to operate during an end section of a compression stroke of the hydraulic shock-absorber to cause an increase in hydraulic damping force applied to an assembly formed by the rod and the main piston,wherein the hydraulic stop member comprises a cup-shaped body coaxially mounted in the inner cylindrical tube inside the compression chamber, and a first auxiliary ...

METHODS AND APPARATUS FOR COMBINED VARIABLE DAMPING AND VARIABLE SPRING RATE SUSPENSION

Pressure-sensitive vales are incorporated within a dampening system to permit user-adjustable tuning of a shock absorber. In one embodiment, a pressure-sensitive valve includes an isolated gas chamber having a pressure therein that is settable by a user. 1a cylinder; [ a fluid chamber;', 'a gas-filled reservoir; and', 'a floating piston movably disposed between and fluidically isolating said fluid chamber and said gas-filled reservoir; and, 'a remote reservoir, said remote reservoir having a housing separate from said cylinder, said remote reservoir fluidically coupled to said cylinder via a pathway, said remote reservoir comprising, a movable member, said movable member having a surface, said surface of said movable member exposed to said cylinder; and', 'a plurality of footed portions coupled to said movable member, each of said plurality of footed portions having a surface, said surface of each said plurality of footed portions exposed to said fluid chamber of said remote reservoir, each said surface of said plurality of footed portions having an area greater than an area of said surface of said movable member, said pressure-sensitive valve having a closed position wherein said movable member is disposed such that said plurality of footed portions obstruct fluid flow through said pathway., 'a pressure-sensitive valve disposed in said pathway, said pressure-sensitive valve configured to adjust damping of said vehicle suspension as a pressure change occurs within said cylinder, said pressure-sensitive valve further comprising], 'a piston assembly comprising a piston and piston rod within said cylinder;'}. A vehicle suspension damper comprising: This application claims priority to and is a continuation of the co-pending patent application, U.S. patent application Ser. No. 16/564,535, filed on Sep. 9, 2019, entitled “METHODS AND APPARATUS FOR COMBINED VARIABLE DAMPING AND VARIABLE SPRING RATE SUSPENSION”, by Dennis K. Wootten et al., Attorney Docket Number FOX-0034US ...

LOAD DEPENDENT DAMPER FOR A VEHICLE SUSPENSION SYSTEM

A valve assembly for a vehicle suspension system includes a valve body, a first flow controller, a first plunger, a second flow controller, and a second plunger. The valve body defines a first inlet port, a first outlet port, a first chamber connected to the first inlet port and the first outlet port, a second chamber, a second inlet port, a second outlet port, a third chamber connected to the second inlet port and the second outlet port, and a fourth chamber. The first flow controller is positioned within the first chamber. The first plunger is positioned between the first chamber and the second chamber. The second flow controller is positioned within the third chamber. The second plunger is positioned between the third chamber and the fourth chamber. 1. A valve assembly for a vehicle suspension system , the valve assembly comprising: a first inlet port;', 'a first outlet port;', 'a first chamber connected to the first inlet port and the first outlet port;', 'a second chamber;', 'a second inlet port;', 'a second outlet port;', 'a third chamber connected to the second inlet port and the second outlet port; and', 'a fourth chamber;, 'a valve body defininga first flow controller positioned within the first chamber;a first plunger positioned between the first chamber and the second chamber;a second flow controller positioned within the third chamber; anda second plunger positioned between the third chamber and the fourth chamber.2. The valve assembly of claim 1 , wherein the valve body defines a spring port configured to receive pressurized gas claim 1 , wherein the second chamber and the fourth chamber are fluidly coupled together claim 1 , and wherein the second chamber and the fourth chamber are both fluidly coupled to the spring port.3. The valve assembly of claim 1 , wherein the valve body defines a first spring port and a second spring port claim 1 , wherein each of the first spring port and the second spring port is configured to receive pressurized gas claim 1 ...

Pressure damping device

A pressure damping device includes: a cylinder; a piston provided movably in the cylinder in an axial direction of the cylinder, and formed to have a plurality of channels for liquid; a moving and partitioning member located between the piston and the cylinder, and provided movably from one end to the other end in the axial direction of a movable region provided in the piston, and configured to partition a space in the cylinder into a first liquid chamber and a second liquid chamber for storing the liquid; a first opening and closing member configured to open and close an opening in at least a part of the plurality of channels of the piston and open the opening; and a second opening and closing member configured to open and close an opening in at least a part of the plurality of channels and open the opening.

Three Speed Adjustable Shock Absorber Having One Or More Microvalves

An adjustable shock absorber includes a housing defining an enclosed working space. A wall is formed in the working space and separates the working space into first and second fluid chambers. A compression valve is formed in the wall and a microvalve is attached to the compression valve and is operable to control fluid flow through the compression valve.

GEOMETRICALLY NONLINEAR VIBRATION ISOLATION SYSTEM

The geometrically nonlinear isolation system of the present invention includes a bearing platform, an isolator and a damper. The isolator is connected with the bearing platform and used for providing resilience against horizontal relative displacement between the bearing platform and the isolator. The damper is pin-jointed to the bearing platform and has an axis orthogonal or oblique to the horizontal direction. Accordingly, when the bearing platform and the isolator move with respect to each other along the horizontal direction, the angle between the axis of the damper and the horizontal direction would change with the horizontal displacement, and the damper provides damping force along a direction parallel to the axis of the damper so as to enhance horizontal vibration isolation effect. 1. A geometrically nonlinear vibration isolation system , comprising:a bearing platform for a vibration-isolated object disposed thereon;an isolator connected to the bearing platform and configured to cooperate with the bearing platform for providing resilience against relative displacement in a horizontal direction between the bearing platform and the isolator; anda damper pin-connected to the bearing platform, wherein (i) an axis of the damper is orthogonal to or oblique to the horizontal direction when no external force is applied thereto, (ii) the relative displacement in the horizontal direction between the bearing platform and the isolator induces a change in an angle between the axis of the damper and the horizontal direction, and (iii) the damper provides a damping force along a direction parallel to the axis against the relative displacement.2. The geometrically nonlinear vibration isolation system of claim 1 , wherein the isolator is disposed under the bearing platform claim 1 , and the damper has two opposite ends pin-connected to the bearing platform and the isolator claim 1 , respectively.3. The geometrically nonlinear vibration isolation system of claim 2 , wherein ...

DAMPER CONTROL DEVICE

A damper control device feeds back a pressure within an extension-side chamber to control an extension-side solenoid valve that adjusts the pressure within the extension-side chamber, and feeds back a pressure within a compression-side chamber to control a compression-side solenoid valve that adjusts the pressure within the compression-side chamber. The damper control device performs a compression-side reduction correction which reduces a compression-side current supplied to the compression-side solenoid valve during extension of a damper, and performs an extension-side reduction correction which reduces an extension-side current supplied to the extension-side solenoid valve during contraction of the damper. 1. A damper control device for controlling a damping force of a damper having an extension-side chamber and a compression-side chamber which are filled with a working fluid , whereinthe damper control device feeds back a pressure within the extension-side chamber to control an extension-side solenoid valve that adjusts the pressure within the extension-side chamber, and feeds back a pressure within the compression-side chamber to control a compression-side solenoid valve that adjusts the pressure within the compression-side chamber,the damper control device performs a compression-side reduction correction which reduces a compression-side current supplied to the compression-side solenoid valve during extension of the damper, andthe damper control device performs an extension-side reduction correction which reduces an extension-side current supplied to the extension-side solenoid valve during contraction of the damper.2. The damper control device according to claim 1 , whereinthe extension-side reduction correction is a correction that subtracts an extension-side reduction amount calculated based on an extension/contraction speed of the damper from the extension-side current, andthe compression-side reduction correction is a correction that subtracts a compression ...

Self pressurizing squeeze film damper

A fluid damping structure is provided that includes an inner and outer annular elements, first and second ring seals, first and second outer annular seals. The inner annular element has an outer radial surface and a plurality of annular grooves disposed in the outer radial surface. The outer annular element has an inner radial surface. A damping chamber is defined by the inner and outer annular elements, and the first and second inner ring seal. A first lateral chamber is disposed on a first axial side of the damping chamber. A second lateral chamber is disposed on a second axial side of the damping chamber. A plurality of fluid passages are disposed in at least one of the inner annular element or the inner ring seals. The fluid damping structure is configurable in an open configuration and a closed configuration.

SYSTEMS AND METHODS FOR DAMPING PHOTOVOLTAIC PANEL ARRAYS

Damper includes a housing having proximal and distal ends, a first attachment point proximate the distal end of the housing, a rod having proximal and distal ends at least partially disposed within the housing and moveable relative to the housing between an extended position and a compressed position, a second attachment point proximate the proximal end of the rod, a piston joined to the rod within the housing proximate the distal end of the rod, the piston including a bypass groove having a flow area defined therein to allow fluid to flow from a first side of the piston to an opposing side of the piston, and a first washer disposed proximate a first end of the piston and at least partially covering the flow area of the bypass groove. 1. A damper for reducing vibrations in a rotatable photovoltaic panel array , wherein the damper is configured to provide a first damping force during slow movement of the photovoltaic array and a second damping force during fast movement of the array , the second damping force being greater than the first damping force , the damper comprising:a housing having proximal and distal ends;a first attachment point proximate the distal end of the housing;a rod having proximal and distal ends at least partially disposed within the housing and moveable relative to the housing between an extended position and a compressed position;a second attachment point proximate the proximal end of the rod;a piston joined to the rod within the housing proximate the distal end of the rod, the piston including a bypass groove having a flow area defined therein to allow fluid to flow from a first side of the piston to an opposing side of the piston; anda first washer disposed proximate a first end of the piston and at least partially covering the flow area of the bypass groove, the first washer configured to deflect to uncover the flow area of the bypass groove at a selected maximum damping force such that the damper assembly is configured to apply no more ...

Vibration Damper and Motor Vehicle

A vibration damper includes at least one tube element and a piston which is displaceable in axial direction in the tube element, a piston rod connected to the piston, and a damping force generating device, wherein the piston divides the working space in the interior of the tube element into a first working space on the piston rod side and a second working space remote of the piston rod, and wherein a hydraulic transmission element is arranged in or at the piston, and the transmission behavior of the hydraulic transmission element depends on the movement of the piston or of the piston rod, wherein the hydraulic transmission element encloses a compensation volume. The size of the compensation volume of the transmission element depends on the annular area of the piston which is the difference of the cross-sectional area of the piston and the cross-sectional area of the piston rod. 113-. (canceled)141. A vibration damper () comprising:{'b': '2', 'at least one tube element () having a working space;'}{'b': '3', 'sub': 'r', 'a piston () having a cross-sectional area and an annular area (A) and being displaceable in said working space;'}{'b': 4', '3, 'a piston rod () having a cross-sectional area and being connected to said piston ();'}{'b': 3', '2', '5', '4', '6', '4, 'said piston () dividing said working space in the interior of said tube element () into a first working space () on a side of the piston rod () and a second working space () remote of said piston rod ();'}{'b': '12', 'a damping force generating device () hydrodynamically communicating with said working space;'}{'b': 13', '5', '6', '13', '3', '4', '13', '15', '15', '13', '3', '3', '4, 'sub': r', 'r, 'a hydrodynamic transmission element () having a transmission behavior and being arranged between said first working space () and said second working space (), the transmission behavior of said transmission element () depending on a movement of said piston () or of said piston rod (); said hydrodynamic ...

Shock absorber

A position-sensitive shock absorber 1 comprising an internal fluid space 3, a piston 5 and fluid system 7. The piston divides the internal fluid space into a compression side 3 a and a rebound side 3 b. The fluid system fluidly connects the compression side to the rebound side. The fluid system comprises a chain 9 of three or more external fluid spaces 9 a, 9 b, 9 c, 9 d external to the internal fluid space, space flow-control-arrangements 27 i, 27 ii, 27 iii , and passage arrangements 25 a, 25 b, 25 c, 25 d mutually spaced along the internal fluid space. Each of the space flow-control-arrangements is configured to mutually fluidly connect a respective adjacent two of the external fluid spaces. Each of the external fluid spaces has a respective one of the passage arrangements. Each of the passage arrangements comprises one or more passages opening to the internal fluid space. The piston is movable along the internal fluid space to at least one of pass (at least one of the passages) and at least restrict flow through at least one of the passages.

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes: accessing a set of control signals, wherein at least a first control signal of the set of control signals includes a set of values associated a pressure applied to a vehicle component of a vehicle; accessing a set of predetermined vehicle component base-level pressure values associated with the vehicle component; comparing the set of values associated with a pressure applied to the vehicle component with the set of predetermined vehicle component base-level pressure values; based on said comparing, calculating an approximate shift in a center of gravity of the vehicle; monitoring a state of at least one valve; and based on the calculating and the monitoring, determining a control mode for said at least one vehicle suspension damper that, if actuated, would compensate the vehicle for the shift in the center of gravity. 1. A non-transitory computer readable storage medium having stored thereon , computer-executable instructions that , when executed by a computer , cause the computer to perform a method for controlling vehicle motion , said method comprising:accessing a set of control signals, wherein a first control signal of said set of control signals comprises a measured vehicle speed value associated with a movement of a vehicle, a second control signal of said set of control signals comprises a measured wheel speed value associated with a movement of a wheel of said vehicle, a third control signal of said set of control signals comprises a measured vehicle suspension damper position value of a movement of a vehicle suspension damper of said vehicle and a fourth control signal of said set of control signals comprises a measured vehicle suspension damper velocity value associated with said movement of said vehicle suspension damper, wherein said vehicle suspension damper is coupled with a frame of said vehicle;comparing said measured vehicle speed value, said wheel speed value, said vehicle ...

BYPASS FOR A SUSPENSION DAMPER

A vehicle suspension damper comprises a cylinder and a piston assembly including a damping piston along with working fluid within the cylinder. A bypass permits fluid to avoid dampening resistance of the damping piston. A fluid path through the bypass is controlled by a valve that is shifted by a piston surface when the contents of at least one predetermined volume is injected against the piston surface which acts upon the valve. In one embodiment, the bypass is remotely operable. 1a cylinder containing a fluid and a damping piston operable to travel within said fluid in said cylinder, said vehicle suspension damper further including a passageway through said damping piston and limiting a flow rate of said fluid through said damping piston in at least one direction;a bypass pathway in fluid communication with said cylinder, said bypass pathway providing a path for said fluid to travel between a first side and a second side of said damping piston; a valve body;', 'a valve piston housed within said valve body, said valve piston having a valve piston surface;', 'a shaft extending from said valve piston;', 'a valve member coupled to said shaft, said valve member telescopically mounted to said shaft and said valve member movable with respect to said shaft wherein a gap is formed between said valve member and an end of said shaft, and wherein said valve is solenoid-operated;', 'a spring member mounted on said shaft between said valve member and said, 'a valve for controlling a flow of said fluid through said bypass pathway, said valve comprisingvalve piston, said spring member biasing said valve member away from said valve piston; and wherein said valve is remotely controllable.. A vehicle suspension damper comprising: This application claims priority to and is a continuation of the co-pending patent application, U.S. patent application Ser. No. 16/152,118, filed on Oct. 4, 2018, entitled “BYPASS FOR A SUSPENSION DAMPER”, by John Marking, Attorney Docket Number FOX- ...

Hydraulic Damper With An X-Flow Piston Assembly

A hydraulic damper including a piston assembly having a piston body including at least two first channels and at least two second channels. The first and second channels are sloped. A compression side of each of the first channels is positioned radially outward relative to a rebound side. A rebound side of each of the second channels is positioned radially outward relative to a compression side. At least one main disc at least partially covers the rebound side of each of the first channels, and at least one main disc at least partially covers the compression side of each of the second channels. At least one supplementary channel is positioned radially inward with respect to the first and second channels. At least one supplementary disc at least partially covers at least one of a rebound side and a compression side of the at least one supplementary channel.

Hydraulic damping device

The hydraulic damper 1 includes: a cylinder 11 storing oil; a piston unit connected to a rod moving in an axial direction and configured to move within the cylinder 11; an outer cylinder body 12 outside of the cylinder 11 and forming a communication path L through which oil flows along with movement of the piston unit; a damper case 13 outside of the cylinder 11 and forming a reservoir chamber R to retain oil; a damping force changer 52 external to the cylinder 11 and configured to generate a damping force by throttling flow of oil along with movement of the piston unit and configured to change magnitude of the damping force; and a joint piece 61 forming a channel 61R of oil from the communication path L to the damping force changer 52 and including an external valve to control flow of oil flowing through the channel 61R.

Shock Absorber Base Valve Assembly

A damper having a pressure tube, a piston, a hydraulic compression stop assembly, and a base valve assembly is provided. The piston is arranged in sliding engagement inside the pressure tube and divides the pressure tube into first and second working chambers. The hydraulic compression stop assembly is positioned in the second working chamber and includes a sleeve and a plunger. The sleeve extends from the base valve assembly to define a sleeve cavity. The plunger extends from the piston and/or piston rod and is designed to slide into the sleeve cavity when the piston approaches a fully compressed position of the damper. The base valve assembly includes intake passageways and an intake valve. The intake valve is constructed as a one-way valve that permits fluid to flow in one direction into the sleeve cavity through the intake passageways. 1. A damper comprising:a pressure tube extending longitudinally between a first pressure tube end and a second pressure tube end;a piston arranged in sliding engagement inside the pressure tube for movement between an extended position and a compressed position;said piston dividing the pressure tube into a first working chamber and a second working chamber;a piston rod coupled to the piston;a base valve assembly positioned at the second pressure tube end; anda hydraulic compression stop assembly positioned in the second working chamber, the hydraulic compression stop assembly including a sleeve extending from the base valve assembly to define a sleeve cavity and a plunger extending from at least one of the piston and the piston rod, the sleeve being configured to receive the plunger in sliding engagement with the sleeve cavity when the piston approaches the compressed position,wherein the base valve assembly includes at least one intake passageway and an intake valve, the intake valve being constructed as a one-way valve that permits fluid to flow in one direction into the sleeve cavity through the at least one intake passageway.2 ...

Compressible Fluid Device Comprising Safety Device and Method of Protecting a Compressible Fluid Device

The present disclosure provides a compressible fluid device (), such as a gas spring. The device comprises a casing () defining a compression chamber (), a piston (), which is movable in the chamber (), and a safety member () placed in such a manner as to be struck by the piston () in the event of the piston overstriking, whereby at least some of the compressible fluid is evacuated from the compression chamber (). The device further comprises a pre-strike member (), that is arranged to be struck before the safety member () is struck, such that the safety member () is only struck once a predetermined overstroke force has been achieved. 1. A compressible fluid device , such as a gas spring , comprising:a casing defining a compression chamber,a piston movable in the chamber, anda safety member placed in such a manner as to be struck by the piston in the event of the piston overstriking, whereby at least some of the compressible fluid is evacuated from the compression chamber, characterized bya pre-strike member, arranged to be struck before the safety member is struck by the piston, such that the safety member is only struck once a predetermined compressive overstroke force has been achieved.2. The device as claimed in claim 1 , wherein the safety member extends inwardly from a chamber wall portion and wherein the pre-strike member extends further inwardly from the chamber wall than the safety member.3. The device as claimed in claim 1 , wherein the pre-strike member comprises a portion which is arranged to be deformed when struck with a predetermined force claim 1 , whereby the safety member is moveable relative to the chamber wall only when such deformation has been achieved.4. The device as claimed in claim 1 , wherein the safety member comprises a strike portion that is exposed in the compression chamber and a sealing portion claim 1 , which claim 1 , until the safety member has been struck claim 1 , is arranged to prevent the compressible fluid from leaving the ...

Valve structure of shock absorber

A valve structure of a shock absorber includes a piston to which a first communication passage and a second communication passage are provided, and a load application member that applies an initial load to a first leaf valve. The initial load is applied to the first leaf valve within a range between the inside in the radial direction from a first seat part and the outside in the radial direction from an abutting part of the piston, the first seat part being positioned on the outside in the radial direction of the first communication passage.

VEHICLE HEIGHT ADJUSTING APPARATUS

A vehicle height adjusting apparatus includes: a cylindrical body internally partitioned into a plurality of oil chambers by a partition wall provided along an axis, the oil chambers filled with oil, and respectively provided with cylindrical body oil holes to be connected to an outside; one operating portion rotatably provided on the cylindrical body, and rotated to be moved along the axis; pistons moved along the axis by the operating portion, and received in the oil chambers respectively; and a plurality of damper devices respectively provided with damper oil holes into which the oil flowing out of the cylindrical body oil holes when the pistons move flows, the damper devices that can adjust a vehicle height by amounts of the oil filled into the damper devices through the damper oil holes, and that can absorb impact energy inputted on a wheel. 1. A vehicle height adjusting apparatus comprising:a cylindrical body that is to be attached to a vehicle body, and that is shaped like a cylinder, the cylindrical body that is internally partitioned into a plurality of oil chambers parallel to an axis by a partition wall provided along the axis, the oil chambers filled with oil, and respectively provided with cylindrical body oil holes to be connected to an outside;one operating portion that is rotatably provided on the cylindrical body, and that can be rotated to be moved along the axis;pistons that can be moved along the axis by the operating portion, and that are received in the plurality of oil chambers parallel to the axis, respectively; anda plurality of damper devices that are respectively provided with damper oil holes into which the oil flowing out of the cylindrical body oil holes when the pistons move flows, the damper devices that can adjust a vehicle height by amounts of the oil filled into the damper devices through the damper oil holes, and that can absorb impact energy inputted on a wheel.2. The vehicle height adjusting apparatus according to claim 1 , ...

PRESSURIZED TELESCOPIC FRONT FORK LEG, FRONT FORK AND VEHICLE

The invention relates to a telescopic fork leg for a front fork of a vehicle, comprising an outer tube and an inner tube being telescopically arranged relative each other, and a main piston arrangement arranged in the inner tube configured to regulate a damping fluid for damping movements between two parts of the vehicle when in use. Further, the telescopic fork leg comprises a pressurizing piston arranged in the inner tube and configured to pressurize the damping fluid, the pressurizing piston comprising an axial first end portion facing the main piston arrangement, and further comprising an axial opposite second end portion facing a pressurized volume. Further, the telescopic fork leg comprises a fluid reservoir for holding a pressurized fluid, the fluid reservoir being fluidly coupled to the pressurized volume. Further, the pressurizing piston is coaxially arranged with the main piston arrangement, inside the inner tube and the fluid reservoir is at least partly arranged on an outside of the inner tube. Also a front fork and a vehicle having fork legs according to above are claimed. 2. The front fork according to claim 1 , wherein said fluid reservoir is arranged in a fork leg bottom body.3. The front fork according to claim 1 , wherein said pressurizing piston comprises a first sealing means configured to seal against the damping fluid claim 1 , and a second sealing means configured to seal against the pressurized fluid claim 1 , wherein said first and second sealing means are axially displaced along the axial extension of the pressurizing piston.4. The front fork according to claim 1 , wherein said damping fluid is a liquid claim 1 , and said pressurized fluid is a gas claim 1 , such as air claim 1 , nitrogen claim 1 , CO.5. The front fork according to claim 1 , further comprising a cylinder case arranged inside said inner tube claim 1 , wherein said pressurizing piston is arranged inside said cylinder case.6. The front fork according to claim 1 , further ...

MODULAR ELECTRONIC DAMPING CONTROL

A modular electronic damping control system is described and includes a damping component located at a vehicle suspension location. The modular electronic damping control system also includes a control system configured to control the damping component, and determine the type of damping component present. Also, the control system is configured to automatically tune a vehicle's suspension based on the type of damping component present, and automatically monitor the damping component and determine when a change has been made to the damping component so that the control system can then automatically re-tune the vehicle's suspension based on the change to the damping component. 1. A modular electronic damping control system comprising:at least one damping component located at a vehicle suspension location; anda control system configured to control said at least one damping component located at said vehicle suspension location, said control system configured to determine a type of at least one damping component, said control system configured to automatically tune a vehicle suspension for a vehicle based on a determined type of said at least one damping component, and wherein said control system is further configured to automatically monitor said at least one damping component and determine when a change has been made to said at least one damping component, and said control system configured to automatically re-tune said vehicle suspension based on said change to said at least one damping component.2. The modular electronic damping control system of claim 1 , further comprising:a graphical user interface (GUI) for presenting damping configuration and operation information in a user interactive format.3. The modular electronic damping control system of claim 1 , further comprising: 'a touch input capability configured to receive an input from a user via a user interaction with said HMI.', 'a human machine interface (HMI) configured to present vehicle suspension setting ...

LIMITING SYSTEM FOR A VEHICLE SUSPENSION COMPONENT

The damper assembly includes a tubular member, a rod, a primary piston, a secondary piston, and a resilient member. The tubular member includes a sidewall and a cap positioned at an end of the sidewall. The sidewall and the cap define an inner volume. The sidewall includes a shoulder separating the tubular member into a first portion and a second portion. The resilient member is disposed between the secondary piston and the cap and thereby is positioned to bias the secondary piston into engagement with the shoulder. 1. A damper assembly , comprising:a tubular member including a sidewall and a cap positioned at an end of the sidewall, the sidewall and the cap defining an inner volume, wherein the sidewall comprises a first portion fixedly coupled with a second portion of the sidewall, wherein the first portion and the second portion define a shoulder of the sidewall;a rod extending within the inner volume;a primary piston positioned within the inner volume and coupled to the rod, the primary piston defining a first contact surface; anda secondary piston having a second contact surface, an opposing second surface, and an inner face that receives the rod, the second contact surface forming a passage extending between the inner face and an outer periphery of the secondary piston, wherein the primary piston and the secondary piston separate the inner volume into a first working chamber, a second working chamber, and a recoil chamber; andwherein the first contact surface and the passage are configured to cooperatively define a flow conduit upon engagement between the primary piston and the secondary piston;wherein the second contact surface is configured to engage the first contact surface such that an open flow path is formed from the recoil chamber through (i) an aperture of the secondary piston and (ii) the flow conduit, upon engagement between the primary piston and the secondary piston.2. The damper assembly of claim 1 , wherein the primary piston is moveable within ...

HIGH PRESSURE GAS SPRING CONTROLS FOR IMPROVED VEHICLE LEVELING

A suspension system includes a spring assembly including a gas spring and an accumulator, and a controller. The accumulator is coupled to the gas spring and includes a bladder. The accumulator has a compressed state and an uncompressed state. The controller is configured to a) determine a target amount of gas in the spring assembly and b) adjust the amount of gas in the spring assembly towards the target amount of gas based on a pressure difference across the bladder. 1. A suspension system , comprising: a gas spring; and', 'an accumulator coupled to the gas spring and including a bladder, the accumulator having a compressed state and an uncompressed state; and, 'a spring assembly including determine a target amount of gas in the spring assembly; and', 'adjust the amount of gas in the spring assembly towards the target amount of gas based on a pressure difference across the bladder., 'a controller configured to2. The suspension system of claim 1 , further comprising at least one of:a first sensor arranged to detect a first pressure on a first side of the bladder; anda second sensor arranged to detect a second pressure on a second side of the bladder opposite the first side,wherein the controller is configured to determine the target amount of gas based on at least one of the first pressure and the second pressure.3. The suspension system of claim 2 , wherein the accumulator includes a volume of gas located therein claim 2 , and wherein the controller is configured to determine the target amount of gas by multiplying the volume of gas in the accumulator with one of the first pressure and the second pressure.4. The suspension system of claim 3 , wherein the controller is configured to multiply the volume of gas in the accumulator with the greater of the first pressure and the second pressure.5. The suspension system of claim 4 , wherein the first pressure is a preset pressure.7. The suspension system of claim 5 , wherein the controller is configured to:estimate a mass ...

PISTON VALVE ASSEMBLY FOR SHOCK ABSORBER

A piston valve assembly for a shock absorber is disclosed. In a high-frequency mode, a damping force control is achieved through an open passage that is always opened. In a low-frequency mode, a guide assembly moves downward due to an increase in a pressure of a first pressure chamber by a fluid moved through an inlet hole of the first pressure chamber. At this time, the guide assembly blocks the open passage and the damping force control is achieved through only a rebound passage. Consequently, it is possible to solve a fluid bottle neck through a passage formation. A disk is installed on the inlet hole to prevent a continuous increase in the pressure of the first pressure chamber, thereby effectively preventing the reduction of the damping force. 1. A piston valve assembly for a shock absorber , comprising:a piston rod reciprocating within a cylinder;a main piston mounted on the piston rod to partition the cylinder into upper and lower chambers, wherein a plurality of compression passages and a plurality of rebound passages pass through the main piston in a vertical direction;a pressure valve mounted on the piston rod and disposed below the main piston, wherein a first pressure chamber having a ring shape around the piston rod is formed in a bottom surface of the pressure valve and an inlet hole is formed in an upper portion of the first pressure chamber;a disk installed on the inlet hole so as to prevent a continuous increase in a pressure of the first pressure chamber;a lower retainer mounted on the piston rod and disposed below the pressure valve, wherein a top surface of the piston rod is opened;a plurality of bypass passages formed on an outer periphery of the piston rod from an upper side of the main piston to an upper side of the lower retainer along a vertical length direction;a guide assembly mounted on the piston rod and disposed between the pressure valve and the lower retainer to surround an outer periphery of the pressure valve and a bottom surface of ...

INERTING DAMPER WITH REGRESSIVE CHARACTERISTICS

Apparatus and methods for damping a vehicle suspension. Various embodiments of dampers in hydraulic flowpaths are adapted and configured to provide shock absorber reactive forces resulting more from the pressure drop needed to overcome the inertia of the hydraulic fluid. Further, various embodiments include valving that provides a regressive characteristic to the shock absorber reactive load characteristics. 1. A method for hydraulically damping a suspension of a vehicle , comprising:providing a shock absorber including a piston attached to a rod and slidable within a chamber and sealingly dividing the chamber into first and second internal compartments, the rod being attached to one of the vehicle or the suspension;providing an inertial flowpath for hydraulic fluid adapted and configured to have substantially more pressure drop required to overcome the inertia of accelerating a flow of hydraulic fluid through the flowpath than the pressure drop required to overcome the viscous drag of flowing the same flow of hydraulic fluid through the flowpath;providing a valve with a first fluid port and a second fluid port and capable of switching from a first more viscously restrictive flowpath for hydraulic fluid between the first port and second port and to a second less viscously restrictive flowpath for hydraulic fluid between the first port and second port;pumping hydraulic fluid by the piston from one of the internal compartments through the inertial flowpath;pumping hydraulic fluid by the piston from the one internal compartment through the first restrictive flowpath of the valve if the fluid pressure at the valve first fluid port is less than a predetermined value or through the second restrictive flowpath if the fluid pressure at the valve first fluid port is greater than the predetermined value; andreturning the pumped hydraulic fluid to the other internal compartment.2. The method of wherein the valve includes a valve member movable between a first position that ...

SUPPORT DAMPING APPARATUS AND VEHICLE USING SUPPORT DAMPING APPARATUS

The present invention relates to a support damping apparatus and a vehicle using the support damping apparatus. The support damping apparatus includes a support spring, a force measuring element and a damper. The damper includes a hydraulic cylinder, a valve assembly and a control assembly. The force measuring element measures a support force value of the support damping apparatus for a supported object, and compares the support force value with a target force value. The damping force value of the damper is controlled by the control assembly in a mechanical, hydraulic or electric manner according to a comparison result so as to adjust the support force value of the support damping apparatus, so that the support force value of the support damping apparatus is equal to or approximate to the target force value. The present invention also relates to a vehicle with the support damping apparatus. 1. A support damping apparatus , comprising:{'b': 4', '100', '200, 'a support spring (), a force measuring element () and a damper (), wherein'}{'b': 200', '17', '300', '400, 'the damper () comprises a hydraulic cylinder (), a valve assembly () and a control assembly (),'}{'b': 100', '400', '300', '200, 'wherein the force measuring element () is used to measure a support force value of the support damping apparatus for a supported object; the control assembly () is used to compare the support force value with a target force value, and control the damping force value of the valve assembly () in a mechanical, hydraulic or electric manner according to a comparison result so as to adjust a stretching damping force value or compression damping force value of the damper (), so that the support force value of the support damping apparatus is equal to or approximate to the target force value;'}a damping adjusting method is as follows:{'b': 200', '200', '200', '200, 'when the support force value of the support damping apparatus is greater than the target force value, and the damper () is ...

Damper With Flexible Floating Disc

A damper system for a vehicle including a pressure tube, piston assembly, and stroke dependent damper assembly. The stroke dependent damper assembly is coupled to a piston rod at a position below the piston assembly. The stroke dependent damper assembly includes a disc chamber that slidably receives a flexible floating disc. The disc chamber has proximal and distal chamber surfaces, which can include holes. The flexible floating disc is moveable between a first position where it contacts the proximal chamber surface and a second position where it contacts the distal chamber surface. The proximal chamber surface defines a proximal tapered cavity and the distal chamber surface defines a distal tapered cavity. The flexible floating disc is resilient and can flex into the proximal tapered cavity or the distal tapered cavity when it makes contact with the proximal chamber surface or the distal chamber surface. 1. A damper system for a vehicle , comprising:a pressure tube containing a hydraulic fluid;a piston rod extending within the pressure tube along a longitudinal axis;a first piston assembly slidably fitted in the pressure tube for movement along the longitudinal axis, the first piston assembly coupled to the piston rod and separating the pressure tube into a first working chamber and a second working chamber, the first piston assembly including a first valve assembly that controls fluid flow between the first working chamber and the second working chamber; anda damper assembly including a damper housing coupled to the piston rod, a disc chamber, and a flexible floating disc slidably received in the disc chamber, the flexible floating disc being unbiased and free floating in the disc chamber for movement between a first position and a second position, the disc chamber bounded by a proximal chamber surface defining a proximal tapered cavity and a distal chamber surface defining a distal tapered cavity, the flexible floating disc being made of a resilient material such ...

SHOCK ABSORBER

A shock absorber includes: a cylinder; a piston that is movably inserted into the cylinder and defines an extension side chamber and a compression side chamber inside the cylinder; an extension side damping passage and a compression side damping passage that communicate the extension side chamber with the compression side chamber; a pressure chamber that communicates with the extension side chamber and the compression side chamber; and an elastic member that defines a first chamber communicating with the extension side chamber and a second chamber communicating with the compression side chamber inside the pressure chamber. 1. A shock absorber comprising:a cylinder;a piston that is movably inserted into the cylinder and defines two operation chambers inside the cylinder;a damping passage that communicates the two operation chambers with each other;a housing that forms a pressure chamber in the housing to communicate with the two operation chambers;a tube that is sandwiched in the housing from both sides in an axial direction; andan elastic member that is integrated with an inner circumference of the tube by baking to define the pressure chamber as a first chamber communicating with the one operation chamber and a second chamber communicating with the other operation chamber.2. (canceled) The present invention relates to a shock absorber.Conventionally, a shock absorber is interposed between a vehicle body and an axle of a vehicle and is used to suppress a vibration of the vehicle body. For example, as disclosed in JP 4644572 (B2) and JP 4726049 (B2), the shock absorber includes a cylinder, a piston that is slidably inserted into the cylinder, a piston rod of which one end is connected to the piston and the other end extends to the outside of the cylinder, upper and lower chambers that are formed inside the cylinder and defined by the piston, first and second passages that communicate with the upper and lower chambers, a pressure chamber that is provided in the course ...

RESETTING SEMI-PASSIVE STIFFNESS DAMPER AND METHODS OF USE THEREOF

A resetting semi-passive stiffness damper (RSPSD) for use in damping movement. Embodiments of such a RSPSD include, for example, a pistoned cylinder connected to a grooved rack, and a spring-loaded lever arranged between the rack and a slotted channel above the rack. One end of the lever is allowed to move pivotably and vertically within the channel as the other end moves with the rack. A sensor is provided and communicates with a bypass valve on the cylinder. A change in the direction of movement of the rack forces the lever further into the slotted channel where it eventually triggers the sensor, which then sends a signal to open the bypass valve. As the rack continues to move, the lever eventually reverses direction, and is forced back down the slotted channel by a return spring. Upon leaving the sensing range of the sensor, the valve is signaled to close. 1. A resetting semi-passive stiffness damper (RSPSD) , comprising:a reciprocatable piston located within a cylinder;a linearly displaceable grooved rack coupled at one end to the piston;an actuator coupled between a structure to be damped and an opposite end of the grooved rack; a displaceable, spring-loaded lever arranged between the grooved rack and a slotted channel above the grooved rack, a first end of the lever in contact with the grooved rack and a second end of the lever movably residing in the channel, and', 'a sensor residing in the channel and located to detect the lever when the second end of the lever reaches a predetermined position within the channel; and, 'a triggering assembly, the triggering assembly comprisinga bypass valve associated with the cylinder and in communication with the sensor of the triggering assembly so as to receive open and close signals therefrom.3. The RSPSD of claim 2 , wherein the bypass valve is closed while the lever position satisfies the formula y(t) Подробнее