Fluid Retarder Patents (Class 267/217)
  • Patent number: 11566679
    Abstract: A bumper cap for a damper, the damper including an outer tube with a tube end. A rod extending through the tube end. The damper including a damping fluid, such as a hydraulic oil, that is movable within the damper in response to movement of the rod to provide a damping effect. The bumper cap has a cup shaped body having a side wall and a base, the side wall having an inner surface and an outer surface, the inner surface having a dimension that is sized to be press fit over the outer tube. The base of the bumper cap has a through hole in the base, the through hole configured to have the rod pass therethrough. The base has at least one fluid passage extending away from the through hole that is in fluid communication with a fluid reservoir in the side wall.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: January 31, 2023
    Assignee: DRiV Automotive Inc.
    Inventors: Tomasz Görski, Grzegorz Franciszek Burzawa
  • Patent number: 11359690
    Abstract: A shock absorber includes: a collar which is mounted on an outer circumference of a cylinder movable in the axial direction with respect to an inner tube in which a liquid is stored and supports one end of a suspension spring. The collar has: an annular mounting portion whose one end is supported by the cylinder; an annular sliding contact portion provided to be closer to the suspension spring than the mounting portion and in sliding contact with an inner circumference of the inner tube; a truncated cone-shaped body portion that connects the mounting portion and the sliding contact portion and has a hole formed to apply a resistance against a flow of a liquid moving inside and outside the collar; and a rib formed on an inner circumference of the body portion along the axial direction.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: June 14, 2022
    Assignee: KYB MOTORCYCLE SUSPENSION CO., LTD.
    Inventors: Takaaki Nakano, Yuta Matsubara
  • Patent number: 9627604
    Abstract: A tubular spring is provided for receiving and pretensioning a piezoelectric or magnetostrictive actuator of an actuator unit, e.g., for actuating a fuel injector valve in internal combustion engines, wherein the tubular spring comprises at least two types of recesses, each comprising different maximum lateral extensions in the longitudinal direction of the tubular spring. The tubular spring is designed to comprise a uniform load distribution about the circumference of the tubular spring even without welding the longitudinal sides thereof abutting one another.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: April 18, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Christoph Hamann, Jürgen Dick
  • Patent number: 9352633
    Abstract: An active suspension apparatus for a vehicle includes actuators configured to compensate displacements of coil springs connected to wheels of the vehicle, a first pump configured to supply a fluid to one of the actuators on left and right front wheels of the vehicle among the actuators, and a second pump configured to supply a fluid to one of the actuators on left and right rear wheels of the vehicle among the actuators, in which the fluid contained in one of cylinders of the first pump and the second pump is supplied to at least one of the actuators based on driving of a motor.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: May 31, 2016
    Assignee: MANDO CORPORATION
    Inventor: Tae Ju Kim
  • Patent number: 9010741
    Abstract: The suspension bump stop device comprises a rolling bearing (44) that forms an axial bump stop, equipped with an upper ring (46), with a lower ring (48) and with a plurality of rolling elements positioned between the rings, the upper and lower rings being supported respectively by an upper cup (40) and a lower cup (42), the lower cup forming a bearing means for a suspension spring (18), at least one sealing lip being provided on one of the cups so that it bears against a bearing surface portion of the other cup. The bearing surface portion is substantially cylindrical, the sealing lip being directed downwards away from the rolling bearing and bearing with radial interference against the said surface portion, the said substantially cylindrical surface portion being connected towards the top to a shoulder against which the lip can bear if the two cups become radially eccentric relative to one another.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: April 21, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Samuel Viault, Yves-André Liverato, Cédric Brulard, Guy Heck
  • Publication number: 20140346722
    Abstract: A switchable locking torque strut assembly and associated method are provided. The strut assembly is interposed between an associated vehicle chassis and an associated vehicle powertrain to provide high elastomeric rate resistance during start-up and/or shutdown of an associated internal combustion engine (ICE) and low elastomeric rate resistance during idle and/or driving events. The strut assembly includes a housing and a shaft at least partially received in the housing and operatively mounted for selective relative movement relative to the housing. A locking assembly is interposed between the strut and the housing for selectively locking the strut relative to the housing in response to start-up and/or shutdown of the ICE.
    Type: Application
    Filed: January 23, 2013
    Publication date: November 27, 2014
    Applicant: COOPER-STANDARD AUTOMOTIVE INC.
    Inventors: Jeff Bradshaw, Steve Telando
  • Publication number: 20140252706
    Abstract: A guide member for a vehicle shock absorber having a construction with which, even when the guide member contacts an inside tube member, the operation of the vehicle shock absorber is not obstructed. A vehicle shock absorber system is provided with an outer tube, an inner tube, a damper cylinder which is connected to the outer tube and is positioned on the inside of the inner tube, a spring guide which is fixed onto the outer circumferential surface of the damper cylinder, and a coil spring which is positioned between the inner tube and the spring guide. The spring guide is provided with a guide main body portion and a low friction portion provided in a portion of the guide main body portion which contacts the inner tube when the outer tube and/or the inner tube has been bent. The low friction portion has a lower coefficient of friction than the guide main body portion.
    Type: Application
    Filed: October 4, 2012
    Publication date: September 11, 2014
    Inventor: Takamasa Kamioka
  • Publication number: 20140239567
    Abstract: Methods and apparatus are provided for a damper having a jounce shock. The damper includes a top mounting portion adapted to couple the damper to a vehicular frame and a bottom mounting portion adapted to couple the damper to a vehicular suspension system. The damper further includes a damper tube assembly disposed between the top mounting portion and the bottom mounting portion. The damper tube assembly includes a jounce shock system and a rod having a first piston and a second piston. The rod is movable within the damper tube assembly from a first position to a second position, and the second piston engages the jounce shock system as the rod approaches the second position.
    Type: Application
    Filed: January 13, 2014
    Publication date: August 28, 2014
    Applicants: THYSSENKRUPP BILSTEIN OF AMERICA, INC., GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: WOJCIECH E. SUCHTA, DONALD G. WIRKNER, ANDREW ROBY, DENNIS BAKER
  • Publication number: 20140232050
    Abstract: A hydropneumatic suspension unit for a vehicle that includes an outer sleeve which defines a first chamber, and a damping piston which is arranged for sliding displacement in the first chamber. The first chamber contains gas mainly for providing spring action and liquid mainly for providing damping action. The gas is in direct contact with the liquid.
    Type: Application
    Filed: April 25, 2014
    Publication date: August 21, 2014
    Applicant: Stromsholmen AB
    Inventors: Jakob Axellson, Leif Lundahl
  • Patent number: 8807542
    Abstract: A method and apparatus for a vehicle shock absorber comprising a main damper cylinder, a first reservoir and a second reservoir. One embodiment includes a first operational mode where both reservoirs are in fluid communication with the cylinder. In a second operational mode, only one reservoir communicates with the cylinder during fluid evacuation from the cylinder. In each mode, rebound from either or both reservoirs may travel through a single, user-adjustable metering device.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: August 19, 2014
    Assignee: Fox Factory, Inc.
    Inventors: Mario Galasso, Dennis K. Wootten, Bryan Wesley Anderson
  • Publication number: 20140217663
    Abstract: Rotary damper (1) for a motor vehicle, with at least one damping element (2) for damping the relative movement between a first mass disposed on the wheel suspension side and a second mass disposed on the vehicle body side. The damping element (2) has at least one rotatable damper part, which can be set in rotation by a lever element (5) that moves as a result of the motion of the mass and is mechanically coupled to the damping element to permit motion, wherein at least one spring damping element (6) is integrated into the mechanical motion-coupling between the lever element (5) and the rotatable damper part.
    Type: Application
    Filed: May 8, 2012
    Publication date: August 7, 2014
    Applicant: Audi AG
    Inventor: Marco Willems
  • Publication number: 20140203484
    Abstract: A suspension system for use with a motorcycle includes a single body having two pneumatic cylinders in axial alignment therein. The suspension system may be sold in a kit, and may be installed in an existing front wheel fork.
    Type: Application
    Filed: January 27, 2014
    Publication date: July 24, 2014
    Inventor: Jeffrey R. Schwindt
  • Patent number: 8776965
    Abstract: A shock absorber that absorbs a vibration using a working fluid charged into a first chamber and a second chamber comprises a tube body, an inserted body, a tip end of which is inserted into the tube body from an end portion of the tube body, and a partition wall portion that is provided on the tip end of the inserted body to be capable of sliding within the tube body and partitions an interior of the tube body into the first chamber and the second chamber. The shock absorber comprises a connecting portion that is provided within a partition wall portion sliding region of the tube body and connects the first chamber and the second chamber when the partition wall portion passes thereby.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: July 15, 2014
    Assignee: Kayaba Industry Co., Ltd.
    Inventor: Nobuhiro Noguchi
  • Patent number: 8763997
    Abstract: A damper for a landing gear of a helicopter having a barrel, a piston defining a first hydraulic cavity between the piston and a bottom end of the barrel and a second hydraulic cavity between the piston and a top of the barrel, a stack of disc springs disposed within the first hydraulic cavity in a compressed state between the bottom end of the barrel and the piston. Each of the disc springs having a substantially concave side and an opposing substantially convex side, the disc springs stacked in an alternating pattern such that any two adjacent washers have their like sides positioned adjacent to each other. A spring disposed within the second hydraulic cavity such that the spring is compressed between the compression member and the top of the barrel when the piston is in an extended position. A hydraulic fluid is disposed inside at least a portion of the first hydraulic cavity and at least a portion of the second hydraulic cavity.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: July 1, 2014
    Assignee: Nanokas Aviation, L.L.C.
    Inventor: Marcus L. Dunn
  • Patent number: 8746661
    Abstract: The invention relates to a hydro-pneumatic piston accumulator (1), particularly for vehicle suspension systems, consisting of an accumulator housing (2) and a separating piston (6), which is disposed free-floating inside the accumulator housing in a displaceable manner in the direction of the movement axis (4). The separating piston separates an accumulator area (8) for a hydraulic medium from a pressure area (10) that is filled or is to be filled with a compressible medium, and is guided with an interior guide opening (30) on an elongated guide element (32), which is axially fixed within the accumulator housing (2).
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: June 10, 2014
    Assignee: Hemscheidt Fahrwerktechnik GmbH & Co. KG
    Inventor: Walter Runkel
  • Publication number: 20140145385
    Abstract: A damper bearing for supporting a chassis component on a motor vehicle body includes a first bearing element for attachment to the vehicle body, a second bearing element for attachment to the chassis component, and a damping element which is arranged between the first and second bearing elements and which is composed of a shock-damping material. The first bearing element is formed as a disk spring—first disk spring—and the damping element has a disk-like basic shape, and the second bearing element is vulcanized into the disk-shaped damping element.
    Type: Application
    Filed: September 24, 2011
    Publication date: May 29, 2014
    Applicant: AUDI AG
    Inventor: Michael Barma
  • Patent number: 8672306
    Abstract: A vehicle shock absorber includes a plurality of communication holes axially provided side by side in a peripheral wall of the cylinder of the damper, another communication hole provided in a peripheral wall of the cylinder and located below a position of piston of the damper, and a third oil chamber provided in an outer tube and an inner tube of a fork body and outside the cylinder and communicating with only a second oil chamber via the communication holes. This configuration enables the vehicle shock absorber to make a damping force generated by the damper positional dependent, and suppresses the entering of an air bubble into the cylinder, even when a cylinder of the damper is located above an oil level in an oil reservoir within the absorber body.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: March 18, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventor: Mikio Uchiyama
  • Patent number: 8641052
    Abstract: A suspension device (S) as a solution for the problem of the present invention includes: an active suspension unit (U) equipped with a linear actuator (A) and a first fluid pressure damper (D1) connected to the actuator (A) to extend and retract in the same direction; and a second fluid pressure damper (D2) arranged in parallel with the active suspension unit (U).
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: February 4, 2014
    Assignees: Kayaba Industry Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Takuhiro Kondo, Yoshifumi Kobayashi, Motohiko Honma, Takayuki Tachi
  • Patent number: 8534433
    Abstract: An elastic connection element with variable rigidity for coupling together components that are spaced from each other. The connection element is a tubular component with coupling points which fix the components to the element. The rigidity of the element, in the state of maximum rigidity, is determined substantially by the coupling points. These are formed by a receiving eyelet and an elastomeric bush bearing press-fit therein. The region located between the coupling points forms a piston/cylinder unit, the interior of which comprises at least two chambers that are separated by the piston and which receive a hydraulic or a pneumatic medium. The chambers are interconnected with one another by a connection line containing a controllable valve. By at least partially opening the valve, the rigidity of the connection element can be reduced in relation to the state of maximum rigidity.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: September 17, 2013
    Assignee: ZF Friedrichshafen AG
    Inventor: Klaus Kramer
  • Patent number: 8496383
    Abstract: The bump stop device, particularly for a motor vehicle, comprises a bearing 6 forming an axial stop, a bottom support cover 5 of the bearing and a bottom retainer 7 for a spring comprising at least one stiffening strut. The support cover 5 and/or the retainer 7 comprises at least one axial securing means 15 of the bottom retainer and of the bottom support cover, the said means being situated axially set back from a bottom end of the retainer.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: July 30, 2013
    Assignee: Aktiebolaget SKF
    Inventors: Samuel Viault, Thierry Poulle
  • Patent number: 8485505
    Abstract: A wheel suspension is described with a wheel-guiding McPherson strut unit which has a helical compression support spring, a shock absorber which is connected on one end to the body and on the other end to the wheel, and a suspension arm, the helical compression spring being made such that the helical compression spring at least partially compensates for transverse forces which occur on the shock absorber without the action of the helical compression spring. To enable the weight of the helical compression spring to be reduced, the helical compression spring is constructed and arranged so that the stress in the spring is at least approximately, preferably exactly, the same on the side of the spring center line or line of action of the spring force facing the wheel as on the side facing away from the wheel. This makes it possible to reduce the weight throughout by roughly 10%.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: July 16, 2013
    Assignee: Muhr und Bender KG
    Inventors: Robert Brandt, Joerg Neubrand, Hans-Ulrich Kriese
  • Patent number: 8480064
    Abstract: A bicycle can include a suspension system with a shock absorber. The shock absorber can have a sag position which can be adjustable. Sag refers to the amount of movement experienced by the suspension under a static load, such as that of the weight of a rider. Methods and systems to set sag can include at least one valve in fluid communication with a gas chamber of the shock absorber. In some embodiments, the at least one valve can be used to automatically set the sag position based on an individual's weight and riding position.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: July 9, 2013
    Assignee: Specialized Bicycle Components, Inc.
    Inventor: Jan Talavasek
  • Patent number: 8469164
    Abstract: A damper (D1) comprising an actuator A connected to a sprung member (B) side of a vehicle, the actuator having a motion converting mechanism (T) for converting a linear motion into a rotational motion and a motor (M) to which the rotational motion resulting from the conversion by the motion converting mechanism (T) is transmitted; a hydraulic damper (E), the hydraulic damper (E) having a cylinder (C), a piston (P) inserted slidably into the cylinder (C) and defining two pressure chambers within the cylinder (C), and a rod (R) connected at one end thereof to the piston (P), the linear motion of the actuator (A) being transmitted to one of the rod (R) and the cylinder (C), the other of the rod (R) and the cylinder (C) being connected to an unsprung member (W) side of the vehicle; a spring (1) accommodated within one of the two pressure chambers and biasing the hydraulic damper (E) in a damper compressing direction; and a spring (2) accommodated within the other pressure chamber and biasing the hydraulic damper
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: June 25, 2013
    Assignees: Kayaba Industry Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Takuhiro Kondo, Hirofumi Inoue
  • Patent number: 8448760
    Abstract: A buffering, energy absorbing, system has tapered grooves within either the inner surface of a cylindrical main body or along the sides of a piston head to allow fluid flow, where the tapered grooves increasingly or decreasingly restrict the flow of fluid between the inside of the main body and an accumulator.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: May 28, 2013
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventor: Gary J. Houtsma
  • Publication number: 20130099436
    Abstract: A bicycle shock absorber and methods for differentiating between rider-induced forces and terrain-induced forces includes a first fluid chamber having fluid contained therein, a piston for compressing the fluid within the fluid chamber, a second fluid chamber coupled to the first fluid chamber by a fluid communication hose, and an inertial valve disposed within the second fluid chamber. The inertial valve opens in response to terrain-induced forces and provides communication of fluid compressed by the piston from the first fluid chamber to the second fluid chamber. The inertial valve does not open in response to rider-induced forces.
    Type: Application
    Filed: December 13, 2012
    Publication date: April 25, 2013
    Applicant: SPECIALIZED BICYCLE COMPONENTS, INC.
    Inventor: SPECIALIZED BICYCLE COMPONENTS, INC.
  • Publication number: 20130049274
    Abstract: A fluid pressure damper is provided with a damper main body composed of an outer tube and an inner tube, a bottom member for sealing a bottom side opening of the damper main body, a suspension spring and a damper. The damper includes a cylinder storing a working fluid inside. The cylinder is inserted into the inner tube and fixed to the bottom member by being sandwiched between a head member fixed to a joint member coupled to the inner tube and the bottom member. The joint member includes a stopper member with the inner periphery of which the head member is threadably engaged, and a pin member which couples the stopper member to the inner periphery of the inner tube. The suspension spring is supported by the stopper member.
    Type: Application
    Filed: November 18, 2011
    Publication date: February 28, 2013
    Applicant: KAYABA INDUSTRY CO., LTD.
    Inventors: Hidetoshi Sugawara, Takahiko Jinnouchi, Takeshi Tomiuga
  • Publication number: 20130020748
    Abstract: A spring damper unit configured for arrangement between a first vehicle part and a second vehicle part of a motor vehicle. The spring damper unit includes a first fastening device for fastening the spring damper unit to the first vehicle part and a second fastening device for fastening the spring damper unit to the second vehicle part. In addition, the spring damper unit includes an elastic element and a vibration damper having two damper parts that move relatively with respect to each other and are arranged between the fastening devices in order to damp relative movements between the vehicle parts and to control a spaced disposition between the vehicle parts. The pre-stressing of the elastic elements are variably adjusted via a first adjusting device and one of the damper parts is adjustable relative to one of the fastening devices via a second adjusting device.
    Type: Application
    Filed: December 21, 2010
    Publication date: January 24, 2013
    Applicant: MAGNA STEYR Fahrzeugtechnik AG & Co KG
    Inventors: Matthias Kohlhauser, Hansjörg Pöhler
  • Publication number: 20120319338
    Abstract: A cover member having plural peak portions and plural trough portions, and freely stretched and shrunk in an array direction of the plural peak portions and the plural trough portions or freely bent, the cover member includes: a hollow part formed in each of the plural peak portions, the hollow part being hollowed toward an inner side from a peak of each of the plural peak portions, being formed in a circumferential direction, and having edge parts, a bottom part and side parts located between the edge parts and the bottom part. The edge parts of the hollow part are brought into contact with each other before the side parts of the hollow part are brought into contact with each other, when at least one of the plural peak portions is subjected to force in a direction intersecting with the array direction from an outside.
    Type: Application
    Filed: December 13, 2011
    Publication date: December 20, 2012
    Applicant: Showa Corporation
    Inventors: Akira Takada, Shinichi Sutou
  • Publication number: 20120305350
    Abstract: An apparatus and system are disclosed that provide position sensitive suspension damping. A damping unit includes a piston mounted in a fluid-filled cylinder. A vented path in the piston may be fluidly coupled to a bore formed in one end of the piston rod, creating a flow path for fluid to flow from a first side of the piston to a second side of the piston during a compression stroke. The flow path may be blocked by a needle configured to engage the bore as the damping unit is substantially fully compressed, thereby causing the damping rate of the damping unit to increase. In one embodiment, the piston includes multiple bypass flow paths operable during the compression stroke or the rebound stroke of the damping unit. One or more of the bypass flow paths may be restricted by one or more shims mounted on the piston.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 6, 2012
    Inventors: Everet O. Ericksen, Christopher Paul Cox, Sante M. Pelot
  • Publication number: 20120292841
    Abstract: Suspension thrust bearing device comprising a rolling bearing (2) and a bottom cover (4) having a bearing surface capable of accommodating a suspension spring (5), the bottom cover (4) comprising a reinforcing framework (8), which framework has a bearing collar (17) placed axially between the rolling bearing (2) and the bearing surface of the spring (5), the framework (8) also comprising an inner radial extension (19). The framework comprises an axial portion (20) extending in a direction away from the rolling bearing (2), protruding axially relative to the inner radial extension (19) and being situated radially outside the radial extension so as to be able to accommodate a shock-absorbing pad.
    Type: Application
    Filed: November 9, 2010
    Publication date: November 22, 2012
    Inventors: Richard Corbett, Samuel Viault
  • Publication number: 20120286493
    Abstract: A damper mass damper assembly includes a rod, and a casing disposed annularly about the rod and defining a primary fluid chamber therebetween. The rod includes an annular wall that defines a first and a second expansion chamber disposed at a first and a second end of the rod respectively. The rod further defines a first and a second expansion port connecting the first and the second expansion chambers respectively with the primary fluid chamber in fluid communication. As fluid within the primary fluid chamber expands from heating, the fluid may weep into the first and/or second expansion chambers through the first and/or second expansion ports respectively to maintain the integrity of a first and second cap bearing seal, which seal the fluid within the primary fluid chamber.
    Type: Application
    Filed: May 12, 2011
    Publication date: November 15, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Albert H. Butlin, JR., Vincent A. Bommarito, James F. Collins
  • Patent number: 8261895
    Abstract: There is provided a hydraulic shock absorber including a spring receiver that is supported so as to be not rotatable with respect to the axle bracket. The spring receiver is divided into a spring receiver base portion that has an outer diameter smaller than an inner periphery of an axle-side tube, and a spring receiver cylindrical portion that is inserted into an inner periphery of the axle-side tube and a suspension spring is seated thereon. A lower end engagement portion provided at a lower end of the spring receiver cylindrical portion is seated on an upper end engagement portion provided at an upper end of the spring receiver base portion, so that the spring receiver cylindrical portion is concentrically set to the axle-side tube.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: September 11, 2012
    Assignee: Showa Corporation
    Inventor: Yosuke Murakami
  • Publication number: 20120193849
    Abstract: A suspension system (1) for a motor vehicle having a telescopic spring cylinder (2), having two spring stages (A, B), namely one main cylinder (8) as a first spring stage (A) and an auxiliary cylinder (10) as a second spring stage (B). An auxiliary piston (26) with an auxiliary piston rod (28) is displaced in the auxiliary cylinder (10). Inside the auxiliary cylinder (10), the auxiliary piston (26) is acted upon by a spring pressure (p2) for decompression, which is generated by a pneumatic pressure medium (PM) inside the auxiliary cylinder (10). The auxiliary piston (26) is indirectly acted upon by the spring pressure (p2) via an hydraulic medium (HM) inside the auxiliary cylinder (10). Peripheral seals (30, 38) arranged between the auxiliary cylinder (10) and the auxiliary piston (26), and the auxiliary piston rod (28) are separated from the pneumatic pressure medium (PM) via the hydraulic medium (HM).
    Type: Application
    Filed: December 20, 2011
    Publication date: August 2, 2012
    Applicant: Hemscheidt Fahrwerktechnik GmbH & Co. KG
    Inventor: Walter Runkel
  • Publication number: 20120187652
    Abstract: A telescopic suspension fork leg, such as may be using in conjunction with a motorcycle. The fork leg has an inner tube and an outer tube, a damping arrangement, and a spring arrangement which is arranged inside a first chamber formed in the outer tube and resting opposite a second chamber formed by the damping arrangement and arranged beneath the first chamber. The telescopic suspension fork leg features a compressible equalizing volume for a damping fluid volume displaced by a piston rod. The equalizing volume is provided generally concentrically between a damping tube and a separating piston. The separating piston fluidically separates the equalizing volume from an annular space chamber.
    Type: Application
    Filed: January 21, 2012
    Publication date: July 26, 2012
    Applicant: WP SUSPENSION AUSTRIA GMBH
    Inventor: Johannes Wimmer
  • Publication number: 20120181766
    Abstract: A strut assembly includes an upper mount assembly, a shock absorber and a knuckle. The upper mount assembly is attached to a piston rod which is a part of the shock absorber. The knuckle is attached to an outer tube of the shock absorber which can be a reserve tube of a dual-tube shock absorber or a pressure tube of a single tube shock absorber. A reinforcement member increases the strength of the outer tube in the area that interfaces with the knuckle.
    Type: Application
    Filed: January 17, 2011
    Publication date: July 19, 2012
    Applicant: TENNECO AUTOMOTIVE OPERATING COMPANY INC.
    Inventors: Daniel T. Keil, Ben Schaller, Christopher Conrad, Laxman Subramaniam
  • Publication number: 20120091678
    Abstract: A stabilizing device for axles of vehicles, such as motor vehicles, trailers, semi-trailers, or the like, including a hollow cylinder unit, which comprises a hollow cylinder containing a fluid therein, a piston unit with a piston which is arranged in the hollow cylinder and divides the hollow cylinder into at least two chambers, wherein the piston unit can slide relative to the hollow cylinder unit in that said piston unit can be moved from an original position to a deflected position, a pre-tensioning device which tensions the piston unit in the direction of the original position, and a control or regulating device which controls or regulates the fluid flow into/out of the chambers.
    Type: Application
    Filed: May 11, 2010
    Publication date: April 19, 2012
    Inventors: Josef Büttner, Lutz Böhme
  • Publication number: 20120049427
    Abstract: A shock-absorbing device includes a first cylinder with a first room defined therein and a room is defined in an end of the first cylinder. A second cylinder extends into the first cylinder and has a first piston so as to define a third room and a third room. Hydraulic liquid is filled in the second and third rooms. A first tube and a second tube extending through the first tube are located in the first room. A first path and a second path communicate with the recess. The first and second tubes extend into the second cylinder and are connected to the first piston. When the first and second cylinders are relative moved, the hydraulic liquid is controlled to flow or not flow between the first and second paths so as to absorb different levels of shocks, and the speed that the shock-absorbing device returns can be adjusted.
    Type: Application
    Filed: May 9, 2011
    Publication date: March 1, 2012
    Applicant: KIND SHOCK HI-TECH CO., LTD.
    Inventor: JUNG YU HSU
  • Publication number: 20110298168
    Abstract: In a suspension strut, the spring support system has a transmission system with a gearbox case and a drive gear that is mounted to rotate in the gearbox case. The adjustment nut, with which the prestressing of the spring can be set, is designed as a gear that works together with the drive gear, by which a rotation of the drive gear produces a screwing motion of the adjustment nut on the thread of the cylinder.
    Type: Application
    Filed: June 3, 2010
    Publication date: December 8, 2011
    Inventor: Andreas Groebner
  • Publication number: 20110291472
    Abstract: There is disclosed a suspension unit comprising a suspension hub having a connecting element which is arranged to be secured to a vehicle chassis and a suspension arm which is mounted on the suspension hub for pivoting movement about an axis of the suspension hub. A resilient arrangement is accommodated within the suspension arm and includes a displaceable element which is connected by a connecting rod to a crank pin supported by the suspension hub at a position spaced from the hub axis. A rotational damper acts between the suspension hub and the suspension arm and comprises a first damping part and a second damping part that are rotatable with respect to one another and which define a damping chamber therebetween which is arranged to contain a damping fluid. A fluid expansion chamber is provided which is arranged to contain excess damping fluid and which is in fluid communication with the damping chamber through a fluid passageway.
    Type: Application
    Filed: May 24, 2011
    Publication date: December 1, 2011
    Applicant: HORSTMAN DEFENCE SYSTEMS LIMITED
    Inventors: Tim Holman, Robert D'Aubyn
  • Publication number: 20110221108
    Abstract: A vehicle shock absorber includes a plurality of communication holes axially provided side by side in a peripheral wall of the cylinder of the damper, another communication hole provided in a peripheral wall of the cylinder and located below a position of piston of the damper, and a third oil chamber provided in an outer tube and an inner tube of a fork body and outside the cylinder and communicating with only a second oil chamber via the communication holes. This configuration enables the vehicle shock absorber to make a damping force generated by the damper positional dependent, and suppresses the entering of an air bubble into the cylinder, even when a cylinder of the damper is located above an oil level in an oil reservoir within the absorber body.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 15, 2011
    Inventor: Mikio UCHIYAMA
  • Publication number: 20110155524
    Abstract: A compensation device for a shock absorber comprising a hydraulic volume formed by two chambers separated by a removable wall of a piston and including at least one cartridge defining a shock-absorber body and a rod attached to the mobile wall of the piston. The hydraulic shock absorber includes an outer tube defining a cartridge in which said shock body is provided. The inner wall of the outer tube being capable of sliding against the outer wall of the shock absorber body so as to compensate, at the hydraulic chamber in which the piston rod is inserted, for the volume of the portion of the piston rod inserted into the hydraulic chamber upon a compression phase.
    Type: Application
    Filed: July 24, 2009
    Publication date: June 30, 2011
    Inventor: Dominique Crasset
  • Publication number: 20110133378
    Abstract: A damper for a landing gear of a helicopter having a barrel, a piston defining a first hydraulic cavity between the piston and a bottom end of the barrel and a second hydraulic cavity between the piston and a top of the barrel, a stack of disc springs disposed within the first hydraulic cavity in a compressed state between the bottom end of the barrel and the piston. Each of the disc springs having a substantially concave side and an opposing substantially convex side, the disc springs stacked in an alternating pattern such that any two adjacent washers have their like sides positioned adjacent to each other. A spring disposed within the second hydraulic cavity such that the spring is compressed between the compression member and the top of the barrel when the piston is in an extended position. A hydraulic fluid is disposed inside at least a portion of the first hydraulic cavity and at least a portion of the second hydraulic cavity.
    Type: Application
    Filed: June 2, 2010
    Publication date: June 9, 2011
    Inventor: Marcus L. Dunn
  • Publication number: 20110133379
    Abstract: The suspension bump stop device comprises a rolling bearing (44) that forms an axial bump stop, equipped with an upper ring (46), with a lower ring (48) and with a plurality of rolling elements positioned between the rings, the upper and lower rings being supported respectively by an upper cup (40) and a lower cup (42), the lower cup forming a bearing means for a suspension spring (18), at least one sealing lip being provided on one of the cups so that it bears against a bearing surface portion of the other cup. The bearing surface portion is substantially cylindrical, the sealing lip being directed downwards away from the rolling bearing and bearing with radial interference against the said surface portion, the said substantially cylindrical surface portion being connected towards the top to a shoulder against which the lip can bear if the two cups become radially eccentric relative to one another.
    Type: Application
    Filed: July 29, 2009
    Publication date: June 9, 2011
    Inventors: Samuel Viault, Yves-André Liverato, Cédric Brulard, Guy Heck
  • Publication number: 20110095569
    Abstract: A suspension device for a springy suspension of a mass body relative to an understructure, for instance suspension of a driver cabin of a truck relative to a vehicle chassis. The suspension device comprises a spring-/damping configuration, located between the mass body and the understructure, for the damping shock and/or vibration and comprising a Watt linkage configuration with two parallel positioned Watt linkages. A length of at least one of the linkage arms, of the Watt linkage, is adjustable by an actuator. The suspension device is low-maintenance, free of play, and is suitable for determining of the levels of freedom of motion, for instance of a driver cabin, as well as for damping or eliminating unwanted movement of the driver cabin. At the same time, roll motions of the driver cabin, with respect to the understructure or the chassis, can be actively prevented.
    Type: Application
    Filed: June 18, 2009
    Publication date: April 28, 2011
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Felix Haeusler, Andreas Gartner, Friedhelm Langhorst, Matthias Quaing
  • Publication number: 20110057370
    Abstract: A cushion device includes a shock absorber and an accumulator. As a piston moves in a certain direction in a cylinder so that the shock absorber is compressed, oil in an oil chamber is discharged to the accumulator through an oil hose. The compression operation of the piston allows a slide member to slide and the capacity of an oil chamber is reduced. The oil in the oil chamber is discharged to a regulation unit through an oil hose. The regulation unit controls a valve by the pressure of the oil coming in from the oil chamber and applies resistance to the oil discharged from an oil chamber to an oil chamber.
    Type: Application
    Filed: August 20, 2010
    Publication date: March 10, 2011
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Takamasa KAMIOKA
  • Publication number: 20100163357
    Abstract: A shock absorber assembly comprises a piston and cylinder arrangement, a damping-fluid chamber and a damping valve arrangement which is located in the damping fluid chamber and serves to divide the chamber into sub-chambers. The assembly is such that in use the valve arrangement regulates the flow of fluid between the sub-chambers.
    Type: Application
    Filed: April 9, 2008
    Publication date: July 1, 2010
    Inventor: Joseph Richard Andrew Hunter
  • Publication number: 20100117319
    Abstract: An integrated suspension damper assembly for a drive vehicle and a trailer fleet combination includes a suspension damper, an air spring concentrically attached to an upper portion of the suspension damper with an end rotatably attached to a vehicle frame, a yoke having an upper end fixedly attached to a lower portion of the suspension damper and a lower end constructed to be rotatably attached to a lower wishbone control arm. The integrated air spring damper assembly is constructed to maintain a uniform spring rate of said integrated suspension damper assembly to provide a lateral roll stability. Components of said integrated suspension damper assembly are interchangeable for use with the integrated suspension damper assembly as installed in the drive vehicle and its trailer.
    Type: Application
    Filed: January 21, 2009
    Publication date: May 13, 2010
    Applicant: Lockheed Martin Corporation
    Inventors: Nikolay G. Grozev, Navinbhai M. Patel
  • Publication number: 20100117318
    Abstract: An integrated trailer suspension damper assembly for a trailer or towed vehicle that includes an integrated trailer air spring damper assembly. The integrated trailer air spring damper assembly includes a trailer suspension damper, an air spring concentrically attached to an upper portion of the trailer suspension damper with an end rotatably attached to a trailer frame, a yoke having an upper end fixedly attached to a lower portion of the trailer suspension damper and a lower end constructed to be rotatably attached to a lower wishbone control arm. The integrated trailer air spring damper assembly is constructed to travel a maximum linear articulation distance.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 13, 2010
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: Nikolay G. GROZEV, Navinbhai M. PATEL
  • Publication number: 20100072685
    Abstract: A suspension component achieves progressive resistance via a secondary bleed valve, which functions as a support for the primary compression valve at higher displacements, in conjunction with a secondary nonlinear spring element configured to alter the force on the piston at high displacements.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 25, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: WILLIAM GOLPE, CHANDRA S. NAMUDURI, WALTER B. CWYCYSHYN, NIKOLAI K. MOSHCHUK
  • Publication number: 20090267316
    Abstract: A shock absorber, which is particularly applicable to bicycles, includes a mount body, a first cap portion, a second cap portion, and a fluid cylinder. The fluid cylinder cooperates with a valve assembly that is offset from the mount body. The first and second cap portions enclose a gas cavity or gas chamber. One of the first and second cap portions is interchangeable with other caps so as to alter the performance of the shock absorber by altering the size of the gas chamber. The replaceable cap cooperates with the mount body such that it can be replaced without removing the shock absorber from a bicycle.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 29, 2009
    Inventors: Jose Gonzalez, Gregory P. Buhl