Having A Thrust Member With A Variable Volume Chamber (e.g., Coaxial Or Telescoping Tubes, Compensating Reservoir) Patents (Class 188/297)
  • Patent number: 8596431
    Abstract: A self-adjusting end position damping arrangement includes a stroke space 9 which is delimited by a movable stroke element 7, 24 and a part of the pneumatic cylinder 1, with the stroke space 9 being connected via a connecting duct 14 to the working pressure P1 which acts on the cylinder piston 22 or to the ventilation pressure (P3) in the outlet duct 3 and the stroke element 7, 24 being acted on via a damping duct 16 by the damping pressure P2 in the damping volume 19, a non-return valve 12 is arranged in the connecting duct 14 upstream of the stroke space 9, which non-return valve 12 blocks in the direction of the working pressure P1 or the ventilation pressure (P3), respectively, and a ventilation duct 5 is provided, which ventilation duct 5 can be opened by means of the movable stroke element 7, 24 and which is connected to an outlet duct 3.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: December 3, 2013
    Assignee: Parker Origa Holding AG
    Inventor: Christian Bruder
  • Patent number: 8590679
    Abstract: A twin-tube shock absorber comprising an outer tube which houses an inner tube. The inner tube forms an annulus area between the outer tube and the inner tube, and includes a check valve for allowing a fluid to flow unidirectionally from the annulus area to the interior volume of the inner tube. The shock absorber includes a piston which is slidably disposed within the inner tube and divides the interior volume into a rod side chamber and a cap side chamber. The piston includes a check valve allowing the fluid to flow unidirectionally from the cap side chamber to the rod side chamber. A flow regulator is disposed about the inner tube for allowing the unidirectional flow of fluid from the rod side chamber to the annulus area, wherein the flow regulator provides a resistance against the flow of the fluid from the rod side chamber to the annulus area.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: November 26, 2013
    Assignee: Oneiric Systems, Inc.
    Inventor: Everett A. Hall
  • Patent number: 8585069
    Abstract: A telescopic suspension fork leg, such as may be used in a motorcycle. The fork leg has an inner tube and an outer tube and a damping arrangement and a spring arrangement, which is arranged within a first chamber which is formed in the outer tube and is supported against a second chamber formed by the damping arrangement and arranged beneath the first chamber, which is constructed to receive a damping fluid. The damping arrangement has a piston, on a piston rod, with upper and lower piston surfaces. The piston is displaceable within a damping tube arranged largely concentrically to the inner tube, and the damping tube is surrounded by an annulus chamber arranged largely concentrically to the damping tube, and a sealing arrangement, displaceable along the piston rod, is provided between the first and second chambers.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: November 19, 2013
    Assignee: WP Performance Systems GmbH
    Inventor: Johannes Wimmer
  • Patent number: 8579092
    Abstract: A damper unit which brakes the speed of movement of a moving body by using a piston damper provided with a cylinder and a piston rod which is connected to a piston inside the cylinder, is provided. The damper unit includes a case wherein the above-mentioned piston damper is disposed; a transmitting member slidably provided inside the case and transmitting an external force accompanied by the movement of the above-mentioned moving body; a link member whose one end side is attached to the above-mentioned case so as to become the rotational center, and also whose the other end side is pivotally supported by the above-mentioned transmitting member; and a connecting member connected between both ends of the link member and being in contact with or connected to either the piston rod or the cylinder.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: November 12, 2013
    Assignee: Nifco Inc.
    Inventor: Motohiko Kimura
  • Patent number: 8579091
    Abstract: A dynamic energy management restraint anchor device interfaces with a child seat in a vehicle, engaging common child seat attachment clip features. A device restraint anchor is operable to dynamically extract and permit distortion of load bearing deformable member(s) in order to manage the displacement of, and load transferred through, an anchor connected to a child seat. The device may be further operable to limit or prevent restraint anchor displacement and the distortion of said deformable member(s) under quasi-static load conditions in order to meet motor vehicle static load/displacement anchorage performance requirements applicable to certain anchors. Anchor retraction capability and various interlocking configurations for securing the position of an anchor, before or after having extracted, may be incorporated relative to the energy management device interfacing with both a vehicle and a child seat. An indicator may further be provided to identify the functional state of the restraint device.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: November 12, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Richard Edward Ruthinowski, Ian Brewster Hall, Parakrama Valentine Weerappuli, Brian Robert Spahn
  • Patent number: 8567575
    Abstract: A shock absorber, in which external gas is sucked by movement of a piston rod to obtain compressed gas, which is used for inhibiting the “lag” phenomenon. A piston valve is connected to one end of a piston rod received in an inner shell and moved between rebound and compression strokes, an inner space of the inner shell being divided into a rebound chamber and a compression chamber by the piston valve. A reservoir chamber is provided in an outer shell outside of the inner shell to supply oil to the compression chamber in the rebound stroke and to recover oil in the compression stroke. The shock absorber has a high pressure tank with a high pressure chamber installed outside of the outer shell, and a self pumping unit for sucking gas and pumping it into the high pressure chamber using energy generated by movement of the piston rod.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: October 29, 2013
    Assignee: Mando Corporation
    Inventors: Woo Jin Jung, Myung Hwa Hyun
  • Patent number: 8561767
    Abstract: A shock absorber, in which external gas is sucked by movement of a piston rod to obtain compressed gas, which is used for inhibiting the “lag” phenomenon. A piston valve is connected to one end of a piston rod received in an inner shell and moved between rebound and compression strokes, an inner space of the inner shell being divided into a rebound chamber and a compression chamber by the piston valve. A reservoir chamber is provided in an outer shell outside of the inner shell to supply oil to the compression chamber in the rebound stroke and to recover oil in the compression stroke. The shock absorber has a high pressure tank with a high pressure chamber installed outside of the outer shell, and a self pumping unit for sucking gas and pumping it into the high pressure chamber using energy generated by movement of the piston rod.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: October 22, 2013
    Assignee: Mando Corporation
    Inventors: Woo Jin Jung, Myung Hwa Hyun
  • Patent number: 8544620
    Abstract: It is an object of the invention to improve utility in a suspension apparatus for a vehicle having an electromagnetic actuator and a hydraulic damper. In the suspension apparatus, a hydraulic damper is disposed between an electromagnetic actuator and a wheel-holding portion, and a cover tube is provided for accommodating a seal provided between a piston rod and a housing of the hydraulic damper. In the suspension apparatus according to the present invention wherein the hydraulic damper is disposed between the wheel-holding portion and the electromagnetic actuator, it is possible to effectively mitigate not only transmission of vibrations to the vehicle body from the wheel via the electromagnetic actuator but also transmission of vibrations to the electromagnetic actuator. Further, owing to the presence of the cover tube, entry of dust and the like into the hydraulic damper through the seal can be effectively prevented.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: October 1, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kayaba Industry Co., Ltd.
    Inventors: Hirofumi Inoue, Takuhiro Kondo
  • Publication number: 20130200248
    Abstract: A pneumatic vibration isolating suspension is disclosed for supporting a payload on a moving carrier while suppressing the transmission of vibrations in the 1 to 50 Hz band between the carrier and the payload. The disclosed invention can be deployed in the air in a towed carrier or sonde, and operated from aircraft power, making it a suitable platform for airborne geophysical instrumentation. It also has particular application to airborne electromagnetic surveying operating in the same frequency band because the sensor vibrations that result in noise created by the modulation of the sensor coupling with the earth's magnetic field are suppressed. Furthermore, the invention can be constructed from resistive composite materials and non-magnetic metals, so it can be operated without producing significant modification to the ambient electromagnetic field being measured.
    Type: Application
    Filed: July 26, 2012
    Publication date: August 8, 2013
    Applicant: Vale S.A.
    Inventors: Benjamin David POLZER, Gordon Fox West, Peter White Walker
  • Patent number: 8499905
    Abstract: A front fork for easily optimizing an oil quantity in a damper cylinder with a relatively simple structure without affecting operability of a free piston even in an assembled state. An escape portion is formed on an outer periphery of a piston rod at a position where a seal member mounted on a sealing cap faces in an opposed manner when a front fork extends to the maximum.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: August 6, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Mikio Uchiyama, Kazuhiko Gogo
  • Publication number: 20130192312
    Abstract: A displacement sensor module 1 for mounting on a telescopic-type damper 30, a damper/detector assembly including such a displacement sensor module and a telescopic-type damper, and a household appliance including such a damper/detector assembly is provided. The displacement sensor module 1 includes at least one coil element 4, an electronic detection unit 8 connected to the at least one coil element 4 and adapted to detect an impedance change of the at least one coil element, and a coil housing 2 for receiving and additionally or alternatively a coil support 6 for supporting the at least one coil element 4 and for supporting the electronic detection unit 8. The displacement sensor module 1 is adapted to be mounted on a telescopic-type damper 30, wherein in particular the housing 2 or support 6 is adapted to fit over a portion of a pre-assembled damper 30.
    Type: Application
    Filed: March 3, 2011
    Publication date: August 1, 2013
    Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.
    Inventors: Nicola Ius, Stefano De Paoli, Thomas Peuker, Andreas Pelczer
  • Patent number: 8496095
    Abstract: A dynamic energy management restraint anchor device interfaces with a child seat in a vehicle, engaging common child seat attachment clip features. A device restraint anchor is operable to dynamically extract and permit distortion of load bearing deformable member(s) in order to manage the displacement of, and load transferred through, an anchor connected to a child seat. The device may be further operable to limit or prevent restraint anchor displacement and the distortion of said deformable member(s) under quasi-static load conditions in order to meet motor vehicle static load/displacement anchorage performance requirements applicable to certain anchors. Anchor retraction capability and various interlocking configurations for securing the position of an anchor, before or after having extracted, may be incorporated relative to the energy management device interfacing with both a vehicle and a child seat. An indicator may further be provided to identify the functional state of the restraint device.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: July 30, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Richard Edward Ruthinowski, Ian Brewster Hall, Parakrama Valentine Weerappuli, Brian Robert Spahn
  • Publication number: 20130161141
    Abstract: A joined body includes a first member having a female portion, and a second member having a male portion inserted in the female portion at one end, and an annular groove along an outer circumference of the male portion. The first member and the second member are fitted to each other. A plurality of joint portions is formed on a side wall of the female portion. The joint portions are joined to the male portion by being pushed in the annular groove. A pressing member is formed at the female portion so as to face a position of the male portion axially different from the annular groove of the male portion. The pressing member is pressed against the male portion.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: HITACHI AUTOMOTIVE SYSTEMS, LTD.
  • Publication number: 20130161140
    Abstract: A shock absorber is provided. The shock absorber includes: a piston rod; an inner passage having an inlet port at an outer periphery of the piston rod; and a stopper installed at the outer periphery of the piston rod. The stopper is disposed to surround the inlet port of the inner passage, and an outer passage extending from an upper portion of the stopper to the inlet port is formed between the stopper and the piston rod.
    Type: Application
    Filed: October 3, 2012
    Publication date: June 27, 2013
    Applicant: MANDO CORPORATION
    Inventor: Mando Corporation
  • Patent number: 8453809
    Abstract: A twin-tube shock absorber comprising an outer tube which houses an inner tube. The inner tube forms an annulus area between the outer tube and the inner tube, and includes a check valve for allowing a fluid to flow unidirectionally from the annulus area to the interior volume of the inner tube. The shock absorber includes a piston which is slidably disposed within the inner tube and divides the interior volume into a rod side chamber and a cap side chamber. The piston includes a check valve allowing the fluid to flow unidirectionally from the cap side chamber to the rod side chamber. A flow regulator is disposed about the inner tube for allowing the unidirectional flow of fluid from the rod side chamber to the annulus area, wherein the flow regulator provides a resistance against the flow of the fluid from the rod side chamber to the annulus area.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: June 4, 2013
    Assignee: Oneiric Systems, Inc.
    Inventor: Everett A. Hall
  • Publication number: 20130093158
    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: October 9, 2012
    Publication date: April 18, 2013
    Inventor: Jeffrey R. Schwindt
  • Patent number: 8418334
    Abstract: The present invention provides a method of optionally changing damping characteristics of a twin-tube shock absorber. In the method of changing the damping characteristics of the twin-tube shock absorber (10), a threaded hole (11a) is formed in an outer tube (11), oil is drained from the inside of the twin-tube shock absorber (10) through the threaded hole (11a), replacement oil (35) is charged into the twin-tube shock absorber (10), and a check valve (20) is mounted in the threaded hole (11a). Thereafter, in a state that the check valve (20) is positioned on the upper side in the twin-tube shock absorber (10), a gas is sucked out from the inside of the twin-tube shock absorber (10) through a flow channel of the temporarily opened check valve (20), and a replacement nitrogen gas (36) is injected into the twin-tube shock absorber (10).
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: April 16, 2013
    Inventor: Takahiro Kitami
  • Patent number: 8403115
    Abstract: Apparatus and methods for providing a biasing force to a vehicle suspension. The apparatus includes a hydraulic shock absorber that coacts with a gas spring. In some embodiments, the gas spring is externally adjustable with regards to gas pressure, and also with regards to the amount of internal travel possible by a floating gas piston.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: March 26, 2013
    Assignee: Penske Racing Shocks
    Inventors: Bill J. Gartner, Andrew B. Lambert, James M. Arentz
  • Patent number: 8356829
    Abstract: A bicycle suspension-setting adjustor assembly is provided with a suspension tube attachment structure, a first actuator, a second actuator and a suspension-setting adjustment unit. The first actuator is rotatably mounted to the suspension tube attachment structure. The second actuator is rotatably mounted to the suspension tube attachment structure to rotate independent of rotation of the first actuator. The suspension-setting adjustment unit is operatively coupled to the first and second actuators. The suspension-setting adjustment unit adjusts a first suspension setting in response to rotation of the first actuator by using rotational movement of the suspension-setting adjustment unit. The suspension-setting adjustment unit adjusts a second suspension setting in response to rotation of the second actuator by using axial movement of the suspension-setting adjustment unit.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: January 22, 2013
    Assignee: Shimano Inc.
    Inventor: Toyoto Shirai
  • Patent number: 8336686
    Abstract: A mount for supporting a vibration damper in a vehicle has a cap provided with an anti-twist surface and configured to extend through a recessed support surface of the vehicle. The mount is provided with a retainer operable to couple the anti-twist surface to the support surface so as to suspend the vibration damper on the vehicle before and independently from fastening the vibration damper to the vehicle.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: December 25, 2012
    Assignees: Ford-Werke GmbH, ZF Friedrichshafen AG
    Inventors: Günther Handke, Markus Schulz
  • Publication number: 20120306133
    Abstract: One example embodiment includes a fluid based shock absorber. The fluid based shock absorber includes a first assembly. The first assembly includes a first compression chamber. The first assembly also includes a first sliding member. At least a portion of the first sliding member is configured to remain within the first compression chamber and the first sliding member is configured to move in a first direction relative to the first compression chamber.
    Type: Application
    Filed: November 22, 2011
    Publication date: December 6, 2012
    Inventor: Douglas Hunter Powell
  • 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
  • Publication number: 20120267206
    Abstract: An air dampening assembly for an electronic device comprises a base member. A first piston housing is disposed on the base member. A second piston housing is disposed on the based member opposite the first piston housing. A sliding member is disposed between the first and second piston housing. A first piston is disposed on a first elongated member of the sliding member. The first piston housing is configured to receive the first piston. A second piston is disposed on a second elongated member of the sliding member. The second piston housing is configured to receive the second piston.
    Type: Application
    Filed: April 22, 2011
    Publication date: October 25, 2012
    Applicant: RESEARCH IN MOTION CORPORATION
    Inventors: Martin Earl HOLMAN, IV, Bruce Alan IVANIK, Douglas Wayne MOSKOWITZ
  • Publication number: 20120247893
    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: June 18, 2012
    Publication date: October 4, 2012
    Inventors: Jose Gonzalez, Gregory P. Buhl
  • Publication number: 20120247892
    Abstract: A method and apparatus for changing a length of a landing gear system. A first cylinder and a second cylinder are moved relative to each other along an axis extending centrally through the first cylinder and the second cylinder such that the first cylinder and the second cylinder are in an extended position. In response to the first cylinder and the second cylinder being in the extended position, a flow of a fluid is substantially prevented between a first chamber formed between the first cylinder and the second cylinder and a second chamber within the first cylinder and the second cylinder. In response to a pressure applied to the first chamber, the first cylinder and the second cylinder are moved relative to each other along the axis such that a length of the first cylinder and the second cylinder is reduced.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 4, 2012
    Applicant: THE BOEING COMPANY
    Inventor: Justin Duane Cottet
  • Publication number: 20120242057
    Abstract: A damper unit and its employment as part of the suspension system for a vehicle are disclosed. A vehicle of the kind having wheels arranged in left-right pairs has a sprung mass and left and right unsprung masses associated with left and right wheels of a said left-right pair. Respective left and right damper units are mounted between the respective left and right unsprung masses and the sprung mass. Each damper unit has a damper housing defining first and second generally cylindrical chambers therewithin having a common axis. The first and second chambers are separated from each other in the axial direction by an intermediate wall. The first chamber has a first axial end wall at its end remote from the intermediate wall, and the second chamber has a second axial end wall at its end remote from the intermediate wall. A first piston is slidable in sealing engagement with the interior of the first chamber. A second piston is slidable in sealing engagement with the interior of the second chamber.
    Type: Application
    Filed: September 17, 2010
    Publication date: September 27, 2012
    Applicant: MCLAREN AUTOMOTIVE LIMITED
    Inventors: Anthony Richard Glover, Paul Andrew Burnham
  • Publication number: 20120181127
    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 and the area that is directly above the knuckle.
    Type: Application
    Filed: June 23, 2011
    Publication date: July 19, 2012
    Applicant: TENNECO AUTOMOTIVE OPERATING COMPANY INC.
    Inventors: Daniel T. Keil, Ben Schaller, Christopher Conrad, Laxman Subramaniam, Michal Nowak
  • Publication number: 20120160623
    Abstract: A cylinder assembly includes a piston rod connected to a piston which is movably received in a cylinder and the interior of the cylinder is defined into a first room and a second room by the piston. A first groove and a second groove are respectively defined in the inside and the outside of the piston, and the two grooves are longitudinally aligned with each other. Two seal rings are respectively engaged with the first and second grooves. The first groove includes a first inner surface and the second groove includes a second inner surface. A distance is defined between two respective extension lines of the first and second grooves. Each of the two respective extension lines is defined by extending a line from the first/second inner surface of the first/second groove. The outer diameter of the piston is reduced for being used with a smaller cylinder.
    Type: Application
    Filed: December 27, 2010
    Publication date: June 28, 2012
    Inventor: Jung Yu HSU
  • Publication number: 20120144922
    Abstract: A piston chamber combination comprising a container type piston, communicating with an enclosed space, said enclosed space having an at least substantially constant volume.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 14, 2012
    Applicant: NVB INTERNATIONAL UK LTD.
    Inventor: Nicolaas van der Blom
  • Publication number: 20120138400
    Abstract: A shock absorber includes a sleeve, a piston accomplishing forward and reverse travels therein, a rod, a piston cap, a rod cap including an orifice and a rod seal mounted therein. The rod seal defines a front face facing the piston and a rear face being opposite to the front face. The rod includes at least two rod sections in the form of annular humps. The front and rear faces operatively interact with the annular humps during the forward and reverse travels, such that the interaction causes deformations of the rod seal thereby cushioning impacts and reducing overloads of the shock absorber. An embodiment of the shock absorber further includes two annular humps represented by a first annular hump, having a first maximal diameter, and a second annular hump, having a second maximal diameter, while the first maximal diameter is greater than the second maximal diameter, preferably by 3-10 micrometers.
    Type: Application
    Filed: February 7, 2012
    Publication date: June 7, 2012
    Inventors: Oleg Olegovich Tikhonenko, Vladimir Pavlovich Lobko
  • Publication number: 20120125054
    Abstract: A pneumatic variable damping device for attenuating the motion of a wash tub in a washing machine is disclosed. The pneumatic variable damping device includes a pneumatic cylinder defining a first chamber and a second chamber. The pneumatic cylinder includes a piston slidably mounted to the cylinder. The piston separates the first chamber from the second chamber. The pneumatic variable damping device includes a first valve coupled to the first chamber and a second valve coupled to the second chamber. The first valve and the second valve are configured to restrict the flow of pneumatic fluid from the respective chambers of the pneumatic cylinder. The first valve and the second valve can also be configured to allow the free flow of pneumatic fluid from the respective chambers of the pneumatic cylinder.
    Type: Application
    Filed: November 18, 2010
    Publication date: May 24, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Richard Allen Vincent
  • Patent number: 8181979
    Abstract: A suspension fork for a bicycle includes at least one stanchion tube and at least one slider tube interacting therewith and a wheel receiving space adjacent thereto. The suspension fork includes a damper system with a damper chamber divided into a first chamber and a second chamber by a movable piston. The suspension fork further includes a damping device for the rebound stage and a damping device for the compression stage are provided. A shut-off valve is provided for selectively locking the rebound stage. The damper chamber comprises a connecting duct with a flow damper that connects the second chamber with the first chamber when the stanchion tube and the slider tube interacting therewith are compressed more than a predefined distance such that in the case of a forceful compression and with the shut-off valve of the rebound stage activated, slow decompression is allowed up to a damper position as defined by the predetermined distance.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: May 22, 2012
    Assignee: DT Swiss Inc.
    Inventors: Martin Achenbach, Valentin Wendel
  • Patent number: 8177043
    Abstract: A steering damper can generate a smaller damping force according to a first damping force characteristic or a larger damping force according to a second damping force characteristic by controlling a flow of hydraulic oil during a steering operation of a steering member. When the associated vehicle is running at a relatively low or medium speed and is not accelerating, and if an operational speed of the steering damper is lower than a predetermined value, damping force according to the first damping force characteristic can be generated in the steering damper. On the other hand, when the operational speed of the steering damper is equal to or higher than the predetermined value, damping force according to the second damping force characteristic can be generated in the steering damper.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: May 15, 2012
    Assignee: Yamaha Motor Hydraulic System Co., Ltd.
    Inventors: Noboru Kamiya, Fujio Matsui
  • Patent number: 8167099
    Abstract: A damper (1) is provided with a body (2) which surrounds an annular compression chamber (3), the damper (1) being furnished with at least one pneumatic compensation chamber (30, 40) and a control piston (4) that can move relative to the body (2), the control piston (4) having a rod (5) which protrudes from the body (2) and a head (6) which slides in the compression chamber (3). The damper is notable in that, the compression chamber (3) comprising a variable-section radial opening (8), the damper (1) is provided with a hydraulic compensation chamber (10) which receives a first fluid expelled from the annular compression chamber (3) via the variable-section radial opening (8) when the control piston (4) moves.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: May 1, 2012
    Assignee: Eurocopter
    Inventors: Vincent Lassus, Benjamin Talon, Cédric Lopez
  • Publication number: 20120080279
    Abstract: A method and apparatus for adjusting the sag setting of a vehicle suspension are disclosed. An integrated damper/gas spring shock absorber includes a bleed port located at a position on a gas spring cylinder corresponding to a desired sag setting. The gas spring may be over pressurized to a pressure above the expected operating pressure of the gas spring. The vehicle may then be loaded with the normal operating load, partially compressing the shock absorber. Opening the bleed port allows gas to vent from the gas spring, further compressing the shock absorber until a piston in the gas spring closes the bleed port from the inner surface of the gas spring cylinder. A sleeve may be inserted over the gas spring cylinder, the sleeve including one or more sealing elements that seal the bleed port from the outer surface of the gas spring cylinder during normal operation.
    Type: Application
    Filed: November 9, 2011
    Publication date: April 5, 2012
    Applicant: Fox Factory, Inc.
    Inventors: Mario GALASSO, Bryan Wesley ANDERSON, Dennis K. WOOTTEN
  • Publication number: 20120051909
    Abstract: A rotary wing system with a troublesome motion when rotating about a rotation axis, including a fluid tubular damper with a damper fluid for controlling the troublesome motion. The damper has an inboard and an outboard end, the inboard end attached to a rotary wing system inboard member proximate the rotation axis and the outboard end attached to a rotary wing system outboard member. The damper is terminated with a nonelastomeric end cap and contains damper fluid in at least an inboard and an outboard variable volume nonelastomeric working chamber which is worked by a nonelastomeric damper piston and a relative motion between the rotary wing system members. The damper includes a dynamically variable elastomeric volume compensator chamber in fluid communication with the working chambers, with the communication a controlled communication with the fluid flowed through control valves towards the working chambers.
    Type: Application
    Filed: April 28, 2010
    Publication date: March 1, 2012
    Inventor: Dennis P. McGuire
  • Publication number: 20120049470
    Abstract: A vehicle suspension system includes a pump, a gas spring, and an accumulator. The gas spring assembly includes a cylinder, a rod, and a chamber for supporting gas. The rod is coupled to the cylinder and moveable relative to the cylinder. The chamber is formed between the cylinder and the rod, where movement of the rod relative to the cylinder changes the volume of the chamber. The accumulator is configured for receiving, storing, and releasing potential energy from gas of the chamber. The accumulator is coupled to the chamber, and is in gaseous communication with the chamber such that a continuous body of gas extends between the chamber and the accumulator when the accumulator is receiving or releasing the potential energy.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Inventors: Aaron J. Rositch, Jesse L. Knoble, Erik Ellifson, Roy Venton-Walters, Mark L. Steckling
  • Publication number: 20120043170
    Abstract: A shock absorber comprises a sleeve, a cylindrical piston with a seal attached to the cylindrical surface of piston with two side surfaces, a rod coupled with the piston, a piston cap enclosing the sleeve on the piston's side, and a rod cap enclosing the sleeve on the rod's side. The piston and rod move within the sleeve overcoming resistance of oil/gas cross-flows from one sleeve's chamber to the other, friction between the seal and the sleeve's walls, and friction between the rod and a seal mounted in the rod cap. The proposed absorber allows increasing the resistance offered to the movement of piston thereby improving the efficiency of damping, and suppressing/avoiding auto-oscillation and resonance regimes. This is achieved by providing a number of narrowing/widening necks arranged on the sleeve's walls within regions adjoined to the caps. Different embodiments combine features conditioned by various diameter differences for the necks, etc.
    Type: Application
    Filed: August 17, 2010
    Publication date: February 23, 2012
    Inventors: Oleg Olegovich Tikhonenko, Vladimir Pavlovich Lobko
  • Patent number: 8114168
    Abstract: A momentum free bearing assembly for use in orthotic and prosthetic devices and a prosthetic knee incorporating the same are disclosed. The bearing assembly includes an engaging ring having a swivel portion received within the engaging ring. The engaging ring is received within a bore in a mount. Retainer rings may be placed on either side of the engaging ring within the bore to retain the engaging ring within the mount. Seals having sealing members may be provided on either side of the engaging ring to seal the engaging ring within the mount. A cylindrical rod engages the swivel portion and the seal through bores provided in each of the seal and the swivel portion. The ends of the cylindrical rod can be press-fit within bores on a mount and a frame of a prosthetic knee.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: February 14, 2012
    Assignee: Ossur HF
    Inventors: Sigurdur Olafsson, Gudni Ingimarsson, Helgi Jonsson
  • Patent number: 8104140
    Abstract: A decelerating device intended to intercept an end-of-stroke part of a closing path of a mobile member, such as a furniture drawer or door, including: a body fastenable in use to an abutting surface for the mobile member and internally defining a sealed chamber filled in use with a viscous fluid; a pushrod at least in part overhanging from the body and being adapted to cooperate in use with the mobile member, the pushrod being integral with a stem slidingly accommodated in the body against the bias of elastic means between an extracted position of the pushrod and a retracted position; and a piston accommodated in the sealed chamber so as to divide it into two portions hydraulically connected to each other and mechanically connected to the stem; wherein the stem presents a first end integrally connected to the pushrod and a second end opposite to the first, both slidingly accommodated in the body outside the sealed chamber and fluid-tightly towards the sealed chamber itself; the piston is provided with a mobil
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: January 31, 2012
    Assignee: ITW Industrial Components S.R.L. Con Unico Socio
    Inventor: Alberto Bassi
  • Patent number: 8100236
    Abstract: A shock absorber, in which external gas is sucked by movement of a piston rod to obtain compressed gas, which is used for inhibiting the “lag” phenomenon. A piston valve is connected to one end of a piston rod received in an inner shell and moved between rebound and compression strokes, an inner space of the inner shell being divided into a rebound chamber and a compression chamber by the piston valve. A reservoir chamber is provided in an outer shell outside of the inner shell to supply oil to the compression chamber in the rebound stroke and to recover oil in the compression stroke. The shock absorber has a high pressure tank with a high pressure chamber installed outside of the outer shell, and a self pumping unit for sucking gas and pumping it into the high pressure chamber using energy generated by movement of the piston rod.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: January 24, 2012
    Assignee: Mando Corporation
    Inventors: Woo Jin Jung, Myung Hwa Hyun
  • Publication number: 20120006636
    Abstract: An extension valve for an impact dispersal system that includes an extendable member. The extension valve includes an actuating port that operates a first piston connected to a second piston. The second piston has a seat that isolates an inlet and an outlet. When a fluid with a specified pressure is applied to said actuating port, the first piston overcomes a preset bias and causes said second piston to move to an unseated position, which allows fluid communication between the inlet and outlet ports. With a pressurized tank connected to the inlet port, actuation of the extension valve causes a pressurized fluid to flow through the extension valve, through a check valve, and into a fluid chamber in a cylinder, thereby causing a cylinder piston to extend into an impact ready position.
    Type: Application
    Filed: September 15, 2011
    Publication date: January 12, 2012
    Inventor: Phillip W. Love
  • Publication number: 20110214354
    Abstract: The present invention relates to an actuator (1), comprising an output member (6); a resilient element (8) connected to said output member (6) so as to urge it in a first direction; and an hydraulic rotation damper (5) with a closed cylinder cavity, a rotational damper shaft which extends into the cylinder cavity, and a piston dividing the cylinder cavity into a first side and a second side. Within the rotation damper (5), the rotational movement of the damper shaft is converted into a translational movement of the piston along a longitudinal axis of the shaft. A restricted fluid passage communicates said first and second sides. The damper shaft is connected over a gearing (10, 15, 17) to the output member (6) and resilient element (8) of the actuator for damping movement of said output member (6) in said first direction. The present invention relates to both rotational and linear actuators as well as to a closing mechanisms for hinged members, such as doors, gates, or windows, comprising such actuators.
    Type: Application
    Filed: August 27, 2009
    Publication date: September 8, 2011
    Inventor: Joseph Talpe
  • Patent number: 8002093
    Abstract: A damper includes a hollow outer elongated body; a hollow inner elongated body; a liquid viscous body or liquid viscoelastic body disposed in a gap between an inner surface of the elongated body and an outer surface of the elongated body in such a manner as to be in contact with the inner surface and the outer surface of these elongated bodies, respectively; and first and second attaching structures. Further, a controller may be provided to control an increase or decrease in the internal pressure of the liquid viscous body or the liquid viscoelastic body.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: August 23, 2011
    Assignee: Oiles Corporation
    Inventors: Masami Mochimaru, Sumio Kawaguchi, Mitsuru Miyazaki, Akio Suzuki
  • Publication number: 20110107754
    Abstract: A retard device (100, 100?) for a hybrid system (2) is provided. The retard device (100, 100?) includes a housing (102, 102?) having a first end (104, 104?) and a second end (106, 106?). The first end (104, 104) has a system inlet (108, 108) and the second end (106, 106) has an aperture (110, 110?). A piston assembly (112, 112?) is slidably disposed in the aperture (110, 110?) of the housing (102, 102?). The piston assembly (112, 112?) includes a piston head (114, 114?) coupled to an actuating linkage (116, 116). The piston head (114, 114?) is disposed adjacent the system inlet (108, 108) and the actuating linkage (116, 116?) is disposed through the aperture (110, 110) of the housing (102, 102?). A spring (126, 126) is disposed within the housing (102, 102?) between the second end (106, 106?) and the piston head (114, 114?).
    Type: Application
    Filed: January 15, 2009
    Publication date: May 12, 2011
    Inventors: James A. O'Brien, Richard T. Hoehn
  • Publication number: 20110094833
    Abstract: A method and apparatus for a shock absorber having a damping fluid compensation chamber with a gas charge. In one aspect, a partition separates a first chamber portion from a second chamber portion, wherein the first portion of the chamber is at a first initial gas pressure and the second portion of the chamber is at a second initial pressure. A valve separates the first and second chamber portions and opening the valve commingles the first and second chamber portions so that the combined chamber portions are at a third pressure. In another aspect, a piston disposed through a wall is in pressure communication with the gas charge and is biased inwardly toward a pressure of the charge, whereby an indicator is movable by the piston in response to the pressure.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 28, 2011
    Inventor: John Marking
  • Patent number: 7913823
    Abstract: In a front fork in which a partition wall member is provided in an inner periphery of an inner tube, a working fluid chamber is comparted under the partition wall member and an oil reservoir chamber is comparted over the partition wall member, a main suspension spring is interposed between an upper spring bearing in a piston rod side attached to an outer tube side and a lower spring bearing in a bottom portion side of the inner tube, within the working fluid chamber of the inner tube, and a sub suspension spring is interposed between an upper spring bearing in an upper end portion side of the outer tube side and a lower spring bearing in the partition wall member provided in an inner periphery of the inner tube, within the oil reservoir chamber of the inner tube.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: March 29, 2011
    Assignee: Showa Corporation
    Inventor: Yosuke Murakami
  • Patent number: 7913822
    Abstract: A shock assembly includes a first tube having a cylindrical wall with an inner surface and an outer surface. A second tube is received within the first tube and includes a cylindrical wall having an inner surface and an outer surface. A piston assembly is received within the second tube and includes a piston rod and a piston that is selectively movable relative to the first tube and the second tube. A height-sensing device is disposed within the first tube between the inner surface of the first tube and the outer surface of the second tube.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: March 29, 2011
    Assignee: Chrysler Group LLC
    Inventors: Edward Haney, Scott A. Bone, James M. Stevens, Christopher W. Olsen, Joel Donahue
  • Publication number: 20110024246
    Abstract: The invention relates to a damping mechanism for folding seats in chairs, having an application in seats (1) incorporated in an articulated assembly by means of shafts (2), with springs (4) which act in the sense that they tilt the seat towards a vertical folded position, incorporating in each shaft (2) an eccentric cam (5) on which there is supported a damping piston which exerts retention action for smoothing the upward rotation of the seat by the action of the springs (4).
    Type: Application
    Filed: July 23, 2010
    Publication date: February 3, 2011
    Applicant: FIGUERAS INTERNATIONAL SEATING, S.L.
    Inventor: JOSÉ FIGUERAS MITJANS
  • Publication number: 20110005877
    Abstract: An improvement to damping cylinders in which the damping fluid needs to be separated from a gas is disclosed. In particular, an annular bladder is used. An annular bladder allows for a control shaft to extend at least a portion of the length of the damping cylinder. This configuration effectively and simply reduces most issues that result from when an IFP is used for the same purpose.
    Type: Application
    Filed: September 17, 2010
    Publication date: January 13, 2011
    Applicant: FOX FACTORY, INC.
    Inventor: William M. Becker