Fluid Handling Details Patents (Class 280/124.16)
  • Patent number: 10934145
    Abstract: A lift device includes a chassis having a first end and an opposing second end, a first actuator coupled to the first end of the chassis, a second actuator coupled to the first end of the chassis, a third actuator coupled to the opposing second end of the chassis, a fourth actuator coupled to the opposing second end of the chassis, and a control system. The control system is configured to fluidly couple at least two of the first actuator, the second actuator, the third actuator, and the fourth actuator, and fluidly decouple and actively control the at least two of the first actuator, the second actuator, the third actuator, and the fourth actuator.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: March 2, 2021
    Assignee: Oshkosh Corporation
    Inventors: JiHong Hao, Ignacy Puszkiewicz
  • Patent number: 10639955
    Abstract: A suspension system for a vehicle axle including at least one hydraulic suspension cylinder, which has at least one chamber, with the chamber being connected to a hydraulic accumulator and allowing a connection via switching arrangement as well as to a pressure source and a pressure release. A shut-off valve is arranged between the chamber and the accumulator, by which the suspension can be blocked. In order to avoid during the unblocking process that any sudden compensating motion of the axle suspension develops, here the suspension system includes at least one detection device connected to the chamber of the suspension cylinder and the accumulator, which is embodied to detect the pressure difference between the chamber and the accumulator.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: May 5, 2020
    Assignees: Weber-Hydraulik GmbH, Deere & Company
    Inventors: Christian A. von Holst, Michael Kremb, Tobias Hegler, Jacek Zatrieb
  • Patent number: 10550908
    Abstract: End member assemblies that are dimensioned for use in forming a gas spring assembly can include an end member core that is dimensioned for securement to a flexible spring member to at least partially form the gas spring assembly. The end member assemblies can also include a plurality of rib members that are supported on the core body. The plurality of rib members are disposed in spaced relation relative to one another and include an end disposed radially outward beyond the core body. A skirt body can be supported on the core body in operative engagement with the plurality of rib members. The skirt body can include at least one surface operative to engage the flexible spring member. Gas spring assemblies, suspension systems and methods are also included.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: February 4, 2020
    Assignee: Firestone Industrial Products Company, LLC
    Inventor: Matthew F. Byron
  • Patent number: 10434835
    Abstract: A hydraulic actuator circuit is disclosed for use with first and second shock absorbers, which each may include a piston disposed within a housing. The piston helps define upper and lower working chambers. The circuit may have a motor, a first pump, driven by the motor, and is associated with the first shock absorber and the motor. A second pump, driven by the motor, may be associated with the second shock absorber. A first accumulator communicates with both of the first and second pumps. A first switch valve may assist in controlling fluid flow into the chambers of the first shock absorber. A second switch valve may assist in controlling fluid flow into the chambers of the second shock absorber.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: October 8, 2019
    Inventors: Kristoff Six, Stefan Deferme, Peter Boon
  • Patent number: 10391830
    Abstract: The invention relates to an integrated air-supply unit, in particular for air-suspension systems for motor vehicles, said unit comprising an air compressor having an electric motor and an air dryer. The air compressor together with the electric motor, air dryer and a number of pneumatic connections form a functional unit.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: August 27, 2019
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Joachim Bohn, Christian Courth, Uwe Folchert, Christoph Voss, Michael Zydek, Dierk Hein, Hinz Axel, Christian Witala
  • Patent number: 10279641
    Abstract: A regenerative shock absorber that include a housing and a piston that moves at least partially through the housing when the shock is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor, in turn, drives an electric generator that produced electric energy. The electric energy may be provided to a vehicle, among other things. The regenerative shock absorber may also provide ride performance that comparable to or exceeds that of conventional shock absorbers.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: May 7, 2019
    Assignee: ClearMotion, Inc.
    Inventors: Zackary Martin Anderson, Zachary J. Jackowski, Ryan Bavetta
  • Patent number: 10207558
    Abstract: A vehicle-height adjustment system includes: a vehicle-height adjustment actuator provided so as to correspond to a wheel; and a pressure-medium supply and discharge device configured to supply and discharge a pressure medium to and from the vehicle-height adjustment actuator. The pressure-medium supply and discharge device includes a tank configured to store the pressure medium. The vehicle-height adjustment system includes a tank-pressure controller configured to control a tank pressure based on at least one of a vehicle height for the wheel and an inside temperature. The tank pressure is a pressure of the pressure medium stored in the tank, and the inside temperature is a temperature in the vehicle-height adjustment system.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: February 19, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hideki Ohashi, Katsuyuki Sano, Jun Tokumitsu, Ryo Kanda, Shogo Tanaka, Masaaki Oishi, Ken Ogue
  • Patent number: 10035397
    Abstract: A regenerative shock absorber that include a housing and a piston that moves at least partially through the housing when the shock is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor, in turn, drives an electric generator that produced electric energy. The electric energy may be provided to a vehicle, among other things. The regenerative shock absorber may also provide ride performance that comparable to or exceeds that of conventional shock absorbers.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: July 31, 2018
    Assignee: ClearMotion, Inc.
    Inventors: Zackary Martin Anderson, Zachary J. Jackowski, Ryan Bavetta
  • Patent number: 9597939
    Abstract: A regenerative shock absorber that include a housing and a piston that moves at least partially through the housing when the shock is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor, in turn, drives an electric generator that produced electric energy. The electric enemy may be provided to a vehicle, among other things. The regenerative shock absorber may also provide ride performance that comparable to or exceeds that of conventional shock absorbers.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: March 21, 2017
    Assignee: ClearMotion, Inc.
    Inventors: Zackary Martin Anderson, Zachary J. Jackowski, Ryan Bavetta
  • Patent number: 9062571
    Abstract: A compressed air supply device for operating a pneumatic system, such as a vehicle pneumatic suspension system, comprises a compressed air supply, a first pneumatic connection between the compressed air supply and the pneumatic system, the first pneumatic connection having an air desiccator, a throttle device, and at least one controllable isolating valve, and a second pneumatic connection pneumatically connected to the first pneumatic connection and to a vent connection leading to the surroundings, the second pneumatic connection having at least one controllable vent valve. According to one embodiment, the controllable isolating valve and the throttle device are arranged in series in the first pneumatic connection such that the controllable isolating valve can be switched into an open state when in a through-flow mode, and into a closed state when in an isolating mode.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: June 23, 2015
    Assignee: WABCO GmbH
    Inventors: Dieter Frank, Jorg Meier, Frank Meissner
  • Patent number: 9039021
    Abstract: A control arrangement for a hydropneumatic suspension system and a hydropneumatic suspension system are provided. The control arrangement has a pressure supply connection, a return connection, a piston chamber connection adapted to be connected to the piston chamber of a suspension cylinder of the hydropneumatic suspension system, an annular chamber connection adapted to be connected to the annular chamber of the suspension cylinder, and at least one controllable valve arrangement comprising a plurality of switch positions via which the pressure supply connection and the return connection are connectable to the piston chamber connection and the annular chamber connection. The annular chamber connection is in flow connection with the return connection via a pressure-limiting line having a hydraulically controllable pressure-limiting element. The pressure-limiting element has a control input adapted to be acted upon via a control line by a control pressure which is limitable to a predefinable pressure limit.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: May 26, 2015
    Assignee: FSP Fluid Systems Partners Holding AG
    Inventor: Wolfgang Bauer
  • Publication number: 20150130146
    Abstract: A gas spring and gas damper assembly (1 10; 200; 400) can include a gas spring assembly (128; 202; 402) and a gas damper assembly (130; 204; 404). The gas spring assembly can include opposing end members (206, 208; 406, 408) and a flexible spring member (210; 410) secured there between that at least partially forms a spring chamber (212; 412). One of the end members (208; 408) can include an end member chamber (268; 468) that is separated into a plurality of damping chambers (292, 294; 492, 494). Damper pistons (300, 302; 500, 502) are disposed within the damping chambers (292, 294; 492, 494) and are connected to the other end member (206; 406) by way of a damping rod (276; 476).
    Type: Application
    Filed: May 29, 2013
    Publication date: May 14, 2015
    Inventors: Pradipta N. Moulik, Graham R. Brookes, Joseph A. Bounds
  • Patent number: 9010785
    Abstract: A suspension system includes spring bellows that are associated with pneumatic springs of vehicle axles, are connectable by lines having level control valves to a main pressure line, and can be shut off with respect thereto. The main line is connectable by valves alternately to a compressed air source and a sink, and can be shut of with respect thereto. To set different air mass flow rates when air is supplied to/removed from the bellows, the bellows of the springs at least on a vehicle axle or side can be connected to the main line in parallel with the connecting lines, at least by further connecting lines having further level control valves, and can be shut off with respect thereto. The further valves have nozzle cross-sectional surfaces the same size as the other level control valves. Chokes are downstream of the further valves in the ventilation direction, the cross-sectional surfaces thereof being smaller than the nozzle cross-sectional surfaces of the further valves.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: April 21, 2015
    Assignee: WABCO GmbH
    Inventors: Reinhard Gocz, Michael Haverkamp, Johann Lucas, Andreas Rutsch, Thomas Stellmacher
  • Patent number: 8998231
    Abstract: A bicycle suspension system of the invention generally includes at least two bicycle suspensions and a hydraulic control assembly. The hydraulic control assembly includes a pair of fluid pumps, and a fluid responder and a fluid path for each of the bicycle suspensions. The fluid pumps are mountable to a bicycle handlebar and form part of the hydraulic control assembly. A fluid responder is mountable each of the bicycle suspensions. The fluid paths link the fluid pump to a respective fluid responder. Each fluid responder is operatively connected to one of the bicycle suspensions to operate the bicycle suspension system between first and second suspension settings in response to fluid displacement between each fluid pump and each of the fluid responders.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: April 7, 2015
    Assignee: SRAM, LLC
    Inventor: Eric Neeley
  • Patent number: 8991840
    Abstract: A damper assembly for a vehicle suspension system includes a damper and a valve block coupled to the damper. The damper includes a tubular sidewall having an inner surface that defines an inner damper volume and a plunger separating the inner damper volume into a compression chamber and an extension chamber. The valve block includes a housing having a spring pilot and defining a flow path between an inlet port and an outlet port. The inlet port is in fluid communication with at least one of the compression chamber and the extension chamber. The damper assembly further includes a flow controller coupled to the housing and positioned along the flow path and a piston having a pilot end coupled to the spring pilot and an interface end that engages the flow controller with a pilot force that varies based on a pressure at the spring pilot.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 31, 2015
    Assignee: Oshkosh Defense, LLC
    Inventors: Jason J. Zuleger, Robert K. Sollenskog
  • Patent number: 8991841
    Abstract: An air spring that can be used in an air suspension system includes a hollow piston, a hollow shaft and a body. The hollow piston has a hole through it. The hollow shaft has a shaft interior volume in communication with the hole in the piston. The body has a body interior volume in communication with the hole in the hollow piston. The hole in the hollow piston in communication with the shaft interior volume and the body interior volume provides a total interior volume. Wherein, the total interior volume is greater than the body interior volume thereby providing a linearized spring rate.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: March 31, 2015
    Assignee: MSI Defense Solutions, LLC
    Inventors: David J. Holden, Andrew M. Wizorek, Todd J. Holbert
  • Patent number: 8991834
    Abstract: A gas spring for a vehicle suspension system includes a cylinder, a rod disposed within the cylinder, a relative movement between the rod and the cylinder changing the volume of a chamber formed between the rod and the cylinder, and an accumulator in communication with the chamber. Compression of gas in the chamber at least partially provides a first spring rate for deflections of the gas spring below a threshold, compression of gas in the chamber at least partially provides a second spring rate for deflections of the gas spring above the threshold, and the first spring rate is greater than the second spring rate.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: March 31, 2015
    Assignee: Oshkosh Defense, LLC
    Inventors: Roy Venton-Walters, Aaron J. Rositch, Jesse L. Knoble, Erik S. Ellifson, Mark L. Steckling
  • Patent number: 8973922
    Abstract: A height control valve assembly having a housing with an air supply port, first and second ports, and an exhaust port. A valve positioned in the housing has a first surface in fluid communication with the air supply port and a second surface. The valve moves between first and second positions, in which the second surface sealingly engages a portion of the housing surrounding the first and second ports, respectively, to prevent fluid from flowing between the air supply port and the first and second ports, respectively. The valve is moveable from either of the first and second positions to a fill position, in which the air supply port is in fluid communication with one of the first and second ports, and an exhaust position, in which one of the first and second ports is in fluid communication with the exhaust port.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 10, 2015
    Assignee: Haldex Brake Products Corporation
    Inventor: Robert L. Koelzer
  • Patent number: 8967629
    Abstract: A first communication passage is coupled to a left wheel cylinder pressure chamber at an upper vehicle side and a right wheel cylinder pressure chamber at a lower vehicle side to be communicated with each other, and a second communication passage is coupled to a left wheel cylinder pressure chamber at the lower vehicle side and a right wheel cylinder pressure chamber at the upper vehicle side to be communicated with each other. Between the first and second communication passages is a valve mechanism so that the first and second communication passages are normally communicated with each other, and fluid flow from one of the first communication passage and the second communication passage to the other is blocked, when a pressure difference, caused when fluid moves from one of the first communication passage and the second communication passage to the other, becomes equal to or greater than a predetermined value.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: March 3, 2015
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Morito Oshita, Fumio Kojima, Katsuhiko Takasu
  • Patent number: 8960697
    Abstract: A vehicle suspension device includes a first fluid path through which a first upper port opening into a first hydraulic cylinder and a second lower port opening into a second hydraulic cylinder communicate with each other, a second fluid path through which a second upper port opening into the second hydraulic cylinder and a first lower port opening into the first hydraulic cylinder communicate with each other, a first hydraulic damping mechanism in the first fluid path, a second hydraulic damping mechanism in the second fluid path, a first accumulator connected to the first fluid path via a first branch fluid path having a first auxiliary hydraulic damping mechanism, a second accumulator connected to the second fluid path via a second branch fluid path having a second auxiliary hydraulic damping mechanism, and a bridge fluid path through which the first and second branch fluid paths are connected together.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: February 24, 2015
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Akira Kato, Takamasa Kato, Yoshifumi Ohtani, Katsuhiko Takasu, Masaaki Oishi
  • Patent number: 8925933
    Abstract: Methods and apparatus for regulating the function of a suspension system are disclosed herein. Suspension characteristics often contribute to the efficiency of a suspended system. Depending on the desired operating parameters of the suspended system, it may be desirable to alter the functional characteristics of the suspension from time to time in order to maintain or increase efficiency. The suspension hereof may be selectively locked into a substantially rigid configuration, and the damping fluid may be phase separated and/or cooled to increase damping rate during use (or offset rate degradation). The suspension hereof may generate power usable to achieve any or all of the foregoing or to be stored for use elsewhere in the suspended system or beyond.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: January 6, 2015
    Assignee: Fox Factory, Inc.
    Inventor: David Haugen
  • Publication number: 20140346749
    Abstract: A gas spring and gas damper assembly includes a first end member, a second end member and a flexible wall that at least partially defines a first spring chamber therebetween. A damping chamber wall at least partially defines a damping chamber. A damper piston is received within the damping chamber and is operatively connected between the first and second end members and within the first spring chamber. A suspension system that includes a gas spring and gas damper assembly as well as a method of assembly are also included.
    Type: Application
    Filed: August 11, 2014
    Publication date: November 27, 2014
    Inventors: Pradipta N. Moulik, Joseph A. Bounds, Graham R. Brookes
  • Publication number: 20140346748
    Abstract: A leveling valve for discharging and supplying air from and to a plurality of utilization elements comprises a valve disc arrangement configured to direct air between a source of pressurized air, an exhaust port, and the utilization elements. The valve disc arrangement comprises a first and a second valve disc, which are rotatable with respect to each other such that the valve is switchable between multiple switching positions, and, in some switching positions, either the source of pressurized air or the exhaust port are in fluid communication with the utilization elements. The valve discs provide a stepped increase in flow cross-section in a respective flow path to or from the utilization elements. The stepped increase is dependent on the angle of rotation between the valve discs.
    Type: Application
    Filed: March 21, 2014
    Publication date: November 27, 2014
    Inventors: Krzysztof Harla, Michael Haverkamp, Agnieszka Leszczuk, Marek Repela
  • Publication number: 20140333038
    Abstract: A suspension system includes spring bellows that are associated with pneumatic springs of vehicle axles, connectable by lines having level control valves to a main pressure line, and can be shut off with respect thereto. The main line is connectable by valves alternately to a compressed air source and a sink, and can be shut of with respect thereto. To set different air mass flow rates when air is supplied to/removed from the bellows, the bellows of the springs at least on a vehicle axle or side can be connected to the main line in parallel with the connecting lines, at least by further connecting lines having further level control valves, and can be shut off with respect thereto. The further valves have nozzle cross-sectional surfaces the same size as the other level control valves. Chokes are connected-downstream of the further valves in the ventilation direction, the cross-sectional surfaces thereof being smaller than the nozzle cross-sectional surfaces of the further valves.
    Type: Application
    Filed: December 5, 2012
    Publication date: November 13, 2014
    Inventors: Reinhard Gocz, Michael Haverkamp, Johann Lucas, Andreas Rutsch, Thomas Stellmacher
  • Patent number: 8876122
    Abstract: A level control for vehicles has at least one air spring cushioning a vehicle body relative to a vehicle axle. A compressed air generator is connected to the air spring by an air dryer and to the atmosphere by a check valve opening in the intake direction of the generator. The air spring can be connected to the atmosphere for discharge via a pneumatically controllable first directional valve. The air spring pressure is applied to a pneumatic control input of the first directional valve via a second controllable directional valve. The input of the first directional valve can be connected to the atmosphere for ending discharge of the spring. A line with a compressed air accumulator branches off from the air spring supply line via a first changeover valve. The accumulator is connected to the intake side of the generator via a second changeover valve.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: November 4, 2014
    Assignee: AMK Arnold Müller GmbH & Co. KG
    Inventor: Thomas Gall
  • Publication number: 20140312590
    Abstract: A vehicle air suspension system of includes at least one or more bellows assigned to an air spring of one or more vehicle axles. The bellows can be connected to a main pressure line and can be blocked off therefrom the latter via a connecting line having a level control valve. The main line can be supplied with air via a supply line having a compressor and an air dryer, and can be vented via a vent line, which branches off between the compressor and the air dryer and has a discharge valve. A pressure reservoir can be connected to the main line and can be blocked off therefrom via a connecting line having a storage valve. To set different flow velocities when supplying and venting the bellows the bellows of the air spring arranged on a vehicle axle or on a vehicle side is/are connected to the main line and blocked off therefrom via at least two parallel connecting lines, each having a level control valve.
    Type: Application
    Filed: November 20, 2012
    Publication date: October 23, 2014
    Inventor: Uwe Stabenow
  • Publication number: 20140300073
    Abstract: A bicycle suspension system of the invention generally includes at least two bicycle suspensions and a hydraulic control assembly. The hydraulic control assembly includes a pair of fluid pumps, and a fluid responder and a fluid path for each of the bicycle suspensions. The fluid pumps are mountable to a bicycle handlebar and form part of the hydraulic control assembly. A fluid responder is mountable each of the bicycle suspensions. The fluid paths link the fluid pump to a respective fluid responder. Each fluid responder is operatively connected to one of the bicycle suspensions to operate the bicycle suspension system between first and second suspension settings in response to fluid displacement between each fluid pump and each of the fluid responders.
    Type: Application
    Filed: April 4, 2013
    Publication date: October 9, 2014
    Applicant: SRAM, LLC
    Inventor: Eric Neeley
  • Publication number: 20140265203
    Abstract: A damper assembly for a vehicle suspension system includes a damper and a valve block coupled to the damper. The damper includes a tubular sidewall having an inner surface that defines an inner damper volume and a plunger separating the inner damper volume into a compression chamber and an extension chamber. The valve block includes a housing having a spring pilot and defining a flow path between an inlet port and an outlet port. The inlet port is in fluid communication with at least one of the compression chamber and the extension chamber. The damper assembly further includes a flow controller coupled to the housing and positioned along the flow path and a piston having a pilot end coupled to the spring pilot and an interface end that engages the flow controller with a pilot force that varies based on a pressure at the spring pilot.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: OSHKOSH CORPORATION
    Inventors: Jason J. Zuleger, Robert K. Sollenskog
  • Patent number: 8827291
    Abstract: Disclosed is an improved snowmobile ski suspension including a pair of airspring biasing mechanisms whose air volumes are interconnected by a cross linking conduit that incorporates an open and closed switch. In an alternative embodiment a simpler configuration is provided for which does not include the use of an open or closed switch manifold.
    Type: Grant
    Filed: October 29, 2011
    Date of Patent: September 9, 2014
    Inventors: Harold J. Cronquist, Troy L. Leiphart, Gerard John Karpik
  • Publication number: 20140239606
    Abstract: A gas spring assembly (200) with a flexible wall (206) being a rolling lobe (240) with an end member (204) including a side wall (238) and a plurality of corrugations disposed along the side wall. A cover (246) can be secured across a cavity (248) formed in the gas spring end member.
    Type: Application
    Filed: July 2, 2012
    Publication date: August 28, 2014
    Inventors: Paul P. Koeske, Stephen C. Street
  • Patent number: 8814190
    Abstract: A compressed air supply assembly for operating a pneumatic assembly includes a compressed air supply; a compressed air connection to the pneumatic assembly; a purge connection to the environment; a pneumatic main line between the compressed air supply and the compressed air connection comprising an air dryer; a purge line between the compressed air connection and the purge connection; and a solenoid valve arrangement with a control valve to control a purge valve. The control valve is connected to a control valve connection in a pneumatic control line connected to a pressure control connection of the purge valve, and the purge valve is connected to a purge valve connection in the purge line. A pressure-maintaining device is connected to the pneumatic control line and maintains control pressure at the pressure control connection when the purge valve connection is open, independently of pressure in the purge line and/or the main line.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: August 26, 2014
    Assignee: WABCO GmbH
    Inventors: Hans-Otto Becher, Jorg Meier, Uwe Stabenow
  • Publication number: 20140230687
    Abstract: An end member assembly dimensioned for securement to an associated flexible spring member of an associated gas spring assembly. The end member assembly can include a base wall and a mounting wall disposed in axially-spaced relation to the base wall. A compliant support structure is disposed between the base and mounting walls. The compliant support structure includes at least one compliant element that includes a compliant element body and one or more reinforcing plies at least partially embedded within the compliant element body. Rigid elements can be disposed between adjacent compliant elements if two or more compliant elements are included. A gas spring assembly and a method of manufacture can include one or more of such end member assemblies.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 21, 2014
    Applicant: Firestone Industrial Products Company, LLC
    Inventors: David D. Jackson, JR., Jakob B. Cagle, Charlie B. Groover
  • 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
  • Patent number: 8807583
    Abstract: A method for controlling pressure equalization in running gear for a utility vehicle and having a drive axle and at least one trailing axle without drive function. The includes assigning each axle to a pressure chamber on the left-hand and right-hand sides of the vehicle. The pressure ratio of the pressure chambers between the drive axle and the trailing axle is set independently for the two sides of the vehicle as a function of detected signals.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: August 19, 2014
    Assignee: WABCO GmbH
    Inventors: Bijan Gerami-Manesch, Johann Lucas
  • Publication number: 20140225341
    Abstract: Flexible spring members can include a flexible spring wall and at least one girdle hoop. The flexible spring wall can include a plurality of convoluted wall portions disposed in longitudinally-spaced relation to one another. The girdle hoop can take the form of an annular ring that is at least partially formed from a non-metallic material and can be positioned longitudinally between adjacent ones of the plurality of convoluted wall portions. The girdle hoop can be at least partially embedded within the flexible spring wall and can operate to substantially inhibit radially-outward expansion of the flexible spring wall during inflated conditions and/or use. Gas spring assemblies and methods of manufacture can include one or more of such flexible spring members.
    Type: Application
    Filed: February 14, 2014
    Publication date: August 14, 2014
    Applicant: Firestone Industrial Products Company, LLC
    Inventors: Aaron E. Vetor, David D. Jackson, JR.
  • Patent number: 8801015
    Abstract: A vehicle includes a pair of front wheels; a pair of rear wheels; a cabin frame portion; a first support frame portion extending forward from the cabin frame portion; a second support frame portion extending rearward from the cabin frame portion; a first suspension system supported by the first support frame portion and suspending the front wheels; and a second suspension system supported by the second support frame portion and suspending the rear wheels. Each of the first suspension system and the second suspension system includes a damping unit. Each damping unit includes a pair of dampers generating damping forces via oil viscosity resistance; an adjuster that adjusts the damping forces generated by the dampers; and a pair of oil paths which connect the dampers with the adjuster.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: August 12, 2014
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Akira Inui, Takashi Yamamura
  • Publication number: 20140217692
    Abstract: A vehicle suspension device includes a first fluid path through which a first upper port opening into a first hydraulic cylinder and a second lower port opening into a second hydraulic cylinder communicate with each other, a second fluid path through which a second upper port opening into the second hydraulic cylinder and a first lower port opening into the first hydraulic cylinder communicate with each other, a first hydraulic damping mechanism in the first fluid path, a second hydraulic damping mechanism in the second fluid path, a first accumulator connected to the first fluid path via a first branch fluid path having a first auxiliary hydraulic damping mechanism, a second accumulator connected to the second fluid path via a second branch fluid path having a second auxiliary hydraulic damping mechanism, and a bridge fluid path through which the first and second branch fluid paths are connected together.
    Type: Application
    Filed: October 25, 2012
    Publication date: August 7, 2014
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Akira Kato, Takamasa Kato, Yoshifumi Ohtani, Katsuhiko Takasu, Masaaki Oishi
  • Publication number: 20140203530
    Abstract: A hydraulic strut system that damps vehicle vibration and includes a compressible fluid, a strut, and a valve plate. The strut includes three concentric tubes defining an inner cavity, an intermediary cavity, and an outer reservoir cavity, the inner cavity and intermediary cavity being fluidly coupled, wherein the inner cavity receives a piston that divides the inner cavity into a first volume and a second volume, the piston having an aperture that allows one way flow from the first volume to the second volume. The valve plate is removably coupled to the strut, and includes a first fluid path that allows one-way fluid flow from the intermediary cavity to the reservoir cavity, the first fluid path including a damping valve that damps fluid flowing therethrough; and a second fluid path that allows one-way fluid flow from the reservoir cavity to the inner cavity, the second fluid path further including a replenishment valve.
    Type: Application
    Filed: September 17, 2013
    Publication date: July 24, 2014
    Applicant: Fluid Ride, Ltd.
    Inventors: Joshua Coombs, Jeremy Edmondson
  • Patent number: 8777246
    Abstract: A compressed air supply assembly for operating a pneumatic assembly includes a compressed air supply; a compressed air connection to the pneumatic assembly; a purge connection to the environment; a pneumatic main line between the compressed air supply and the compressed air connection comprising an air dryer; a purge line between the compressed air connection and the purge connection; and a solenoid valve arrangement with a control valve to control a purge valve. The control valve is connected to a control valve connection in a pneumatic control line connected to a pressure control connection of the purge valve; and the purge valve is connected to a purge valve connection in the purge line. A pressure-maintaining device is connected to the pneumatic control line and maintains control pressure at the pressure control connection when the purge valve connection is open, independently of pressure in the purge line and/or the main line.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: July 15, 2014
    Assignee: WABCO GmbH
    Inventor: Jorg Meier
  • Patent number: 8770592
    Abstract: A shock absorber for a vehicle having a damper and a first and second springs mounted coaxially around the damper and a preload adjuster for partially compressing at least one of the springs independently of the compression stroke. In one embodiment the preload adjuster is remotely controllable. In another embodiment the shock absorber includes an additional mechanism for preloading at least one of the springs.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: July 8, 2014
    Assignee: Fox Factory, Inc.
    Inventor: Christopher Paul Cox
  • Patent number: 8764029
    Abstract: A gas spring for a vehicle suspension system includes a cylinder, a rod, and an accumulator. The rod is disposed within the cylinder, and relative movement between the rod and the cylinder changes the volume of a chamber formed between the rod and the cylinder. The accumulator is in gaseous communication with the chamber such that a continuous body of gas extends between the chamber and the accumulator.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: July 1, 2014
    Assignee: Oshkosh Corporation
    Inventors: Roy Venton-Walters, Aaron J. Rositch, Jesse L. Knoble, Erik Ellifson, Mark L. Steckling
  • Patent number: 8720938
    Abstract: An air suspension system of a tandem axle assembly for a trailer includes a front axle air spring configured to be coupled to a front axle assembly of the tandem axle assembly and a rear axle air spring configured to be coupled to a rear axle assembly of the tandem axle assembly. The air suspension system further includes an air reservoir in fluid communication with the front axle air spring and the rear axle air spring and a ratio valve in fluid communication with the air reservoir, the front axle air spring, and the rear axle air spring. The ratio valve is positioned between the air reservoir and the front axle air spring. Further, the ratio valve is selectively operable to send a lesser amount of air from the air reservoir to the front axle air spring than to the rear axle air spring.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: May 13, 2014
    Assignee: Wabash National, L.P.
    Inventor: Rodney P. Ehrlich
  • Patent number: 8672337
    Abstract: A multi-point hydraulic suspension system for a land vehicle has two or more individual hydraulic actuators. These two or more actuators are each operatively arranged between a suspended structure and a wheeled base of the land vehicle for relative positioning one another. A common supply of pressurized fluid has a given pressure and a selectively operable pump with an inlet and an outlet, for increasing the given pressure of the common supply of pressurized fluid. A fluid reservoir is in selective fluid communication with the inlet of the pump. Controllable valve means are interposed between each of the two or more actuators and the common supply of pressurized fluid for selectively bringing each of the two or more actuators into fluid communication with the common supply of pressurized fluid in response to a control unit for controlling the valve means and the pump.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: March 18, 2014
    Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
    Inventors: Albertus Clemens Maria van der Knaap, Arjan Pieter Teerhuis
  • Patent number: 8641051
    Abstract: A vehicle suspension system and a method of control. The system may include an air cylinder, an air spring piston, and an air spring. The air spring piston may be positioned with respect to the air spring with the air cylinder.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: February 4, 2014
    Assignee: ArvinMeritor Technology, LLC
    Inventors: Gregory D. Pavuk, Edwin D. Lorenz
  • Publication number: 20130320646
    Abstract: An air suspension device for vehicles, in particular for commercial vehicles, including a valve block for aerating a plurality of air-spring bellows with compressed air from a compressed-air supply or for venting the air-spring bellows through an air vent, the valve block including at least one air-bellows valve assigned to an air-spring bellows or a group of air-spring bellows of the plurality of air-spring bellows, for individually aerating and venting this air-spring bellows or group of air-spring bellows. The present system provides for the valve block to additionally include a valve device, by which the at least one air-bellows valve may be simultaneously decoupled from the compressed-air supply and the air vent, and for a pressure sensor for measuring the air pressure in the flow path between the valve device and the at least one air-bellows valve to be provided on the other side of the corresponding air-spring bellows.
    Type: Application
    Filed: August 5, 2013
    Publication date: December 5, 2013
    Inventors: Winifried Geiger, Guenther Fecht
  • Publication number: 20130320645
    Abstract: The invention relates to a level control arrangement for vehicles with at least one air spring by which a vehicle body is cushioned with regard to at least one vehicle axle, having the following characteristics: a compressed air generator, which can be connected to the air spring by means of an air dryer, the compressed air generator can be connected to the atmosphere by a check valve, which opens in the intake direction of the compressed air generator, the air spring, which can be connected to the atmosphere for discharge purposes via the air dryer or a pneumatically controllable directional valve, wherein the pressure of the air spring is applied to a pneumatic control input of the first directional valve via a second controllable directional valve against the force of a reset force that acts on the pneumatic control input, the pneumatic control input of the first directional valve can be connected to the atmosphere, for the purpose of ending a discharge process of the spring, a line with a compressed air a
    Type: Application
    Filed: May 24, 2013
    Publication date: December 5, 2013
    Inventor: Thomas Gall
  • Patent number: 8573605
    Abstract: An active suspension system for a vehicle including at least one fluid operated ram having a cylinder and a main piston mounted therein for reciprocating movement, control means for controlling an equilibrium position of the piston in the ram in response to lateral acceleration of the vehicle in order to counter the effects of body roll of the vehicle, and wherein the ram includes shock absorbing means for permitting rapid movement of the piston from the equilibrium position when operating fluid in the ram is subjected to transient increases in pressure.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: November 5, 2013
    Inventor: Phillip Di Maria
  • Patent number: 8544863
    Abstract: A damping and stiffness system for a vehicle suspension system including at least two forward and two rearward wheel assemblies each associated with vehicle resilient support means (27-30) between a vehicle body and the wheel assemblies. The damping and stiffness system including: a wheel ram (11-14) with at least a compression chamber (45-48) between each wheel assembly and the vehicle body and a load distribution unit (76). The load distribution unit (76) includes two pairs of chambers (77-80), each chamber (77-80) being divided into front (89, 90) and back (91, 92) system chambers (which vary in volume proportionally and in opposite senses therein with piston motion) and the remaining pitch chambers (93-96) by interconnected pistons (81-84) supported therein. The compression chamber (45-48) of each wheel ram (11-14) is in fluid communication with a respective system chamber (89-92) wherein the vehicle is primarily supported by the vehicle resilient support means (27-30).
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: October 1, 2013
    Assignee: Kinetic Pty Ltd.
    Inventors: Christopher Paul Revill, Raymond Andrew Munday
  • Patent number: 8534687
    Abstract: A hydraulic strut system that damps vehicle vibration and includes a compressible fluid, a strut, and a valve plate. The strut includes three concentric tubes defining an inner cavity, an intermediary cavity, and an outer reservoir cavity, the inner cavity and intermediary cavity being fluidly coupled, wherein the inner cavity receives a piston that divides the inner cavity into a first volume and a second volume, the piston having an aperture that allows one way flow from the first volume to the second volume. The valve plate is removably coupled to the strut, and includes a first fluid path that allows one-way fluid flow from the intermediary cavity to the reservoir cavity, the first fluid path including a damping valve that damps fluid flowing therethorugh; and a second fluid path that allows one-way fluid flow from the reservoir cavity to the inner cavity, the second fluid path further including a replenishment valve.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: September 17, 2013
    Assignee: Fluid Ride Ltd.
    Inventors: Joshua Coombs, Jeremy Edmondson
  • Publication number: 20130238191
    Abstract: A vehicle has a frame, at least one front wheel connected to the frame, at least one front suspension assembly connecting the at least one front wheel to the frame, at least one rear wheel connected to the frame, and at least one rear suspension assembly connecting the at least one rear wheel to the frame. At least one of the at least one front and at least one rear suspension assemblies includes an air spring. A seat is connected to the frame. An engine is connected to the frame and is operatively connected to at least one of the wheels. An air compressor is connected to the frame and fluidly communicates with the at least one air spring for supplying air to the at least one air spring. A control unit is electrically connected to the air compressor for controlling an operation of the air compressor.
    Type: Application
    Filed: April 23, 2013
    Publication date: September 12, 2013
    Applicant: BOMBARDIER RECREATIONAL PRODUCTS INC.
    Inventors: Daniel LECLERC, Christian DE GRAMMONT