Piston Patents (Class 267/124)
  • Patent number: 10005333
    Abstract: An end member assembly (EMI) includes an end member body (400) and a support column (500). The end member body (400) includes an outer side wall and an inner side wall that together at least partially define an end member reservoir. The inner side wall at least partially defines a passage through the end member body. The support column (500) extends into the passage and is accessible from along opposing ends of the passage. A sealing element can be disposed in fluid communication between the end member body and the support column. An elongated gas damping passage can extend through the end member assembly in fluid communication with the end member reservoir. A gas spring assembly can include a flexible spring member (200) that at least partially defines a spring chamber with an end member (900) and the end member assembly (EMI) on opposing ends thereof. A restraining assembly (1000) can be secured within the spring chamber.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: June 26, 2018
    Assignee: Firestone Industrial Products Company, LLC
    Inventors: Joshua R. Leonard, Graham R. Brookes, Pradipta N. Moulik, Stephen C. Street, Corey S. Hart, Daniel P. Steele
  • Patent number: 9498699
    Abstract: The invention relates to a device for receiving a boot on a gliding apparatus, such device comprising a binding base extending along a longitudinal direction from a rear end to a front end, and widthwise from a first side to a second side; a heel loop extending in the direction of the rear end of the receiving device, the heel loop being self-supported by at least one attachment point, the heel loop being connected to the binding base by a connection system comprising at least one point of attachment with the binding base. The connection system between the heel loop and the binding base enables relative spacing or approaching movement between the heel loop and the binding base, and comprises at least one connecting element connecting the rear portion of the heel loop to the binding base and limiting the spacing between the binding base and the rear portion while allowing the approaching movement.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: November 22, 2016
    Assignee: SALOMON S.A.S.
    Inventor: Henri Rancon
  • Patent number: 9108698
    Abstract: A first front fork includes an outer tube, an inner tube, a tubular cylinder provided inside the outer tube and the inner tube, a rod member moving relatively in an axial direction of the cylinder and having a space portion inside, which is formed in the axial direction, a piston fixed to an end portion of a wheel side of the rod member and sectioning a space in the cylinder into part of a rebound air spring chamber and an inner air spring chamber and a rod guide fixed to an end portion of a vehicle-body side of the cylinder and sectioning a space in the inner tube into part of the rebound air spring chamber and an outer air spring chamber.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: August 18, 2015
    Assignee: SHOWA CORPORATION
    Inventor: Daisuke Ikeda
  • Publication number: 20150129072
    Abstract: A biasing force adjustment device includes: a cylindrical component having a first thread part; a reciprocate component accommodated in the cylindrical component; a biasing portion that biases the reciprocate component in a first direction; and a biasing force adjustment component that adjusts a biasing force of the biasing portion. The biasing force adjustment component has a second thread part engaged with the first thread part so as to control the position of the biasing force adjustment component relative to the cylindrical component, and a regulation part that regulates movement of the biasing force adjustment component relative to the cylindrical component by being deformed in a radial direction by external force applied in the first direction.
    Type: Application
    Filed: November 10, 2014
    Publication date: May 14, 2015
    Inventors: Tetsuya HARA, Norihisa ACHIHA, Hiroyuki NAKANE, Masaki AIHARA
  • 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
  • Publication number: 20150076753
    Abstract: A gas spring for forming equipment. A casing includes an axially extending side wall, an open end, a transversely extending closed end wall axially spaced from the open end, a pressure chamber established in part by the side and end walls to receive a gas under pressure. A piston rod is received at least in part in the casing for reciprocation between extended and retracted positions. A piston rod housing is received at least in part in the casing between the piston rod and the casing. An overtravel pressure relief feature may be carried in a vent passage through the casing and/or in the piston rod housing.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 19, 2015
    Inventor: Jonathan P. Cotter
  • Publication number: 20150069682
    Abstract: A piston rod housing assembly for a gas spring includes a piston rod housing having an interior end, an exterior end axially spaced from the interior end, and an overtravel pressure relief passage extending through the piston rod housing and intersecting the exterior end.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 12, 2015
    Inventor: Jonathan P. Cotter
  • Publication number: 20150040702
    Abstract: A length-adjustable unit includes a tubular outer component, an inner component displaceably guided in the outer component, issues from the outer component arranged outside of the outer component has a connecting element, and an additional connecting element arranged at the assembly end, opposing the exit end, of the outer component. The additional connecting element, or an intermediate element rigidly connected to the assembly end of the outer component, has at least one annular shoulder extending in the circumferential direction of the outer component over the full 360°, while at least one engaging element is associated with the intermediate element, which is rigidly connected to the assembly end of the outer component, or the additional connecting element, and this engaging element is engaged with the annular shoulder to be slidingly displaceable in the circumferential direction but positively engaged in a longitudinal direction.
    Type: Application
    Filed: January 23, 2013
    Publication date: February 12, 2015
    Applicant: Stabilus GmbH
    Inventors: Jan Bochen, Jörg Wolf, Christof Theis, Danniel Lange
  • Publication number: 20150021839
    Abstract: A hydraulic pressure spring includes a hollow cylindrical cylinder having a threaded portion at one end thereof; a closure means which is threadedly engaged with the threaded portion at the one end of the cylinder and closes the one end of the cylinder; a closure means which is provided at the other end of the cylinder and closes the other end of the cylinder; a compressible liquid which is sealed in an interior of the cylinder and is pressurized to a predetermined pressure; a rod which is passed through the closure means movably in an axial direction A and causes the liquid in the interior of the cylinder to undergo a pressure rise as the rod enters the interior of the cylinder; and a piston disposed in the interior of the cylinder and attached to one end of the rod.
    Type: Application
    Filed: October 8, 2014
    Publication date: January 22, 2015
    Inventors: Teruo ARAMIZU, Go TANAKA
  • Publication number: 20140374973
    Abstract: A grease shut-off gas cylinder comprises an outer cylinder having a guide hole; a spindle inserted in the guide hole and having an inner pipe and an outer pipe; a piston rod having a piston wherein the bottom of a rod is fixed on a bottom surface of the outer cylinder and the top of the rod is slide-inserted in the inner pipe; a valve body secured to top of the spindle and controlling the spindle to move up or down about the piston on the basis of the operations of a valve pin which controls the moving direction of gas; a bushing member protruding from an outer side of the bottom of the spindle and coming into slide contact with an inner wall of the outer cylinder; and a bushing cap secured to top of the outer cylinder and having a guide hole configured to guide the spindle.
    Type: Application
    Filed: May 19, 2014
    Publication date: December 25, 2014
    Applicant: KOREA GAS SPRING CO., LTD.
    Inventor: Young Sang JUN
  • Patent number: 8844910
    Abstract: A gas strut assembly includes a housing defining an interior space. A rod is coupled to the housing, and is slideably moveable between an extended position and a retracted position. A flexible member is secured in position relative to the housing. A rigid member is coupled to and moveable with the rod. The flexible member includes at least one displaceable member that moves radially away from the central axis in response to a second radial force component of a closing force when engaged by the rigid member moving from the extended position into the retracted position. The flexible member includes a multi-layered structure that changes shape in response to a change in temperature to affect the magnitude of the second radial force component required to move the displaceable member.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: September 30, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Gary W Krajenke, Alvin N Standard, Babu R Amarnath
  • Patent number: 8844912
    Abstract: A shock absorber for a vehicle, having a bellows piston, bellows, and a fluid as the damping medium. The shock absorber has a first partition wall, which is situated on the bellows piston, and is implemented to separate a volume area of the bellows piston from a volume area of the bellows. The first partition wall has a first opening, which is implemented to limit a fluid flow between the volume area of the bellows piston and the volume area of the bellows. The shock absorber further has a sprung mass, which is situated inside the shock absorber to influence the fluid flow inside the shock absorber.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: September 30, 2014
    Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Thomas Naber
  • Publication number: 20140265069
    Abstract: A visco-elastic damping assembly includes a mount housing having first and second ends and a hollow interior. A piston assembly disposed within the mount housing includes axially opposed first and second piston rod ends in which the first piston rod end is defined by a first diameter and the second piston rod end is defined by a second diameter substantially larger than the first diameter. A high pressure hydraulic reservoir is defined within the mount housing wherein an applied load component acting on the second piston rod end causes corresponding movement of the piston assembly against fluid retained in the hydraulic reservoir, enabling a first static spring rate as well as a second higher dynamic spring rate.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventor: ITT MANUFACTURING ENTERPRISES, LLC
  • Publication number: 20140263766
    Abstract: The current invention discloses several methodologies that mitigate shock loading and propensity to resonance in agricultural spray boom structures. These include a near planar linkage for decoupling the boom assembly from the vehicle. This serves to permit further aspects of the invention to: Use the combined mass of the booms and center section as the tuned mass of a tuned mass damper: Act as an enabling part of a boom compliant suspension system to mitigate shock loadings otherwise imposed on the boom system, and: Act as an enabling part of an active boom height and roll control systems to permit the accurate navigation of the boom over undulating terrain. Further aspects include the incorporation of tuned mass dampers in the boom structure and components; and the use of the mass and operation of the boom outboard “breakaway” sections as tuned mass dampers.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: SPECIALTY ENTERPRISES, LLC
    Inventor: Roy Venton-Walters
  • Publication number: 20140265070
    Abstract: A piston rod housing assembly for a gas spring includes a piston rod housing having an interior end, an exterior end axially spaced from the interior end, and an overtravel pressure relief passage extending axially through the piston rod housing and intersecting the exterior end. The assembly also includes an overtravel pressure relief member carried in the overtravel pressure relief passage and having an exterior end that projects axially beyond the piston rod housing.
    Type: Application
    Filed: September 19, 2013
    Publication date: September 18, 2014
    Applicant: DADCO, Inc.
    Inventor: Jonathan P. Cotter
  • Publication number: 20140167337
    Abstract: An air spring piston for a heavy-duty vehicle includes a top portion and a bottom portion. The top portion includes a bumper and a connecting means for an air spring bellows. The bottom portion is mounted on a structure of the vehicle. The top portion and bottom portion are connected to each other to form a piston chamber and include a bearing means for reacting bumper forces from the bumper to the bottom portion and to the structure of the vehicle on which the bottom portion is mounted. The piston chamber is in fluid communication with a bellows chamber of the air spring via an opening, wherein the geometry of the opening is such that during dynamic spring movements, the pressure in the piston chamber and the pressure in the bellows chamber are not equalized.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 19, 2014
    Applicants: Contitech Luftfedersysteme GmbH, Hendrickson USA, L.L.C.
    Inventors: John E. Ramsey, Thomas J. Long, Brian R. Anderson, Carsten Hansen, Mohamad Taghizadeh Mershon, Gregory A. Richardson, Armando Vazquez Fernandez
  • Patent number: 8752810
    Abstract: A fluid strut includes a frangible locking member including a generally cylindrical locking pin mounted to an outer cylindrical housing of the strut and extending radially inwardly toward a gas spring cylinder. The locking pin is movable between operative and inoperative positions. In the operative position, the spring-loaded frangible locking pin extends into engagement with the gas cylinder and can advance radially to a locking position once the outer housing extends beyond the location of the gas cylinder. In an inoperative position, the locking pin is held in a retracted position. The end of the locking pin has a reduced diameter, such that, if a purposeful force is placed upon the strut when in a locked position, the pin can shear, allowing the rod to be retracted within the cylinder and the closure member to be closed without damage.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: June 17, 2014
    Assignee: Suspa Incorporated
    Inventors: Ryan T. Anderson, Troy A. Waterman, Kevin Thomas Braat
  • Patent number: 8701846
    Abstract: A shock absorber includes a hydraulic compression stop. The hydraulic stop includes a pressure tube surrounding the pressure tube of the shock absorber and a piston in hydraulic communication with the interior of the pressure tube. The piston can be disposed within the pressure tube and can be attached to the pressure tube or to the shock absorber. The hydraulic stop can also include a hydraulic fluid chamber and the piston can be disposed within the hydraulic fluid chamber.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: April 22, 2014
    Assignee: Tenneco Automotive Operating Company Inc
    Inventors: Koen Reybrouck, M'Hand Nait Oukhedou, Simon Anne de Molina
  • Publication number: 20140091548
    Abstract: An end member for a gas spring assembly is dimensioned to receivingly engage an end of a flexible wall. The end member can be formed from polymeric material and can include a side wall receiving the end of the flexible wall. The end member can also include a base wall extending transverse to the side wall and dimensioned to abuttingly engage a jounce bumper of the gas spring assembly. The end member can include a mounting ridge or a mounting channel for engaging an associated structural component. A gas spring assembly including such an end member is also included.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 3, 2014
    Applicant: Firestone Industrial Products Company, LLP
    Inventors: Michael E. Ratz, Stephen C. Street, Paul P. Koeske
  • Publication number: 20140061984
    Abstract: An end member assembly includes an end member body and an end member insert. The end member body can include an outer side wall, an inner side wall disposed radially inward relative to the outer side wall, and a bottom wall that together with the inner side wall at least partially define a cavity. The end member insert can be supported on the end member body and selectively rotatable relative thereto. A gas spring assembly and a suspension system are also included.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 6, 2014
    Inventors: Corey S. Hart, Stephen C. Street, Paul P. Koeske
  • Publication number: 20140061983
    Abstract: End members are dimensioned for securement to a flexible wall of a gas spring assembly. The end members can include an end wall, and inner and outer crimp walls that extend from the end wall and are disposed in spaced relation to one another such that gap is formed therebetween. A plurality of connector walls extend between and operatively interconnect the inner and outer crimp walls. Gas spring assemblies including such an end member and suspension systems including one or more of such gas spring assemblies are also included.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Applicant: Firestone Industrial Products Company, LLC
    Inventor: Brian S. DeBruler
  • Publication number: 20140054833
    Abstract: A roll-off piston for an air spring rolling-lobe flexible member, the interior of the roll-off piston is connected to the interior of the air spring. The roll-off piston includes two parts, namely, a pot-shaped piston lower part and a piston upper part connected in an air-tight manner to the lower part. A support for a stop buffer is integrated in the roll-off piston. The support includes two interacting parts, of which one part is configured as part of the piston upper part and the other part is configured as part of the pot-shaped lower part and extends from the base thereof. Both support parts interact in order to absorb forces acting substantially axially.
    Type: Application
    Filed: October 31, 2013
    Publication date: February 27, 2014
    Applicant: ContiTech Luftfedersysteme GmbH
    Inventors: Eckard Neitzel, Dieter Offermann
  • Publication number: 20130341842
    Abstract: The invention relates to a hydropneumatic piston/cylinder arrangement, in particular for use as a spring element and/or shock absorber element, comprising a cylinder (1) and a piston (15) which is axially movable in the cylinder chamber (5) of said cylinder, the cylinder chamber being tilled with hydraulic fluid. The piston (15) is connected to a piston rod (13) which extends outwards in a sealed manner from one end of the cylinder (1), and the base of said piston, which is remote from the piston rod (13), can he operatively connected to a pneumatic spring mechanism (7) in order to convey fluid. Said piston/cylinder arrangement is characterised in that a piston accumulator (7), the accumulator piston (19) of which directly adjoins the hydraulic fluid situated in the cylinder chamber (5), is provided as the spring mechanism.
    Type: Application
    Filed: December 8, 2011
    Publication date: December 26, 2013
    Inventor: Norbert Weber
  • Publication number: 20130320603
    Abstract: The invention relates to a piston for an air spring, wherein the piston has a piston skirt, wherein the outer contour of the piston skirt can be variably changed in order to vary an air spring characteristic of the air spring.
    Type: Application
    Filed: January 25, 2012
    Publication date: December 5, 2013
    Applicant: CONTINENTAL TEVES AG & CO. oHG
    Inventor: Ulrich Orlamünder
  • Publication number: 20130307203
    Abstract: A gas strut assembly includes a housing defining an interior space. A rod is coupled to the housing, and is slideably moveable between an extended position and a retracted position. A flexible member is secured in position relative to the housing. A rigid member is coupled to and moveable with the rod. The flexible member includes at least one displaceable member that moves radially away from the central axis in response to a second radial force component of a closing force when engaged by the rigid member moving from the extended position into the retracted position. The flexible member includes a multi-layered structure that changes shape in response to a change in temperature to affect the magnitude of the second radial force component required to move the displaceable member.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 21, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gary W. Krajenke, Alvin N. Standard, Babu R. Amarnath
  • Publication number: 20130300041
    Abstract: A gas spring piston (3) includes an external retention feature (254) that is capable of receivably engaging and retention on an associated structural component (1cs). The gas spring piston (204) includes an outer side wall (228), a base wall dimensioned to abuttingly engage the associated structural component (1cs), and at least one external retention feature (254) disposed along the base wall (228). A gas spring assembly (200), a suspension system, a gas spring piston kit, and a method are also included.
    Type: Application
    Filed: January 26, 2012
    Publication date: November 14, 2013
    Applicant: Firestone Industrial Products Company, LLC
    Inventors: Paul P. Koeske, Stephen C. Street
  • Publication number: 20130207326
    Abstract: A gas spring for forming equipment, a piston rod for the gas spring, and a shock collar for the gas spring carried by the piston rod. The shock collar may be resiliently flexible, and plastically deformable so as to at least partially collapse, and the piston rod may include features to disrupt a gas spring seal upon at least partial collapse of the shock collar.
    Type: Application
    Filed: January 29, 2013
    Publication date: August 15, 2013
    Applicant: DADCO, INC.
    Inventor: DADCO, INC.
  • Publication number: 20130119590
    Abstract: A fluid strut includes a frangible locking member including a generally cylindrical locking pin mounted to an outer cylindrical housing of the strut and extending radially inwardly toward a gas spring cylinder. The locking pin is movable between operative and inoperative positions. In the operative position, the spring-loaded frangible locking pin extends into engagement with the gas cylinder and can advance radially to a locking position once the outer housing extends beyond the location of the gas cylinder. In an inoperative position, the locking pin is held in a retracted position. The end of the locking pin has a reduced diameter, such that, if a purposeful force is placed upon the strut when in a locked position, the pin can shear, allowing the rod to be retracted within the cylinder and the closure member to be closed without damage.
    Type: Application
    Filed: November 16, 2011
    Publication date: May 16, 2013
    Applicant: Suspa Incorporated
    Inventors: Ryan T. Anderson, Troy A. Waterman, Kevin Thomas Braat
  • Patent number: 8424657
    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: Grant
    Filed: December 27, 2010
    Date of Patent: April 23, 2013
    Inventor: Jung Yu Hsu
  • Patent number: 8418998
    Abstract: A damper includes a vessel; a partitioning member which partitions the interior of the vessel into two chambers for accommodating a viscous fluid, and which rotates together with the vessel in a direction and is movable in an axial direction; a moving force imparting structure for imparting to the partitioning member a moving force in a direction by the input of rotation in a direction; a resilient structure for resiliently urging the partitioning member in a direction; a through hole for allowing the chambers inside the vessel to communicate with each other; and an allowing/limiting member which allows the viscous fluid to flow reciprocally between the chambers through the through hole, and which limits the flow of the viscous fluid in one chamber into the other chamber in the direction through the through hole.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: April 16, 2013
    Assignee: Oiles Corporation
    Inventors: Akihiko Okimura, Naohiro Horita, Yoshiteru Igarashi
  • Publication number: 20130026687
    Abstract: A gas spring suitable for controlling motion of a linear power generator or a linear machine. According to an embodiment, the gas spring comprises a cylinder and a pressure control network. The cylinder comprises two pistons in a coaxial arrangement and three controllable gas volumes or chambers. Each of the pistons includes a piston rod or shaft that is configured to couple to respective drive shaft(s) on the linear power generator. The pressure control network is operatively coupled to each of the three gas volumes and configured with a controller to control the gas pressure in the gas volumes to vary the resistance of the pistons to the movement of the respective drive shaft(s) on the linear power generator. According to another embodiment, the cylinder comprises one piston and two controllable gas volumes or chambers operatively coupled to the pressure control network.
    Type: Application
    Filed: July 27, 2011
    Publication date: January 31, 2013
    Inventor: MIRO MILINKOVIC
  • Publication number: 20120306132
    Abstract: A gas spring is provided that can comprise at least one rod, at least one guide bushing, and at least one dynamic seal. The rod can slide inside at least one cylinder containing gas. The dynamic seal can be interposed between the rod and the cylinder. In some embodiments, the guide bushing can be formed from a first mixture comprising a thermoplastic polymer and a solid lubricant filler. Further, in some embodiments, the dynamic seal can be formed from a second mixture comprising a thermoplastic elastomer and a mineral filler or a powder of thermoplastic polymer.
    Type: Application
    Filed: February 10, 2010
    Publication date: December 6, 2012
    Inventors: Alberto Bordignon, Simone Bordignon
  • Publication number: 20120228812
    Abstract: A cover opening-and-closing support mechanism is provided that reliably locks a gas spring, and in which a rod section of a gas spring is not damaged by a stopper portion. The cover opening-and-closing support mechanism includes: a gas spring equipped with pivot points at both end portions and including a cylinder section and a rod section; a stopper portion rotatably provided at the pivot point at a first of the end portions, the stopper portion making contact with the cylinder section when the gas spring has been extended so as to lock the gas spring; a gas spring stopper including a limiter portion that makes contact with the cylinder section before the stopper portion makes contact with the rod section; and a release handle portion for releasing the locking, provided at the gas spring stopper on substantially an opposite side to the stopper portion, such that the gas spring stopper swings towards substantially the opposite side to the stopper portion due to a weight of the release handle portion.
    Type: Application
    Filed: December 1, 2010
    Publication date: September 13, 2012
    Applicant: OKI ELECTRIC INDUSTRY CO., LTD.
    Inventor: Toshimichi Oosawa
  • Patent number: 8231113
    Abstract: A cooperative mounting arrangement for an end member or spacer of a gas spring assembly includes a recess formed into one of the end member and the spacer. A projection is provided on or along an associated structural component. The recess receives the projection such that lateral forces acting on the end member of the gas spring assembly can be transferred to the associated structural component.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: July 31, 2012
    Assignee: Firestone Industrial Products Company, LLC
    Inventors: Andrew Grabarz, Stephen C. Street, Pradipta N. Moulik
  • Patent number: 8210609
    Abstract: A damper 1 includes a vessel 2; a partitioning member 6 which partitions the interior of the vessel 2 into two accommodation chambers 4 and 5 for accommodating a viscous fluid 3, and which rotates together with the vessel 2 in an R direction and is movable in an axial direction A; a moving force imparting means 7 for imparting to the partitioning member 6 a moving force in an A1 direction by the input of rotation in an R1 direction; a resilient means 8 for resiliently urging the partitioning member 6 in an A2 direction; a through hole 9 for allowing the two accommodation chambers 4 and 5 inside the vessel 2 to communicate with each other; and an allowing/limiting member 10 which allows the viscous fluid 3 accommodated in the two accommodation chambers 4 and 5 in the vessel 2 to flow reciprocally between the two accommodation chambers 4 and 5 through the through hole 9, and which limits the flow of the viscous fluid 3 in the accommodation chamber 4 into the accommodation chamber 5 in the A2 direction through t
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: July 3, 2012
    Assignee: Oiles Corporation
    Inventors: Akihiko Okimura, Naohiro Horita, Yoshiteru Igarashi
  • Publication number: 20120161375
    Abstract: A gas spring piston includes a piston body with an end wall and a side wall that projects longitudinally from the end wall. The side wall includes an outer surface and a retainment ridge spaced longitudinally from the end wall such that the outer surface is disposed between the retainment ridge and the end wall. The retainment ridge projects radially-outwardly beyond the outer surface such that a shoulder surface is formed adjacent the outer surface. The outer surface includes an engagement feature that is dimensioned to compressively engage an associated flexible wall. The engagement feature is positioned along the outer surface in spaced relation to the end wall and the shoulder surface of the retainment ridge. A gas spring assembly and a method of assembling a gas spring that include such a gas spring piston are also disclosed.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 28, 2012
    Applicant: Firestone Industrial Products Company, Inc.
    Inventor: Paul P. Koeske
  • Publication number: 20120098173
    Abstract: An air spring including a piston, and a flexible sleeve connected to the piston. The flexible sleeve forms a compression chamber and includes a lobe that rolls along a surface of the piston during compression of the flexible sleeve. The flexible sleeve is connected to the piston by an inverted crimp connection. A crimp ring used providing the inverted crimp connection includes a rebound travel limiter around which the lobe is formed.
    Type: Application
    Filed: October 26, 2010
    Publication date: April 26, 2012
    Applicant: VIBRACOUSTICS NORTH AMERICA, L.P.
    Inventor: Michael L. Crabtree
  • Patent number: 8123005
    Abstract: An end-stop damper including a damper body in the form of a cylinder, wherein a piston is guided so that it is displaceable in the cylinder receiving chamber. An air pressure is formed in the receiving chamber produces a braking force acting on the piston during its displacement. The receiving chamber includes at least one pressure reducing opening and the piston includes a bellows section which is actively connected to the cylinder according to pressure conditions in the receiving chamber. This invention substantially simplifies the structural design of the end-stop damper because the piston and the bellows section are connected to each other so that they are formed in one piece.
    Type: Grant
    Filed: November 19, 2005
    Date of Patent: February 28, 2012
    Assignee: Karl Simon GmbH & Co. KG
    Inventors: Ulrich Bantle, Jürgen Eschle
  • Publication number: 20110290575
    Abstract: A gas spring with a center longitudinal axis including a cylinder includes a piston in the cylinder that divides the cylinder into a first cylinder chamber and a second cylinder chamber. A piston rod is arranged at the piston guided out of the cylinder at a second end opposite the first end. A connection element with a socket housing is arranged at each of the first end and the free end of the piston rod for receiving a ball head. At least one of the two socket housings comprises a ball socket with a longitudinal extension and a transverse dimension, the longitudinal extension is greater than the transverse dimension. A catch element having a spring tongue is arranged at the first end for insertion together with the catch element into a cover tube that locks into a recess associated with it in the cover tube.
    Type: Application
    Filed: May 26, 2011
    Publication date: December 1, 2011
    Applicant: Stabilus GmbH
    Inventors: Nadja Kaiser, Axel Knopp, Gerhard Stein, Jörg Wolf
  • Publication number: 20110283478
    Abstract: A dampening device for use in a dampening system that operates to dampen and slow the movement of a closing door thereby reducing noise and the risk of injury, the dampening device including a piston and dampening apparatus that are moveable within a cylinder and an anchoring apparatus, the dampening device attached to various positions along a door frame or door panel.
    Type: Application
    Filed: May 20, 2010
    Publication date: November 24, 2011
    Applicant: GLOBAL SAFETY DEVICES, LLC
    Inventors: Bret Berry, Jeremy Higginson, Adam Pike
  • Publication number: 20110266410
    Abstract: A suspension system between two bodies, the suspension system including: a first pressure chamber provided between the bodies; and at least one other pressure chamber provided between the bodies such that the at least one other pressure chamber opposes the action of the first pressure chamber; and a control system to control the pressure and volume in the first pressure chamber and the at least one other pressure chamber to adjust the stiffness value of the suspension system independently of adjusting a distance between the bodies.
    Type: Application
    Filed: April 29, 2011
    Publication date: November 3, 2011
    Inventors: Amir Khajepour, Zhihong Yin, Dongpu Cao, Babak Ebrahimi
  • Patent number: 7975994
    Abstract: A displacement element includes a first piston, a second piston, a cylindrical housing filled with a fluid under pressure, a piston rod, and a spring. Each of the pistons is adapted to the respective internal diameter of its section and divides the respective section into two pressure chambers. The first piston is arranged at one end of the piston rod, and both pistons each include means for damping the movement of the piston rod respectively in one direction. The second piston is arranged on the side of the first piston facing away from the piston rod and is capable of displacement by means of the first piston in a direction facing away from the open end. The spring is arranged on the side of the second piston facing away from the first piston, and supported by the second piston and the housing.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: July 12, 2011
    Assignee: Stabilus GmbH
    Inventors: Frank Born, Rainer Massmann, Rolf Mintgen, Dirk Rennecke, Wilhelm Schwab
  • Patent number: 7967119
    Abstract: The invention provides a telescopic member that includes a cylinder in which a rod carrying a piston is mounted to slide telescopically, the telescopic member including internal abutment mechanisms that are overridable over a predetermined force when the rod comes into abutment inside the cylinder in the shortening direction. The internal abutment mechanisms include an abutment piece extending in an open bore within the rod and projecting therefrom, the abutment piece being held to the rod via a pin.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: June 28, 2011
    Assignee: Messier-Dowty S.A.
    Inventors: Andre Lahargou, Marc Brune
  • Patent number: 7963509
    Abstract: A gas spring capable of having long and short travel modes is described. The gas spring uses liquid in combination with pressurized air to affect the travel length. Unlike conventional gas springs, the gas spring according to the invention may have its travel reduced more than, for example, by 50%.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: June 21, 2011
    Assignee: Fox Factory, Inc.
    Inventor: Robert C. Fox
  • Patent number: 7950632
    Abstract: A damping device, which is provided between a handle and pole tube of a sport pole such as a ski pole, combines the action of a helical compression spring (17) with that of a gas compression spring, whereby a rod-shaped body (5) can be displaced inside a tube (3). An elastic insert (13), which is subjected to the action of the helical compression spring (17), is provided at the end of the rod-shaped body (5). The rod-shaped body (5) is pressed into the tube (3), e.g. when the pole is placed against the ground, and the insert (13) deforms and tightly abuts against the tube (3) from the inside whereby forming a gas compression spring. The damping action is progressively increased inside the tube (3) by the friction of the deformable insert (13).
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: May 31, 2011
    Assignee: Komperdell Sportartikel Gesellschaft m.b.H.
    Inventor: Thomas Roiser
  • Patent number: 7938467
    Abstract: A load weighting control apparatus that suppresses deterioration of a controlled object due to impacts or the like during control, and for which energy usage costs required for control are markedly reduced, and that has a simple structure and therefore inexpensive manufacturing costs and running costs. The apparatus includes a main vacuum cylinder provided with a cylinder tube, end walls, an air vent that passes through one end wall, a valve that is provided in the air vent and serves to open/tightly close the atmosphere inside of the cylinder tube to the outside, a piston that slides back and forth within the cylinder tube, and a piston rod that is linked to the piston and passes through the other end wall and an auxiliary vacuum cylinder that includes a slacking portion where a piston rod produces slackness in the main vacuum cylinder.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: May 10, 2011
    Inventor: Hiroshi Kasuga
  • Patent number: 7934709
    Abstract: Provided is a viscous fluid-sealed damper which helps to achieve an increase in degree of freedom in terms of the selection of the material of a sealing container, which can be produced with high production efficiency, and which helps to avoid leakage of the viscous fluid. A lid member is fixed to a container main body while compressing and holding a flange portion between a sealing member and the lid member, so an opening end of the container main body can be sealed with the lid member without having to effect fixation through fusion-bonding as in the prior art, and the degree of freedom in terms of material selection can be increased. Further, if the container main body is formed of a butyl rubber, the container main body can be fixed to the lid member without using any adhesive, so it is possible to achieve a reduction in production time and in cost. Further, it is possible to avoid leakage of the viscous fluid due to defective adhesion.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: May 3, 2011
    Assignee: Polymatech Co., Ltd.
    Inventors: Rie Miyakosawa, Junji Ohki
  • Publication number: 20100307329
    Abstract: A shock absorber system for use with a vehicle having a shield to reduce the effects of a shock event.
    Type: Application
    Filed: June 4, 2010
    Publication date: December 9, 2010
    Inventors: Robert Kaswen, David M. Haugen
  • Publication number: 20100258986
    Abstract: A damping device for movable furniture parts includes a base, a movable member defining a path, a housing movably connected to the path and including a space and an opening which communicates with the space, a damper located in the space and including a cylinder and a piston rod which has one end inserted into the cylinder and the other end of the piston rod extends from the cylinder, a first threaded member connected to the cylinder including, a second threaded member connected to the first threaded member and located corresponding to the opening of the housing, an adjustment member movably connected between the base and the movable member. When rotating the second threaded member, a distance between the housing and the movable member is adjusted. When the adjustment member is adjusted, the relative distance between the base and the movable member is adjusted.
    Type: Application
    Filed: April 8, 2010
    Publication date: October 14, 2010
    Applicant: KING SLIDE WORKS CO., LTD.
    Inventors: KEN-CHING CHEN, HSIU-CHIANG LIANG, TING-TSAI HUANG, CHUN-CHIANG WANG
  • Publication number: 20100252373
    Abstract: A positionable support device employs a motion restriction device retrofitted to an existing spring cylinder to adjust the amount of force exerted. In one embodiment, split ring is pressed against an actuating shaft of the spring cylinder with adjustable force. The force on the split ring causes frictional resistance to the motion of the shaft thereby reducing the force applied. This is useful in spring-loaded positioners which allow the object to be placed, and remain in a selected position. The spring cylinder may be gas-charged or spring-loaded support. Various types of friction adjustment units may be employed to result in a positionable support device which holds an object in a desired position.
    Type: Application
    Filed: April 2, 2009
    Publication date: October 7, 2010
    Applicant: INNOVATIVE OFFICE PRODUCTS, INC.
    Inventors: Odd N. Oddsen, JR., Howard M. Williams, JR.