Means Includes Element Interfitting Between Working Member And Fixed Part Patents (Class 92/23)
  • Patent number: 10821457
    Abstract: Manual operated pump for the delivery of a fluid, equipped with a main part comprising a dispenser coupled with a hollow stem through which the fluid is dispensed, and a ring nut for fastening the pump to a container for containing fluid to be dispensed, the pump having a safety element, configured to be snap-fitted onto a cylindrical part of the dispenser through an opening therein so as to be interposed between at least one surface of the dispenser and the ring nut, thereby preventing the dispenser from moving closer to the ring nut in the event of an impact during transportation, the safety element featuring ribs parallel to the axis of the cylindrical part, and the main part of the pump comprises projections for cooperating with the ribs to limit or prevent rotation of the safety element relative to the main part.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: November 3, 2020
    Assignee: COSTER TECHNOLOGIES SPECIALI S.P.A.
    Inventors: Alfeo Tecchiolli, Giancarlo Fontanari
  • Patent number: 10774970
    Abstract: A mechanical lock unit with a shaft lock assembly and method of achieving a self-lock mode for, e.g., hydraulically activated isolation plug module. The shaft lock assembly includes a teeth-form ring that surrounds a shaft. The teeth-form ring defines a plurality of teeth. A teeth-form split gripper assembly is positioned to surround the teeth-form ring. The teeth-form split gripper assembly has at least a first teeth-form split gripper and a second teeth-form split gripper with a spring therebetween for biasing the first teeth-form split gripper away from said second teeth-form split gripper. The first teeth-form split gripper and the second teeth form split gripper having an inner surface that defines a plurality of teeth for cooperative engagement with the plurality of teeth of the teeth-form ring.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: September 15, 2020
    Assignee: TDW Delaware, Inc.
    Inventors: Khanh Van Nguyen, Hallgeir Foss Alsvik
  • Patent number: 10288090
    Abstract: The subject matter of this specification can be embodied in, among other things, a locking apparatus for a rotary actuator includes an outer housing comprising a cylindrical interior surface having a recess. A rotor is disposed within the outer housing. The rotor has an interior cavity and a port extending radially from the interior cavity to the cylindrical exterior surface. A piston is disposed for reciprocal movement within the interior cavity between a first position and a second position and includes a first portion having a first thickness, a second portion having a second thickness larger than the first thickness. A key is disposed for radially reciprocal movement within the port and includes a radially proximal end and a radially distal end. The radially proximal end contacts the first portion and the radially distal end does not extend into the recess when the piston is in the first position.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: May 14, 2019
    Assignee: Woodward, Inc.
    Inventor: Joseph Thomas Kopecek
  • Patent number: 10208771
    Abstract: A two-stage, fully self-retracting, telescopic fluid actuator suitable for high speed ejection applications comprises a detent 38, 64, 26, which locks a cylinder 6 in an extended position for extension of a piston 3 therefrom. The detent is released by retraction of the piston into the cylinder again, e.g. under spring bias, so that the actuator is fully self-retracting. A locking ball 38 of the detent also serves to latch the piston and cylinder to each other for the first stage of the actuator extension. In an alternative embodiment, cam means (80, 117 FIGS. 10, 11 and 13) and plungers (90, FIGS. 10, 12, 13 and 15) perform the detent and latching functions.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: February 19, 2019
    Assignee: EDO MBM Technology Limited
    Inventor: James Lewendon
  • Patent number: 9751204
    Abstract: The invention is based on a hand-held power tool device equipped with a locking device. The locking device is provided for locking an output device and has at least one locking element for supporting at least one radial clamping force. According to a proposed embodiment, the locking element is provided to fasten and/or axially secure at least one component.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: September 5, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Jens Blum, Heiko Roehm, Tobias Herr
  • Patent number: 9038528
    Abstract: A device for the pulsed release of an amount (3) of fluid that is stored in a storage housing (2) includes a piston (5) biased by a first spring (4) and movable within the storage housing (2) to dispense the fluid by the spring bias, when triggered by an actuator (6) to release a lock holding the piston in place (7). The lock (7) has individual catches (8) keeping the piston (5) in its pretensioned position and, when actuated by the actuator (6), releases the piston (5).
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: May 26, 2015
    Assignee: HYDAC TECHNOLOGY GMBH
    Inventors: Norbert Weber, Norbert Lange
  • Patent number: 9021936
    Abstract: An actuator includes a cylinder and a piston disposed in the cylinder. The piston has a head and a rod. The actuator further includes a collapsible locking member disposed in the head of the piston, and a gas-filled capsule disposed in the cylinder. The gas-filled capsule is in an expanded position when fluid in the cylinder is below a threshold pressure, and the gas-filled capsule is in a collapsed position when fluid in the cylinder is above the threshold pressure. The actuator also includes a lock piston operably connected to the gas-filled capsule. The lock piston engages the collapsible locking member and biases the collapsible locking member radially outward to a locked position when the gas-filled capsule is in the expanded position.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: May 5, 2015
    Assignee: Eaton Corporation
    Inventor: Daniel Henry Roberts
  • Patent number: 8960070
    Abstract: The invention discloses a suction drainage device that comprises: a cylinder sleeve where the inside of the cylinder sleeve is provided with a step hole and the wall of the cylinder sleeve has a waste-discharging outlet; a cylinder liner with a bottom that includes a shaft hole and where the wall of the cylinder liner is provided with a flange; a piston with a piston rod; a cylinder sleeve cover with a step hole along the axis, and the body is also provided with a hanging hole; a cylinder liner lock that clutches the piston rod; a shifting fork assembly that is fixed inside the step hole of the cylinder sleeve cover; a ring shaped cylindrical liner lock seat that includes a slope and a pivot pin; an annular end cover that contains a through hole in its center, wherein: the cylinder liner is located inside the cylinder sleeve, the piston is located inside the cylinder liner; the cylinder sleeve cover is connected to the cylinder sleeve along the axis; the cylinder liner lock seat is located in between the cyli
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: February 24, 2015
    Inventor: Guoqing Gu
  • Patent number: 8955424
    Abstract: A linear actuator includes a cylinder main body. With respect to the cylinder main body, a slide table is disposed for reciprocal displacement through a guide mechanism, which is disposed on the cylinder main body. A stopper mechanism having a stopper bolt is disposed on one end of the slide table centrally in a widthwise direction perpendicular to the longitudinal direction of the slide table. In addition, when the slide table is displaced along the cylinder main body, an end of the stopper bolt comes into abutment with an end of a cover of the guide mechanism, whereupon the slide table becomes engaged therewith and movement of the slide table is stopped.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 17, 2015
    Assignee: SMC Kabushiki Kaisha
    Inventors: Koichiro Ishibashi, Seiji Takanashi, Motohiro Sato, Jiro Mandokoro, Koji Hara, Toshio Sato
  • Patent number: 8932176
    Abstract: A method of locking a linear output member in a retracted position within a linear actuator, where the linear output member is capable of axial motion within a housing of the linear actuator, includes rotating a generally tubular rotor disposed within a rotary lock assembly of the actuator to a first rotor position, and shifting a lock capable of radial displacement within the rotary lock assembly based on rotating the rotor to the first position. The lock engages a radial groove of the linear output member when the linear output member is in a retracted position. The rotary lock assembly is constrained from axial motion. The radial groove of the linear output member includes an axially angled, substantially planar surface. The lock is configured to include an axially angled surface shaped complimentary to the axially angled, substantially planar surface of the radial groove.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: January 13, 2015
    Assignee: Woodward HRT, Inc.
    Inventor: Joseph Thomas Kopecek
  • Publication number: 20140352289
    Abstract: A fluid operated actuator (103) is provided that includes an actuator housing (104) and a piston assembly (109) including a piston (106) and a piston rod (108) movable within the actuator housing (104). The fluid operated actuator (103) further includes a plurality of detents (210) unified with the piston rod (108) and a lock (209) configured to move between a first and a second position. The lock engages the plurality of detents (210) when the lock (209) is in the first position or the second position to prevent the piston assembly (109) from moving with respect to the actuator housing (104). The lock further disengages from the plurality of detents (210) when the lock (209) is between the first and second positions to allow the piston assembly (109) to move with respect to the actuator housing (104).
    Type: Application
    Filed: January 10, 2013
    Publication date: December 4, 2014
    Inventors: Ralph Riedel, Wolfgang van den Berg, Hans-Peter Kuhlmann
  • Publication number: 20140208935
    Abstract: A locking mechanism for locking an actuator piston within an actuator cylinder housing is disclosed. The locking mechanism comprises a locking pin that is moveable between extended and retracted positions. The locking pin can be moved using a controller, such as a hydraulic controller, for example. In the extended position the locking pin engages the actuator piston thereby locking the actuator piston in a specific position. The locking mechanism includes a mechanical bias (such as a spring or other mechanical system) that biases the locking pin towards an extended position to lock the actuator piston when counter-pressure on the locking pin is lower than the pressure provided by the mechanical bias. The locking pin can be hydraulically operated so that hydraulic pressure that forces the actuator piston to retract also exerts force on the locking pin to move it from a locked position to an unlocked position.
    Type: Application
    Filed: January 30, 2013
    Publication date: July 31, 2014
    Applicant: MESSIER-DOWTY INC.
    Inventors: Dan Amariei Voiculescu, Ernest Leung
  • Patent number: 8746661
    Abstract: The invention relates to a hydro-pneumatic piston accumulator (1), particularly for vehicle suspension systems, consisting of an accumulator housing (2) and a separating piston (6), which is disposed free-floating inside the accumulator housing in a displaceable manner in the direction of the movement axis (4). The separating piston separates an accumulator area (8) for a hydraulic medium from a pressure area (10) that is filled or is to be filled with a compressible medium, and is guided with an interior guide opening (30) on an elongated guide element (32), which is axially fixed within the accumulator housing (2).
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: June 10, 2014
    Assignee: Hemscheidt Fahrwerktechnik GmbH & Co. KG
    Inventor: Walter Runkel
  • Patent number: 8739682
    Abstract: A pneumatic actuator is provided for an active hood and includes a cylinder and a piston, which is movable in the cylinder between a lower terminal position, in which the volume of a chamber delimited by piston and cylinder, which may be impinged using compressed gas, is minimal, and an upper terminal position, in which the volume of the chamber is maximal. The piston is lockable in the lower terminal position by a detent body engaging in first recesses of the cylinder and the piston. A slider is displaceable by impingement using the compressed gas out of an idle position, in which it fixes the detent body in the first recesses, into a triggering position, in which a second recess of the slider overlaps with one of the first recesses and is capable, together with a single one of the first recesses of accommodating the detent body.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: June 3, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Bernd Dreyer, Joachim Schaefer, Erik Wiesinger
  • Patent number: 8714074
    Abstract: A length-adjustable piston cylinder unit comprises a casing; a guide and sealing unit; a piston rod; a piston; a first interior portion; a second interior portion which faces away from the first interior portion; an adjustment valve; a guide sleeve which is arranged for displacement on the casing, the guide sleeve being secured to the piston rod at a sleeve end and comprising at least one latch opening which is spaced from the sleeve end along the central longitudinal axis; and a latch sleeve arranged on the guide sleeve, the latch sleeve comprising a latch protrusion for engagement into the latch opening, with the latch protrusion of the latch sleeve being arrangeMc in the latch opening of the guide sleeve for arranging the piston cylinder unit in a secured position so that the displaccability of the guide sleeve connected with the piston rod relative to the casing is blocked.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: May 6, 2014
    Assignee: Suspa GmbH
    Inventors: Christian Eiletz, Gerhard Wunderling
  • Patent number: 8715132
    Abstract: A linear actuator is disclosed. The linear actuator includes a housing, a linear output member, and a rotary lock assembly. The linear output member includes a radial groove and is axially movable from a retracted position within the housing. The rotary lock assembly is constrained from axial motion within the housing and includes a rotor and a lock. The rotor is capable of rotation from a first to a second position. When the linear output member is in the retracted position, the rotor surrounds the radial groove. When the rotor rotates to the first position, the lock engages the radial groove and prevents axial motion of the output member from the retracted position.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: May 6, 2014
    Assignee: Woodward HRT, Inc.
    Inventor: Joseph Thomas Kopecek
  • Patent number: 8621978
    Abstract: Actuator (V) for opening an aircraft nacelle cowl (7), comprising a dead travel device (19), characterized in that it comprises means (42a, 42b, 43) for blocking the dead travel device (19) when this actuator (V) is extended.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: January 7, 2014
    Assignee: Aircelle
    Inventors: Pierre Moradell-Casellas, Stephane Lederle
  • Patent number: 8316758
    Abstract: A pneumatic actuator is provided for an active hood and includes, but is not limited to a cylinder and a piston, which is movable in the cylinder between a lower terminal position, in which the volume of a chamber delimited by piston and cylinder, which may be impinged using compressed gas, is minimal, and an upper terminal position, in which the volume of the chamber is maximal. The piston is lockable in the lower terminal position by a detent body engaging in first recesses of the cylinder and the piston. A slider is displaceable by impingement using the compressed gas out of an idle position, in which it fixes the detent body in the first recesses, into a triggering position, in which a second recess of the slider overlaps with one of the first recesses and is capable, together with a single one of the first recesses of accommodating the detent body.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: November 27, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Bernd Dreyer, Joachim Schäfer, Erik Wiesinger
  • Patent number: 8250965
    Abstract: A jack system provided with a cylinder provided with a first stopper. The jack system also includes: a body hinged about an end of the piston, the body including a second stopper and being able to occupy a first angular position authorizing the extraction of the piston, as well as a second angular position uniquely allowed when the piston occupies a position such that the second stopper is located beyond the first stopper in an extraction position, the body occupying the second position providing the facing of the first and second stoppers; and an electromagnetic attraction/repulsion device designed to provide the displacement of the body from the first position to the second position, and inversely.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: August 28, 2012
    Assignee: Airbus Operations SAS
    Inventor: Jaouen Ponsart
  • Publication number: 20120085227
    Abstract: An accumulator assembly includes a pressure canister and a latching assembly. The latching assembly includes a solenoid, an actuator, and a piston. The piston is slidingly engaged within an interior space the canister. The piston divides the interior space of the canister into an air chamber and a fluid filled chamber. The fluid filled chamber is in fluid communication with a fluid supply line. A biasing member is located within the air filled chamber and exerts a biasing force on the piston. The solenoid induces a magnetic field used to actuate the actuator, where the actuator selectively engages with a groove located along an outer surface of the piston. When the actuator disengages from the groove, the biasing force exerted by the biasing member urges the piston to slide within the canister, causing fluid to discharge from the fluid chamber and into the supply line.
    Type: Application
    Filed: July 18, 2011
    Publication date: April 12, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Carlos E. Marin, Leonid Basin
  • Publication number: 20120067204
    Abstract: A fluid displacement device, particularly for use of the device to pressurize balloon catheters, or the like. The device includes a plunger which is displaceable through a housing, and an actuating mechanism which engages the plunger. The actuating mechanism includes a nut member that is biased into engagement with a threaded portion of the plunger. The device has a press-to-release feature wherein the plunger is instantly releaseable by simply depressing a control surface to overcome a restorative spring force. Subsequently, the plunger can be translated using macro movements (i.e., by pushing or pulling the plunger).
    Type: Application
    Filed: October 31, 2011
    Publication date: March 22, 2012
    Applicant: ATRION MEDICAL PRODUCTS, INC.
    Inventors: Rowland W. Kanner, Richard M. Davis, Brian A. Roberts
  • Patent number: 7908961
    Abstract: The invention relates to a locking device for linear actuators, in particular for fluid-actuated adjusting devices, with a piston rod mounted in an axially displaceable manner relative to a receiving device. The object of the invention is to provide a locking device for linear actuators, with which a secure locking is possible over the entire travel path of the linear actuators. This is attained in that the piston rod has a hollow space extending in the axial direction, in which form-fitting devices are arranged distributed in the axial direction, that form-fitting elements corresponding to the form-fitting devices are arranged in the piston rod in a radially displaceable manner, which elements are mounted in an axially stationary manner relative to the receiving device, and that an actuating device that displaces the form-fitting elements radially is assigned to the form-fitting elements.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: March 22, 2011
    Assignee: Duetsches Zentrum Fuer Luft-und Raumfahrt E.V.
    Inventors: Milan Kamenz, Gunther Alvermann
  • Patent number: 7857087
    Abstract: An actuator AE1 includes a lock mechanism R1 configured to fill a gas G generated by operating a gas generator 35 at inside of a cylinder 22 and moving forward a piston 38 along with a support rod 40 for restricting a rearward movement of the support rod moved forward. The support rod 40 is arranged to be able to absorb a kinetic energy of a protection object person and capable of being plastically deformed when the protection object person is received by a receiving member after having been moved forward. A lock mechanism R1 is constituted by a diameter enlarging deformed portion 42 arranged at a piston and a locking stepped portion 24 capable of restricting the rearward movement of the piston.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: December 28, 2010
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Hirokazu Matsuura, Naoki Yamano, Hideo Higashi, Kazuhito Sugimoto, Hajime Kitte, Ichizo Shiga, Shigeyuki Suzuki, Takeki Hayashi
  • Publication number: 20090194641
    Abstract: A locking mechanism, which permits fixation to a piston rod of a linear actuator relatively to a cylinder of the actuator, as well as a linear actuator equipped with such a locking mechanism as well as to an aircraft with at least one linear activator that is equipped with the locking mechanism. The locking mechanism includes a plurality of first positive locking elements which are arranged lengthwise with the outside circumference of the cylinder and in certain distances to one another and at least one second positive locking element, which is moved together with the piston rod upon activation of the linear actuator and thus passes a segment of the cylinder. The at least one second positive locking element is positively engageable with one of the plurality of first locking elements at discrete positions of the cylinder lengthwise, by which the piston rod is fixed relatively to the cylinder.
    Type: Application
    Filed: August 31, 2006
    Publication date: August 6, 2009
    Inventor: Gunnar Haase
  • Patent number: 7547199
    Abstract: A pumping system and related methods involving an outer chamber and an inner chamber extending between two endplates, wherein the circumference of the inner chamber may be adjusted via a plurality of ribs and linear motors.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: June 16, 2009
    Inventors: Anthony C. Ross, Russel Ross
  • Publication number: 20090095151
    Abstract: A pneumatic actuator is provided for an active bonnet. The pneumatic actuator includes, but is not limited to a cylinder and a piston transferable from a rest position to an extended position and lockable in its rest position. The piston, in its rest position, is held pre-stressed by a spring element in the direction of the extended state.
    Type: Application
    Filed: February 26, 2007
    Publication date: April 16, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Joachim Schafer, Volker Scheuch, Werner Schmidt, Martin Zilg
  • Publication number: 20090020005
    Abstract: The invention pertains to a piston-cylinder unit for a hinged lid, especially a motor vehicle hinged lid, with a closed first end, a cylinder, a piston installed in the cylinder with freedom to slide back and forth, the piston dividing the cylinder into a working chamber remote from the first end and a second working near the first end; and a piston rod, which is attached to one side of the piston, projects through the first working chamber, and passes out of the cylinder concentrically to the central longitudinal axis of the cylinder through a guide and sealing device at the second end opposite the first end, where a first locking element is provided on the piston rod, and a second locking element is provided on the cylinder to establish a mechanical interlock, and where one of the locking elements comprises a sleeve, which cooperates with the other locking element to establish an interlock.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 22, 2009
    Applicant: Stabilus GmbH
    Inventors: Marian Bochen, Rainer Massmann, Mihai Augustin Vidrean
  • Publication number: 20080190283
    Abstract: A system for mounting or/demounting a cylinder unit (1) in a vehicle. A piston rod (5) provided with a piston (4) arranged in the bore (6) of the cylinder unit (1) which piston (4) and piston rod (5) are displaceably arranged in the axial direction of the bore (6) of the cylinder unit. The bore (6) has an opening (13) provided for an end portion of the piston rod (5) to protrude out from the bore, and the piston (4) separates the cylinder unit into a first chamber (7) and a second chamber (8) . At least a first passage (9) is provided for communication of fluid into or out of the first chamber (7) . In an initial operating position of the cylinder unit, the piston (4) and the piston rod (5) is positioned with the end portion of the piston (5) protruding out from the mouth of the bore (6).
    Type: Application
    Filed: August 7, 2006
    Publication date: August 14, 2008
    Applicant: KONGSBERG AUTOMOTIVE AS
    Inventors: Morten Berger Gunnerud, Lucien Lenerand
  • Patent number: 7363848
    Abstract: The invention relates to a rotating or pivoting device (110) comprising a housing (12), at least one working piston (14) which is mounted in the housing and subjected to a pressure medium, and a pivoting part (20) which is rotatably mounted in the housing and is rotatably driven by the working piston by means of a rotating coupling mechanism, the working piston being mounted in the housing in such a way that it can be displaced in a housing-side cylinder, The inventive rotating or pivoting device also comprises an abutment part (114) that limits the stroke of the working cylinder in at least two positions and can be locked at least in its axially inner intermediate position.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: April 29, 2008
    Assignee: Schunk GmbH & Co. KG Fabrik fuer Spann-und Greifwerkzeuge
    Inventor: Andreas Hoch
  • Patent number: 7343846
    Abstract: A hydraulic actuator is provided for supporting a load. The actuator includes a cylinder, a lower end closed by a base, and an annular side wall connected between the base and the upper wall. A piston is disposed partially within the cylinder, and includes a rod extending through the upper end of the cylinder, and a piston head that defines a hydraulic chamber with the base. A cylinder chamber is disposed between the base and the piston head and communicates with a fluid source and a fluid return to correspondingly extend and retract the piston. A support member is connected to the cylinder wall, and can be raised to support a tilt saddle member between the piston rod and the load after the piston has been extended.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: March 18, 2008
    Assignee: Actuant Corporation
    Inventors: Frantz D. Stanford, Jesus Salvador Gonzalez Sanz, Bruce Edwin Knuth
  • Patent number: 7287376
    Abstract: A hydraulic cylinder comprises a piston assembly with a piston and a piston rod, a cylinder housing with a housing bottom, a pressure chamber in the cylinder housing delimited by the piston and housing bottom, a spring element which prestresses the piston assembly away from the housing bottom, and a fixing element which fixes the piston assembly in a predefined stroke position relative to the cylinder housing prior to first actuation of the hydraulic cylinder and is designed to release the piston assembly relative to the cylinder housing upon first actuation of the hydraulic cylinder. The spring element is arranged on the side of the piston which is remote from the pressure chamber, whereas the fixing element is provided in the pressure chamber at the housing bottom and co-operates with a mating element on the piston to releasably fix the piston assembly relative to the cylinder housing.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: October 30, 2007
    Assignee: FTE automotive GmbH
    Inventors: Egid Macht, Hubert Derra, Jürgen Ryba, Dieter Grimmer
  • Patent number: 7216752
    Abstract: A hydraulic cylinder (10) is disclosed comprising a cylinder housing (12) with a housing bore (14), a piston (16) held longitudinally displaceably in the housing bore, a piston rod (18) allocated to the piston and a fixing element (20) which before a first cylinder operation is detachably connected with the piston rod and fixes this in a predetermined stroke position in relation to the cylinder housing and is designed to release the piston rod in relation to the cylinder housing on the first cylinder operation. According to the invention, before the first cylinder operation the fixing element in a first position is detachably connected with a center area (22) of the piston rod and on cylinder first operation can be moved from the first position to a second position area (24), in particular stationary in relation to the piston rod, in which it can be fixed for further cylinder operations.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: May 15, 2007
    Assignee: FTE automotive GmbH
    Inventors: Hubert Derra, Dieter Grimmer, Wolfgang Schor, Robert Müller
  • Patent number: 7044047
    Abstract: A series of thin shims with concave profiles matching the cylinder rod is supported from the cylinder. A carrier mechanism attached to either the rod end or cylinder barrel supports a plurality of shims that can be pivoted between storage positions and stop positions. A pivoting and spring loaded latching arm works in conjunction with notches on the shim profile to lock individual shims in either the working or the storage position. Multiple shim stack operating ranges are provided by insertion of thicker shims between the main shim pack and the mating part. The mating part can be a cylinder rod end or cylinder rod guide, depending upon the shim pack carrier mechanism.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: May 16, 2006
    Assignee: Deere & Company
    Inventors: Robert Edwin Bennett, William Douglas Graham, Kevin William Hoehn
  • Patent number: 6971351
    Abstract: A region including an engaging hole is given surface treatment such as partial quench hardening by induction hardening for improving surface hardness of the region. The partial quench hardening by induction hardening provides the region with satisfactory mechanical strength or surface hardness enough for resisting deformation of the engaging hole and wear-out of an edge of opening of the engaging hole caused by putting in and out of the lock pin.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: December 6, 2005
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroyuki Kinugawa, Makoto Yamauchi
  • Patent number: 6945156
    Abstract: The invention relates to a device for displacing and locking movable switch parts (1), comprising a hydraulic piston, which is formed by a rod (6) and cooperates, via coupling or locking members (8), with an axially displaceable sleeve (5) intended to receive the radially displaceable coupling or locking members (8), The displaceable sleeve (5) is coupled with the movable switch parts (1) and an externally arranged tube (4), at least partly overlapping the sleeve (5) and the rod (6). A hydraulic duct (11) is connected to the externally arranged tube (4), on a front face of the sleeve (5), facing away from the coupling site for the movable switch parts (1).
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: September 20, 2005
    Assignees: VAE Eisenbahnsyteme GmbH, VAE GmbH
    Inventors: Karl Schnedl, Herbert Achleitner
  • Patent number: 6923509
    Abstract: A remotely activated electro mechanical device is mounted in the dual chamber brake system of a vehicle or trailer. The device includes a solenoid valve and a receiver decoder which controls the valve in response to a coded signal ideally available only to law enforcement to vent pressure in the emergency chamber of a dual chamber brake system to automatically apply the brakes thereby bringing a moving vehicle to a stop. The device is also responsive to a second, different coded signal, available only to authorized users to vent pressure in the emergency chamber and to lock the brakes by preventing pressurized air from being supplied to the dual chamber brake system of a stopped or parked vehicle. The device is also responsive to coded signals which reverse the above-noted actions.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: August 2, 2005
    Assignee: Cargo Safe, Inc.
    Inventor: Burton Barnett
  • Patent number: 6782799
    Abstract: A double-acting hydraulic actuator with an axial locking device has a cylinder chamber defined by two coaxial cylindrical walls of different diameters interconnected by a frustoconical wall. A guide piston sliding in the smaller-diameter cylindrical wall is fixed to an end of an actuator rod. The actuator rod has an annular protuberance of diameter equal to the diameter of the cylindrical wall. An annular stepped piston providing sealing between the two cylinder chambers is slidably mounted in a middle portion of the actuator rod to slide between the piston and the annular protuberance. When the actuator is extended, a narrowed end of the annular piston bears against conical surfaces of two half-rings and urges them outwards. When the half-rings are pushed outwards and the narrowed end of the annular piston becomes interposed between them and the middle portion of the actuator rod.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: August 31, 2004
    Assignee: Hydraulique Production Systems
    Inventor: Pierre Vincent
  • Patent number: 6772672
    Abstract: An actuator holding structure for a vehicle has: a first retainer attached to the housing; a second retainer attached to the piston rod; and, a plurality of protruded engaging portions formed on the outer peripheral surface of the housing, wherein the piston rod is held in the retracted condition while the first retainer and the second retainer are engaging together, and when the first retainer is released from engaging with the second retainer, and the piston rod is allowed to be extended and retracted, wherein the first retainer includes a first lateral belt for peripherally holding a part of the housing by engaging with the protruded engaging portions while the first retainer and the second retainer are engaging together, and a second lateral belt for peripherally holding the other part of the housing opposite to the first lateral belt so as to be latched and unlatched.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: August 10, 2004
    Assignees: Nissin Kogyo Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kazuhiro Kosugi, Shinji Oka, Toru Ishino
  • Patent number: 6698114
    Abstract: A lift arm assembly for a small or “mini” loader is pivotally mounted onto a self propelled frame for movement between a raised and a lowered position. In the raised position, a support strut is provided that fits over an extended rod of the lift arm operating cylinder and will prevent the lift arm assembly from lowering. The support strut is stored in a front tubular cross member of the lift arm assembly. Additionally, the front cross member supports an upright strut that acts as a back stop for material in a bucket, by projecting upwardly beyond the bucket top so that if an object in the bucket tends to roll rearwardly, if the bucket is not leveled, it will be intercepted by the upwardly projecting portion of the back stop and deflected laterally.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: March 2, 2004
    Assignee: Clark Equipment Company
    Inventors: Mark F. Bares, James H. Page
  • Patent number: 6691606
    Abstract: The invention proposes a hydraulic device of the kind including a cylinder in which a piston is mounted for sliding in leaktight fashion in the body of the cylinder so as to delimit at least one hydraulic chamber intended to be linked to a hydraulic circuit, and is linked to the front extremity of an actuating rod which projects axially rearwardly outside the cylinder body and on which an actuating force can be applied in order to cause forward displacement of the piston counter to a return force applied to the piston. The device includes a temporary end stop which limits the forward displacement of the piston and which intervenes until the piston is first actuated by means of the actuating rod. The invention is applicable to a hydraulic cylinder for the control of motor-vehicle equipment.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: February 17, 2004
    Assignee: Valeo
    Inventor: Paolo Perata
  • Patent number: 6640688
    Abstract: An actuator assembly comprising at least one prime mover, a shaft having a first end and a second end, the shaft being operatively connected to the prime mover for reciprocal movement, a frame, the shaft being reciprocably movable in the frame, and linkage attached to the frame and operatively connected to the shaft, the linkage being movable between a first position and a second position in response to reciprocal movement of the shaft and a selectively engageable stroke-limiting assembly operatively connected to the shaft for controlling movement of the shaft, either by preventing any movement of the shaft or limiting its stroke a predetermined amount.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: November 4, 2003
    Assignee: Tyco Flow Control, Inc.
    Inventor: James D. Harper
  • Patent number: 6612221
    Abstract: A pressure medium activated piston-cylinder device comprises a cylinder with two end walls both having pressure medium communication ports, a piston movably guided in the cylinder and connected to a piston rod which extends out of the cylinder through a sealed-off passageway in a first one of the end walls, and a piston rod locking device located in the passageway and including a clamping element axially locked to the first end wall, and an activating member which is continuously spring biased toward a clamping element activating position and shiftable by pressure medium toward a release position, against the spring bias force, wherein a manually operable release mechanism comprises a tubular thrust element movable in the first end wall between a rest position and an activating member releasing position, and a maneuver spindle having a cam surface for co-operation with a cam surface on the thrust element for moving the thrust element between its rest position and the activating member releasing position as th
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: September 2, 2003
    Assignee: Parker Hannifin AB
    Inventor: Folke Lennart Röllgårdh
  • Patent number: 6544005
    Abstract: A diaphragm for a diaphragm pump is in the form of a vehicle tire. The vehicular tire has a first mounting face, a second mounting face and a circumferential tread portion positioned between first mounting face and the second mounting face. A first sealing disk is secured to the first mounting face of the tire. A second sealing disk is secured to the second mounting face of the tire. An inlet valve positioned on either the first sealing disk or the second sealing disk. An outlet valve is positioned on either the first sealing disk or the second sealing disk.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: April 8, 2003
    Assignee: Wade Metal Products Limited
    Inventor: Duncan Wade
  • Patent number: 6520067
    Abstract: A device for locking a piston rod of a hydraulic piston and cylinder assembly in an extended condition. The locking device is placed in interposed relation to a hydraulic cylinder and an opposing bearing point to prevent retraction of the piston rod. The device has a split sleeve configuration to facilitate mounting the locking device in encircling relating to the piston rod including opposed longitudinally extending edges that are locked to one another via a locking means. The locking means of the device is partially enclosed by a lock protecting housing to protect the locking device from being removed by unauthorized persons. The device is durable, easy to install and remove, and adaptable to a variety of hydraulic piston and cylinder assemblies.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: February 18, 2003
    Inventors: Michael H. Hunt, Preston E. Smith
  • Patent number: 6508161
    Abstract: A simplified piston pump which is featured in that the number of components for the assembling thereof can be minimized, that the assembling thereof can be simplified, and low in manufacturing cost thereof. This simplified piston pump comprises; a cylinder having at least one protrusion formed on the inner surface of a proximal end portion of said cylinder for preventing the piston from slipping out; and a piston shaft having a structure wherein the outer surface of the piston shaft is contacted with the inner surface of the cylinder to prevent the decentering of the piston shaft and wherein a groove is formed thereon to ensure the reciprocative movement of the piston.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: January 21, 2003
    Assignee: Suzuki Latex Industry Co., Ltd.
    Inventors: Takayuki Suzuki, Teruo Takamura
  • Patent number: 6497560
    Abstract: A high-volume low pressure hand operated air pump comprised of a tube body with a plunger shaft inserted into one end thereof and a check valve at the other end thereof with a floating seal secured to the internal end of the plunger shaft comprised of a captured double sided annular disk having a closed cell foam plastic seal on one side thereof and a plastic stiffener of the same plastic material integrated thereto for supporting the foam sealing side thereof
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: December 24, 2002
    Inventor: Robert T. Carlson
  • Patent number: 6474215
    Abstract: The invention concerns an actuator (21) comprising a pre-stroke rod (29) which can be fixed to the tool body, for example soldering pliers. Thus by pressurising the pre-stroke chamber (27) the working rod (34) for closing the pliers can be brought into an intermediate small opening position, the working piston (31) and the amplifying pistons (36 and 37) remaining retracted in the actuator. Since the rod (29) can then be locked relative to the actuator body (21), pressurisation of the working chamber (32) and the amplifying chambers (38 and 40) will then cause the working rod to be extracted (34) and the soldering pliers to be closed without any recoil from the actuator body.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: November 5, 2002
    Assignee: Aro
    Inventors: Jean-Noël Boyer, Olivier Tiberghien, Daniel Chevassu
  • Patent number: 6470788
    Abstract: An apparatus for moving an operating element has a guide surface along which the operating element may be guided. A drive means provides a driving pulse exerted on the operating element for the movement of the operating element along the guide surface. A gap between the guide surface and the outer surface of the operating element is filled by a layer of a material that acts as an adhesive layer when the operating element is at rest and as a lubricating layer when the operating element is in motion. The outside of the operating element may have a conical profile and the guide surface may have a cylindrical profile, with the gap between the guide surface and the outer surface of the operating element becoming progressively larger in the direction of movement of the operating element. The layer of material in the gap may be a dry or solid lubricant, comprising material such as MoS2 or polytetrafluoroethylene.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: October 29, 2002
    Assignee: Breed Automotive Technology, Inc.
    Inventor: Martin Specht
  • Patent number: 6460449
    Abstract: A retaining unit 8 is constituted by a first retainer 25 and a second retainer 26. The first retainer 25 and the second retainer 26 are mounted, respectively, on a bleeder screw 7 of a cylinder body 11 and a projecting portion of a piston rod 19. While the piston rod 19 is being forced in a cylinder bore 13, first and second engagement portions 25d, 26e are brought into engagement with each other, and the piston rod 19 is retained in a retracted state. The engaged state of the first and second engagement portions 25d, 26e is released by removing the first retainer 25 from the bleeder screw 7, whereby the piston rod 19 is allowed to extend.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: October 8, 2002
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Norihisa Higuchi, Toshiyuki Yamada
  • Patent number: 6453795
    Abstract: A spring-actuated output drive device is used for example in medical aerosol therapy for a miniaturised high-pressure producing device for atomising a small dose of a liquid medicament. A locking-stressing-mechanism for such an output d rive device is to be stressed with the application of a relatively small amount of force and is to be released with one hand and is to operate reliably over a prolonged period of time. The locking-stressing-mechanism comprises a force step-up transmission, for example a screw thrust transmission for stressing the spring, an annularly arranged locking member with engaging locking surfaces, two abutments for limiting the travel of the spring and a release button. It is compact, economical to produce, easy to assemble and comprises components with a low rate of wear. It can be reliably and easily handled by unskilled persons, even when high spring forces are involved. A medicament to be atomised can thus be metered with a very high degree of accuracy.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: September 24, 2002
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Joachim Eicher, Michael Schyra, Richard Forster