Press Cushion Patents (Class 267/119)
  • Patent number: 11141772
    Abstract: A system comprises a ram tool subassembly and a master die subassembly. The ram tool subassembly further comprises a tool stick, a back body, a piston assembly, a piston housing, and a pusher holder. The master die subassembly further comprises a bottom tooling plate, a bottom master jaw, a nose block, a top master jaw, and a top tooling plate.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: October 12, 2021
    Assignee: PROTO-1 MANUFACTURING, L.C.C.
    Inventor: John Schwochert
  • Patent number: 11135635
    Abstract: Disclosed is a process for the blanking of metal parts, in which a multi-layered basic material with a number of mutually stacked, preferably essentially identical, individual layers is placed and clamped partly between a blanking die and a blank holder and partly between a blanking punch and a counter punch and wherein the blanking punch and the counter punch that are moved relative to the blanking die and the blank holder over a distance corresponding to at least a thickness of the multi-layered basic material whereby several blanked parts are cut and separated from the multi-layered basic material.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: October 5, 2021
    Assignee: ROBERT BOSCH GMBH
    Inventors: Sipke Koopmans, Arjen Brandsma, Giel Rompen, Rob Mutsaers, Ronald Cornelissen
  • Patent number: 10752070
    Abstract: A clamping plate is dimensioned to secure a flexible spring member to an end member for forming a gas spring assembly. The clamping plate includes a clamping plate wall with an axis and opposing surface portions oriented transverse to the axis. An opening extends into the clamping plate wall from along each of the opposing surface portions. An elongated damping passage extends in a spiral configuration through the clamping plate wall in fluid communication with the openings. A gas spring assembly includes a flexible spring member that defines a spring chamber, and an end member with an end member wall that defines an end member chamber. The clamping plate is secured to the end member and retains the flexible spring member thereon. The elongated damping passage is in fluid communication between the spring chamber and the end member chamber. Gas transfer between the spring chamber and the end member chamber generates pressurized gas damping during use of the gas spring assembly.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: August 25, 2020
    Assignee: Firestone Industrial Products Company, LLC
    Inventor: Joshua R. Leonard
  • Patent number: 10527121
    Abstract: A gas spring with a casing with an axially extending side wall, an open end and a closed end wall spaced from the open end and a pressure chamber provided in part by the walls to receive a gas therein under pressure and a piston rod slidably received in a housing received in the casing and movable between extended and retracted positions. A pressure relief collar slidably carried around the piston rod and normally projecting axially outwardly of the casing can be displaced axially inwardly during an overtravel condition of the piston rod to displace a portion of a piston rod seal to open an overpressure relief path to allow pressurized gas in the pressure chamber to escape to the outside of the gas spring.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: January 7, 2020
    Assignee: DADCO, Inc.
    Inventor: Jonathan P. Cotter
  • Patent number: 10514051
    Abstract: A gas cylinder actuator with safely device, comprising a tubular containment jacket, two opposite heads for closing the tubular jacket, with corresponding sealing elements between the heads and the jacket, a first head having a through hole for the passage of a stem-piston, and a second opposite head, a stem-piston, between the tubular jacket, the heads and the stem-piston there being a chamber for pressurized gas, wherein at least one head of the two heads is constituted by a body that is separate with respect to the tubular jacket and is retained in the tubular jacket by means of an extraction-preventing shoulder that protrudes from the body of the head and is adapted to abut against a corresponding internal annular protrusion that protrudes radially from the internal surface of the tubular jacket.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: December 24, 2019
    Assignee: SPECIAL SPRINGS S.R.L.
    Inventors: Massimo Fiorese, Daniel Fantinato, Roberto Rech
  • Patent number: 10508664
    Abstract: A gas cylinder actuator with overtravel safety device, comprising: a tubular containment jacket, two opposite heads for closing the tubular jacket, with corresponding sealing elements between the heads and the jacket, one head of which being provided with a through passage hole for a stem-piston, a stem-piston, between the tubular jacket, the heads and the stem-piston there being a chamber for pressurized gas, the gas cylinder actuator being characterized in that the tubular jacket has, at at least one of the portions affected by a head, a lightened portion that is preset to be deformed in case of compression in an axial direction, allowing the relative axial movement of the corresponding head toward the inside of the tubular jacket so as to form a gas discharge passage between the jacket, the head and the corresponding sealing element.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: December 17, 2019
    Assignee: SPECIAL SPRINGS S.R.L.
    Inventors: Massimo Fiorese, Daniel Fantinato, Roberto Rech
  • Patent number: 10421328
    Abstract: End member assemblies include an end member wall dimensioned for securement to a flexible spring member to at least partially define a spring chamber. A reservoir wall is supported on the end member wall and at least partially defines a reservoir chamber having a substantially-fixed volume. The reservoir wall includes at least one passage such that the reservoir chamber is disposed in fluid communication with the spring chamber. A passive control device is operatively associated with the passage such that under a first predetermined condition the passive control device is in a first operable condition in which the gas spring assembly has a first spring rate and such that under a second predetermined condition of use the passive control device is in a second operable condition in which the gas spring assembly has a second spring rate. Gas spring assemblies and suspension systems are also included.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: September 24, 2019
    Assignee: Firestone Industrial Products Company, LLC
    Inventors: Joshua R. Leonard, Graham R. Brookes, Paul J. Fessel
  • Patent number: 10286438
    Abstract: A die cushion-cum-slide cushion device selectively opens and closes a flow channel between a hydraulic pump/motor driven by a servo motor, and hydraulic cylinders that generate slide cushion force, or a flow channel between the hydraulic pump/motor, and hydraulic cylinders that generate die cushion force, by switching a selector valve. Before applying the slide cushion force is started, the servo motor is controlled to allow the hydraulic cylinders to generate required slide cushion force through a check valve. While the slide cushion force is applied, hydraulic circuits, each of which includes a logic valve, control pressure of the hydraulic cylinders, and hydraulic circuits, each of which includes the servo motor, control die cushion pressure of the hydraulic cylinders.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: May 14, 2019
    Assignee: AIDA Engineering, Ltd.
    Inventor: Yasuyuki Kohno
  • Patent number: 9993355
    Abstract: A valve includes a case comprising a pin bore, a pin configured to move axially in the pin bore, wherein the pin seals the pin bore, a first channel in communication with the pin bore, a second channel in communication with the pin bore, wherein the second channel comprises a restrictor at a location offset from the first channel, a third channel in communication with the pin bore, wherein the third channel comprises a check valve, and the second channel and third channel are in communication with each other. The valve can be a miniature valve that is used in the control of hydraulic fluid in prosthesis, such as a prosthetic ankle joint.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: June 12, 2018
    Assignee: OTTO BOCK HEALTHCARE GMBH
    Inventors: Richard Geiger, David Kraige, Jeremy Frank, Jacob Loverich, Ben Gilbert Macomber, Adam Arabian
  • Patent number: 9808849
    Abstract: A slide cushion device includes: a hydraulic cylinder group integrally formed in a board provided immediately below a slide; a pressing member that is disposed in a recessed portion of an upper die that vertically moves together with the slide, in a vertically movable manner; a plurality of slide cushion pins that is provided in the pressing member and penetrates the upper die to be brought into contact with a piston member of the hydraulic cylinder group, wherein a number of the cushion pins is less than a number of hydraulic cylinders disposed in a plane of projection of the recessed portion; and a slide cushion hydraulic device that controls hydraulic pressure to be supplied to a compression chamber of the hydraulic cylinder with which a slide cushion pin is to be brought into contact.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: November 7, 2017
    Assignee: AIDA ENGINEERING, LTD.
    Inventor: Yasuyuki Kohno
  • Patent number: 9716253
    Abstract: Disclosed herein is a battery case including a receiving part having an electrode assembly mounted therein, wherein the receiving part, which is formed by deforming a sheet type base material, is configured to have a stair-like structure in which at least one corner and/or surface forming a shape of the receiving part is deformed.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: July 25, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Young Hoon Kim, Sungjin Kwon, Dong-Myung Kim, Ki Woong Kim, Hyun Park, Soonho Ahn
  • Patent number: 9707612
    Abstract: There are provided a die cushion force control method and a die cushion device that can improve response delay of die cushion force without changing die cushion waiting position upward. In the die cushion force control method, a servo motor is driven according to a die cushion force command B previously set and the die cushion force is generated on the cushion pad. The die cushion force control method includes a step of allowing the cushion pad to wait in a predetermined die cushion waiting position at which a die cushion force action will start, and a preliminary pressurization step of outputting the die cushion force command B and preliminary applying pressure to the cushion pad before a slide of a press machine reaches the die cushion waiting position.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: July 18, 2017
    Assignee: AIDA ENGINEERING, LTD.
    Inventor: Yasuyuki Kohno
  • Patent number: 9593734
    Abstract: A gas-operated spring with overtravel safety device, comprising: a tubular containment jacket, an end face, an opposite annular portion for closing the tubular jacket and for the passage of a piston rod, a piston rod arranged so as to pass through the annular portion, a chamber for pressurized gas being defined between the tubular jacket, the end face, the annular portion and the piston rod, the gas-operated spring comprising elements for clearly indicating that overtravel for the piston rod has occurred.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: March 14, 2017
    Assignee: SPECIAL SPRINGS S.R.L.
    Inventors: Augusto Cappeller, Alessandro Cappeller, Dante Cappeller
  • Patent number: 9551394
    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: Grant
    Filed: September 17, 2014
    Date of Patent: January 24, 2017
    Assignee: DADCO, INC.
    Inventor: Jonathan P. Cotter
  • Patent number: 9353823
    Abstract: A device (1) for checking the state of charge of a gas spring (100), comprises: a supporting structure (2) equipped with connecting means (3) adapted to be reversibly connected to a gas spring (100); a plunger (4) slidably received, at least partly, in the supporting structure and having a first end (4b) adapted to interact, in conditions of use, with a charging valve of a gas spring, the plunger having a second end which has an abutment surface (4d); pushing means (6) operating on the abutment surface (4d) of the plunger (4) to apply a measured thrust on the plunger (4) such as to induce the displacement thereof; a position indicator (5) operatively associated with the plunger (4) and configured to represent the position of the plunger relative to a reference element (7). Also described is a method for checking the state of charge of a gas spring (100).
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: May 31, 2016
    Assignee: BORDIGNON SILVANO S.R.L.
    Inventors: Alberto Bordignon, Simone Bordignon
  • Patent number: 9347510
    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: Grant
    Filed: September 19, 2013
    Date of Patent: May 24, 2016
    Assignee: DADCO, Inc.
    Inventor: Jonathan P. Cotter
  • Publication number: 20150137435
    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, and 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 partially 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 includes a vent path that is disposed between the pressure chamber and the outside of the gas spring and that includes a vent passage through the side wall of the casing and a seal that sealingly interrupts the vent path, wherein displacement of the housing into the casing results in opening of the vent path.
    Type: Application
    Filed: January 28, 2015
    Publication date: May 21, 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
  • Patent number: 8934948
    Abstract: An air dampening assembly for an electronic device comprises a base member. A first piston housing is disposed on the base member. A second piston housing is disposed on the based member opposite the first piston housing. A sliding member is disposed between the first and second piston housing. A first piston is disposed on a first elongated member of the sliding member. The first piston housing is configured to receive the first piston. A second piston is disposed on a second elongated member of the sliding member. The second piston housing is configured to receive the second piston.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: January 13, 2015
    Assignee: BlackBerry Limited
    Inventors: Martin Earl Holman, IV, Bruce Alan Ivanik, Douglas Wayne Moskowitz
  • Publication number: 20150008628
    Abstract: Described is a compensator (1) for unbalanced compression forces for press machines (100), comprising: a first body (20) having a first concave coupling surface (21) and a first end portion (22) opposite the first coupling surface (21); a second body (30) having a second convex coupling surface (31) and a second end portion (32) opposite the second coupling surface (31), the first (21) and second (31) coupling surfaces being geometrically coupled to each other in such a way as to allow a relative rotational movement between the first body (20) and the second body (30). More specifically, an end portion (22, 32) of at least one of the bodies (20, 30) is configured for being fixed to a structural element (101) of a press machine (100), the end portion (32, 22) of the other body (30, 20) being configured for forming an abutment surface designed to interact, in use, with a free end (402) of a stem (401) of a gas cylinder (400) of a press machine.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 8, 2015
    Inventors: Alberto BORDIGNON, Simone BORDIGNON
  • Patent number: 8777191
    Abstract: An energy absorbing and transmitting material comprising a framework of interconnected units comprising at least one unit having a base and a protrusion or cone extending from the base along an axis, and at least one connecting member or rod that connects the unit to at least one adjacent unit, the connecting members extending substantially perpendicular to the axis of the unit from the base, where the framework is comprised of a single elastic material throughout, or configured so that when the framework is perturbed by tilting the unit towards the adjacent unit, the adjacent unit is tilted towards the unit.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: July 15, 2014
    Assignee: Spike Inc.
    Inventors: Randy Kligerman, Brian C. Jamieson, Michael S. Du Maresq
  • Publication number: 20140191451
    Abstract: An overpressure relief plug including a rupture disc and engaging a fill valve in series downstream fluid communication with respect thereto. A gas spring may include a fill port, and the overpressure relief plug and the fill valve in the fill port.
    Type: Application
    Filed: December 13, 2013
    Publication date: July 10, 2014
    Applicant: DADCO, Inc.
    Inventor: James W. Moss
  • Publication number: 20140191452
    Abstract: A gas spring includes a fill valve, and a rupture disc carried by the fill valve. An overpressure relief and fill valve assembly includes a valve housing with a valve passage, the fill valve carried by the valve housing and including a valve stem extending into the valve passage and an overpressure relief passage extending through the fill valve, and a rupture disc carried by the fill valve in communication with the overpressure relief passage. A gas spring may include the valve assembly therein.
    Type: Application
    Filed: December 13, 2013
    Publication date: July 10, 2014
    Applicant: DADCO, Inc.
    Inventor: James W. Moss
  • 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: 8528708
    Abstract: An air damper is provided which can exhibit an appropriate braking force in accordance with an input load. There is provided an air damper including: a tubular cylinder 1 in which both end portions are opened; a piston 2 which moves within the cylinder 1; and a cap 3 which closes a one-end opening of the cylinder 1, wherein the cylinder 1 has an annular seal surface 4 formed on a circumferential surface of the one-end opening, wherein the cap is mounted on the one-end opening side of the cylinder 1 so as to be moveable or deformable along an axial direction of the cylinder 1, wherein the cap is brought into contact with or separated from the seal surface 4 in accordance with a pressure change due to a movement of the piston 2 within the cylinder 1, and wherein a first orifice 14 is opened in a base plate 12 of the cap, characterized in that: a second orifice having an inlet area smaller than the first orifice is defined between the cap 3 and the cylinder 1 during an operation of the first orifice 14.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: September 10, 2013
    Assignee: Piolax Inc.
    Inventors: Takahiro Sakai, Tomoyoshi Ohnuki, Takao Nagai
  • 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.
  • Patent number: 8490763
    Abstract: A delay return gas spring including a piston at least partially received in a cylinder for reciprocation between extended and compressed positions over a cycle including a compression stroke and a return stroke. A seal disposed between the cylinder and the piston separates a primary chamber on one side of the seal from a secondary chamber on another side of the seal during a portion of the cycle. A passage communicates with the secondary chamber and with the primary chamber. The seal is relatively movable between an open position permitting free flow of gas through the passage to a closed position at least partially restricting gas flow through the passage so as to permit gas in the secondary chamber to be compressed in response to movement of the piston toward its extended position, thereby reducing a net return force on the piston and decreasing a velocity of the piston.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: July 23, 2013
    Assignee: DADCO, Inc.
    Inventor: Jason L. Vandine
  • Patent number: 8468866
    Abstract: In the die cushion device, a shock absorber device relieves shock between a cushion pad and a support section. The shock absorber device includes a damping section and an elastic section. The damping section generates reaction force in accordance with the relative speed of the cushion pad with respect to the support section. The elastic section generates reaction force in accordance with the relative displacement of the cushion pad with respect to the support section. The controller section controls a servomotor so that a speed difference between the speed of the slide member and the speed of the support section is set to be a predetermined target speed difference value that changes over time.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: June 25, 2013
    Assignee: Komatsu Ltd.
    Inventors: Takuji Miyasaka, Hirohide Sato, Ryota Yoshimura, Masaya Nakagawa, Eiji Doba, Hiroyuki Ito, Takeo Arikabe
  • Patent number: 8444122
    Abstract: In at least one embodiment, a gas spring includes a casing having an inner surface defining in part a gas chamber, a piston rod and a seal. The piston rod is received at least partially in the casing for reciprocation along an axis between extended and retracted positions. The piston rod has an internal cavity defining a hollow space, a stop and a rod guide disposed adjacent to the inner surface of the casing to guide the reciprocation of the piston rod at least in part. The seal generally is provided between the piston rod and the casing to prevent gas leakage from the gas chamber.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: May 21, 2013
    Assignee: DADCO, Inc.
    Inventors: Jonathan P. Cotter, Michael C. Diebolt, Jeremy M. Kluck
  • Patent number: 8286761
    Abstract: A shock absorber includes a sleeve, a piston accomplishing forward and reverse travels therein, a rod, a piston cap, a rod cap including an orifice and a rod seal mounted therein. The rod seal defines a front face facing the piston and a rear face being opposite to the front face. The rod includes at least two rod regions including annular humps. The front and rear faces operatively interact with the annular humps during the forward and reverse travels, such that the interaction causes deformations of the rod seal thereby cushioning impacts and reducing overloads of the shock absorber. An embodiment of the shock absorber further includes two annular humps represented by a first annular hump, having a first maximal diameter, and a second annular hump, having a second maximal diameter, while the first maximal diameter is greater than the second maximal diameter, preferably by 3-10 micrometers.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: October 16, 2012
    Assignee: Troy Capital Group Corp.
    Inventors: Oleg Olegovich Tikhonenko, Vladimir Pavlovich Lobko
  • Publication number: 20120018933
    Abstract: A press cushion (7, 17, 27) for a hydraulic press (1) including a first layer (9, 19, 39) which is impermeable to fluids and includes an elastomeric material and fibers connected therewith; a second layer (10, 20, 40) connected with the first layer (9, 19, 39), wherein the second layer is also impermeable to fluids, wherein the first layer (9, 19, 39) is provided with a plurality of channels (15, 22, 28, 36) on its side oriented towards the second layer (10, 20, 40), wherein the channels include a material that is flow-capable at least at the operating temperature of the press (1). Additionally the channels (15) are closed fluid tight at least through the second layer (10, 20, 40).
    Type: Application
    Filed: July 21, 2011
    Publication date: January 26, 2012
    Inventor: Martin Marxen
  • Patent number: 8100387
    Abstract: A combination oil/gas spring includes a first hollow casing, a piston capable of fluid-tightly sliding within the casing, a rod connected rigidly with an end portion thereof to a central portion of the piston, a first chamber containing an actuating rod provided inside the casing, a second sealed chamber provided within the same casing on the opposite side of the piston, a mass of hydraulic fluid filling the second sealed chamber, a second hollow casing and a respective second piston provided to slide therewithin, a first conduit connecting the interior of the second sealed chamber with the interior of the second hollow casing, a first valve connected to the first conduit and adapted to selectively open and close it, a second conduit being provided to connect an expansion vessel to the first conduit at a position upstream of the first valve, and a second valve being provided on the second conduit.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: January 24, 2012
    Inventor: Silvano Bordignon
  • Patent number: 7681427
    Abstract: A device for the production and/or machining of parts, in particular for the production of stampings, by at least one die which is capable of being put under pressure and/or force, and which has at least one plate and one die element, the die element being supported in the plate against pressure elements via a resilient element.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: March 23, 2010
    Assignee: Feintool International Management AG
    Inventors: Michael Op de Hipt, Rudolf Welk
  • Patent number: 7472897
    Abstract: A high-pressure, inert gas cushion assembly for the ram or bolster of a metal stamping press includes a manifold having fluid-flow passages defined therein, along with a plurality of cylinder mounting locations each in communication with at least one of the fluid-flow passages. A plurality of cushion cylinders are located respectively in the cylinder mounting locations. Each cylinder includes a body having an inner wall that defines a bore of diameter D. A piston is located in the bore and includes opposite inner and outer faces, wherein the outer face is oriented outwardly relative to the bore and manifold. A fluid seal is supported on the piston and is slidably engaged with the wall defining the bore. One or more bearings are supported on the piston and slidably engaged with the inner wall that defines the bore. The bearing(s) support the piston slidably in the bore for reciprocal sliding movement between extended and retracted positions.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: January 6, 2009
    Assignee: Barnes Group Inc.
    Inventors: Harold L. Lanterman, Steven J. Reilly, Terry L. Gang, Jr., Henry J. Kelm
  • Publication number: 20080284072
    Abstract: A gas spring assembly that is suitable for use on a vehicle suspension system includes a first end member and a second end member that is spaced from the first end member. A flexible wall is secured between the first and second end members and at least partially defines a first gas chamber therebetween. A confinement at least partially forms a second gas chamber that is in communication with the first gas chamber. A porous flow restrictor is operatively disposed between the gas chambers. A suspension system including such a gas spring assembly as well as a method is also included.
    Type: Application
    Filed: May 16, 2008
    Publication date: November 20, 2008
    Applicant: BFS DIVERSIFIED PRODUCTS, LLC
    Inventors: Bradley W. Hayes, Pradipta N. Moulik, Sydney Kelsey
  • Patent number: 7287409
    Abstract: A die cushion device is comprised of die cushion modules which are independently movable and unitized. The individual die cushion modules are provided with a cushion pad, a servomotor, a power transmission mechanism, a power conversion mechanism and a guide member. By configuring in this way, the design of the die cushion is facilitated, a drive mechanism of the die cushion becomes compact, and the number of types of parts used is decreased.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: October 30, 2007
    Assignees: Komatsu Ltd., Komatsu Industrial Corp.
    Inventors: Kazuhiko Shiroza, Yukiyoshi Takayama, Hiroaki Honma, Seiji Seki
  • Patent number: 7270318
    Abstract: The present invention relates to an arrangement in an energy-accumulating piston-cylinder device (1, 2) having a piston (2) and a cylindrical casing (1). The invention is characterized by an openable safety valve (1) arranged in the piston (2) and/or a discharge duct (11) together with an element (8; 17) arranged on the cylindrical casing (1) or the safety valve (10) and in the cylinder chamber, which element is designed, in the event of the piston (2) being inserted into the cylinder chamber by more than a predetermined distance, to act upon the safety valve/the discharge duct (10, 11) in order to expose the said duct (11), permitting a discharge of the pressure in the cylinder chamber.
    Type: Grant
    Filed: November 11, 2002
    Date of Patent: September 18, 2007
    Assignee: Stromsholmen AB
    Inventor: Leif Lundahl
  • Patent number: 7121538
    Abstract: The invention relates to an arrangement in a pressing tool for braking the return movement of pistons/piston rods (D1) of gas-filled springs (D) and thereby also of a sheet metal holder (B) supported thereon after pressing has been performed. The invention is characterised in that each gas-filled spring device (D) is designed with a separate brake cylinder part (E) and brake piston part (F), in which the brake cylinder part (E) is situated adjoining the outer end of the gas-filled spring (D) and in which the brake piston part (F) is situated adjoining the inner end of the piston rod (D1).
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: October 17, 2006
    Assignee: Stromsholmen AB
    Inventors: Johan Runesson, Tim Loose
  • Patent number: 7083164
    Abstract: A high-pressure, inert gas cushion assembly for the ram or bolster of a metal stamping press includes a manifold having fluid-flow passages defined therein, along with a plurality of cylinder mounting locations each in communication with at least one of the fluid-flow passages. A plurality of cushion cylinders are located respectively in the cylinder mounting locations. Each cylinder includes a body having an inner wall that defines a bore of diameter D. A piston is located in the bore and includes opposite inner and outer faces, wherein the outer face is oriented outwardly relative to the bore and manifold. A fluid seal is supported on the piston and is slidably engaged with the wall defining the bore. One or more bearings are supported on the piston and slidably engaged with the inner wall that defines the bore. The bearing(s) support the piston slidably in the bore for reciprocal sliding movement between extended and retracted positions.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: August 1, 2006
    Assignee: Barnes Group Inc.
    Inventors: Harold L. Lanterman, Steven J. Reilly, Terry L. Gang, Jr., Henry J. Kelm
  • Patent number: 6971303
    Abstract: A method and an arrangement in an energy-accumulating piston-cylinder arrangement (A) has a piston/piston rod part (2), guide/end (3) and tubular casing (1). The casing (1) is provided with a fracture or sprain mark (7) in order to initiate a controlled deformation of the casing in the event of a load that produces a stress in excess of a sprain or fracture limit, or of repeated cyclical stressing that gives rise to material fatigue, so that an excess pressure in the arrangement (A) is discharged past the deformed casing.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: December 6, 2005
    Assignee: Stromsholmen AB
    Inventors: Marten Johansson, Per Nordvall, Krister Gustafsson
  • Patent number: 6941789
    Abstract: After molding is started, a large reaction force is obtained by compressing the air within a lower chamber by a piston while maintained in a sealing state. At an intermediate time of the molding, a small reaction force is obtained by communicating the upper and lower chambers with each other by a switching portion of a spool. At a final time of the molding, a large reaction force is again obtained by interrupting a flow path between the upper and lower chambers. The die cushion ability can be mechanically switched in association with the stroke of the piston, the die cushion device can be set such that no time lag is easily caused at a switching time, and the die cushion ability can be instantly switched.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: September 13, 2005
    Assignee: Komatsu Ltd.
    Inventor: Yoshitaka Nishihara
  • Patent number: 6915879
    Abstract: A gas spring comprising a cylinder body filled with compressed gas and an upright rod passing through a rod side end wall member of the cylinder body. By supporting a main shaft unit with the gas spring, the load on a vertical displacement mechanism is reduced. A pair of upper and lower ring-shaped seal members, which seal between the rod end wall member and the rod, are provided inside the rod wall member. Ring-shaped oil filling chambers are formed in between the ring-shaped seal members and between the rod end wall member and the rod. An oil filling mechanism fills the oil filling chambers with lubrication oil.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: July 12, 2005
    Assignee: Pascal Engineering Corporation
    Inventor: Seiji Kimura
  • Publication number: 20040262829
    Abstract: The present invention generally relates to devices and methods for absorbing kinetic energy. In particular, the present device is well suited for use in an automobile door, where it can be positioned for the purpose of absorbing the energy of a side-impact collision. In one embodiment, the device includes a first mass, a shell, and a plate, with the shell being disposed between the mass and plate. Both the first mass and shell are preferably constructed from deformable materials, allowing them to absorb energy during an impact. By absorbing the energy through deformation, the present device reduces the amount of energy that is transmitted through the door and thus reduces the amount of energy that may be transmitted to the occupants of the vehicle.
    Type: Application
    Filed: June 7, 2004
    Publication date: December 30, 2004
    Inventor: Gabriella Etcheverry
  • Publication number: 20040178548
    Abstract: The invention relates to an arrangement in a pressing tool for braking the return movement of pistons/piston rods (D1) of gas-filled springs (D) and thereby also of a sheet metal holder (B) supported thereon after pressing has been performed. The invention is characterised in that each gas-filled spring device (D) is designed with a separate brake cylinder part (E) and brake piston part (F), in which the brake cylinder pail (E) is situated adjoining the outer end of the gas-filled spring (D) and in which the brake piston part (F) is situated adjoining the inner end of the piston rod (D1).
    Type: Application
    Filed: November 26, 2003
    Publication date: September 16, 2004
    Inventors: Johan Runesson, Tim Loose
  • Publication number: 20040113336
    Abstract: The present invention relates to an arrangement in an energy-accumulating piston-cylinder device (1, 2) having a piston (2) and a cylindrical casing (1). The invention is characterised by an openable safety valve (10) arranged in the piston (2) and/or a discharge duct (11) together with an element (8; 17) arranged on the cylindrical casing (1) or the safety valve (10) and in the cylinder chamber, which element is designed, in the event of the piston (2) being inserted into the cylinder chamber by more than a predetermined distance, to act upon the safety valve/the discharge duct (10, 11) in order to expose the said duct (11), permitting a discharge of the pressure in the cylinder chamber.
    Type: Application
    Filed: December 22, 2003
    Publication date: June 17, 2004
    Inventor: Leif Lundahl
  • Patent number: 6749185
    Abstract: A cushion assembly includes a lower end wall which is at least partially enclosed by a tubular cylindrical outer wall. An upper end wall is also partially enclosed by the outer wall. A tubular cylindrical inner wall extends between recesses in the lower end wall and the upper end wall. A piston is disposed within the inner wall and is movable along the inner wall toward the upper end wall under the influence of gas pressure. The piston is movable along the inner wall toward the lower end wall of the influence of force applied against the piston during operation of a press. A passage is formed between an end portion of the inner wall and the lower end wall to conduct a flow of lubrication liquid and gas to lubricate the piston.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: June 15, 2004
    Assignee: Barnes Group Inc.
    Inventors: Steven J. Reilly, Michael V. Sanchez
  • Patent number: 6729173
    Abstract: A hydraulic drawing system for a press is provided for controlling a blank holder. The blank holder can be moved by at least one hydraulic cylinder-piston unit which has at least one pressure chamber. By way of a connection line, the pressure chamber is connected directly with a control block provided for controlling the movements of the at least one cylinder-piston unit. At least one storage element for storing pressure for the at least one cylinder-piston unit is connected by way of a connection line with the control block and, by way of another connection line at least one valve device is connected with the control block. The connection lines extend in each case at least approximately completely within the respective components.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: May 4, 2004
    Assignee: Schuler Pressen GmbH & Co.
    Inventors: Hans Hofele, Andreas Lauke
  • Patent number: 6663089
    Abstract: A fluid pressure cylinder with pressure intensifying function, has an oil-filled hydraulic pressure cylinder which is filled with oil and tightly sealed. A gas-filled gas spring is charged with gas and tightly sealed. By means of gas spring, oil in oil chamber of hydraulic pressure cylinder is pressurized to a pressure level higher than the gas pressure in gas actuating chamber of gas spring. This results in a strong pushing force being generated via output piston of hydraulic pressure cylinder.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: December 16, 2003
    Assignee: Pascal Engineering Corporation
    Inventor: Ichiro Kitaura
  • Patent number: 6516696
    Abstract: A sleeve-type gas spring for a turret indexing press has an annular piston operably associated with a punch tool to reciprocate therewith and defining in part an annular gas chamber constructed to receive a gas under pressure. As the punch tool and piston are driven to their extended position by a press ram or some such other power device, the volume of the gas chamber decreases thereby increasing the pressure within the gas chamber such that when the ram is retracted, the pressure of the gas acting on the piston displaces the piston and the punch tool to their retracted positions. The force acting to retract the piston and the punch is dependent on the initial pressure of the gas within the gas chamber and the change in volume of the gas chamber as the punch tool and piston are extended.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: February 11, 2003
    Assignee: Diebolt International, Inc.
    Inventor: Jonathan P. Cotter
  • Publication number: 20020190445
    Abstract: The present invention relates to a spring system for bicycles having a first load-applying segment (22) and a second load-applying segment (26) as well as at least one positive spring (14) and at least one negative spring (12, 88) arranged to be effectively operable between said first and said second load-applying segment (26).
    Type: Application
    Filed: May 10, 2002
    Publication date: December 19, 2002
    Applicant: DT Swiss AG
    Inventor: Martin Achenbach