And Helical Coil Spring Patents (Class 267/202)
  • Patent number: 9169593
    Abstract: A device for fixing or attaching a wall-mounted drum type washing machine having a tub includes: a plurality of anchor bolts configured to be fixed or attached to a wall; a back panel that extends from the tub; a plurality of coupling members at, in and/or on a rear surface of the back panel; and a plurality of shock absorbing members in and/or fastened to the plurality of coupling members, wherein the plurality of anchor bolts passes through the coupling members and the shock absorbing members, fixing or attaching the wall-mounted drum type washing machine to the wall.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: October 27, 2015
    Assignee: Dongbu Daewoo Electronics Corporation
    Inventor: Dae Hyun Kim
  • Patent number: 8393602
    Abstract: A coil spring with irregular cross section according to the present invention is made by subjecting a coil wire having an irregular cross section to a fatigue-strength improving treatment including a shot peening treatment after coiling the coil wire into a spring configuration, and the coil spring with irregular cross section has a vertical cross sectional profile whose coil inner-peripheral-side section is expressed by following Equation (1) and Equation (2) in a polar coordinate system and orthogonal coordinate system: x=(LR??b)cosnxr ?+?b??(1) y=SR sinnyr ???(2) wherein ? is a deflection angle in said polar coordinate system; and 0°??<90°, 270°??<360°, 0.7?nxr?0.9, 0.8?nyr?1.0, and 0.1SR??b?0.3SR; in said Equation (1) and Equation (2). In accordance with the present invention, it is possible to provide a coil spring with irregular cross section that exhibits more uniform and higher fatigue strength along a cross-sectional peripheral direction of the coil wire.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: March 12, 2013
    Assignee: Togo Seisakusyo Corporation
    Inventors: Hisao Isobe, Jun Matsumoto
  • Patent number: 8348028
    Abstract: In a pneumatic damper for slowing down movable furniture parts, comprising a cylinder and a piston movably disposed in the cylinder so as to form a displacement chamber at one side and a vacuum chamber at the other side of the piston, the piston includes a seal element which, in one end position thereof, is in close contact with the wall of the cylinder whose cross-section increases toward the opposite end of the cylinder so that the sealing effect collapses when the piston approaches its other end position and the piston includes a piston rod, which has a diameter of less than 35% of the piston diameter and sealingly extends through a cylinder end wall.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: January 8, 2013
    Inventors: Günther Zimmer, Martin Zimmer
  • Patent number: 8061690
    Abstract: A support element for a motor vehicle suspension spring, including a main part and a substantially rigid or semi-rigid insert. The suspension spring bears directly on the substantially rigid or semi-rigid insert.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: November 22, 2011
    Assignee: Renault S.A.S.
    Inventors: Sebastien Desprez, Joel Szymanski
  • Publication number: 20090127043
    Abstract: A wheel suspension system for a vehicle includes a mounting base and a striking base spaced from each other and moveable relative to each other along an arced line of motion. An insulator is coupled to and extends from the mounting base. The insulator is formed of an elastomeric material for compression between the mounting base and the striking base, i.e., the insulator is compressed along the arced line of motion between the mounting base and the striking base. The insulator includes a core portion extending along an axis and a ridge portion extending laterally from the core portion about the axis. The ridge portion extends circumferentially along the core portion at an acute angle relative to the base plane for guiding the compression of the insulator along the arced line of motion to uniformly distribute compressive forces within the insulator thereby increasing the durability and reliability of the insulator.
    Type: Application
    Filed: November 21, 2007
    Publication date: May 21, 2009
    Inventor: Daniel G. Dickson
  • Patent number: 7452135
    Abstract: A support for a bearing that provides for damping of the bearing and for centering of the bearing within a housing, in which a plurality of cone shaped annular plates are stacked in series and positioned between the housing and an outer race of the bearing, the annular plates being offset from a plane normal to the rotational axis of the bearing such that vibration from the bearing produces rubbing of adjacent sides of the annular plates, the rubbing provides for friction damping of the bearing. The annular plates can be formed from a single wire strand formed in a coil, or from a plurality of annular cones stacked in series. The offset angle of the adjacent plates can be varied to affect the damping and the spring rate of the support. A coating for a sheet of another material can be placed between adjacent plates to change the frictional resistance due to rubbing between plates.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: November 18, 2008
    Assignee: Florida Turbine Technologies, Inc.
    Inventor: Kenneth W. Holsaple
  • Patent number: 7234569
    Abstract: The invention relates to a damping device for movable furniture parts, for example for doors or drawers, comprising a piston or plunger which is slidably guided in a hollow body, e.g. a cylinder, with said piston or plunger being impinged upon by spring force into its pushed-out position. According to the invention, the hollow body comprises at least one section of a spiral-shaped stay of the internal screw thread, and/or the piston or plunger comprises at least one section of a spiral-shaped stay of the external screw thread. The stays of the screw threads are glidingly supported one on top of the other, or cams or journals of the hollow body or of the piston or plunger are supported on a screw-thread section of the other component. The pitch of the stays of the screw threads is greater than the pitch at which self-locking occurs.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: June 26, 2007
    Assignee: Arturo Salice S.p.A.
    Inventor: Luciano Salice
  • Patent number: 7234664
    Abstract: A draw spring linkage includes a hollow rod formed with a shoulder structure at the first end of the rod and with a slot that extends longitudinally of the rod and is located between the shoulder structure and the second end of the hollow rod. A tongue member includes an attachment portion and a stem that projects from the attachment portion. The stem fits slidingly in the interior space of the hollow rod and is formed with a slot that is aligned with the slot in the hollow rod. A key extends through the slot in the tongue member and the slot in the hollow rod and projects laterally from the hollow rod. A hollow cylindrical spring is threaded by the hollow rod. The first end of the spring engages the shoulder structure, the second end of the spring engages the key, and the spring is held under compression between the shoulder structure and the key.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: June 26, 2007
    Inventor: Brent W. Anderson
  • Patent number: 6978985
    Abstract: A non-sectional locking buffer device. The device utilizes a screw ascending and descending principle as a buffering function, wherein ball bearings or outer screw grooves are configured on a central shaft of the buffer device to operate in coordination with inner screw grooves or ball bearings configured on an inner wall of a buffer chamber. The inner and outer screw mechanisms rely on slippage of the ball bearings in the screw grooves, to reduce a jolting force from repositioning or returning of an upright support, thereby reducing buffer malfunction.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: December 27, 2005
    Assignee: Pro-Glory Enterprise Co., Ltd.
    Inventors: Ching-Yung Lung, Yun-Chin Su
  • Patent number: 6886817
    Abstract: A damping device for movable furniture parts, such as doors or drawers, includes a cylinder filled with a free-flowing medium which is compressed by a piston which has a spring applied to it in its extended position. In order to provide a damping device of this type of smaller length, the cylinder includes a telescopic cylinder having at least two stages. A pressure spring is clamped between the bottom of the outer cylinder of the last stage and the piston of the first stage.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: May 3, 2005
    Assignee: Arutro Salice S.p.A.
    Inventor: Luciano Salice
  • Patent number: 6843352
    Abstract: A shear mount assembly and a compression mount assembly are combined to control ride harshness of a shock absorber. The shock absorber includes a body and a shock rod having a hydraulically sealed portion within the body and a distally extending free portion. A mount assembly is connected at the free portion having both a compression mount and a shear mount therein. The shear mount absorbs low-input vertical loads transferred from the shock rod, and the compression mount limits vertical displacement of the shear mount and absorbs a medium-input vertical load. The shear mount and the compression mount are tuned by selecting the durometer, dimensions, and physical configuration of each mount.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: January 18, 2005
    Assignees: DaimlerChrysler Corporation, Trelleborg Corporation
    Inventors: Mark F Jacoby, Kelly J Reynolds, James M Stevens, Timothy S O'Bryan, Phillip C Boss
  • Patent number: 6702266
    Abstract: A damping strut. An inner damping member is axially engaged with an outer housing. The outer housing is connectable to a tensioner arm. A wedge member connected to an immoveable mounting member is axially engaged with an inner portion of the inner damping member. The outer housing is axially moveable relative to the wedge member. A spring bears upon and urges the outer housing away from an end cap. The end cap comprises a rod, which extends axially within the wedge member and has an end connected to the inner damping member. The rod transmits a spring load force from the end cap to the inner damping member such that the inner damping member radially expands against the outer housing in response to the spring load force, thereby creating a frictional force between the inner damping member and the outer housing which damps an outer housing movement in proportion to the spring force.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: March 9, 2004
    Assignee: The Gates Corporation
    Inventor: Andrzej Dec
  • Publication number: 20030227116
    Abstract: A semiconductor device has a first contact, by which charge carriers are injected into a semiconductor path, and a second contact, by which the charge carriers are extracted from the semiconductor path. The semiconductor path is formed by surface-modified semiconductor particles that bear alkyl or aryl ligands at their surface. The modification with ligands enables the semiconductor particles to form a stable dispersion that can easily be applied to a substrate with a printing technique. Consequently, the semiconductor device according to the invention can be produced very easily and inexpensively.
    Type: Application
    Filed: April 29, 2003
    Publication date: December 11, 2003
    Inventors: Marcus Halik, Gunter Schmid, Katja Steffen, Hagen Klauk
  • Patent number: 6574997
    Abstract: The invention relates to a coupling device (19) for coupling a frictional damper with a middle longitudinal axis (21), which is coupled to an oscillatory washing unit with a drum axis, to a machine frame of a washing machine with a spin gear. The coupling device has a first bending axis, which runs vertically to the central longitudinal axis (21) and parallel to the drum axis, a second bending axis (33) which runs vertically to the central longitudinal axis (21) and to the first bending axis and intersects both at one point, a first connecting element for connecting the coupling device (19) to the frictional damper, a second connecting element for connecting the coupling device (19) to the machine frame and a spring element (24) that is located between the first connecting element and the second connecting element and is connected to both, the flexural strength of the coupling device (19) about the second bending axis (33) being greater than the flexural strength about the first bending axis.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: June 10, 2003
    Assignee: SUSPA Holding GmbH
    Inventors: Dieter Mayer, Helge Siegner
  • Patent number: 6460839
    Abstract: An air damper for a movably supported structural part in automobiles comprises a hollow cylinder closed at one end thereof, a closure cap mounted on the other end of the cylinder, a piston slidably guided within the cylinder, an annular recess at the circumference of the piston, and an annular sealing ring in the recess. The block-like sealing ring is made of a thermoplastic elastomer coated with a layer which has the same static and sliding frictions with the inner wall of the cylinder and the bottom of the recess. A coil spring is placed between the closure cap and the piston. A piston rod of the piston has an elongated rib contacting the spring when the spring is in a relieved state.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: October 8, 2002
    Assignee: ITW Automotive Products GmbH & Co. KG
    Inventor: Hans-Günther Müller
  • Patent number: 6361664
    Abstract: A vehicle system component is provided with an electrical charge to resist corrosion. Preferably, the electrical charge is generated by movement of components adjacent to the suspension component. Friction surfaces may be placed in contact with each other such that and heat is generated upon movement of the vehicle system components. The heat is transferred into electrical energy. In another embodiment, an electrical coil receives a magnetic member which moves within the coil to generate the current. The charge may be stored in a capacitor and periodically dispatched onto said component. The invention thus provides a low cost and simplistic way of resisting corrosion to vehicle components, and in particular to vehicle suspension components.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: March 26, 2002
    Assignee: Meritor Suspension Systems Company
    Inventors: Joe Fader, Jim Hawkins, Steve Yollick, Chris Keeney, Mark Clements
  • Patent number: 6279765
    Abstract: A railcar cushioning device with a gas charged cylinder and a piston contained in the cylinder for cushioning buff and draft impacts. A spring assembly is contained in the cylinder between the piston and an end of the cylinder to locate the piston in a neutral position.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: August 28, 2001
    Assignee: ASF-Keystone, Inc.
    Inventor: Jay P. Monaco
  • Patent number: 5857689
    Abstract: A front fork having a suspension system disposed thereto includes an inner tube extending from a crown portion of the front fork, an outer tube slidably mounted to the inner tube, a ring member threadedly connected to the outer tube, a nut member threadedly connected to the inner tube and a spring mounted to the inner tube between the ring member and the nut member. The inner tube has a middle member and a first block respectively fixedly connected therein and the outer tube has a second block fixedly connected therein, a polygonal rod extending through a polygonal hole in the middle member and fixedly connected between the first block and the second block.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: January 12, 1999
    Assignee: Fairly Bike Manufacturing Co. Ltd.
    Inventor: Percy Chien
  • Patent number: 5820114
    Abstract: A shock absorber for a real wheel of a bicycle includes a body for connection to an axle of the wheel, a lower mounting member threadedly engaging around a circumferential periphery of the body, a first cushioning element made of urethane fixedly received in a cavity of the body, an upper mounting member for connection to a frame of the bicycle, a second cushioning element made of urethane mounted between the upper mounting member and the body, a rod having a top end fixedly connected to the upper mounting member and extending downwardly through the second and first cushioning elements, wherein the rod has an interference fit with the first and second cushioning elements, and a spring fixedly mounted between the upper and lower mounting members.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: October 13, 1998
    Inventor: Chin-Sung Tsai
  • Patent number: 5720369
    Abstract: An adjustable length strut having a unique locking device. An annular spring within a housing surrounds an actuator rod. An actuator member engages one end of the annular spring axially compressing it and causing radial bulging resulting in locking the rod in position relative to the housing. Numerous embodiments are disclosed which may replace gas springs in such applications as seat height adjusters, chair arm adjusters and seatback adjusters. An embodiment is disclosed employing a switch to activate and deactivate the actuator member.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: February 24, 1998
    Assignee: Lord Corporation
    Inventor: Richard P. Thorn
  • Patent number: 5613580
    Abstract: A plurality of embodiments of dual-rate linear dampers which can be utilized as hold open rods. These dampers provide significantly greater resistance to movement in one direction than in the other and, in the claimed embodiment, effectively lock in the hold open position unless and until the design breakover force is incurred. A second spring causes axial compression and, hence, radial bulging, of a first spring causing a inner cylindrical member to be locked in position relative to an outer cylindrical housing. An actuator includes a first rod that extends through the inner cylindrical member, and a second rod portion that is biased by a third spring to a non-engaging position relative to the first rod. A laterally extending lever can be manually engaged to overcome the bias of the second and third springs to unload the first spring significantly reducing the resistance force enabling the relative positions of the inner and outer cylindrical members to be adjusted.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: March 25, 1997
    Assignee: Lord Corporation
    Inventor: Robert A. Young
  • Patent number: 5549182
    Abstract: A frictional damper for spinner-type washing machines comprises a housing and a tappet, which is coaxially displaceable within the latter and the inner end of which is provided with a damping piston. The damping piston is disposed on a piston-bearing section of the tappet to be displaceable between biased compression springs bearing against stops, and provided with a friction lining elastically pressed against the inside wall of the housing.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 27, 1996
    Assignee: Suspa Compart Aktiengesellschaft
    Inventors: Manfred Ehrnsberger, Dieter Mayer, Helge Siegner
  • Patent number: 5462302
    Abstract: A suspension system for the front wheel of a bicycle or motorcycle, which has a minimum amount of friction. The suspension system includes an upper and a lower swingarm, with a spring and elastomer combination, which works as a friction damper on the inside coils on the spring. The relative angle and length of the swingarm to one another, permits the linear movement of the wheel on impact, to optimize suspension performance. The invention also desirably incorporates various elements which provide for the structural rigidity of the suspension assembly and light weight. In particular, the design preferably incorporates standard bicycle or motorcycle components. For example such components may include wheels, brakes, axles and steering components.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: October 31, 1995
    Inventor: Horst Leitner
  • Patent number: 5390993
    Abstract: A pressure control valve is disclosed comprising a valve tappet (1) guided in a valve housing (3) and accommodating a compression spring (4), with a valve closure member (10) on one end of the valve tappet (1) and mating with a valve seat (9) establishing a connection between a pressure supply port (11) that emanates from a pressure fluid source and a pressure return channels (12) once the pressure attains a specific preset desired valve. In order to diminish noise, at least one friction element (2) is in engagement with the valve tappet (1) movable to abut on radial friction surfaces of the valve housing (3) and/or the valve tappet (1).
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: February 21, 1995
    Inventors: Erhard Beck, Anton David, Helmut Weisbrod, Horst Kornemann
  • Patent number: 5248159
    Abstract: A bicycle shock absorber system employs a rubber sleeve trapped between two bushings which are spring loaded so as to increase the force on the rubber sleeve as spring force increases with travel. The rubber sleeve and bushings move with the fork stem which is rigidly attached to the fork and wheel and which slide inside an oil coated steerer tube which in turn rotates inside the outermost head tube which is integral with the bicycle frame. Upper and lower drive flexures permit relative sliding motion but rigidly prevent relative rotary motion so that steering forces are rigidly transferred into the fork stem. The internal elements operate in a bath of heavy oil which coats all the sliding elements providing complete lubrication and the viscous "feel" of a hydraulic shock absorber. Any combination of spring and damping rates may be achieved by changing springs and the oil viscosity. The system is designed to be small and compact enough to fit in a common "oversize" bicycle headtube.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: September 28, 1993
    Inventor: James D. Moore
  • Patent number: 4960215
    Abstract: The draft gear includes: friction elements; coil spring elements; and elastomer elements. With respect to the friction elements, three groups of friction surfaces are defined each of which create a specific angle with respect to a centerline passing down the center of the draft gear. The elastomer elements are interconnected multiple segmented columns having specific heights and occupying particular volumes with respect to the coil spring elements. Particular hardness and number of segments of the elastomer elements are also defined.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: October 2, 1990
    Assignee: Miner Enterprises, Inc.
    Inventor: Richard A. Carlstedt
  • Patent number: 4877226
    Abstract: A fluid shock absorber of either the pneumatic or liquid type having a frustoconical threaded bleed plug for varying the shock absorbing capacity of the shock absorber. A shock absorber construction utilizing air or liquid having a piston which is expandable whereby expansion to the associated cylinder wall exerts a frictional resistance proportional to the variation in back pressure resulting from the variable restricted flow past the frustoconical bleed plug. A liquid-type shock absorber having a self-contained chamber and a frustoconical bleed plug arrangement wherein liquid from the cylinder is forced into the chamber through the frustoconical bleed plug arrangement. In certain embodiments the bleed arrangement is located in the cylinder wall, and in another embodiment it is located in the piston head.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: October 31, 1989
    Assignee: Tayco Developments, Inc.
    Inventor: Paul H. Taylor