Coil Patents (Class 267/286)
  • Patent number: 10065471
    Abstract: A coil spring for a vehicle suspension according to one embodiment includes a lower end turn portion, an upper end turn portion, and a cylindrical effective portion between the lower end turn portion and the upper end turn portion. In at least one of the upper end turn portion and the lower end turn portion, a taper portion having a taper length and a taper thickness for controlling a force line of the coil spring is formed. The taper portion is formed such that the thickness is reduced in a tapered way from a thickness varying portion provided in the middle of the end turn portion toward a distal end of the wire along its length. The thickness varying portion is arranged at a position close to the force line.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: September 4, 2018
    Assignee: NHK SPRING CO., LTD.
    Inventor: Shinichi Nishizawa
  • Patent number: 9562616
    Abstract: In accordance with an exemplary embodiment, a method for manufacturing a bypass valve of a turbine engine control system is described. The bypass valve includes a proportional valve and an integrator valve and the integrator valve includes an integrator spring assembly. The method includes forming the integrator spring assembly using an additive manufacturing technique. The integrator spring assembly comprises first and second end portions with a spring portion disposed between the first and second end portions. The first and second end portions and the spring portion are formed as an integral unit without welding or brazing using the additive manufacturing technique. The method further includes assembling the integrator spring assembly, the integrator valve, and the proportional valve into a complete bypass valve assembly.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: February 7, 2017
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Laurie Strom, Donald G. Godfrey, Harry Lester Kington, Douglas Hall, Mark C. Morris
  • Patent number: 9416836
    Abstract: A supporting projection is formed on a resin base plate on which a seat winding portion of a coil spring is fitted. The supporting projection has such rigidity that a distal end portion does not deflect against a spring force applied radially inwards from the seat winding portion of the coil spring. On the other hand, an elastic deflectable area which deflects elastically by the spring force applied radially outwards from the seat winding portion of the coil spring is formed in an area which extends from a proximal end to the distal end portion of the supporting projection.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: August 16, 2016
    Assignee: PIOLAX, INC
    Inventor: Toshie Fueki
  • Patent number: 9211775
    Abstract: A coil spring suspension height modification apparatus includes a frame connection plate securable to a vehicle frame, a coil spring brace plate for locating a coil spring, and an adjustment member for selectively adjusting the axial spacing between the frame connection plate and the coil spring brace plate. The selective axial spacing adjustment correspondingly adjusts the suspension height of the vehicle.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: December 15, 2015
    Assignee: Stempf Automotive Industries, Inc.
    Inventors: John W. Ryshavy, Shawn C. Miller
  • Patent number: 8925908
    Abstract: A spring (10), for a locking device of a vehicle seat, is designed as a yoke spring defining an axis (A) and made of a spring wire. A cross section diameter (q) has one leg (10a) on each of both ends of the spring wire. The two legs (10a) can pivot relative to each other in a circumferential direction of the axis (A), thereby transitioning the spring (10) from a relaxed state into a tensioned state. At least one first winding (10b) is provided between the legs (10a) that is wound completely around the axis (A) and having a winding diameter (di) in the relaxed state. At least one adjacent second winding (10b) is provided between the legs (10a) and disposed offset along by the axis (A) by a pitch (h), wherein the second winding (10b) may optionally be wound not fully about the axis (A). The second winding (10b) has a winding diameter (d2) in the relaxed state. The pitch (h) is less than the cross section diameter (q).
    Type: Grant
    Filed: December 5, 2009
    Date of Patent: January 6, 2015
    Assignee: Johnson Controls Components GmbH & Co. KG.
    Inventors: Peter Müller, Volker Windecker
  • Publication number: 20140353893
    Abstract: A wrench and nut combination, including: a wrench lug including: a wrench lug feature that substantially mates with a nut feature of a nut of a shock absorber during a first rotation of said nut, relative to external body threads on a body of the shock absorber, in a first direction, wherein the wrench lug feature and the nut feature release during a second rotation of said nut, relative to the external body threads, in a second direction, wherein at least one of the first rotation and the second rotation causes an adjustment to a compressive coil spring pre-load of a set of coil springs disposed in the shock absorber.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 4, 2014
    Inventor: Paul Cox
  • Patent number: 8857583
    Abstract: A hydraulic shock absorber that can reduce outflow amount of oil by maximally removing an oil film attached to an outer periphery of a rod and that can achieve securement of high slidability between the rod and a rod packing and prevention of wear of the rod packing. A rod packing interposed between an outer periphery of a rod and an inner periphery of a rod-side end wall includes a first lip for scrapping off an oil film attached to the outer periphery of the rod, and a ring-shaped grease holding member for supplying holding grease to the outer periphery of the rod. The grease holding member is in contact with the outer periphery of the rod at a position closer to a rod distal end than the first lip.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: October 14, 2014
    Assignee: SMC Corporation
    Inventors: Eiko Miyasato, Akira Hiroki, Junya Kaneko, Youji Takakuwa, Kengo Monden, Masayuki Ishikawa, Mariko Kessoku
  • Publication number: 20130106038
    Abstract: A spring seat to define a spring height for a vehicle suspension system including a base cylinder defining an interior cylindrical surface and an exterior cylindrical surface, an external attachment mechanism coupled to the exterior cylindrical surface of the base cylinder to receive a coil spring on either of two opposing surfaces of the external attachment mechanism, and an internal attachment mechanism coupled to the interior cylindrical surface of the base cylinder, the internal attachment mechanism to engage a shock absorber on either of two opposing surfaces of the internal attachment mechanism, the internal attachment mechanism offset along a longitudinal axis of the base cylinder from the external attachment mechanism to provide two separate height settings for the coil spring relative to the shock absorber in the vehicle suspension system.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 2, 2013
    Applicant: TAP Worldwide, LLC
    Inventors: Jason Michael Miyamoto, Richard Anthony Botello
  • Patent number: 8322500
    Abstract: A shock absorber housing for a shock absorber of a vehicle comprises a tube, which has a tubular wall, and an attaching element joined onto the tubular wall, the attaching element determining a critical force introduction area of an introduction of a force into the tubular wall, the tube in a longitudinal direction being built up from a first tube section having a first tubular wall and at least a second tube section having a second tubular wall, the first tube section and the second tube section being joined together by their ends facing one another. The first tube section and the second tube section are joined together with a tubular wall overlap of the first and second tubular wall, which overlap extends in a longitudinal direction, the tubular wall overlap being situated in the critical force introduction area of the attaching element.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: December 4, 2012
    Assignee: Progress-Werk Oberkirch AG
    Inventor: Johannes Obrecht
  • Patent number: 8308150
    Abstract: A spring wire with hardness of 50 to 56 HRC is subjected to first and second shot peening processes within a warm working temperature range of 150 to 350° C. In the first shot peening process, the first shot of a shot size of 1.0 mm or more is used. In the second shot peening process, the second shot smaller in shot size than the first shot is used. Through these shot peening processes, compressive residual stress is imparted to the spring wire. The spring wire includes a residual stress increase part, residual stress peak part, and residual stress decrease part. In the residual stress decrease part, a part including the compressive residual stress magnitude of which is equivalent to the magnitude of the compressive residual stress at the surface of the spring wire exists at a position at a depth exceeding the permissible pit depth.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: November 13, 2012
    Assignee: NHK Spring Co., Ltd.
    Inventors: Akira Tange, Hideki Okada, Isao Sumiyoshi, Mitsuhiro Sugiyama
  • Publication number: 20120049421
    Abstract: The invention concerns a vehicle oscillation device with a lower part (1) and an upper part (2, 2a, 2b) positioned higher and spring-mounted in relation to the lower part (1) in the vehicle longitudinal direction (21) and/or vehicle width direction (22) by means of a spring device (7, 7a, 7b, 8; 18), wherein the vehicle longitudinal direction (21) and/or the vehicle width direction (22) constitute spring travel directions (9, 11), wherein at least one damper (3, 3a; 4, 4a) is arranged which extends with its longitudinal extension in a plane defined by the vehicle longitudinal direction (21) and the vehicle width direction (22), is mounted on the lower part (1) pivotably about an axis (17, 24) oriented perpendicular to the plane, and is connected with a first end (5, 5a; 6, 6a; 16) to the upper part (2).
    Type: Application
    Filed: August 25, 2011
    Publication date: March 1, 2012
    Inventors: Erwin HALLER, Jens Kolb
  • Publication number: 20120049478
    Abstract: Systems and methods for weight transfer in a vehicle are provided. One system includes a plurality of springs and a plurality of movable spring seats configured to adjust a length of the plurality of springs. Additionally, a pneumatic actuator is provided that is connected to the plurality of movable springs and configured to move the movable spring seats to adjust the length of the plurality of springs. Further, a controller is provided that is coupled to the pneumatic actuator to control the pneumatic actuator to adjust the length of the plurality of springs.
    Type: Application
    Filed: August 26, 2010
    Publication date: March 1, 2012
    Inventors: Munishwar Ahuja, Nikhil Subhashchandra Tambe, Bret Worden, Mandyam Sridhar
  • Publication number: 20110079945
    Abstract: A coil spring suspension designed for a handlebar-steered vehicle. The coil spring suspension generally includes a first tube, a coil spring, a shaft and a guide. A first end of the coil spring is disposed within the first tube and fixedly supported proximate a first end of the first tube. The coil spring extends beyond a second end of the first tube. The shaft fixedly supports a second end of the coil spring. The shaft and the first tube are slidably displaced relative to each other upon suspension loading to lengthwise compress the coil spring. The guide is disposed within the first tube and connected to the coil spring between the first and second ends of the coil spring. The guide is displaced with the coil spring under suspension loading and limiting lateral displacement of the coil spring.
    Type: Application
    Filed: October 1, 2009
    Publication date: April 7, 2011
    Applicant: SRAM, LLC
    Inventor: Robert Powell
  • Publication number: 20110074079
    Abstract: A manufacturing method of a coil spring for an automobile suspension includes forming a material into a coil shape; performing a heat treatment step on the material; performing a warm shot peening step on the material, and performing a hot setting step on the material. By performing the warm shot peening step prior to the hot setting step, a stronger compressive residual stress is imparted in a direction along which a large tensile stress acts during actual use of the coil spring, thereby improving sag resistance and durability of the coil spring. A coil spring is also manufactured according to this method.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 31, 2011
    Applicant: CHUO HATSUJO KABUSHIKI KAISHA
    Inventors: Tomohiro Nakano, Takayuki Sakakibara, Takanori Kuno, Shingo Mimura, Masami Wakita
  • Publication number: 20110018227
    Abstract: There is described a shock absorber strut for a bicycle, comprising a piston (12), a cylinder (13) and a resilient element (20) positioned within the cylinder. The piston extends out of one end of the cylinder, and the other end of the cylinder is closed by a casing made up of two housing halves. Mounting bushings are integrally formed in the housing halves and on the piston end, respectively, for fixing the shock absorber to a bicycle frame. The piston (12) can be withdrawn from the cylinder (13) by a simple tension, without the use of tools.
    Type: Application
    Filed: August 28, 2007
    Publication date: January 27, 2011
    Applicant: Karbon Kinetics Ltd
    Inventor: Richard Thorpe
  • Publication number: 20100320662
    Abstract: A spring wire with hardness of 50 to 56 HRC is subjected to first and second shot peening processes within a warm working temperature range of 150 to 350° C. In the first shot peening process, the first shot of a shot size of 1.0 mm or more is used. In the second shot peening process, the second shot smaller in shot size than the first shot is used. Through these shot peening processes, compressive residual stress is imparted to the spring wire. The spring wire includes a residual stress increase part, residual stress peak part, and residual stress decrease part. In the residual stress decrease part, a part including the compressive residual stress magnitude of which is equivalent to the magnitude of the compressive residual stress at the surface of the spring wire exists at a position at a depth exceeding the permissible pit depth.
    Type: Application
    Filed: March 26, 2010
    Publication date: December 23, 2010
    Applicant: NHK Spring Co., Ltd.
    Inventors: Akira TANGE, Hideki Okada, Isao Sumiyoshi, Mitsuhiro Sugiyama
  • Patent number: 7841088
    Abstract: A suspension coil spring, when assembled to a suspension device, in which a spring reaction axis is positioned coincident with or sufficiently close to a load input axis, and the design and manufacture of coil springs are facilitated. Namely, A suspension coil spring (19) in a free state is formed so that a coil axis (AC) is bent in V-shape at bend point (PB) and the distance from the end turn center (CU) of the upper seating surface (38) to an imaginary coil axis (AI) is an upper inclination amount (VU), and the distance from the end turn center (CL) to the imaginary coil axis (AI) is a lower inclination amount (VL). When the suspension coil spring (10) is interposed between spring seats (22, 24) in the suspension device and compress along a strut axis, the spring reaction axis of the suspension coil spring (10) is inclined and offset with respect to the imaginary coil axis (AI) according to the inclination amounts (VU, VL).
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: November 30, 2010
    Assignee: Mitsubishi Steel Mfg. Co., Ltd.
    Inventors: Junji Ogura, Yukihiro Sugimoto, Masahiko Shimizu
  • Publication number: 20100289199
    Abstract: Disclosed is a protective tube for a coil spring of a vehicle suspension device. The protective tube includes a cut-out portion through which the coil spring is fitted therein. The cut-out portion has a pair of upper and lower outwardly protruding wings. The wings are joined to each other by high-frequency welding. The protective tube prevents foreign materials from entering the cut-out portion. In addition, the protective tube is easy to manufacture by molding.
    Type: Application
    Filed: July 30, 2010
    Publication date: November 18, 2010
    Applicant: DONG YANG PHYSICAL & CHEMICAL
    Inventor: Won Sik LEE
  • Publication number: 20100252972
    Abstract: A method and apparatus for a suspension comprising a spring having a threaded member at a first end for providing axial movement to the spring as the spring is rotated and the threaded member moves relative to a second component. In one embodiment, the system includes a damper for metering fluid through a piston and a rotatable spring member coaxially disposed around the damper and rotatable relative to the damper.
    Type: Application
    Filed: March 19, 2010
    Publication date: October 7, 2010
    Inventors: Christopher Paul Cox, Michael David Marquez, Everet Owen Erickson
  • Patent number: 7793923
    Abstract: A wave coil spring includes: a spring main body which has a spiral structure of a wave-shaped spring material, the spring main body bearing an axial compressive load in such a state that surfaces of the spring main body which face each other are brought into contact with each other at a plurality of contact portions, the plurality of contact portions including: a first contact portion where a component of force is produced with application of the compressive load, which attempts to cause the spring main body to slide in a direction in which the coil main body is wound spirally; and a second contact portion where a component of force is produced with application of the compressive load, which attempts to cause the spring main body to slide in a direction in which the spring main body is unwound spirally.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: September 14, 2010
    Assignee: Piolax, Inc.
    Inventor: Hiroyuki Suzuki
  • Publication number: 20100065997
    Abstract: A shock-absorbing spring for vehicles has a deformed egg-shaped cross section different from a conventional round cross section. In comparison to the conventional spring under a same length, the invention has a lighter weight and a longer spring travel. Moreover, stress can be uniformly distributed toward two sides of the cross section of the invention so that the invention can bear more stress and lengthen its service life.
    Type: Application
    Filed: September 18, 2008
    Publication date: March 18, 2010
    Inventor: Ching-Liang LIU
  • Patent number: 7631882
    Abstract: A vehicle height adjustment device has an adjustment bolt (30) rotatably supported by or fixed to a wheel-side member or a vehicle-body member, and a spring seat member (10) threadedly engaging with the adjustment bolt. Rotation of the spring seat member is limited by a bump rubber pedestal (41) (or a coil spring bracket (9)). Displacement of the spring seat member occurs in an axial direction of rotation of the bolt, in accordance with rotation of the bolt. According to the present invention, rotation of the spring seat involved in rotation of the bolt for adjusting the vehicle height can be restricted, and a construction of a vehicle height adjustment mechanism can be simplified so that the number of parts or members of the device is reduced.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: December 15, 2009
    Assignee: Isuzu Motors Limited
    Inventors: Satoshi Hirao, Susumu Kawahata
  • Publication number: 20090106006
    Abstract: A finite element analysis (FEA) based coil spring design method that utilizes a reverse engineering based concept. The method involves first designing a desired jounce profile, which is typically an output in the conventional FEA based design, and then reversely determining the corresponding free profile necessary for manufacturing a spring having desired performance specifications.
    Type: Application
    Filed: October 19, 2007
    Publication date: April 23, 2009
    Inventors: Shinichi Nishizawa, Tadashi Sakai
  • Patent number: 7503553
    Abstract: A flexible utility body mount assembly is provided for connecting a utility body to the frame of a utility truck. The mount comprises a frame bracket rigidly attached to the truck frame and a body bracket rigidly attached to the utility body. The frame bracket includes a block and a spacer. A compression element travels through a bore within the block and connects the body and frame brackets. The block limits the lateral movement of the mount. The spacer fits between the utility body and the truck frame and allows for proper alignment between the body and frame brackets. The compression element comprises a bolt, a compression spring and a rebound element such that the compression spring is secured about the bottom side of the block while the rebound element is secured about the top.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: March 17, 2009
    Assignee: Astoria Industries of Iowa, Inc.
    Inventors: Jack D. Brannan, Robert J. Wolf
  • Publication number: 20090033011
    Abstract: A cushion includes a cylinder, a base, an elastic element, a first bushing and a second bushing. The cylinder is made of a composite material and formed with a lug. The base is made of a composite material and formed with a lug at an end and a threaded bolt at another end. The threaded bolt is inserted into the cylinder. The elastic element is compressed between the cylinder and the base. The first bushing is disposed in the lug of the cylinder. The first bushing is made of another material than the composite material of the cylinder. The second bushing is disposed in the lug of the base. The second bushing is made of another material than the composite material of the base.
    Type: Application
    Filed: July 30, 2008
    Publication date: February 5, 2009
    Inventor: Tsung Jen CHEN
  • Publication number: 20080258367
    Abstract: A method of manufacturing a vehicle suspension component, such as a helical coil spring, includes the step of rotating a first impeller to project ceramic peening media in a first direction toward the vehicle suspension component to peen a surface section of the vehicle suspension component. In one example, the vehicle suspension component is peened with metal peening media before peening with the ceramic peening media.
    Type: Application
    Filed: April 17, 2007
    Publication date: October 23, 2008
    Inventors: Jeffrey Paul Dixon, James Hall, Ryan Versluis, Joseph A. Fader, Francois-Xavier Abadie
  • Patent number: 7416175
    Abstract: A spring seat assembly for a suspension system of a vehicle utilizing a coil spring. The spring seat assembly includes a first spring seat retainer having a central axis. The first spring seat retainer includes a flange and a pocket portion extending from the flange toward a distal end. The flange includes a first side and a second side extending radially from the central axis in a spaced and parallel relationship. The flange includes a plurality of ribs that extend radially relative to the central axis. The ribs project axially from the first side and the second side of the flange and are spaced angularly from one another. The ribs on the first side are angularly offset from the ribs on the second side for dampening vibration and absorbing noise upon a compression of the coil spring.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: August 26, 2008
    Assignee: BASF Corporation
    Inventor: Sadiq Al-Dahhan
  • Publication number: 20080157449
    Abstract: A wheel suspension is described with a wheel-guiding McPherson strut unit which has a helical compression support spring, a shock absorber which is connected on one end to the body and on the other end to the wheel, and a suspension arm, the helical compression spring being made such that the helical compression spring at least partially compensates for transverse forces which occur on the shock absorber without the action of the helical compression spring. To enable the weight of the helical compression spring to be reduced, the helical compression spring is constructed and arranged so that the stress in the spring is at least approximately, preferably exactly, the same on the side of the spring center line or line of action of the spring force facing the wheel as on the side facing away from the wheel. This makes it possible to reduce the weight throughout by roughly 10%.
    Type: Application
    Filed: December 18, 2007
    Publication date: July 3, 2008
    Applicant: Muhr und Bender KG
    Inventors: Robert BRANDT, Joerg NEUBRAND, Hans-Ulrich KRIESE
  • Patent number: 6988718
    Abstract: A wheel-guiding spring strut, optionally with internal level regulation, including a shock strut, optionally constructed as a self-pumping hydropneumatic spring strut, a piston rod supported at an upper supporting bearing, and a coil spring which is fixed between the spring strut and the supporting bearing at a spring plate. The spring plate that cooperates with the end of the piston rod is arranged so as to be cardanically movable relative to the piston rod.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: January 24, 2006
    Assignee: Mannesmann Sachs AG
    Inventors: Hans-Dieter Eulenbach, Hubert Beck, Albrecht Nachtigall
  • Patent number: 6935627
    Abstract: A coil spring mounting structure for a suspension strut includes a spring bracket secured to a shock-absorber. The spring bracket has a coupling hole, which is configured to receive a screw threaded end of a coil spring. Nuts are screw-coupled to the screw threads of the coil spring, thereby fixing the coil spring to the spring bracket.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: August 30, 2005
    Assignee: Hyundai Mobis, Co., Ltd.
    Inventor: Dall-Hee Jung
  • Patent number: 6883651
    Abstract: A dust cover receiving structure of a hydraulic shock absorber in which a seat rubber is interposed between a suspension spring and a spring seat. The seat rubber has a spring receiving portion which is arranged between the suspension spring and the spring seat, a centering portion which is fitted to a damper tube and guides an end portion of a dust cover in such a manner as to align the dust cover with an axial center of the damper tube, and a cover receiving portion which is provided between the spring receiving portion and the centering portion, and which receives an end surface of the dust cover.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: April 26, 2005
    Assignee: Showa Corporation
    Inventor: Yukio Fukaya
  • Patent number: 6883790
    Abstract: The invention comprises a vehicle strut assembly. A strut has a first seat mounted to the strut and a second seat mounted to a vehicle body. A spring is mounted between the first seat and the second seat and is disposed around the strut. The spring has a compressed state and an uncompressed state. In the compressed state, the spring has a middle portion that defines a spring centerline. In the uncompressed state, the spring has ends portions extending towards opposite sides of the spring centerline.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: April 26, 2005
    Assignee: ArvinMeritor Technology, LLC
    Inventors: Marlon V. Bottene, Joseph A. Fader, Steven J. Doyle, Jr., Monte G. Williams, Steven G. Saieg, George N. Lasic, Thomas R. King
  • Publication number: 20040201155
    Abstract: A flexible utility body mount assembly is provided for connecting a utility body to the frame of a utility truck. The mount comprises a frame bracket rigidly attached to the truck frame and a body bracket rigidly attached to the utility body. The frame bracket includes a block and a spacer. A compression element travels through a bore within the block and connects the body and frame brackets. The block limits the lateral movement of the mount. The spacer fits between the utility body and the truck frame and allows for proper alignment between the body and frame brackets. The compression element comprises a bolt, a compression spring and a rebound element such that the compression spring is secured about the bottom side of the block while the rebound element is secured about the top.
    Type: Application
    Filed: April 11, 2003
    Publication date: October 14, 2004
    Applicant: Astoria Industries of Iowa, Inc.
    Inventors: Jack D. Brannan, Robert J. Wolf
  • Publication number: 20040183243
    Abstract: A spring enhancer comprising a body installed between the space of the springs; the present invention is an extra device without changing any original structure and is directly installed onto the original springs, such scheme is simple in structure and easy to install, not only solve the tedious and high cost to re-equip the shock absorbers of automobiles and also improve the over-leaning condition due to the deformation of springs.
    Type: Application
    Filed: January 14, 2004
    Publication date: September 23, 2004
    Inventors: Yen-Ming Chen, Te-Chung Chen
  • Publication number: 20040119218
    Abstract: A spring seat is disclosed which is employed on a spring that serves to absorb and attenuate torsional vibrations. The spring seat includes a seat body that serves to support an end portion of the spring, and a sliding portion that is fixed to an outer side of the seat body and composed of a material that is different from that of the seat body.
    Type: Application
    Filed: December 4, 2003
    Publication date: June 24, 2004
    Applicant: Exedy Corporation
    Inventors: Hideyuki Imanaka, Hideki Hashimoto, Keisuke Fujioka
  • Publication number: 20040084821
    Abstract: The invention comprises a vehicle strut assembly. A strut has a first seat mounted to the strut and a second seat mounted to a vehicle body. A spring is mounted between the first seat and the second seat and is disposed around the strut. The spring has a compressed state and an uncompressed state. In the compressed state, the spring has a middle portion that defines a spring centerline. In the uncompressed state, the spring has ends portions extending towards opposite sides of the spring centerline.
    Type: Application
    Filed: November 6, 2002
    Publication date: May 6, 2004
    Inventors: Marlon V. Bottene, Joseph A. Fader, Steven J. Doyle, Monte G. Williams, Steven G. Saieg, George N. Lasic, Thomas R. King
  • Patent number: 6726191
    Abstract: A lower spring sheet has receiving portions on a sheet surface that supports a coil spring. Thus the sheet surface and a spring end portion of the coil spring come into contact discretely. The contact positions between the coil spring and the sheet surface maintain unchanged, however a undulated portion the spring end portion may have due to the manufacturing tolerance is extended when the coil spring is compressed.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: April 27, 2004
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Koichi Miyagawa, Takashi Fujii, Nobuo Momose, Junji Ogura, Masahiko Shimizu
  • Patent number: 6712346
    Abstract: The present invention is directed to a helical compression spring which is mounted on a vehicle body to be compressed between an upper seat and a lower seat. The spring is formed to provide a coil axis to be substantially curved at a predetermined radius of curvature in an unloaded state of the spring. A pitch of a lower end coil of the spring is set to tilt a lower end plane of the spring at a first angle to the lower seat in a direction for shortening the longitudinal length of the spring at the inside of the curvature in the unloaded state of the spring, and/or a pitch of an upper end coil of the spring is set to tilt an upper end plane of the spring at a second angle in a direction for shortening the longitudinal length of the spring at the outside of the curvature in the unloaded state.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: March 30, 2004
    Assignee: Chuo Hatsujo Kabushiki Kaisha
    Inventor: Toshiyuki Imaizumi
  • Patent number: 6691991
    Abstract: A shock absorber comprising: a cylinder body has a piston rod movably received therein, a shock absorbing spring is mounted to the cylinder body and biased between the piston rod and the cylinder body, a buffering spring is mounted to an end of the piston rod in the cylinder body and biased between the inner edge of the cylinder body and the end of the piston rod.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: February 17, 2004
    Inventor: Tan-Cheng Huang
  • Publication number: 20030230836
    Abstract: A device for reducing the resonant vibrations of a helical valve spring of an internal combustion engine includes a member, such as a tension cable, attached between one end of the spring and a coil mid-section of the spring for limiting the movement of the coil mid-section away from the one end of the spring to about the distance between the coil mid-section and the one end of the spring when the spring is in a condition corresponding with a condition at which the spring is in static equilibrium.
    Type: Application
    Filed: June 18, 2002
    Publication date: December 18, 2003
    Inventors: Frank H. Speckhart, Brian David Mongold, Hyunjun Chun, Von M. Tyler
  • Publication number: 20030189277
    Abstract: A pressure cylinder for a hydraulic actuation device in motor vehicles includes a housing (1) with an internal cylinder (2,3). A piston (6) is displaceable in the internal cylinder for forming a pressure space (12) for a hydraulic fluid. The piston includes a hemispherical socket (10) in an indentation (9). A spring (18) is arranged in the pressure space (12), and a tappet (7) is connected by a transmission part with a hemispherical cap (8). The tappet (7) is in a frictional and swivelable engagement in the socket (10) in an indentation (9) by the force of the spring (18). The piston is a deep-drawn, cup-shaped part and includes a filling piece (13) in the interior of the piston (6). An annular space (15) is disposed at a piston surface (14) facing toward the pressure space (12). The annular space (15) is for receiving the spring (18) in a compressed state when the piston (6) is in a top dead center position.
    Type: Application
    Filed: March 28, 2003
    Publication date: October 9, 2003
    Applicant: ZF Sachs AG
    Inventors: Ralf Koberstein, Klaus Reuter, Klaus Krappmann
  • Patent number: 6550755
    Abstract: A coil spring (1) and support bearing (2) arrangement for suspension struts (3) with a shock absorber, supporting a steering knuckle of an automobile has a rolling-contact bearing (7), with an axis (x); a receiving body (6), arranged below the rolling-contact bearing (7) in which the rolling-contact bearing is inserted; and a coil spring (1). The coil spring (1) has a force application line (f), which is offset relative to the axis (x) of the rolling-contact bearing (7) at an angle (a). The coil spring (1) has a first portion (8), which, starting from the winding end (17), winds around the receiving body (6). The first portion (8) abuts the receiving body (6). The winding end (17) of the coil spring (1) is arranged in the area of the plane E1 formed by the force application line (f) and the axis (x).
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: April 22, 2003
    Assignees: INA Walzlager Schaeffler OHG, Muhr und Bender KG
    Inventors: Herbert Ehrhardt, Ulrich Grau, Gerhard Meyer, Alexander Zernickel, Vladimir Kobelev, Markus Röhling
  • Patent number: 6460835
    Abstract: Provided is a wheel suspension system (4) and a spring (6, 16, 26) therefor which can improve the ride comfort of the vehicle by reducing the sliding resistance between the cylinder and the piston of the tubular shock absorber (5) surrounded by the compression coil spring without increasing the size of the suspension system and without complicating the assembly work. The compression coil spring is adapted to produce lateral forces between two ends thereof as the compression coil spring is extended and compressed by forming the coil spring so as to have cyclically varying pitch angle for each turn of the coil wire.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: October 8, 2002
    Assignee: NHK Spring Co., Ltd.
    Inventors: Toshio Hamano, Hirotake Kato, Iwao Shigeoka, Takahiro Nakamura, Toshiyuki Kamakura, Masaya Komazaki
  • Publication number: 20010035601
    Abstract: The present invention is directed to a helical compression spring which is mounted on a vehicle body to be compressed between an upper seat and a lower seat. The spring has a coil axis that is substantially curved at a predetermined radius of curvature in an unloaded state of the spring. A pitch of a lower end coil of the spring is set to tilt the end plane of the lower end coil at a first predetermined angle to the lower seat in the direction for shortening the longitudinal length of the spring at the inside of the curvature, and/or a pitch of an upper end coil is set to tilt the end plane of the upper end coil at a second predetermined angle to the upper seat in the direction for shortening the longitudinal length of the spring at the outside of the curvature. The coil axis of the spring may be substantially curved in accordance with at least two radiuses of curvature in the unloaded state of the spring.
    Type: Application
    Filed: June 28, 2001
    Publication date: November 1, 2001
    Applicant: CHUO HATSUJO KABUSHIKI KAISHA
    Inventors: Toshiyuki Imaizumi, Toshiho Aoyama, Shuji Kamiya, Takashi Gotoh, Koichi Irie
  • Patent number: 6308974
    Abstract: A suspension system 10 has one or more protrusive seating portions 21L;22L, on which a coil spring 13 is situated, and is formed in a partly circumferential portion of a spring seat 14L supporting the coil spring 13, and a tapered surface 23L for preventing body warp or bending of the coil spring 13 in a circumferential portion of at least one protrusive seating portion 22L.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: October 30, 2001
    Assignee: Showa Corporation
    Inventors: Kenji Hashirayama, Yoshihisa Nakamura
  • Patent number: 6293533
    Abstract: A dashpot for wheel suspensions, with a preferably sheet-metal spring cup (6). The cup is attached to a shock absorber or its accommodating tube, supports a helical spring that surrounds the shock absorber or tube, and can be advanced along the shock absorber or tube on threads. To allow the dashpot to be raised and lowered in precise increments, the attachment is maintained tight by a cylindrical housing (3). The housing is provided with a slot extending over its total length and with outside threads. Its inner surface of the housing rests directly against the shock absorber or its tube. The housing operates in conjunction with a height-adjustment ring (12) or neck (7) with matching inside threads on the spring cup. The slope of the threads ensure that the force exerted by the spring on the spring cup will squeeze the slotted housing together radially.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: September 25, 2001
    Assignee: Krupp Bilstein GmbH
    Inventor: Thomas Sasse
  • Publication number: 20010007383
    Abstract: A torsional vibration damper for a hydrodynamic clutch device particularly for coupling a turbine wheel hub with a turbine wheel shell and/or for coupling a lockup clutch arrangement with a turbine wheel, includes a primary side and a secondary side which is rotatable about an axis of rotation with respect to the primary side against the action of a damper element arrangement. A radial bearing arrangement is arranged for radially supporting the primary side and secondary side with respect to one another. For this purpose, the radial bearing arrangement is arranged radially outside of the damper element arrangement.
    Type: Application
    Filed: January 12, 2001
    Publication date: July 12, 2001
    Applicant: Mannesmann Sachs AG
    Inventor: Herbert Schmid
  • Patent number: 6237901
    Abstract: A suspension for a vehicle wheel includes at least one helicoidal spring and at least one flexible retaining and connecting armoring, which in working position, stresses a portion of the spring by maintaining it compressed to obtain two different stiffness curves.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: May 29, 2001
    Assignee: Mauro Bianchi S.A.
    Inventor: Mauro Bianchi
  • Patent number: 6217012
    Abstract: In a spring seat fixing structure of a hydraulic shock absorber (10), a proximal end side of a cap (44) is provided with a small diameter force-fit portion (71) which is fixedly forced into a small outer diameter portion (51) of a damper tube (11), and a distal end side of the cap (44) is provided with a large diameter force-fit portion (73) which is fixedly forced into a large outer diameter portion (52) of the damper tube (11).
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: April 17, 2001
    Assignee: Showa Corporation
    Inventor: Kenji Hashirayama
  • Patent number: 6076841
    Abstract: In order to simplify mounting a coil spring to a vehicle body, a connecting device, which connects a spring bracket to the vehicle body, is disposed at an inner circumferential portion of the coil spring. This eliminates the problem that the spring bracket needs a space for connecting to the vehicle body about an outer circumference of itself.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: June 20, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masaharu Satou, Yutaka Hozumi