Coil Patents (Class 267/155)
  • Patent number: 6823972
    Abstract: A spring clutch has an arbor, a spring, and a sleeve. The spring at least partially surrounds the arbor and has a first portion coupled to the arbor to confine relative rotation of the first portion and arbor about an axis. The sleeve at least partially surrounds the spring and cooperates with the spring. The cooperation is sufficient so that an initial relative rotation between the arbor and sleeve in a first direction about the axis tends to uncoil the spring and bias the spring into firmer engagement with the sleeve. The cooperation is sufficient such that relative rotation in an opposite direction tends not to uncoil the spring and maintains the clutch in a disengaged condition.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: November 30, 2004
    Assignee: Sikorsky Aircraft Corporation
    Inventor: Yuriy Gmirya
  • Publication number: 20040154891
    Abstract: A spring clutch has an arbor, a spring, and a sleeve. The spring at least partially surrounds the arbor and has a first portion coupled to the arbor to confine relative rotation of the first portion and arbor about an axis. The sleeve at least partially surrounds the spring and cooperates with the spring. The cooperation is sufficient so that an initial relative rotation between the arbor and sleeve in a first direction about the axis tends to uncoil the spring and bias the spring into firmer engagement with the sleeve. The cooperation is sufficient such that relative rotation in an opposite direction tends not to uncoil the spring and maintains the clutch in a disengaged condition.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventor: Yuriy Gmirya
  • Patent number: 6763915
    Abstract: A winding stem (10) is connected to an inner end (11a) of a mainspring (11), and an outer end (11b) of the mainspring (11) is connected to a barrel drum (12). A braking plate (15) is placed inside a braking case (14), and the braking case (14) is filled with a fluid (16). An uneven joint portion (10b) is formed at the lower end of the winding stem (10), and is engaged with an uneven joint portion (15b) of the braking plate (15) placed in the braking case (14). By adopting the above configuration which can simplify the structure of the mainspring mechanism having the braking plate and which can reduce the number of components, the size and production cost of the mainspring mechanism can be reduced.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: July 20, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Shoichi Nagao, Eiji Morikuni, Taro Matsunaga
  • Patent number: 6709056
    Abstract: A preloaded spring arrangement, in particular for spring loading office chair synchronizing mechanisms, comprises a pair of leg springs, which are coaxially positioned on a common axis, each having a supporting leg and a positioning leg; and a preferably manually operated adjusting unit of the type of an eccentric, which the two positioning legs are coupled with and by which they are displaceable for adjustment of the preload of the spring arrangement; wherein, for stepwise locked spring load adjustment, the adjusting unit of the type of an eccentric comprises a pair of eccentric cams sitting axially side by side, the cam surfaces of which, related to the direction of rotation of the eccentric arrangement, successively comprise plane locking sections, eccentric cam control sections and holding sections that are concentric of the axis of rotation of the eccentric arrangement; and wherein the respective locking, cam control and holding sections of the two eccentric cams are offset in the direction of rotation o
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: March 23, 2004
    Assignee: Bock-1 GmbH & Co.
    Inventor: Hermann Bock
  • Patent number: 6647960
    Abstract: An electronic throttle body uses a spring and an insert to generate a force tending to oppose the motion of opening a throttle. The insert locates and centers the coils of the spring and also acts during assembly to place the proper amount of torsion on the spring and the throttle body system. Once a throttle body motor or other force ceases to exert force against the spring, the spring causes the throttle to close.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: November 18, 2003
    Assignee: Visteon Global Technologies, Inc.
    Inventors: James R. Rauch, Fred Barnes, Scott A. Sapp, Thomas R. Goodhue, Walter E. Root, II, Gene C. Price
  • Patent number: 6631954
    Abstract: A vehicle seat has a back mounted to pivot on a seat proper by a locking mechanism, and urged forwards by a torsion bar formed by a metal wire which has two ends fixed respectively to the back and to the seat proper. The metal wire constituting the torsion bar forms at least one spiral comprising a plurality of adjacent turns.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: October 14, 2003
    Assignee: Faurecia Siege d' Automobile S.A.
    Inventors: David Amorin, Yves Geoffroy
  • Patent number: 6619638
    Abstract: A supplementary spring assembly (104) is fitted to three consecutive turns (86.1, 86.2, 86.3) of a vehicle suspension coil spring (102). The spring assembly (104) includes a central torsion-producing portion (105) having a pair of half-turn torsion springs (106, 108). The half-turn torsion springs (106, 108) are connected to each other by a C-shaped bight portion (109) which engages an intermediate turn (86.1) of the coil spring (102) in a clamping fit. First and second arms (110, 112) extend from opposite ends of the torsion springs (106, 108) and pass slidably through complemental apertures (114) formed in mounting blocks (116). The mounting blocks (116) include a clamping arrangement in the form of a C-shaped recess formed in the block (116) which is sized to fit around non-adjacent turns (86.2, 86.3) of the coil spring (102).
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: September 16, 2003
    Inventor: William Wilfred Spencer
  • Patent number: 6615897
    Abstract: An apparatus for winding a spring on a shaft, such as for counterbalancing a roll-up door, includes a housing that carries a transmission which is positionable over the shaft. The transmission is configured to be coupled via a connector to one end of the spring, while the other end of the spring is fixed to the shaft. Rotation of the transmission results in a turning of the connector and a winding and/or elongation of the spring.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: September 9, 2003
    Assignee: Industrial Door Company, Inc.
    Inventor: Edward Dorma
  • Publication number: 20030151180
    Abstract: An energy absorber comprises a helically coiled stores of at least partially yielding material that is drawn over a roller, or two rollers on perpendicular rotational axes, and securely fixed to a base that is attached to fragile structure such as a roof so that when an external force of sufficient size is applied to the roller or rollers through a connecting attachment eye the coil together with roller or rollers moves away from the attachment to the base whilst the coiled material is deployed over the roller or rollers. The absorber may be housed in a casing that is fixed to the base such that the strength of the fixing to the base is sufficient to withstand a pre-determined load after which the fixing fails and the housing moves with the coiled store providing protection for both the coiled store and fragile structure.
    Type: Application
    Filed: March 25, 2003
    Publication date: August 14, 2003
    Inventor: Julian Renton
  • Patent number: 6575531
    Abstract: A reclining chair comprises a telescopic tube assembly connected to a seat for adjusting the inclination of the seat and a backrest, and a lock unit mounted on the telescopic tube assembly for locking releasably an inner tube against an outer tube of the telescopic tube assembly. The lock unit includes a torsion spring which has a coiled portion tightly sleeved around the inner tube to lock it against the outer tube adjacent an opening provided on the outer tube, and two arms extending out of the outer tube through the opening from two ends of the coiled portion. An operating unit is connected to the arms for moving the arms so as to unwind the coiled portion and unlock the inner tube, thereby the seat may be pushed forwardly or rearwardly.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: June 10, 2003
    Assignee: Shin Yeh Enterprise Co., Ltd.
    Inventor: Chuen-Jong Tseng
  • Patent number: 6553623
    Abstract: A spring door opener comprising for a helical torsion spring coil body with two legs extending therefrom. One of the legs contains two substantially 90-degree bends such that the legs are configured to exit the coil body on the same side. The door opener is attached to the hinge pin on a door hinge to maintain a door in an open position.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: April 29, 2003
    Inventor: Michael W. Long
  • Patent number: 6527264
    Abstract: A torsion spring which is coiled or wound from spring steel wire is provided for counterbalancing weight, particularly in sectional doors. At least one of the two spring ends of the torsion spring has a connection diameter which is reduced with regard to the operational diameter of the torsion spring in a main portion between the spring ends. This connection diameter is adjusted to the outer diameter of a shaft on which the torsion spring is to be arranged in such a way that the torsion spring is guided on the shaft in a radial direction by means of any portion of the torsion spring having the connection diameter.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: March 4, 2003
    Inventor: Bernt Schroer
  • Patent number: 6508461
    Abstract: Disclosed herein is an improved arrangement for the operation of an overhead garage door that comprises an adapter utilized for installation and periodic maintenance of the support arrangement. Also disclosed is an adapter for use with existing garage door structures, improved wrenches for use in tensioning coil springs usually found in such arrangements and a method for tensioning such coil springs when they are originally installed or during periodic maintenance of the springs. The adapter comprises a body that may be mounted upon a rotatable shaft that supports the coil springs and be non-rotatabley attached to an end of the coil spring and the rotatable shaft. The attachment to the shaft is a releasable connection and the body has splines or projecting abutment surfaces so that two of the improved wrenches according to the present invention may have their jaws closely surround and engage the splines on the body.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: January 21, 2003
    Assignee: Safe Ratch, Inc.
    Inventors: Thomas P Trevorrow, Ben D. Yoder, Albert E Zuccolotto, Thomas P Trevorrow, Jr.
  • Patent number: 6485006
    Abstract: A plug mounted at one end of a torsional spring operatively connected to an overhead shaft of a counterbalancing mechanism of a garage door, wherein the plug comprises projecting interlocking means able to cooperate with corresponding matching means of a mating part of the counterbalancing mechanism, so that when the interlocking means of the plug are inserted into the corresponding matching means and when tension is applied to the torsional spring, the interlocking means interlock with said matching means of the mating part, thereby preventing the plug from being readily removed therefrom. The projecting interlocking means thus act as safety means because they provide an automatic locking mechanism which make the plug operate as a safety device as well.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: November 26, 2002
    Assignee: Canimex Inc.
    Inventors: Michel Beaudoin, Pierre-Louis Foucault, Luc Bourassa, Gérard Dubé, Martin Harnois
  • Patent number: 6450062
    Abstract: The friction damper includes a hollow cylindrical member having an axially movable non-rotational member within the cylindrical member. A spring is disposed between the movable and cylindrical members. A rotating member lies within the cylindrical member in opposition to the movable member. A frictional resisting element resists relative rotation of the rotating member and the cylindrical member and causes the movable member to move axially away from the rotating member against the bias of the spring to increase the spring force of the spring and the frictional resisting force.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: September 17, 2002
    Assignee: Oiles Corporation
    Inventors: Masamitsu Kojima, Yoshiteru Igarashi
  • Publication number: 20020003328
    Abstract: A torsion spring which is coiled or wound from spring steel wire is provided for counter-balancing weight, particularly in sectional doors. At least one of the two spring ends of the torsion spring has a connection diameter which is reduced with regard to the operational diameter of the torsion spring in a main portion between the spring ends. This connection diameter is adjusted to the outer diameter of a shaft on which the torsion spring is to be arranged in such a way that the torsion spring is guided on the shaft in a radial direction by means of any portion of the torsion spring having the connection diameter.
    Type: Application
    Filed: July 9, 2001
    Publication date: January 10, 2002
    Inventor: Bernt Schroer
  • Publication number: 20010022113
    Abstract: A friction damper includes: a hollow cylindrical member with a bottom; a movable member disposed in said hollow cylindrical member in such a manner as to be movable in an axial direction of said hollow cylindrical member but immovable about an axis of said hollow cylindrical member; a coil spring disposed between said movable member and the bottom of said hollow cylindrical member, one end of said coil spring abutting against the bottom of said hollow cylindrical member and another end thereof abutting against said movable member; a rotating member disposed in said hollow cylindrical member in such a manner as to oppose said movable member and to be relatively rotatable about the axis of said hollow cylindrical member; and a frictionally-resisting-force generating mechanism for generating a frictionally resisting force to the relative rotation of said rotating member with respect to said hollow cylindrical member, and for causing said movable member to move away from said rotating member in the axial directio
    Type: Application
    Filed: April 9, 2001
    Publication date: September 20, 2001
    Applicant: OILES CORPORATION
    Inventors: Masamitsu Kojima, Yoshiteru Igarashi
  • Patent number: 6240801
    Abstract: A friction damper includes: a hollow cylindrical member with a bottom; a movable member disposed in said hollow cylindrical member in such a manner as to be movable in an axial direction of hollow cylindrical member but immovable about an axis of hollow cylindrical member; a coil spring disposed between movable member and the bottom of hollow cylindrical member, one end of said coil spring abutting against the bottom of hollow cylindrical member and another end thereof abutting against movable member; a rotating member disposed in hollow cylindrical member in such a manner as to oppose movable member and to be relatively rotatable about the axis of hollow cylindrical member; and a frictionally-resisting-force generating mechanism for generating a frictionally resisting force to the relative rotation of rotating member with respect to hollow cylindrical member, and for causing movable member to move away from rotating member in the axial direction against the resiliency of coil spring and to approach the botto
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: June 5, 2001
    Assignee: Oiles Corporation
    Inventors: Masamitsu Kojima, Yoshiteru Igarashi
  • Patent number: 6220586
    Abstract: A multiple torsion spring assembly according to the present invention may be provided with a coiled helical torsion spring. The spring has first and second end coils, and a plurality of intermediate coils between the first and second end coils. The first end coil inner diameter is less than the inner diameter of the intermediate coils. The second end coil inner diameter is less than the inner diameter of the first end coil. The spring may be used to control a throttle return of a throttle body. Methods of manufacturing spring assemblies are also disclosed.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: April 24, 2001
    Assignee: Precision Products Group
    Inventors: Robert J. Pavlin, Todd K. Watkins, Gary T. Wehnes, Curt A. Converse, James E. Adams
  • Patent number: 6112712
    Abstract: A motorcycle engine comprising an engine housing, a crankshaft mounted for rotation within the housing, a camshaft mounted for rotation within the housing, a flexible element (e.g., a chain) coupling the camshaft to the crankshaft, and a tensioner mounted adjacent the flexible element. The tensioner includes a support member, a shoe made of a polyimide polymer (e.g., Vespel), and a biasing member biasing the support member so that the shoe is in contact with the flexible element. The biasing member is made from a wire having a quadrangular (e.g., square) cross section. Preferably, the camshaft is supported by a cam support plate, and the support member is pivotally mounted to the cam support plate.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: September 5, 2000
    Assignee: Harley-Davidson Motor Company
    Inventors: David A. Safarik, Jeffrey P. Coughlin, Marc D. McAllister
  • Patent number: 6056280
    Abstract: A lift spring assembly is disclosed for small computers and similar electronic devices of the type that has a base and an upper component assembly that raises when a release is pressed to provide access to computer devices such as printing, data storage and other devices mounted in the assembly. The lift spring is a closed linkage that is held into the base between supports and stops so that the assembly may be removed for service without disconnecting or otherwise disassembling the lift spring mounting.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: May 2, 2000
    Assignee: International Business Machines Corporation
    Inventors: Edward Nela Dials, Aubrey Lamond Hodges, Steven Richard Luglan
  • Patent number: 6032760
    Abstract: An actuator for power door locks having a bi-directional spring holder assembly. The assembly has a substantially cylindrical housing having a projection formed on a rim of its cylindrical wall. The projection is provided with first and second abutments facing in opposite directions along the circumference of the rim. A spring is mounted around a shaft which passes through a longitudinal axis of the housing. A first, internal spring end is engaged to the shaft while a second, external spring end projects radially outward of the cylindrical wall. The assembly also includes a spring cover provided with a cover abutment which similarly projects radially outward of the cylindrical wall. When the holder assembly is assembled, the spring is coiled and the cover abutment pushes against the projection's first abutment while the external spring end pushes against the second abutment.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: March 7, 2000
    Assignee: Atoma International, Inc.
    Inventor: Gregory A Jorgensen
  • Patent number: 6015142
    Abstract: A spring module having a shaft movable in first and second directions and a biasing element for urging the shaft into a normal position upon loss of power. The spring module also includes motion limiting means for limiting the deenergization of the biasing element and a speed reduction apparatus intercoupling the motion limiting means and the shaft. The biasing element is energized upon movement of the shaft in the second direction and deenergized by shaft movement in the first direction. Similarly, the motion limiting means are coupled to the shaft for movement in third and fourth directions. The speed reduction apparatus moves the motion limiting means at a slower rate in the third and fourth directions than the shaft moves in the first and second directions.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: January 18, 2000
    Assignee: Johnson Controls, Inc.
    Inventor: Dennis J. Ulicny
  • Patent number: 5926935
    Abstract: A torsion spring having a central coiled portion and a pair of resilient arms projecting from the coiled portion in different directions is incorporated in a workpiece so that the coiled portion is fitted on a support pin on the workpiece and the arms are engaged with first and second engagement portions on the workpiece. A center pin is inserted into the coiled portion of the torsion spring, and the coiled portion is held by attraction of an attracting portion provided around the center pin. A pair of forming pins are moved relative to the center pin in directions perpendicular to the longitudinal axis of the center pin to abut against the respective arms of the torsion spring and deflect them.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: July 27, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Mizuta, Mitsuyoshi Okiyama
  • Patent number: 5803812
    Abstract: A flexible shaft structure comprises: a core wire having flexibility; holding portions provided on the core wire; a first wire wound around the core wire substantially at right angles with respect to an axial line of the core wire; and a second wire which is spirally wound around the first wire and of which both ends are respectively fixed to the holding portions. Accordingly, when an input-side holding portion rotates about a shaft, the rotational torque is transmitted to an output-side holding portion by the second wire. In this case, since the second wire is wound around the first wire wound around the core wire, the winding diameter of the second wire for transmitting rotational torque can be enlarged. As a result, tensile force acting on the second wire becomes smaller and stress acting on the core wire via the first wire or the holding portions accordingly becomes smaller.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: September 8, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Eisaku Kakiuchi, Tadao Ota, Yoshikazu Kameda, Masahiko Asano
  • Patent number: 5799760
    Abstract: An energy absorbing device for safely arresting moving bodies. Applications of the device include fall protection systems that protect workers on elevated structures from accidental falls. The energy absorbing device includes a coiled strip capable of dissipating energy when a tensile force applied across the device generates an internal bending strain that exceeds the elastic limit of the material. The tensile load developed on the safety track during an accidental fall unwinds the strip, thus progressively taking-up the kinetic energy of the moving body.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: September 1, 1998
    Inventor: Gregory E. Small
  • Patent number: 5799931
    Abstract: A coil spring (10) for an overrunning spring clutch assembly wherein the coil spring (10) includes a crossover coil (20) having a longitudinal crossover gap (24) formed therein, and a dynamic balance weight (40) secured in combination with one of the internally opposed surfaces (24s) of the longitudinal crossover gap (24). The dynamic balance weight (40) is configured such that, when assembled in combination with a central arbor (32) and coaxial clutch members (34) of the overrunning spring clutch assembly, the dynamic balance weight (40) is spaced apart from the central arbor (32) and each of the clutch members (34). Furthermore, the dynamic balance weight (40) is fabricated from a material having a density .rho..sub.BW which is greater than the density .rho..sub.CC of the base material from which the crossover coil (20) is fabricated.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: September 1, 1998
    Assignee: Sikorsky Aircraft Corporation
    Inventor: Jules G. Kish
  • Patent number: 5711568
    Abstract: A retractable cover for a vehicle cargo area includes a roller containing a bungee cord, operative as a retraction mechanism. The covers are fabricated of an opaque cloth or vinyl material, or a transparent or screen material. The covers may be deployed longitudinally across the cargo area, or vertically towards the top of the vehicle. A housing may enclose multiple rollers and provide openings to deploy the covers. The retractable cover is simple and inexpensive, and provides multiple capabilities for varying users' needs.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: January 27, 1998
    Inventors: D.W. Diem, Roberto Anama
  • Patent number: 5695176
    Abstract: A torsional vibration damper with an essentially cup-shaped hub ring made of metallic material, an annular casing and a rotating ring. The hub ring and annular casing and the rotating ring are spaced from one another by a radial clearance and are joined in a torsionally flexible manner by a spring element made of elastomeric material. The spring element is arranged in the opening formed by the clearance. The casing of the hub ring is provided at least radially externally with an adhering first coating made of thermosetting plastic, which coating may have a pulley-type of surface profiling. The first coating may be reinforced with fibers for dimensional stability, and the second coating may expand and contract with temperature variations to ensure constant prestressing in the spring element.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: December 9, 1997
    Assignee: Firma Carl Freudenberg
    Inventor: Terry Colford
  • Patent number: 5671636
    Abstract: The present invention relates to an apparatus for preventing circumferential separation between the meshing teeth of a first gear and a second gear of a gear train. Exemplary embodiments of the invention include a first torque transmitting gear coaxially fixed to the first gear, a second torque transmitting gear in meshing engagement with the first torque transmitting gear, a third torque transmitting gear in meshing engagement with the second torque transmitting gear, and being rotatable about a shaft fixedly connected to a fourth torque transmitting gear which in turn is in meshing engagement with the second gear. The third torque transmitting gear is drivingly connected to the shaft via a pre-loaded resilient element formed by a first torsion spring and a second torsion spring. In an exemplary embodiment, the torsion springs are arranged such that windings of the first torsion spring are located within spaces formed between adjacent windings of the second torsion spring.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: September 30, 1997
    Assignees: Heidelberg Harris Inc., Heidelberger Druckmaschinen AG
    Inventors: Daniel Paul Gagne, Bryan Charles Dustin
  • Patent number: 5642875
    Abstract: A coil spring wherein the external surfaces of the convolutions have cylindrical major portions and flats which abut the neighboring convolutions when a spring is compressed flat under load. This reduces the likelihood of radial displacement of one or more convolutions under load and the likelihood of a reduction of the axial length of the coil spring when in its unstressed condition subsequent to being repeatedly compressed flat under load. The external surface of each convolution can be provided with one or two flats, and the planes of the two flats preferably make a small acute angle if the coil spring is caused to assume an arcuate shape when in actual use.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: July 1, 1997
    Assignee: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Albert Albers, Robert Felger
  • Patent number: 5630574
    Abstract: Interference between a spring and a shaft is prevented in a torque shock absorber device which uses a coil spring. The torque shock absorber device has a shaft which is fixed on a base plate, and a sleeve is installed which is free to rotate against the shaft. On the sleeve, a torque transmission part is installed. One end of the coil spring is inserted and fixed in a slot of the shaft. The coil spring is wound on a peripheral part of the shaft and sleeve, and the other end is fixed on the torque transmission part. When torque is applied on the torque transmission part, the sleeve is rotated with the wound coil spring and no friction is generated between the sleeve and shaft.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: May 20, 1997
    Assignee: Jamco Corporation
    Inventor: Ryoichi Itakura
  • Patent number: 5595275
    Abstract: A compact torsion spring assembly is functionally disposed between a first member and a second member. The first member is rotatable relative to the second member and has a first spring engagement notch therein. A bracket fixed relative to the second member has a second notch therein. A tension spring is formed as a continuous coil of steel wire, defining an enlarged diameter first catch plate portion at a first end and a second catch plate portion at a second end. The spring is disposed between the first member and the second member, with the first catch plate portion engaging the notch in the first member and the second catch plate portion engaging the notch in the bracket, wherein the spring rotatively biases the first member relative to the the second member.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 21, 1997
    Assignee: Dana Corporation
    Inventors: Daniel V. Gochenour, Barry T. Adams, Martin E. Kumner, Christopher M. Davis, Steven D. Lepard, Michael L. Bassett, Kevin F. Schlosser
  • Patent number: 5562275
    Abstract: A flexible spindle suitable for transmitting a torque as well as an axial thrust is constituted by a plurality of helical spirals of wire all of the same length. Each spiral has opposite winding directions to the winding direction of the adjacent spirals and the outer diameter of each spiral is equal to the inner diameter of the spiral which surrounds it. The terminal ends of the spirals are assembled integrally with each other and with the terminal ends of a flexible member situated inside the innermost spiral. Each sprial has a length which is equal to that of the other spirals as measured along their axis when these are in their bent operating position and under those conditions under which they are designed to transmit torque and thrust, with the flexible spindle resulting not to be radially or longitudinally deformable when under stress, thus transmitting the forces without loss.
    Type: Grant
    Filed: July 11, 1995
    Date of Patent: October 8, 1996
    Assignee: Hawe Neos Dental Dr. H. v. Weissenfluh AG
    Inventors: Hans v. Weissenfluh, Beat A. v. Weissenfluh
  • Patent number: 5558315
    Abstract: A foundation spring module especially adapted for easy assembly in an interlocking spring and grid bedding foundation structure has a short generally vertical section which extends down from an interlockable wire grid-engaging horizontal top portion to position an upper end of each of two contiguous legs of the spring away from the area of intersection of the top portion and legs of the spring with the wire grid to greatly ease manipulation and assembly of the spring into the interlocked position in the wire grid of the foundation structure.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: September 24, 1996
    Assignee: Ohio Mattress Licensing and Components Group
    Inventors: Eugen Constantinescu, Robert F. Wagner
  • Patent number: 5529296
    Abstract: A pedal return device is provided for controlling operation of a pedal member. In particular, the pedal return device imparts a resistive force which resists movement of the pedal member. In the case of an automobile accelerator pedal, this feature allows the driver to more easily maintain a given level of pedal actuation. However, the resistive force is made dependent on whether the pedal member is actually being depressed. Accordingly, once a force applied to the pedal member is removed, the resistive force is correspondingly and assuredly eliminated to permit the pedal member to be reliably returned to an initial rest position by a restoration force generating device provided.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: June 25, 1996
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yasunari Kato, Hiroaki Yamaguchi, Kazuomi Ota
  • Patent number: 5464197
    Abstract: A helical torsion spring is provided having an adjustable spring rate. The torsion spring includes a main spring formed from a coil of wire having a first end and a second end. The wire extends away from the first end to form a first arm and away from the second end to form a second arm. The main spring is loaded torsionally by angular displacement of the first arm with respect to the second arm about a central axis passing through a geometric center of the coil. An inside diameter of the coil defines a core. An adjustment spring is oriented within the core. The adjustment spring is formed from adjustment spring wire configured in a manner similar to that of the main spring. The adjustment spring exhibits an exterior diameter not less than the inside diameter of the main spring. The adjustment spring is rotatable to threadably adjust a proportion of the core of the main spring that includes the adjustment spring therein.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: November 7, 1995
    Inventor: George Ecclesfield
  • Patent number: 5386165
    Abstract: In order to be able to completely eliminate the axial play of an armature spindle of an electric motor, especially for a windshield wiping system of a motor vehicle, even though conditions change over time, a prestressing member acted upon by a spring leg continuously presses against the end of the armature spindle. The prestressing member does not necessarily have to abut directly on the end of the armature spindle, but rather a cap is inserted onto the end of the armature spindle and non-rotatably fixed to the motor housing or a gear housing. An eccentric formed as the housing of the prestressing member abuts on the outside of the bottom of the cap. In an alternative embodiment, a mushroom shaped prestressing member having a mushroom head presses against the end of the armature spindle.
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: January 31, 1995
    Assignee: SWF Auto-Electric GmbH
    Inventors: Rainer Bruhn, Bernd Walther
  • Patent number: 5370586
    Abstract: There is provided a belt tensioning apparatus for maintaining the tension in the belt of a serpentine belt drive system. The belt tensioning apparatus utilizes a double wrap spiral spring which will approximately double the amount of travel of the tensioning apparatus for a given outside diameter. This significant increase in travel allows the tensioning device to be preset at a variety of initial loads to enable the same tensioner to be used over a broad range of applications.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: December 6, 1994
    Assignee: Hasco Spring Industries, Inc.
    Inventors: H. Jay Thomsen, William Ordo
  • Patent number: 5368283
    Abstract: A torsion spring assembly particularly adapted for use in closing the throttle valve of an automotive throttle body. The assembly includes two bushings formed with sleeves adapted to telescope into the end portions of a torsion spring. As an incident thereto, the bushings automatically interlock with one another to hold the bushings and the spring in assembled relation.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: November 29, 1994
    Assignee: Precision Products Group, Inc.
    Inventor: Robert J. Pavlin
  • Patent number: 5351941
    Abstract: A constant force spring system having a coil spring with first and second arms, a ramp for the second arm to contact and a pin mounted on a base. The coil spring is mounted on the pin and the ramp is positioned such that the second arm of the spring contacts the sloped surface of the ramp. When a force is applied to the first arm of the spring it tends to move the second arm up the sloped ramp. This interaction of the second arm and sloped surface produces a reaction force. The slope angle and ramp configuration is configured such that there are equal and opposite forces produced by the spring system.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: October 4, 1994
    Inventor: Paul C. Hwang
  • Patent number: 5341907
    Abstract: A centrifugal clutch includes a spring consisting of a single wire member and adapted to hold a pair of clutch shoes in mutual relation to each other. With this simple structure, the centrifugal clutch helps to facilitate the production, assembly, etc. thereof and reduce the vibrations and noise during its operation. The spring, which consists of a single spring wire member, includes a pair of ring-shaped sections and a pair of clutch shoe holding sections extending in parallel each other and in opposite directions from each of the ring-shaped sections.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: August 30, 1994
    Assignee: Kioritz Corporation
    Inventors: Yoetsu Yokocho, Fujio Kobayashi
  • Patent number: 5320333
    Abstract: The spring has an intermediate helical portion with a U-shaped open hook at each end. The helical portion is disposed in the region of the pivot of the wiper support arm to the base part which holds the support arm. One hook wraps around the wiper support arm, passing over and hooking underneath the same and the other hook wraps around the base part, passing underneath and hooking on the top of said base part. The spring greatly increases the wiper pressure on the windshield. The spring remains properly hooked even when the support arm is pivoted away from the windshield.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: June 14, 1994
    Inventor: Jean Koch
  • Patent number: 5289732
    Abstract: A column-mounted shift control assembly includes an integral gate and mounting bracket, a shift lever unit rotatably mounted on the bracket, a shift handle pivotally mounted on the shift lever unit, and resilient means for urging the terminal end of the shift handle toward the bracket. The latter includes a planar gate portion having detents formed on an edge thereof for selective cooperation with the shift handle terminal end to select a desired transmission shift position.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: March 1, 1994
    Assignee: Chrysler Corporation
    Inventor: William M. Snell
  • Patent number: 5209461
    Abstract: A torsional spring 10 includes an outer cylinder 12 connected to a central hub 14 through a series of elastomeric spokes 16-30. The elastomeric spokes 16-30 extend from the inner periphery of the cylinder 12 to the hub 14 substantially along a line tangential to the central hub 14. Further, each of the elastomeric spokes 16-30 includes first and second radial segments wherein the first radial segment is adjacent the hub 14 and has an elastic modulus that is lower than the second radial segment.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: May 11, 1993
    Assignee: LTV Energy Products Company
    Inventor: Gary L. Whightsil, Sr.
  • Patent number: 5201897
    Abstract: An improved spring balancer (10) includes a shaft (13) rotatably mounted on a support (11). A first torsional spring (14) acts between the support and the shaft. A second torsional spring (19) acts between the support and a cable drum assembly (63) journalled on the shaft. A third spring (23) acts between the support and another cable drum assembly (26). A fourth cable drum (28) is fixed to the shaft. Four cables (141,142,143,144) are associated with the various cable drums (140,63,26,28) and are connected to a roll-up door (12). When the door is lowered, the various springs will absorb energy. When the door is raised, the various springs will give up energy.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: April 13, 1993
    Assignee: Whitling Roll-Up Door Mfg. Corp.
    Inventor: Lauren C. Whiting
  • Patent number: 5168743
    Abstract: A crimping tool comprises a pair of handles, crimping jaws, dies, and/or die nests, positioned at one end of the handles and in alignment with each other to receive a connector therebetween, a linkage extending between the handles and joining same together such that one handle pivots relative to the other and forces the jaws, dies, and/or die nests toward each other. A spring is positioned between the handles to facilitate the opening movement of the tool. The spring in the present invention is configured with a fracture zone, and is positioned in such a location that the spring is flexed during each cycle of operation. The fracture zone may include one or more coils, and such coils break, after a predetermined number of cycles, to affirmatively indicate to the user that the tool requires inspection and/or servicing. When the spring breaks, the tool may still be manually opened, but only with some difficulty, so that the operator cannot ignore the need for inspection and/or servicing.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: December 8, 1992
    Assignee: Burndy Corporation
    Inventors: Gary E. Schrader, Armand Montminy
  • Patent number: 5167304
    Abstract: The torsion/compression strut spring (60) is disposed about a forked end (54) of a parking brake strut (50) in a drum brake (10). The forked end (54) is received loosely about the web (12A) of an associated drum brake shoe (12) and a parking brake lever (40). The web includes a generally U-shaped recess portion (12B) which is sized to seat fixedly one oval-shaped end portion (64) of the spring. The spring (60) has oppositely disposed oval-shaped end portions (62, 64) which, in a disassembled and at-rest position, have longitudinal centerlines located 90.degree. apart relative to one another. When the spring (60) is assembled on the parking brake strut (50), the one end portion (64) seats fixedly within the recess portion (12B) and the other end (62) engages the strut (50) so that the spring (60) exerts a torsional force upon the strut (50) and causes legs (53, 56) of both forked ends (52, 54 ) of the strut (50) to engage respective sides of the parking brake lever (40) and drum brake shoe web (12A).
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: December 1, 1992
    Assignee: Allied-Signal Inc.
    Inventor: Joseph C. Capek
  • Patent number: 5165507
    Abstract: According to the invention, there is provided a damper for a flapdoor that does not show any damping effect when its movable shaft of the damper is rotated with the door in one sense whereas it effectively damps the rotary movement of the flapdoor when the movable shaft is rotated with the door in the other sense, wherein a one-way clutch for engaging or disengaging the movable shaft with a movable member depending on the sense of rotation of the movable shaft to cause a viscous shearing drag in the viscous fluid contained in the damper and a power source constitute so many integral parts of a coil spring. A damper for a flapdoor having such an arrangement can have a simplified configuration as compared with a damper provided with a separate coil spring as power source and a separate one-way clutch and therefore can be realized with reduced dimensions.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: November 24, 1992
    Assignee: Sugatsune Industrial Co., Ltd.
    Inventor: Kazuyoshi Ohshima
  • Patent number: 5133433
    Abstract: A rotary damper has a hollow cylinder having upper and lower flanges to serve as a pivot. One arm is tightly fitted on one of the upper and lower flanges and extends essentially in a direction tangential to the associated flange. The other arm is pivotal with rotation of the outer pivot and extends essentially in a direction tangential to the outer pivot. A coil spring is wound around the outer periphery of the hollow cylinder. The ends of the coil spring are connected to the arms for exerting spring force in a direction opposite the pivoting direction of the arms.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: July 28, 1992
    Assignee: Nihon Plast Co., Ltd.
    Inventor: Takafusa Oosawa