Glass Fiber Patents (Class 267/149)
  • Patent number: 9707675
    Abstract: A nail gun includes: a shell, a cylinder, a piston, a gear frame, and a stress relaxation device. The cylinder is disposed in the shell. The piston is disposed in the cylinder and includes a piston rod and a piston disc. The gear frame is coated on a front section of a cylinder exterior. The stress relaxation device is disposed in the cylinder. The stress relaxation device includes a first stress relaxation ring, a second stress relation ring and a stress relaxation unit. The first stress relaxation ring and the second stress relaxation ring are both connected with the stress relaxation unit and not in relative movement to the stress relaxation unit.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: July 18, 2017
    Inventor: King Fai Kenneth Kok
  • Patent number: 9677637
    Abstract: A composite coil spring (20) includes a coil body (2) that extends along a coiled axis (24). The coil body includes a core (38) and a plurality of fiber layers (32) impregnated with a polymer material. The plurality of fiber layers are arranged around the core at different radial distances from the coiled axis. Each of the plurality of fiber layers extends around the coiled axis at an oblique fiber angle to the coiled axis. Each of the plurality of fiber layers includes a number of fibers that is a product of a common base number of fibers multiplied by a positive non-zero integer from a set of positive non-zero integers. The positive non-zero integer of at least one of the plurality of fiber layers is different from the positive non-zero integer of at least one other of the plurality of fiber layers.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: June 13, 2017
    Assignee: MITSUBISHI STEEL MFG. CO., LTD.
    Inventor: Jun Yoshioka
  • Patent number: 9212714
    Abstract: A fiber reinforced plastic spring is provided, in which broken pieces can be prevented from being scattered when breaking without using any additional member and variation in load when breaking can be reduced. FRP spring has a layered structure having basic unit consisting of a positive direction orientating layer and a negative direction orientating layer 22. By appropriately setting an absolute value of orientating angles of each layer, fibers in the positive direction orientating layer and the negative direction orientating layer can be entangled mutually, and thus, the spring as a whole exhibits pseudo-ductility in a breakage condition. Elastic modulus and strength available for use as a spring can be obtained and breaking at a resin portion between fibers can be prevented in each layer.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: December 15, 2015
    Assignee: NHK SPRING CO., LTD.
    Inventors: Ryohei Shigematsu, Miho Nakazono
  • Patent number: 8919752
    Abstract: The systems and methods described herein include innerspring assemblies or innerspring cores for use with cushioning articles such as mattresses. The innerspring core may have one or more coil springs formed from a high-carbon steel wire alloyed with one or more suitable alloying elements such as titanium and copper and capable of imparting greater strength and durability to the innerspring core.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: December 30, 2014
    Assignee: Dreamwell, Ltd.
    Inventors: Michael S. DeFranks, William J. Ready, Jeremy B. Lynn
  • Patent number: 8857801
    Abstract: A composite coil spring includes a coil body that extends along a coiled axis. The coil body includes a core and a plurality of fiber layers impregnated with a polymer material. The plurality of fiber layers are arranged around the core at different radial distances from the coiled axis. Each of the plurality of fiber layers extends around the coiled axis at an oblique fiber angle to the coiled axis. Each of the plurality of fiber layers includes a number of fibers that is a product of a common base number of fibers multiplied by a positive non-zero integer from a set of positive non-zero integers. The positive non-zero integer of at least one of the plurality of fiber layers is different from the positive non-zero integer of at least one other of the plurality of fiber layers.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: October 14, 2014
    Assignee: MSSC US
    Inventor: Jun Yoshioka
  • Publication number: 20140046502
    Abstract: A spring made of a fiber composite includes a metal thread which is connected to the spring and has an electrical resistance which changes in dependence on a deformation of the spring. The metal thread can be integrated inside the spring or may also be arranged on an outer side of the spring.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 13, 2014
    Applicant: Audi AG
    Inventor: Joachim Schmitt
  • Patent number: 8474805
    Abstract: The systems and methods described herein include innerspring assemblies or innerspring cores for use with cushioning articles such as mattresses. The innerspring core may have one or more coil springs formed from a high-carbon steel wire alloyed with one or more suitable alloying elements such as titanium and copper and capable of imparting greater strength and durability to the innerspring core.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: July 2, 2013
    Assignee: Dreamwell, Ltd.
    Inventors: Michael S. DeFranks, William Jud Ready, Jeremy Lynn
  • Patent number: 7722065
    Abstract: A leaf spring for a vehicle suspension is formed from a composite material and includes first and second ends that are longitudinally spaced apart from each other. A resilient element is attached to at least one of the first and second ends. The resilient element includes at least one hole that receives a connecting element. The resilient element and the connecting element cooperate to attach the leaf spring to a vehicle structure. In one example, the resilient element comprises a rubber block that is bonded to the leaf spring. In another example, the resilient element comprises a longitudinally orientated bushing that is inserted through a thickness of the leaf spring.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: May 25, 2010
    Assignee: ArvinMeritor Technology, LLC
    Inventors: David K. Platner, Arnett R. Weber, Rajesh J. Somnay, Holly Ann Giangrande, Tomaz Dopico Varela, Brian J. Knouff, Benjamin R. Reineck, Norman D. Austin, John E. Mutzner
  • Patent number: 7104372
    Abstract: A damping structure includes a member defining an internal cavity; an aggregate which includes at least solid bodies in contact and which completely fills the internal cavity; a rigid plate for closing off the internal cavity; and an elastic element which exerts elastic pressure on the rigid plate so as to constrain the aggregate. The member defining the cavity may be elongate with the internal cavity being formed longitudinally inside the member. At least some of said solid bodies may be hollow or solid, compact, made of different materials, of different shapes, and/or of different sizes.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: September 12, 2006
    Assignees: Eurocopter, Ateca
    Inventors: Marc Francis Vincent Dussac, Philippe Vie, Osmin Delverdier
  • Patent number: 7044458
    Abstract: An automotive suspension stabilizer bar includes a fiber-reinforced composite rod having sets of fibers oriented at 0°, +45°, and ?45° with respect to the longitudinal axis of the rod. Each end of the rod is secured to a respective light metal arm by first positioning the rod end in a recess in the arm and then crimping the arm about the rod end. The result is a lightweight, corrosion-resistant stabilizer bar.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 16, 2006
    Assignee: MacLean-Fogg Company
    Inventors: Timothy H. Daily, Jiri Pazdirek, Robert G. Budzyn
  • Patent number: 7032624
    Abstract: A novel rod linkage for driving a heddle shaft includes at least one strap (16), which for damping oscillation has a sandwich structure (37) oriented in the longitudinal direction (L) of the strap assembly (16). The sandwich structure includes at least one rigid element (27), extending in the longitudinal direction, which is joined to one end (17) of the strap assembly (16); a second rigid element (31), likewise extending essentially in the longitudinal direction, which is joined to the other end (19); and a two-dimensional damping element (34), again extending in the longitudinal direction, disposed between the first two. The element (34) exclusively effects the mechanical connection of the two parts (16a, 16b) of the strap assembly (16). Preferably, no additional connecting elements, such as rivets, screws, or other rigid connections, between the rigid elements (27, 31) are provided.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: April 25, 2006
    Assignee: Groz-Beckert KG
    Inventors: Johannes Bruske, Günter Büchle
  • Patent number: 7028998
    Abstract: A composite support comprising, a composite tube that is provided with an outer diameter and includes a first fiber layer including a resin and glass fibers that have been wound around a mandrel, a second fiber layer including glass fibers that have been wound around the first fiber layer, and an outermost fiber layer including glass fibers that is located around the second fiber layer, a housing that is at least in part spirally shaped and located around at least a portion of the composite tube, a plurality of fittings, wherein at least one of the fittings includes an aluminum and an anchoring surface, and the anchoring surface is provided with a diameter that is smaller than the outer diameter of the composite tube and secures, at least in part, the fitting to the composite tube, so that, after assembly, the fitting and the composite tube are generally coaxial.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: April 18, 2006
    Assignee: MacLean-Fogg Company
    Inventors: Timothy H. Daily, Jiri Pazdirek, Robert G. Budzyn
  • Patent number: 6935472
    Abstract: A damping structure includes a member defining an internal cavity; an aggregate which includes at least solid bodies in contact and which completely fills the internal cavity; a rigid plate for closing off the internal cavity; and an elastic element which exerts elastic pressure on the rigid plate so as to constrain the aggregate. The member defining the cavity may be elongate with the internal cavity being formed longitudinally inside the member. At least some of said solid bodies may be hollow or solid, compact, made of different materials, of different shapes, and/or of different sizes.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: August 30, 2005
    Assignees: Eurocopter, Ateca
    Inventors: Marc Francis Vincent Dussac, Philippe Vie, Osmin Delverdier
  • Patent number: 6811169
    Abstract: The present invention includes a flexible, resilient composite spring pivotally connected to the vehicle wheel assembly by standard means such as a ball joint and knuckle. The composite spring is formed having a sinusoidal profile with rectangular cross-section preferably spanning transversely between parallel vehicle wheel assemblies. The composite spring is pivotally connected to the parallel vehicle frames by opposing perpendicular brackets welded to an upper and lower portion of the vehicle frame. A rubber bushing is preferably provided within each bracket and is in contact with opposing sides of the composite spring, allowing the spring to pivot between the vehicle frame. The composite spring is preferably formed with carbon and glass fibers. The sinusoidal composite spring blank is preferably molded with a neutral axis extending along the length of the spring at a midpoint of the sinusoidal profile.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: November 2, 2004
    Assignee: DaimlerChrysler Corporation
    Inventors: Del C Schroeder, Lawrence J Oswald, David G Speth, Craig A Patterson, Suresh Nagesh
  • Publication number: 20030127786
    Abstract: An automotive suspension stabilizer bar includes a fiber-reinforced composite rod having sets of fibers oriented at 0°, +45°, and −45° with respect to the longitudinal axis of the rod. Each end of the rod is secured to a respective light metal arm by first positioning the rod end in a recess in the arm and then crimping the arm about the rod end. The result is a lightweight, corrosion-resistant stabilizer bar.
    Type: Application
    Filed: March 4, 2003
    Publication date: July 10, 2003
    Inventors: Timothy H. Daily, Jiri Pazdirek, Robert G. Budzyn
  • Publication number: 20030011119
    Abstract: A quartz coil spring which has a spiral coil formed of a quartz band. A mandrel bar having a length greater than the predetermined overall length of the coil spring is coaxially disposed in a preliminarily prepared quartz tube. Thermoplastic wax is charged into a space between the mandrel bar and the inner wall of the quartz tube and solidified, the space being filled with the wax filler. The quartz tube is rotated together with the wax filler around the axis by rotatively driving the mandrel bar. The quartz tube being rotated is spirally cut with a predetermined width from the outer peripheral surface by a rotatry cutter disc, thereby forming a spiral coil body. The wax filler is melted for removal by thermal treatment, whereby the spiral coil is released from the mandrel bar. The released spiral coil is immersed in a bath containing fluorinated acid and etched until a predetermined band thickness is obtained.
    Type: Application
    Filed: August 6, 2002
    Publication date: January 16, 2003
    Inventor: Masato Imai
  • Publication number: 20020153648
    Abstract: A transverse leaf spring structure and a manufacturing method for a composite transverse leaf spring is disclosed. The leaf spring is formed using a pre-formed tubular fiberglass fabric comprising longitudinally aligned and braided fiberglass fibers. The fabric is installed over an interior form, such as one or more inflatable bladders, and positioned within a forming mold. After resin is applied and cured to an appropriate stiffness within the mold, the mold is removed. The interior form is then removed from the composite leaf spring.
    Type: Application
    Filed: December 31, 2001
    Publication date: October 24, 2002
    Inventor: Robert C. Lawson
  • Patent number: 6460838
    Abstract: The present invention provides for a fiber reinforced suspension member having an integral pivot opening. The suspension member includes a first portion, a second portion and a central portion disposed in between the first portion and the second portion. The suspension member in accordance with the teachings of the present invention is formed of fibers that extend longitudinally from the first portion to the central portion and curve around the central portion such that an opening is defined in the central portion. The fibers forming the suspension member typically comprise an upper fiber layer and a lower fiber layer. The upper fiber layer and the lower fiber layer interface in the first portion and the second portion and are separated in the central portion. The upper layer fiber and the lower layer fiber are reinforced around the opening by stitching reinforcing fibers through the thickness of the suspension member.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: October 8, 2002
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Douglas James Bradley, Robert Christian Lawson
  • Patent number: 6354577
    Abstract: Composite material spring modules and methods of manufacture are described having a fiber reinforced composite material spring body with attachment fittings integrally formed about the spring body. The attachment fittings are molded of a flexible material which dynamically responds to changes in the shape of the spring body upon deflection. Integral formation of the fittings with the spring body provides a unified single piece module which is readily attachable to any structure where spring support is desired. The composite material spring modules exhibit the properties of stiffness and return to uncompressed state from total depth deflection without set. The composite material spring modules with integrally formed fittings are described a mattress foundation, by attachment to high and low profile frames and to an overlying grid. Methods of manufacture of the composite material spring modules with integrally formed attachment fittings are described.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: March 12, 2002
    Assignee: Sealy Technology LLC
    Inventors: Mark J. Quintile, Eugen Constantinescu, Robert F. Wagner
  • Patent number: 6189904
    Abstract: A vehicle wheel suspension has a composite, transversely oriented, leaf spring which is vertically thick and stiff in end regions extending inward from each end of the spring past the vehicle body support area but is vertically thin and compliant in a middle region between the end regions. The spring is constructed of a long, longitudinally aligned fiber and resin composite which is split at each outer end of the middle region into upper and lower horizontal layers separated by a core having a tapered inner end and extending through the end region. The inserts provide the additional vertical thickness in the end regions without widening the middle region and may be made of a different material, such as a short, randomly oriented fiber and resin composite. The spring thus flexes easily in the heave mode, in which the thin middle region of the spring flexes vertically in opposition to each end.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: February 20, 2001
    Assignee: General Motors Corporation
    Inventors: Johnny Ray Gentry, Jason J. Tao, Bruce Patrick Graham, Laurent Lasserre, Thierry Annequin, Jean-Marc Blancher, Olivier M. Derollepot
  • Patent number: 6170808
    Abstract: The invention relates to a spring core for mattresses and seat cushions with leaf springs. The spring core consists of a plurality of spring elements bent up out of passages punched in a plate, with each spring element having an upper and a lower spring clip, with the upper spring clip bent up out of a passage punched in the lower spring clip. The spring elements can also be coated with extruded foam.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: January 9, 2001
    Inventor: Franz Kutschi
  • Patent number: 5677046
    Abstract: Spiral bands having a plurality of convolutions of a high tensile strength composite material are formed by feeding a plurality of continuous high tensile strength fibers through an uncured resin to form a web, depositing the web on a release web having at least one substantially flat surface to form a laminate, winding the laminate around the mandrel to form a plurality of overlapping convolutions, curing the resin in the composite web to set the convolutions in a spiral configuration, and then removing the release web from the composite web. The convolutions of the spiral bands in accordance with this process have substantially flat surfaces and an elastic memory. These bands can be used to reinforce axially extending structures having internal forces directed radially outward therefrom by wrapping the band around the structure with a layer of adhesive applied to hold the convolutions in place.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 14, 1997
    Assignee: Clock Spring Company L.P.
    Inventors: Norman C. Fawley, Gordon Tipton, Justin Schmidt
  • Patent number: 5667206
    Abstract: A hybrid composite automotive leaf spring comprises parallel glass and polyethylene terephthalate fibers distributed in a pattern replicated throughout a resin matrix. A method of producing the hybrid composite leaf spring comprises winding various proportions of glass and polyethylene terephthalate or nylon fibers together into a homogeneous mass in an epoxy matrix in a mold to form a blank, which is then compressed and cured into a leaf spring having a predetermined homogeneous mixture of parallel fibers distributed throughout the cross-section of the spring. The unitary spring has a spring rate that is a composite of the resin-bonded glass and other fibers. Different spring rates are obtained by varying the percentage content of the glass and other fibers, while maintaining the homogeneity of the resultant leaf spring.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: September 16, 1997
    Assignee: General Motors Corporation
    Inventor: Jemei Chang
  • Patent number: 5603490
    Abstract: Fiber-reinforced composite springs having a unidirectional fiber wind. The present invention is a cylindrical torsion bar, or a helical tension or compression spring having a core that is either unreinforced, axial-fiber reinforced, or twisted fiber-reinforced, and a continuous-fiber-reinforced composite cladding having most or all of its fibers helically arrayed around the core. The core may be solid or hollow. The sense of the helical winding is that which places the fibers in tension when the spring is used as intended. A cladding fiber winding helix angle of approximately 55.degree. is used with a weak and unreinforced core, while larger or smaller helix angles are used only with a cores having sufficient stiffness to resist axial-normal stress.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 18, 1997
    Inventor: Mark F. Folsom
  • Patent number: 5597431
    Abstract: The present invention relates to a method and to a device for manufacturing parts made from resin and reinforcing fibers by winding. Molding means including a plurality of female forms corresponding each to a print of the part to be manufactured are produced. The forms are arranged one after the other, substantially helically, so as to make a continuous groove, then said groove is filled by winding with fibers coated with a polymerizable resin by rotating the prints round the axis of the helix.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: January 28, 1997
    Assignee: Institut Francais du Petrole
    Inventors: Fran.cedilla.ois Grosjean, Michel Huvey, Bernard Dewimille
  • Patent number: 5549370
    Abstract: Fiber-reinforced composite springs having a unidirectional fiber wind. The present invention is a cylindrical torsion bar, or a helical tension or compression spring having a core that is either unreinforced or axial-fiber reinforced, and a continuous-fiber-reinforced composite cladding having most or all of its fibers helically arrayed around the core. The core may be solid or hollow. The sense of the helical winding is that which places the fibers in tension when the spring is used as intended. A fiber winding helix angle of approximately 55.degree. is used with a weak and unreinforced core, while larger or smaller helix angles are used only with a cores having sufficient stiffness to resist axial-normal stress. By carefully selecting the materials for the core and cladding, as well as utilizing a fiber winding helix angle appropriate to the application, significant advantages over prior art springs are realized in energy per-unit-volume, energy per-unit-weight, and spring velocity.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: August 27, 1996
    Inventor: Mark F. Folsom
  • Patent number: 5425829
    Abstract: A hybrid composite automotive leaf spring comprises parallel glass and polyethylene terephthalate fibers distributed in a pattern replicated throughout a resin matrix. A method of producing the hybrid composite leaf spring comprises winding various proportions of glass and polyethylene terephthalate or nylon fibers together into a homogeneous mass in an epoxy matrix in a mold to form a blank, which is then compressed and cured into a leaf spring having a predetermined homogeneous mixture of parallel fibers distributed throughout the cross-section of the spring. The unitary spring has a spring rate that is a composite of the resin-bonded glass and other fibers. Different spring rates are obtained by varying the percentage content of the glass and other fibers, while maintaining the homogeneity of the resultant leaf spring.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: June 20, 1995
    Assignee: General Motors Corporation
    Inventor: Jemei Chang
  • Patent number: 5277409
    Abstract: A fluid-filled elastic mount wherein an elastic body elastically connecting a first and a second support partially defines a fluid chamber filled with a non-compressible fluid. The elastic mount includes an oscillating plate which partially defines the fluid chamber and which is supported by the second support such that the oscillating plate is displaceable relative to the second support, and an actuator for oscillating the oscillating plate to thereby change a pressure of the fluid in the fluid chamber. The elastic mount further includes an elastic support member for flexibly connecting the oscillating plate to the second support such that the oscillating plate is movable toward and away from the fluid chamber. This elastic support member is formed of an elastic material which substantially permits shearing deformation of the elastic support member and inhibits its compressive and tensile deformation.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: January 11, 1994
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Katsuhiro Goto, Akiyoshi Ide, Yutaka Ishioka, Rentaro Kato, Tetsu Matsui, Ryouji Kanda, Muramatsu, Keiichi Ishiba, Yoshiki Funahashi
  • Patent number: 5211418
    Abstract: A damping device is arranged between a surface of a ski and a binding holding a ski boot on the ski surface. The binding has a toe clamping member and a heel clamping member supported on a surface of a respective support portion. The damping device has a respective damping plate having an extension projecting from each support portion, the damping plate extensions extending towards each other in the same plane and having facing end faces defining therebetween at least a small gap. The damping plate extensions overlap in the direction of the longitudinal extension of the ski and are freely displaceable relative to each other in this direction.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: May 18, 1993
    Assignee: Varpat Patentverwertungs AG
    Inventor: Franz Scherubl
  • Patent number: 5193788
    Abstract: A damping bearing assembly, in particular a motor bearing for the vibration-insulated mounting of engines in motor vehicles, comprising an approximately annular spring body of fibrous composite materials, the spring body including a coil form of artificial resin impregnated fibers wound in several layers, force introducing elements clamping the coil form on mutually opposite sides, a working chamber for additional hydraulic damping disposed inside the spring body between the force-introducing elements, the working chamber being formed of elastically deformable material having a low degree of stiffness in an operating direction and a high degree of volume stiffness, a conduit hydraulically communicating with the work chamber and a compensating chamber hydraulically communicating with the conduit.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: March 16, 1993
    Assignee: Metzeler Gimetall AG
    Inventors: Matthias Richter, Mathias Gugsch, Robert Gresslinger
  • Patent number: 5194111
    Abstract: A composite beam having a constant stress geometry is provided wherein a varying fiber content in a fiber impregnated resin is employed across the beam's cross section to cause the neutral axis of the beam to shift toward the compressive side. The design provides the maximum deflection in the direction of the load before compressive failure occurs for a given size and shaped beam of equivalent stiffness.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: March 16, 1993
    Assignee: Pacific Coast Composites, Inc.
    Inventor: Franklin D. Meatto
  • Patent number: 5118373
    Abstract: A process for winding fiber material into a plurality of wrappings by using a winding device which has a rotational axis and two side walls arranged perpendicular to the rotational axis. Each side wall has two slits extending from the middle portion to both extreme ends of the side wall. The process includes the steps of rotating the side walls about its axis and bringing a supply of bolts into the radius of the side walls and feeding at least one bolt into the two adjacent slits in the side walls while the winding device is in rotation. Fiber material is wrapped around the bolts and additional bolts may be inserted during winding until the desired number of fiber wrappings is reached. After the winding is completed, the wrappings of fibers are placed in a mold and impregnated with resin and the resin is cured.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: June 2, 1992
    Assignee: The Dow Chemical Company
    Inventor: Bruno Krummenacher
  • Patent number: 5102107
    Abstract: A resilient support for a suspension system of the type comprising two frameworks (1) capable of being fastened to two assemblies between which the support is intended to be interposed. The support includes, as the main resilient element intended for supporting a load, at least one resilient tubular member (3), the axis (y) of which extends perpendicularly to the main direction (z) in which the load is exerted. An elastic material (2) is bonded or fixed on either side of the tubular member (3) for fastening the tubular member to a respective framework.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: April 7, 1992
    Assignee: Hutchinson
    Inventors: Jean-Michel Simon, Jean-Pierre Ciolczyk
  • Patent number: 5098493
    Abstract: A spring consisting of a rope having a plurality of strands each containing a plurality of monofilaments, and a cured binder which has saturated the rope under pressure to cause it to be self-sustaining in spring form. A method of fabricating a spring including the steps of providing a conventional rope composed of a plurality of monofilaments, saturating the rope under pressure with a binder to form a combined rope and binder, forming the combined rope and binder into a predetermined spring shape, and curing the binder to cause the spring to be self-sustaining in the formed predetermined spring shape. A self-damping spring formed by the foregoing method wherein the rope is of the twisted type, and the amount of damping being dependent on the angularity of the twisting. A spring consisting of a first portion of a rope impregnated with binder to hold the spring in a self-sustaining shape and an untreated second rope portion formed integrally with the first portion.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: March 24, 1992
    Assignee: Tayco Developments, Inc.
    Inventor: Paul H. Taylor
  • Patent number: 5082514
    Abstract: A fiber reinforced polymer beam may be manufactured by winding one or more strands of resin coated fibers about four pins mounted upon a winding fixture, each pin being independently translatable along the winding fixture and being independently extendable into, and retractable out of, the winding fixture. As the fiber is wound around the two exterior pins the interior pins will retract and translate to positions exterior of the pins being wound and will then extend to receive the next wrap of fiber. As the exterior pins are wound the interior pins continue to be translated to a position outside of the pins being wound so as to be in position to receive the next wrap of the fibers.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: January 21, 1992
    Inventor: William B. Howell
  • Patent number: 5065988
    Abstract: A spring for compression and tension mainly in an axial direction and made of a material having a Young's modulus of elasticity of at least 39 GPa, such as metal, steel, glass, plastic or reinforced plastic is disclosed. The spring is in the form of a tube or ring of generally constant thickness. In cross-section, each ring is made up of oppositely directed inner and outer U-shaped spring parts with contiguous axial projections. A spring is provided which has minimal elastic hysteresis.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: November 19, 1991
    Inventor: Anders S. Wedell
  • Patent number: 5020783
    Abstract: A torsional spring to be secured non-rotating to mutually rotating components at each end. At least two thin-walled piping sections are positioned loosely coaxial and secured together non-rotating at one end, accordingly functioning as a series of resilient sections. There are means of securing them non-rotating to the mutually rotating components at the other end. The spring especially constitutes a torsion bar for a connecting rod that pivots in a bearing mounted stationary in a vehicle and positions either a running wheel or a caterpillar cogwheel at the end remote from the bearing. The piping sections are integrated into each other such that one merges directly into the other at the end where they are secured together non-rotating in a turnback that represents a transition point. The piping sections are preferably made of fiber-reinforced plastic and may have several layers.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: June 4, 1991
    Assignee: IBP Pietzsch GmbH
    Inventors: Bernd Schroder, Rudolf Hartmann, Helmut Thate
  • Patent number: 5016861
    Abstract: An upwardly bowed single transverse leaf spring is provided and includes longitudinally spaced central mounting areas between which a longitudinal mid-portion of the spring extends. The spring includes opposite end portions on remote sides of said mounting areas for anchoring relative to vehicle wheel supporting spindle structures and the mounting areas of the spring have mounts stationarily mounted relative thereto but adjustably positionable longitudinally of the spring and the mounts are pivotally mounted from the stationary mounting structures for oscillation about horizontal parallel axes extending transversely of the leaf spring with the pivotal mounting of the mounts from the stationary mounting structures being such that each axis of oscillation of a mount relative to the corresponding stationary mounting structure may be adjusted transversely of the corresponding vehicle.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: May 21, 1991
    Assignee: Vette Products, Inc.
    Inventors: John E. Thompson, Angelo Gonzalez, Joseph S. Bursel, Hampton L. Aust, III
  • Patent number: 4991827
    Abstract: A spring consisting of a rope having a plurality of strands each containing a plurality of monofilaments, and a cured binder which has saturated the rope under pressure to cause it to be self-sustaining in spring form. A method of fabricating a spring including the steps of providing a conventional rope composed of a plurality of monofilaments, saturating the rope under pressure with a binder to form a combined rope and binder, forming the combined rope and binder into a predetermined spring shape, and curing the binder to cause the spring to be self-sustaining in the formed predetermined spring shape. A self-damping spring formed by the foregoing method wherein the rope is of the twisted type, and the amount of damping being dependent on the angularity of the twisting. A spring consisting of a first portion of a rope impregnated with binder to hold the spring in a self-sustaining shape and an untreated second rope portion formed integrally with the first portion.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: February 12, 1991
    Assignee: Tayco Developments, Inc.
    Inventor: Paul H. Taylor
  • Patent number: 4984776
    Abstract: An end attachment assembly for a twisted rope torsion bar includes an anchor nut and an internal elastomeric bushing cooperatively mating with the nut. The elastomeric bushing is molded onto the end of the twisted rope torsion bar. The torsion bar is fabricated of a lightweight glass fiber/epoxy composite material. The elastomeric bushing has external splines cooperating and mating with splines on the inner bore of the anchor nut. The end attachment assembly compresses the end of the twisted rope torsion bar to reduce stress concentration and prevent separation, i.e. the application of torque to the anchor nut transmits a like amount of torque to the elastomeric bushing to compress and more firmly grip the twisted rope torsion bar. The elastomeric bushing is compressed radially inwardly by the cam shape of the mating splines. Advantageously, the elastomeric bushing proportionally increases the grip on the end of the torsion bar so that the joint is made tighter and tighter under increased torque.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: January 15, 1991
    Assignee: General Motors Corporation
    Inventor: Jack E. Smith
  • Patent number: 4969633
    Abstract: A molded fiber reinforced plastic leaf spring. The spring has a curved central section composed of longitudinally extending fibrous strands impregnated with a cured thermosetting resin. The central section is generally rectangular in cross section having rounded upper and lower edges and a ground-off parting line disposed substantially at the neutral axis of the spring.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: November 13, 1990
    Assignee: A. O. Smith Corporation
    Inventor: William E. Ryan
  • Patent number: 4927124
    Abstract: Assembly comprising a spring in the form of a zig-zag strip of fibre reinforced plastics material with limbs (10-16) connected by reflex portions (17,22), wherein end limbs (10,16) of the spring are mounted at an attitude they would adopt when loaded if they were pin-jointed so as to be free to move as the spring is loaded so that over-stressing of the reflex portions (18,21) of the spring is thereby avoided when the spring is loaded. In modifications of the invention, a spring end limb (39) may be progressively engaged by a surface (42) of a mounting to be supported at a range of attitudes corresponding to a range of spring loads; or a spring mounting may be associated with pivotable members so that end limbs of the spring move arcuately therewith and change their relative attitude as if they were pin-jointed.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: May 22, 1990
    Assignee: GKN Technology Limited
    Inventors: Colin E. Spedding, Andrew Pollard
  • Patent number: 4903950
    Abstract: A hydraulic antivibratory support is provided comprising a rigid base (4), a rigid annulus (1), a resilient annular support wall (6) sealingly connecting the base to the annulus and a flexible membrane (7) sealingly connected to the annulus, the inside of the sealed case thus formed being divided by a sealed dividing wall into two chambers connected together through a restricted passage, and a liquid mass filling the two chambers. A traction resistant cable section (13) is situated inside the support and is fixed to the case and to the rigid annulus so that the relative movements of these two elements away from each other are limited by said cable section being placed under traction.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: February 27, 1990
    Assignee: Hutchinson
    Inventor: Daniel Gregoire
  • Patent number: 4836516
    Abstract: A hollow torsion bar reinforced by a mixture of resin and filler and method of making such a torsion bar. The torsion bar is formed from mild or medium grade steel seamless or welded tubing. The tubing is cut to length and charged preferably with a mixture of substantially uncured thermoset resin and plastic or glass hollow microspheres and/or metal pellets. The mixture may be charged into the tube by injection as a paste or by placing inside the tube a B-stage form insert having preferably between about 10 and 50 percent elongation tensile strength. After the tube has been charged with the reinforcing mixture, the tube is bent to form a torsion bar having a radius arm and a spring portion. In areas that the torsion bar is bent, the reinforcing mixture is provided to act as an internal mandrel preventing collapse of the tube walls. The mixture is then cured and bonded in place by chemical reaction of the rein or by thermally curing the resin mixture within the tube.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: June 6, 1989
    Assignee: Essex Composite Systems
    Inventor: Joseph Wycech
  • Patent number: 4826143
    Abstract: The invention relates to a method of manufacturing a spring (10) of the cylindrical type to be used at high temperatures. This spring (10) is made of refractory material, such as quartz, boron nitride or graphite. It is constituted by recesses (11.sub.1 to 11.sub.7) not adjoining each other, having a height h and which are distributed along a helical line. The method of manufacturing utilizes a wire saw for forming these recesses in a cylindrical tube, which is subjected to a rotation after each sawing operation. The absence of microcracks imparts a high elasticity to the spring up to high temperatures. It is used for transmitting movements at high temperatures, more particularly when conditions of perfect cleanliness are desired, as, for example, in the case of semiconductor metallurgy.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: May 2, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Bernard Latorre, Claude Foucher
  • Patent number: 4802659
    Abstract: A leaf spring of fibre reinforced composite material comprises a longitudinal cross-section having a thickened central zone, adjacent tapered zones and end zones. The tapered zones have curved surfaces comprising convex and concave portions, the convex portions being adjacent to the central zones and the concave portions being adjacent to the end zones. Each convex and concave portion is a segment of a curve defined by the equation(X/A).sup.c +(Y/B).sup.D =1.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: February 7, 1989
    Assignee: British Petroleum Company p.l.c.
    Inventor: Stephen A. Hope
  • Patent number: 4801019
    Abstract: A shock absorbing spring device (A,C) is illustrated which includes a plurality of elongated, slender spring elements (B). The device may also include a central shock absorbing unit (10). Spring elements (B) comprise fiber reinforcing strands (32) embedded in the matrix material (31). Spring elements (B) have a contoured profile which includes a thickened medial bend (38) and a reverse bend (44) formed at ends (34,36). In this manner, spring elements (B) deflect outwardly from their longitudinal axis in a reliable manner when ends (34) and (36) are loaded with compression. In one embodiment of the device (A) spring elements (B) are arranged to deflect radially with respect to longitudinal axis (37) of the device. In another embodiment (C) medial portion (38) of spring elements (B) deflect circumferentially in a row about longitudinal axis (43) of the device.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: January 31, 1989
    Inventor: George W. Smolen, Jr.
  • Patent number: 4771997
    Abstract: The disclosure relates to a device with a flat component made of fiber-reinforced synthetic material and an end power induction unit, in particular a leaf spring or transverse link for motor vehicles. The flat component essentially enters the power induction unit without a change in fiber direction and is contained therein by a clamp. The contact point on the power induction unit is displaced by a distance "a", asymmetrically to the fiber levels such that a resultant of perpendicular forces and forces acting parallel to the fiber direction cause a reduction in stress and momentary relief. The portion of the flat component in the power induction unit has a length, using the perpendicular projection of the point of application of force, that is at least two-thirds of the length from the point of application of force to the resultant in the fiber plane or at least corresponds to quantity "a".
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: September 20, 1988
    Assignee: Audi AG
    Inventors: Hans-Gunther Haldenwanger, Manfred Schneeweiss, Siegfried Schaper
  • Patent number: 4772044
    Abstract: A flexible, resilient control arm is rigidly connected at an inner end thereof to a side of a vehicle frame and pivotally connected at an outer end thereof to a wheel assembly. A rigid control arm may be pivotally connected at an inner end thereof to the side of the frame and pivotally connected at an outer end thereof to the wheel assembly. A shock absorber is connected for damping motion of the wheel assembly. The flexible control arm thus operates in place of a second rigid control arm and a separate coil or leaf spring. The flexible control arm may have various composite constructions for providing both dimensional integrity and flexibility, including metal and binder impregnated fiber portions having varying thickness and width along their lengths.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: September 20, 1988
    Inventor: Benjamin V. Booher
  • Patent number: 4767134
    Abstract: A vehicle suspension system includes a primary composite control arm element and a secondary composite control arm element. The secondary element has a length shorter than a length of the primary element. A root attachment assembly is provided for mounting an inner end of each of the primary and secondary elements to a corresponding side of a vehicle frame. The primary and secondary elements are positioned relative to each other such that the secondary element overlaps an inner portion of the primary element. An outer portion of the primary element extends beyond an outer end of the secondary element. A wheel hub assembly is mounted to the outer portion of the primary element. A shock absorber is connected to the side of the frame for damping motion of the outer end of the primary element relative to the frame. The primary and secondary composite control arm elements provide greater overall strength, a progressive spring rate, and over-load protection.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: August 30, 1988
    Inventor: Benjamin V. Booher