Rubber Patents (Class 267/153)
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Patent number: 6557816Abstract: A motor mounting structure having a motor and a mounting portion to which the motor is mounted. When an external force resulting from a load acting in a direction orthogonal to a motor shaft is applied to the shaft, a hardness or configuration of an elastic member disposed between the motor and the mounting portion to which the motor is mounted changes. Alternatively, a configuration of the mounting portion may be changed and the motor mounted such that the motor shaft is parallel to a set target mounting direction. Accordingly, an unbalanced load is not partially applied to a driving force transmission mechanism at the time the motor is rotated, and an excessive load is not placed on the motor.Type: GrantFiled: February 7, 2001Date of Patent: May 6, 2003Assignee: Fuji Photo Film Co., Ltd.Inventor: Futoshi Yoshida
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Patent number: 6554262Abstract: A system for isolating wall hung equipment from shock and vibration including a wall mountable support or fixture having a first member for securing to a wall and a second member for securing to equipment with a plurality of triad elastomers mounted therebetween to cantileverly support the equipment and at the same time isolate the equipment from shock and vibration. The elastomer mounts while permitting displacement of the members with respect to one another inhibit the members from contacting each other when one or the other is subject to shock or vibration.Type: GrantFiled: August 23, 2001Date of Patent: April 29, 2003Assignee: Lockheed Martin CorporationInventors: Robert James Monson, Trevor J. McCollough
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Patent number: 6536594Abstract: A vibration damping bushing including an elastic body of generally cylindrical shape formed of an elastic material and having a bore through which there is inserted a shaft member whose vibration is to be damped, and an outer mounting surface which extends in an axial direction of the elastic body and at which the elastic body is fixed to a mounting bracket, wherein a plurality of engaging jaws are formed integrally with the elastic body, on respective peripheral portions of the outer flat mounting surface of the elastic body, such that the engaging jaws extend from the mounting surface and are elastically engageable with respective engaging portions of the mounting bracket, so that the elastic body is fixed to the mounting bracket.Type: GrantFiled: February 27, 2002Date of Patent: March 25, 2003Assignee: Tokai Rubber Industries, Ltd.Inventor: Naoki Hayashi
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Patent number: 6533258Abstract: A barrel elastomer mount having a first hollow frustum composed of an elastomer and having a first end and a second end with the first end of the first hollow frustum having an interior diameter larger than an external diameter of the second end of the first hollow frustum; and a second hollow frustum composed of an elastomer having a first end and a second end with the first end of the second hollow frustum having an interior diameter larger than an external diameter of the second end of the second hollow frustum. The first hollow frustum is securely attached to the second hollow frustum at the first end of the first hollow frustum and at the first end of the second hollow frustum creating an enclosed cavity whereby the walls of the elastomer mount provide tension and shear resistance to shock and vibrational forces as well as to compressive static forces.Type: GrantFiled: February 8, 2001Date of Patent: March 18, 2003Assignee: Lockheed Martin CorporationInventors: Robert James Monson, Scott J. Benjamin, Jianhua Yan
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Patent number: 6511059Abstract: Antivibration device comprising an antivibration mount fastened to a vehicle chassis and a motor bracket fastened to a vehicle motor. The motor bracket includes two branches each having a downwardly open housing which fits on a corresponding ear of the antivibration mount. The branches of the motor bracket are secured to the ears of the antivibration mount through screws which extend at an angle of 45° relative to the horizontal.Type: GrantFiled: May 1, 2001Date of Patent: January 28, 2003Assignee: Paulstra CRCInventor: Stephane Seynaeve
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Patent number: 6494444Abstract: Vibration damping device for vehicles includes: a rigid housing member having an accommodation space and fixed to a vibrative member; and an independent mass member having a rigid mass body and an elastic body layer bonded on the outer surface of the rigid mass body. The independent mass member is non-adhesively disposed in the accommodation space such that an outer surface of the independent mass member is opposed to the inner surface of the housing member with a predetermined gap distance therebetween, to thereby permit displacement of the independent mass member relative to the housing member. The independent mass member and the housing member is brought into elastic impact against each other, upon application of a vibrational load, at respective abutting surfaces thereof which are opposed to each other in a vibrational input direction.Type: GrantFiled: February 27, 2001Date of Patent: December 17, 2002Assignee: Tokai Rubber Industries, Ltd.Inventor: Koichi Hasegawa
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Patent number: 6485008Abstract: An automotive suspension assembly providing a jounce stop arrangement. The elastic bumper is placed into a flexible cup. The flexible cup connects to the surface of the cylinder of a strut assembly or other assembly. Upon application of a force upon the elastic bumper, the elastic bumper collapses into the flexible cup. The flexible cup also expands in reaction to the force upon the elastic bumper. The assembly provides dual system of absorbing the energy from an impact in the combination of collapsing and expanding of the elastic bumper and flexible cup.Type: GrantFiled: January 26, 2002Date of Patent: November 26, 2002Assignee: Edwards IndustriesInventor: Gary J. Griffin
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Patent number: 6474631Abstract: A cylindrical rubber elastic member for having a stabilizer bar inserted therein comprises an inner layer rubber with high sliding properties and an outer layer rubber provided outside of the inner layer rubber. Both the stability in operation and the riding comfort can be improved. Further, the rubber elastic member comprises a sliding surface made of a rubber with high sliding properties at the end face thereof. Frictional resistance can be lowered to prevent abnormal noise. A stabilizer bushing comprising a main body rubber portion of a sulfur-vulcanizable first rubber compound and a sliding rubber portion of a second rubber compound containing a sulfur-vulcanizable lubricant on the inner surface of the main body rubber portion, wherein the first rubber compound exhibits vulcanizability satisfying: t90−t50 ≧1.Type: GrantFiled: March 16, 2001Date of Patent: November 5, 2002Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Katsuya Hadano, Hideyuki Imai, Takaaki Ando, Hiroshi Yokoi
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Patent number: 6467587Abstract: A shock absorber for a shaft. The shock absorber comprises a collar having an opening receiving the shaft. A clearance gap is defined between the collar opening and the shaft. A pin offset from the axis connects the collar to a shoulder on the shaft. A resilient o-ring arranged in the clearance gap engages the collar and the shaft. In operation, the collar and the shaft rotate in unison. However, when the collar accelerates or comes to a sudden stop, the resilient o-ring compresses to provide the shock absorption. The shock absorber may be incorporated into a rotary actuator. In a rotary actuator, the collar includes a stop tab that rotates between two stop surfaces of the actuator housing. When the stop tab strikes one of the stop surfaces, the resilient member compresses thereby absorbing and reducing impact force. Compression in the resilient member is snubbed via mechanical stops.Type: GrantFiled: February 26, 2001Date of Patent: October 22, 2002Assignee: Woodward Governor CompanyInventors: George Sanchez, Henri A. Siedow
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Publication number: 20020149146Abstract: The disclosure concerns an elastic articulation designed to operate in torsion and comprising an elastomeric sleeve 7 whereof the inner and outer peripheral surfaces are linked without any possibility of sliding respectively to inner 8 and outer 9 reinforcements, and which is configured such that the articulation should have a minimal radial rigidity along a first reference axis Z′ of a system with three reference axes X′, Y, Z′ whereof the second reference axis Y merges with the axis of the elastic articulation 5, at least one of the two end surfaces 7a and 7b of the sleeve 7 has a profile which continuously moves in the circumferential direction of the sleeve between at least a minimum and at least a maximum, the minimum or minima and the maximum or maximums of the profile in the inner peripheral zone of the end surface being offset by a predefined angle respectively relative to the minimum or minima or to the maximum or maximums of the profile in the outer peripheral zone of the end surfaType: ApplicationFiled: March 28, 2002Publication date: October 17, 2002Inventor: Serge Lefebvre
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Publication number: 20020117791Abstract: A spring element used in a temporary package for testing semiconductors is provided. The spring element is compressed so as to press the semiconductor, either in the form of a bare semiconductor die or as part of a package, against an interconnect structure. The spring element is configured so that it provides sufficient pressure to keep the contacts on the semiconductor in electrical contact with the interconnect structure. Material is added and/or removed from the spring element so that it has the desired modulus of elasticity. The shape of the spring element may also be varied to change the modulus of elasticity, the spring constant, and the force transfer capabilities of the spring element.Type: ApplicationFiled: April 18, 2002Publication date: August 29, 2002Inventors: David R. Hembree, Salman Akram, Derek Gochnour
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Patent number: 6435490Abstract: A dual hemisphere elastomer mount having a first hemisphere composed of an elastomer and having a polar region and a base region with the polar region of the first hemisphere having a circumference smaller than a circumference of the base region of the first hemisphere; and a second hemisphere composed of an elastomer having a polar region and a base region with the polar region of the second hemisphere having a circumference smaller than a circumference of the base region of the second hemisphere, the first hemisphere securely attached to the second hemisphere at the polar region of the first hemisphere and at the polar region of the second hemisphere creating a hour-glass shaped body whereby the elastomer mount can support a housing while attenuate shocks and vibrations.Type: GrantFiled: February 8, 2001Date of Patent: August 20, 2002Assignee: Lockheed Martin CorporationInventors: Robert James Monson, Trevor J. McCollough
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Patent number: 6427988Abstract: A vibration reducing device for bicycles that includes a sulfurated synthetic rubber shrinkable knotted tube. The tube has at least one spherical knot and a net reinforcing layer formed in a circumferential wall. An air valve is used to control air pressure in the device.Type: GrantFiled: November 12, 1998Date of Patent: August 6, 2002Assignee: Gigga Corp.Inventor: Yi-Ten Li
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Patent number: 6416030Abstract: An elastomeric mounting/isolation assembly (10) having several annular elastomeric elements (12, 32, 34), several rigid sleeves (14, 16, 40), and a fastener (42), in which the radial and axial spring rates are effectively de-coupled from each other such that changing one spring rate has substantially no, or little, effect on the other spring rate. The de-coupled spring rates can enable the assembly to better meet diverse considerations involving noise, vibration, and/or harshness, commonly known as NVH, on the one hand, and vehicle dynamics on the other hand.Type: GrantFiled: June 29, 2000Date of Patent: July 9, 2002Assignee: Ford Global Technologies, Inc.Inventors: Mark Allan Bergdahl, Isiah Charles White
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Publication number: 20020079627Abstract: A molded or non-molded elastomeric shock cell having a base with legs extending from each side of the base with each of the legs having a foot that extends laterally outward from the legs to provide a unitary elastomeric shock cell that can be individually mounted to support plates or a plurality of elastomeric shock cells can be ganged, or stacked together to produce a composite isolator with different shock isolation characteristics. The elastomeric shock cell if mountable in one axis provide tension resistance and if mounted in a bias axis or right angle axis provide tension and compression resistance to shocks to the system.Type: ApplicationFiled: December 22, 2000Publication date: June 27, 2002Inventors: Trevor J. McCollough, Wesley Eugene Revely, Brian Scott Leininger, Robert James Monson
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Patent number: 6402129Abstract: A casing is composed of two hollow members which are made of an elastic material and stacked in a manner of one above the other. When the casing is mounted on a frame of a body of equipment with a shoulder bolt, the hollow members are made airtight.Type: GrantFiled: September 6, 2000Date of Patent: June 11, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Hideo Tani
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Publication number: 20020063369Abstract: A rubber shock absorber, comprising a shock absorbing device body. The shock absorbing device body is made of elastic material, mounted in a shock absorbing device and absorbs pressure to which said shock absorbing device is exposed. The shock absorbing device body consisting of a plurality of sections with different diameters and different elastic coefficients. Peripheral grooves are cut into the shock absorbing device body at interfaces between the sections thereof. The shock absorbing device body has an elastic coefficient that varies in several stages, so that during an absorption process stages of different absorption characteristics are gone through.Type: ApplicationFiled: November 30, 2000Publication date: May 30, 2002Inventor: Kou-Ming Huang
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Patent number: 6386526Abstract: Wind/rain induced vibrations, as well as vortex shedding vibrations induced in a cable stay or a similar elongated, cylindrical element are dampened and substantially eliminated by applying a plurality of flexible damper bands to the cable at spaced intervals. The damper bands break up the formation of rivulets of water at lower wind speeds. These damper bands can be retrofit to existing cables or can be installed on new cables.Type: GrantFiled: August 23, 2000Date of Patent: May 14, 2002Assignee: Texas Tech UniversityInventors: Partha P. Sarkar, R. Scott Phelan, Kishor C. Mehta, Thomas B. Gardner, Zhongshan Zhao
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Publication number: 20020053765Abstract: In a side bearing pad assembly two housings are provided, each having a bore of such size and orientation that the housings slide telescopically one within the other. When assembled the bores constitute a single internal cavity which houses resilient members. Each housing is mounted onto a load bearing member. The biasing resilient members urge the load bearing members apart when a compressive load is imposed on either of such members. The resilient members respond in a non-linear manner to force exerted on them.Type: ApplicationFiled: September 27, 1999Publication date: May 9, 2002Applicant: UNIROYAL CHEMICAL COMPANY INCInventor: RICHARD L. PALINKAS
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Publication number: 20020038928Abstract: A body mount for coupling a vehicle body to a vehicle frame is disclosed. The body mount includes a first member disposed on one side of the frame. The first member includes an elastomeric member with a plurality of pads formed about the periphery of the first member for defining a side to side and a fore/aft cushioning rate. The body mount also includes a second member disposed on an opposite side of the frame and operably coupled to the first member.Type: ApplicationFiled: December 5, 2001Publication date: April 4, 2002Inventors: Bernie W. Rice, Edward Sayej, Robert Bender
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Patent number: 6364293Abstract: An elongate or continuous fender having a surface mounting meeting portion and a conjoined fendering body. The meeting portion includes one or more elongate or continuous mounting pieces located alongside the fendering body to create upper and lower shoulders. The shoulders provide one part of a two part fastening with a surface mounting. The mounting piece can be an elongate strip. The fender and surface mounting together form a suitable impact-energy absorbing assembly. The form and shape of the fender provide a secure method of attaching such fenders to a supporting surface without affecting the fendering properties.Type: GrantFiled: June 13, 2000Date of Patent: April 2, 2002Assignee: Valpar Industrial LimitedInventor: Robert Prentice Beckett
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Patent number: 6364296Abstract: A body mount for absorbing compressive and shear forces in a vehicle is disclosed. The body mount includes a retainer member with a radial portion and an axially extending tubular portion. A microcellular bushing has base, a top, and a passageway extending from the top to the base. The axially extending portion of the retainer member is inserted into the passageway of the bushing. An insert is molded into the bushing to form a one-piece member. The insert has an inner diameter. The microcellular cylinder insert is adjacent to the axially extending tubular portion. A microcellular cylinder sleeve is formed between the inner diameter and the tubular portion and in combination with the insert resists lateral forces and does not interfere with the vertical forces from the frame to the body. The microcellular shear mount design provides excellent lateral shake isolation and excellent vertical rate dissipation over prior art rubber shear mounts.Type: GrantFiled: September 8, 1999Date of Patent: April 2, 2002Assignee: Freudenberg-NOK General PartnershipInventors: Neil Cummings, Carlos S. Fahroan, Mickey Love, Shahram Tousi
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Patent number: 6357732Abstract: An resilient member for a side bearing assembly includes a first rigid element extending in a linear direction and having a first end and a second end. A second rigid element extends in the linear direction of the first rigid element spaced from the first rigid element to provide a space between the two. The second element also has a first end. The first end of the second element is displaced along the linear direction away from the first end of the first rigid element. Resilient or elastomeric material fills the space between the first rigid element and the second rigid element with a substantially concave profile connecting the first ends of the two elements. The resilient material includes at least one weakened region along the substantially concave portion thereof as a result of assembly, which is located where the resilient material is subjected to the relatively lower stresses and strains when used in a side bearing assembly.Type: GrantFiled: January 31, 2000Date of Patent: March 19, 2002Assignee: Lord CorporationInventors: William G. Etzel, Troy P. Herbst, Philip A. Jones
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Patent number: 6345814Abstract: An accordion spring that replaces traditional coil springs in suspension systems. The accordion springs are made of a fiberglass composite and can be designed to have a linear or progressive spring rate upon compression. To achieve a linear spring rate, the shape of the accordion spring is symmetrical with both the top and bottom surfaces of each of the plurality of central regions of the spring are flat, wherein contact between the upper and lower surfaces of adjacent central regions will not occur until the accordion spring has bottomed out. A series of complementary bent regions are introduced to the spoked regions of the accordion spring that varies the spring rate of the spring as the spring is compressed. The accordion spring can be manufactured using a three-dimensional weaving process and offer improvements in weight reduction, mass reduction, packaging space reduction compared to traditional steel coil springs.Type: GrantFiled: September 20, 2000Date of Patent: February 12, 2002Assignee: Visteon Global Technologies, Inc.Inventor: Robert C. Lawson
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Patent number: 6343782Abstract: A vibration canceller having an inertial mass that is nonpositively joined to at least one spring element. The spring element is made exclusively of elastomeric material, is configured in substantially rod-shaped fashion, and is equipped on at least one of its end faces with a plug-shaped enlargement, the enlargement being arranged, under elastic preload, in a congruently configured opening of the inertial mass.Type: GrantFiled: June 7, 1999Date of Patent: February 5, 2002Assignee: Firma Carl FreudenbergInventors: Herwig Hönlinger, Günter Zeis
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Patent number: 6328294Abstract: An elastomeric spring system having non-linear force-deflection characteristics and low rebound is provided. The system comprises a housing and a plurality of first and second spring members movably disposed in alternating relationship within a bore defined by the housing. The first and second spring members are preferably formed from polyurethane such as the two part castable urethanes made from polyether-isocyanate or polyester-isocyanate prepolymers cured with organic diamine or polyol materials. When subject to a force along the axis of deflection, the first spring member is adapted to expand and progressively envelope the second spring members until the hemispherical ends of two of the first spring members meet within the first spring member, thereby causing the force-deflection characteristics of the spring to be nonlinear.Type: GrantFiled: November 2, 1999Date of Patent: December 11, 2001Assignee: CK Witco CorporationInventor: Richard L. Palinkas
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Publication number: 20010042950Abstract: The invention relates to a bearing unit (1) for receiving add-on parts and vehicle components on supporting parts of vehicles. The bearing unit (1) comprises at least one elastically deformable elastomeric component (3, 13) which is supported on a support (9). The support (9) has received elastomeric spring components (3, 13; 17, 18, 19, 20), not connected to one another.Type: ApplicationFiled: May 15, 2001Publication date: November 22, 2001Inventors: Thomas Burlage, Martin Hoerauf, Frank Friedrich, Jan Wucherpfennig
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Patent number: 6305674Abstract: A spring articulation structure particularly for play, fitness training and sports instruments, said structure comprising a core element (1) supported in between two rubber rings (2) and provided with a shaft element (5) fitted in said core element; a shell compactly surrounding the core element and the rubber rings and attached to a bottom plate (9), the top part (3′) of said shell being in the middle provided with a aperture (8) with a downwardly narrowing conical surface (7) for the shaft element (5); and a cylindrical element (4) resting on top of the top part (3′) of the shell and surrounding the shaft element (5).Type: GrantFiled: May 21, 1999Date of Patent: October 23, 2001Assignee: Lappset Group OyInventor: Markku Koivurova
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Patent number: 6296237Abstract: A bump stopper for elastically limiting an amount of operation of a suspension system of a vehicle, including a rigid holding member which includes a hollow holding portion opening toward the other suspension member, a spring member which is formed of a foamed elastic material and which includes a base end portion held by the hollow holding portion of the holding member and also includes a free end portion projecting away from the holding portion toward the other suspension member, and a stopper rubber which projects from an end surface of the hollow holding portion of the holding member toward the other suspension member such that a free end surface of the stopper rubber is more distant from the other suspension member than a free end surface of the spring member.Type: GrantFiled: November 15, 1999Date of Patent: October 2, 2001Assignee: Tokai Rubber Industries, Ltd.Inventor: Hiroaki Nagai
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Publication number: 20010020667Abstract: This device comprises an elastic element designed to be stretched between two fixing members spaced apart from one another in a direction of vibration and which are linked to one another by two elastomer branches, these branches extending substantially in the vibration direction. A vibrating mass links said branches to one another. This vibrating mass is provided in the form of a ring enclosing the elastic element so as to form two stop zones located respectively in the vicinity of the two fixing members in order to limit displacements of the latter under traction.Type: ApplicationFiled: March 6, 2001Publication date: September 13, 2001Inventors: Patrick Garaud, Gilles Chenais, Vincent Salembier
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Patent number: 6279884Abstract: A transmission mechanism has an outer casing. A hollow tube is connected to a bottom of the outer casing. A main frame has a panel having a round aperture. A shock absorbing assembly has a buffer device, a positioning seat disposed on the buffer device, and a screw rod fastening the positioning seat and the hollow tube together.Type: GrantFiled: September 21, 2000Date of Patent: August 28, 2001Assignee: Jenn Jianq Co. Ltd.Inventor: Tai-Yang Luh
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Patent number: 6254070Abstract: The present invention is a novel shock-absorbing mount (20) to protect shock sensitive equipment mounted thereon. It has a configuration of a C shape but contains various angles therein to increase the utility and agility of the shock absorbing mount (20). These angles are specifically derived to allow the shock-absorbing mount (20) to fully absorb extreme shock energy without transferring it to the equipment.Type: GrantFiled: January 4, 2000Date of Patent: July 3, 2001Assignee: Newport News Shipbuilding and Dry Dock CompanyInventor: Samuel A. Runge
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Patent number: 6250617Abstract: A compressible spring or shock attenuating apparatus is disclosed for axial insertion within an elongated hollow receptacle having a predetermined inner diameter. The compressible spring of the present invention comprises an elastomer body having an outer diameter and a pair of axially spaced ends. A series of substantially equal annular crests are axially disposed relative to each other on the elastomer body between the spaced ends, with a periphery of the crests defining an outer diameter for the elastomer body. The elastomer body is specifically configured such that the outer diameter of the elastomer body remains substantially constant even when the ends of the spring are compressed toward each other. According to the present invention, each crest of the elastomer body has a closed annular ring fixed and extending thereabout to promote maintaining the outer diameter of said body substantially constant as the ends move toward each other while defining a predetermined outer diameter for the spring.Type: GrantFiled: January 19, 1999Date of Patent: June 26, 2001Assignee: Miner Enterprises, Inc.Inventor: Kevin B. Tews
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Patent number: 6250613Abstract: A spacer for an air spring assembly includes a substantially cylindrical body having a substantially planar mounting surface. The body includes a central hub, an outer rim, and a plurality of structural arms connecting the outer rim to the central hub. The central hub includes a pair of concentric hub walls with a plurality of spoke ribs disposed between the hub walls. The outer rim includes an annular groove in its upper surface as well as a plurality of support ribs. Each of the structural arms has a T-shaped cross section. The spacer has five bolt holes that are configured to work with a single center mount, two point, three point, or a four point mounting pattern. The spacer is fabricated from a non-metallic material such as a high strength, lightweight plastic or fiber reinforced plastic.Type: GrantFiled: March 30, 1999Date of Patent: June 26, 2001Assignee: Bridgestone/Firestone, Inc.Inventors: Paul P. Koeske, Mohamad Taghizadeh, Pradipta N. Moulik, Todd M. Ziems, Andreas Peickert
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Patent number: 6247686Abstract: An anti-vibration block is comprised of two substantially cylindrical coaxial end parts joined together by a cylindrical body coaxial with the end parts and of smaller section than these, the end parts and the cylindrical body defining a groove, a substantially cylindrical axial through-hole passing through the block, the end parts having on their outer faces opposite the groove pairs of projections of I and T-shape respectively.Type: GrantFiled: May 19, 1999Date of Patent: June 19, 2001Assignee: GATE S.p.A.Inventor: Giuliano Gabbin
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Patent number: 6220585Abstract: A multi-stage resiliently compressible element for providing a biasing element having at least two portions having different compression resistances from one another. The multi-stage resiliently compressible element includes a resiliently compressible element comprising a resiliently deformable elastomeric material and having top and bottom faces and a side surface. The side surface of the resiliently compressible element has an annular channel therearound which divides the resiliently compressible element into top and bottom portions. The resiliently compressible element has a bore therethrough extending between the top and bottom faces. The bore has generally cylindrical top and bottom regions and top and bottom chambers interposed between the top and bottom regions of the bore.Type: GrantFiled: October 29, 1998Date of Patent: April 24, 2001Assignee: Timbren Industries IncorporatedInventor: Arnold J. Heron
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Patent number: 6209857Abstract: The present invention relates to a bumper device which is to be mounted on a stationary object to absorb a shock in the case a vehicle collides against the object, comprising at least one body of resilient material; and, at least on the front part of the body, a closed and flat front element of material with a low coefficient of friction in the case of contact with material of the vehicle.Type: GrantFiled: June 29, 1998Date of Patent: April 3, 2001Assignee: Stertil B.V.Inventor: Jan Berends
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Patent number: 6202995Abstract: A shock absorber includes an outer tube, an inner tube having a proximal end sleeved slidably into the outer tube and a distal end extending away from the outer tube, a shaft disposed inside the inner tube, a plurality of shock absorbing elastic blocks which are mounted on the outer tube for positioning resiliently the distal end away from the outer tube and which are sleeved around the shaft inside the inner tube without contacting the inner tube, each block having an inner tubular part sleeved around the shaft, and an outer tubular part wrapped around the inner tubular part. The inner and outer tubular parts are made of rubber materials having different degrees of stiffness. The inner tubular part has a stiffness higher than that of the inner tubular part to resist and limit impact pressure acting on the outer tubular part, thereby reducing deformation of the outer tubular part along radial directions and preventing the blocks from contacting the inner tube upon shock.Type: GrantFiled: June 29, 1999Date of Patent: March 20, 2001Assignee: Perfection Mighty Industrial Co., Ltd.Inventor: Long-Wen Jou
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Patent number: 6199844Abstract: Contact noise generated between a striker cap mounted on a strut and a jounce bumper connected to a shock tower is reduced by providing an axial projection on the roof of the striker cap. The projection progressively displaces and compresses the elastomeric jounce bumper material and thereby avoids large compressive impulse forces and associated noise generation.Type: GrantFiled: July 27, 1998Date of Patent: March 13, 2001Assignee: Chrysler CorporationInventors: Paul B. McCormick, Mark C. Smith, Richard R. Churay
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Patent number: 6196531Abstract: To provide a compression spring formed of an elastic body made from a resin or rubber which is capable of maintaining its shape upon deformation without the use of any supporting member, thereby always ensuring a specific load-deformation characteristic. A compression spring of the present invention includes a cylindrical spring main body, wherein compression energy generated when the compression spring is pressed in the radial direction is absorbed by elastic deformation of the cylindrical spring main body. In this compression spring, a base having a flat bottom surface swelled along a plane perpendicular to the pressing direction is formed on the pressing force receiving side of the spring main body. Furthermore, a reinforcing wall for connecting the swelled portion of the base to a side portion of the cylindrical spring main body is formed integrally with the spring main body.Type: GrantFiled: February 19, 1999Date of Patent: March 6, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroki Makino, Tsutomu Tomizawa
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Patent number: 6189874Abstract: A mount for isolating a vibrating member from its support. In several embodiments an elastomeric element is made up of four components that are preferably bonded to the inclined outer surface of an inner member and the inclined inner surface of an outer member. One of the inner and outer members is bifurcated and drawing the two halves into mating engagement results in the elastomeric components being preloaded simultaneously in compression and shear. The elastomeric element is preferably formed with portions which snub movement in each of three orthogonal directions. The dimensions of the pair of elastomeric components above or below the vibrating member may be different than the other pair since the greater compression strain on one pair of components to maintain maximum design stress levels.Type: GrantFiled: April 6, 1998Date of Patent: February 20, 2001Assignee: Lord CorporationInventor: Holly Marie Carlson
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Patent number: 6186486Abstract: A jounce bumper plate for a damping module of a type commonly employed automotive suspension system having a hydraulic cylinder with an upper end cover, a piston rod slidably extending from the upper end of the cylinder and ajounce bumper mounted upon the piston rod. The jounce bumper plate mounted on an upper end of the cylinder and includes a central bore therethrough to allow slidable passage of the piston rod, and includes a series of arches extending about the outer periphery of the plate. The arches increase in curvature from the central bore to the outer periphery, thereby forming gaps between the jounce bumper plate and the associated hydraulic cylinder to facilitate the expulsion of moisture and contaminants from the upper end of the hydraulic cylinder during compression and extension cycles of the associated cylinder.Type: GrantFiled: July 30, 1999Date of Patent: February 13, 2001Assignee: Delphi Technologies, Inc.Inventors: Ralph M. Gutman, David Adolph Bobinger, Douglas H. Markwood
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Patent number: 6170782Abstract: A resilient support (10), such as for supporting part of the exhaust system of a motor vehicle, is molded from elastomeric material such as rubber. Upper and lower end blocks (16, 18) have through bores (12, 14) for receiving fixtures connected respectively to the body of the vehicle and to the exhaust system. The blocks (16, 18) are interconnected by three integral diagonally directed arms (22, 24, 26). Vertical vibration of the exhaust system is resisted, absorbed and damped by a combination of tension in the arms (22, 24, 26) and bending at their points of interconnection with the upper and lower blocks (16, 18). The support (10) is thus relatively resilient in this direction. However, sideways movement of the exhaust system, tending to cause movement of the lower block (18) in the direction of the axis of the lower bore (14), is firmly resisted by the arms (22, 24, 26).Type: GrantFiled: February 25, 1999Date of Patent: January 9, 2001Assignee: Draftex Industries LimitedInventors: Gonzague Barrier, Pascal Chanteux, Luc Pecot
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Patent number: 6149475Abstract: An outboard motor is configured for steering by a tiller arm. The tiller arm is moveable relative to the outboard motor about a transverse axis and is arranged to steer the motor about the vertical axis. The outboard motor further has a power head that contains a vibration engine and is comprised of a protective cowling and lower tray. A tiller arm mounting bracket is secured to the power head and a mounting structure extends from the tiller arm. A resilient member is juxtaposed between the mounting bracket and the mounting structure. A gap is defined between a face of the resilient member and the tiller arm such that the resilient member may freely vibrate within the gap without that face of resilient member contacting the tiller and directly translating vibrational energy to the tiller arm.Type: GrantFiled: December 28, 1998Date of Patent: November 21, 2000Assignee: Sanshin Kogyo Kabushiki KaishaInventors: Yoshiaki Tasaka, Toshihiro Nozue, Kentaro Kameoka, Noritoshi Suzuki
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Patent number: 6147154Abstract: A chloroprene rubber composition which contains carbon black and of which the breaking elongation A and the static modulus in shear B of the vulcanizate satisfy the following formula:A.gtoreq.-36.4.times.B+1090 (1)where A is the breaking elongation (%) and B is the static modulus in shear (kgf/cm.sup.2).Type: GrantFiled: December 22, 1999Date of Patent: November 14, 2000Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Nobuhiko Fujii, Mitsuyuki Nakada, Kazuomi Aoki
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Patent number: 6113084Abstract: A jounce bumper assembly for cushioning the impact between two components of an automotive suspension system is provided. The jounce bumper assembly includes a mounting plate with at least one, but preferably two, substantially tubular proturbances protruding from a face thereof. A bumper is molded from a microcellular polymeric material around the mounting plate such that the ends of the proturbances extend out from the bumper. The bumper is disposed within a mounting cup having a recess sized and shaped to receive the bumper. The recess has holes passing therethrough corresponding to the proturbances such that the ends of the proturbances pass through the holes. The ends of the proturbances passing through the holes are deformed radially outwardly such that the bumper is fixed within the recess of the mounting cup. A method of manufacturing such a jounce bumper assembly is also provided.Type: GrantFiled: September 18, 1998Date of Patent: September 5, 2000Assignee: Illinois Tool WorksInventors: James F. Norkus, William J. Curley, Jr
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Patent number: 6109637Abstract: A bicycle frame uses an existing frame member--a seat stay--as a spring, and absorbs high frequency, low amplitude vibration with effective damping. The spring force constant can be adjusted for rider weight, riding style, road or terrain conditions, or the like, and the system is lightweight. Each seat stay is connected at a top end to the seat tube, and pivotally connected at the bottom end to the rear drop out, and has a circular arcuate curvature adjacent the bottom end with a radius of between about 11-16 inches and subtending an angle of between about 20-60 degrees. A damping/spring constant increasing element, comprising a metal strip bonded to elastomeric material (such as silicone) having a durometer between about 20-70 Shore A, is bolted to the seat stay convex arcuate portion, and can be replaced with a unit having a different durometer.Type: GrantFiled: April 10, 1998Date of Patent: August 29, 2000Assignee: Great American Bicycle Co., LLCInventor: David E. Kirk
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Patent number: 6105944Abstract: A bonded component (126) adapted for insertion in a housing (120) thus forming a mount (118). The bonded component (126) includes an inner member (128) including a outer periphery (129) having a preferably non-planar profile along its width and an elastomer (130) bonded thereto. The elastomer (130) includes a first arcuate section (142) extending through a first arc (.theta..sub.1) and having first and second lateral faces (150a-c), a second arcuate section (142') extending through a second arc (.theta..sub.2) also having first and second lateral faces (150b-d), notches (148a-d) formed in first and second lateral faces of each of said first and second arcuate sections, the notches only extending part way across each of said sections. In another aspect, the location of the notches (148a-d) are vertically and/or angularly offset from said fore-and-aft axis (146).Type: GrantFiled: April 20, 1998Date of Patent: August 22, 2000Assignee: Lord CorporationInventor: Thomas A. David
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Patent number: 6089553Abstract: Proposed for mounting an engine in a motor vehicle is a resilient bearing which comprises a rigid casing (1) for connection to, for example, the body, a rigid inner liner (3) for connection to, for example, the engine and a spring (2), fitted between casing and liner. The spring of elastomeric material is fastened at least on one side to the outer sleeve. It encloses, solidly connected, the outer circumferential surface of the liner (3). The spring is dimensioned such that it does not entirely fill the interior of the casing.Type: GrantFiled: August 1, 1997Date of Patent: July 18, 2000Assignee: BASF AktiengesellschaftInventors: Thomas Burlage, Klaus Giesen
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Patent number: 6062347Abstract: An elevator system 10 includes an elevator car 12 with a plurality of roller guide assemblies 20 attached hereto. The roller guide assemblies 20 guide the elevator car 12 vertically within a hoistway along a plurality of guide rails 16. Each roller guide assembly 20 includes at least one resin stop assembly 50 to minimize vibration and lateral movement of the elevator car 12. The resin stop assembly 50 includes a resin spring 52 adjacent to a rigid container 54, both coupled between a roller wheel arm 26 and the roller guide base 40. The resin stop assembly 50 improves the ride quality of the elevator car 12 by selectively limiting lateral acceleration and velocity of the elevator car 12.Type: GrantFiled: November 12, 1998Date of Patent: May 16, 2000Assignee: Otis ElevatorInventor: Boris G. Traktovenko