Polytetrafluorethylene Patents (Class 384/300)
-
Patent number: 6365556Abstract: A self-lubricating liner includes poly(p-phenylene-2, 6-benzobisoxazole), polytetrafluoroethylene, and a resin. The self-lubricating liner has superior strength and temperature resistance, abrasion resistance, thermal conductivity, and low moisture regain.Type: GrantFiled: February 22, 2001Date of Patent: April 2, 2002Assignee: New Hampshire Ball Bearings, Inc.Inventor: Grant Drew
-
Publication number: 20020018605Abstract: A method of forming a bearing comprising adding an aqueous colloidal dispersion of at least one particulate material to an aqueous dispersion of polytetrafluoroethylene. The method also comprises mixing the dispersions for a period sufficient to allow the polytetrafluoroethylene to coagulate to form a mush, spreading the mush onto a support, and curing the mush to form a bearing lining layer on the support.Type: ApplicationFiled: July 12, 2001Publication date: February 14, 2002Inventor: Julie Ann McDonald
-
Patent number: 6332716Abstract: A polytetrafluoroethylene is added to a base resin consisting essentially of polyether ether ketone so that the proportion of polytetrafluoroethylene becomes 0.1 to 50% by weight based on the resin layer and dispersed in the form of particles in the base resin, whereby when the resulting resin layer is bonded to a backing metal to form a composite bearing, the peel strength of the resin layer per se and mechanical strength such as bonding force or the like between the backing metal and the resin layer can be inhibited from being deteriorated. When polytetrafluoroethylene having a molecular weight of 300,000 to 500,000 is used, it can be more easily dispersed in the form of particles in the base resin.Type: GrantFiled: December 2, 1999Date of Patent: December 25, 2001Assignee: Daido Metal Company Ltd.Inventors: Eiji Kato, Katsumi Sawano, Takayuki Shibayama
-
Patent number: 6305847Abstract: In a sliding bearing in which a bearing metal layer is covered with a coating layer, the coating layer comprises a thermosetting resin as a base resin and soft metal particles dispersed in the base resin in an amount of 0.1 to 10% by volume based on the volume of the coating layer. The soft metal is harder than the base resin and has a higher thermal conductivity than the base resin, so that the wear resistance and anti-seizure property of the sliding bearing are improved. In particular, when the soft metal particles are of copper, silver, tin, zinc or the like, the soft metal particles react with the sulfur contained in a lubricating oil to form a thin metal sulfide film excellent in lubricity on the surface of the particles, whereby the coefficient of friction is made smaller.Type: GrantFiled: December 9, 1999Date of Patent: October 23, 2001Assignee: Daido Metal Company Ltd.Inventors: Takuya Tanaka, Nobutaka Hiramatsu, Akira Ono, Koichi Yamamoto, Takayuki Shibayama
-
Patent number: 6296392Abstract: A plain bearing comprises a metal backing, a layer of a porous matrix of sintered metal on the backing and a filled PTFE infiltrated into the interstices of the sintered layer and standing proud of the sintered layer, wherein the PTFE is filled with 1-20% by volume fibrillated aramid fibres and 10-30% by volume glass. The glass is preferably E-glass present as milled filaments of length 0.05-0.30 mm and diameter 0.010-0.020 mm and coated with a silene sizing agent. The fibrillated aramid fibres provide reinforcement and improved load bearing capacity and the glass provides an abrasive filler which abrades asperities on a body and creates a smooth polished surface against which to bear, thereby improving its life. The PTFE preferably also includes ferric oxide and carbon black to about 1.5% and 1.2% by volume respectively which both pigment the polymer and act as an abrasive and lubricant respectively. The carbon black content may be increased to about 10% to provide electrical conductivity.Type: GrantFiled: July 28, 1999Date of Patent: October 2, 2001Assignee: Dana CorporationInventors: Kenneth Macleod McMeekin, Janette Johnston
-
Publication number: 20010016091Abstract: A multi-layer seal and washer that provide a seal between a vane stem and a casing in a turbine engine are disclosed. The seal and washer are fabricated from materials such as Teflon fibers and glass fibers and are impregnated with a polyimide resin. The seal and washer are durable and have a low coefficient of friction.Type: ApplicationFiled: March 29, 2001Publication date: August 23, 2001Inventors: Thomas C. Mesing, Wayne R. Bowen, David B. Hester
-
Patent number: 6264369Abstract: A multi-layer seal and washer that provide a seal between a vane stem and a casing in a turbine engine are disclosed. The seal and washer are fabricated from materials such as Teflon fibers and glass fibers and are impregnated with a polyimide resin. The seal and washer are durable and have a low coefficient of friction.Type: GrantFiled: January 29, 1999Date of Patent: July 24, 2001Assignee: General Electric CompanyInventors: Thomas C. Mesing, Wayne R. Bowen, David B. Hester
-
Patent number: 6139261Abstract: A bushing assembly as a means to enable guided movement of a shaft in an opening of a housing comprises a stationary bushing support carried by a housing internal wall. The bushing support has a support internal wall defining a bushing support opening through the bushing support to receive a movable shaft. Carried by the shaft is a removable wear sleeve having a wear sleeve outer wall in juxtaposition with and spaced apart from the support internal wall to permit relative axial movement of the wear sleeve with the shaft within the bushing support opening. Disposed between and for contact with the support internal wall and with the wear sleeve outer wall is an anti-friction layer.Type: GrantFiled: April 16, 1999Date of Patent: October 31, 2000Assignee: General Electric CompanyInventors: Michael J. Bishop, Andrew J. Lammas, James E. Rhoda
-
Patent number: 6139115Abstract: A wheel hub to be used in a golf motor caddie, has an axle; an outer tube, having a first end with a small opening, a second end with a large opening and three sections containing a first, a second and a third chambers, with an inner circular groove cut into the outer tube close to the second end; an inner tube, surrounding the axle; a first, plastics bearing, inserted in the first chamber; a second bearing, inserted in the second chamber; a third, oil-lubricated bearing, inserted in the third chamber; and a C-shaped washer, laid into the groove, for securing the third bearing. The outer tube is a common outer layer for all bearings. The first and second bearings enclose the inner tube, while the third, oil-lubricated bearing directly encloses the axle, such that no uneven distribution of forces and no eccentric rotation occur.Type: GrantFiled: January 6, 1999Date of Patent: October 31, 2000Inventor: Daniel Chao-Chih Hsieh
-
Patent number: 6114035Abstract: A PTFE fiber that is adapted to be sewn at high speeds. The fiber has a toughness greater than about 0.36 grams per denier (g/d). A range for the toughness is from about 0.36 to about 1.01 g/d, with a preferred range being from about 0.50 to about 0.80 g/d. The toughness of the inventive PTFE fiber is most preferably about 0.60 g/d. The inventive fiber has a peak engineering stress greater than about 1.6 g/d and a break strain greater than about 15.5 percent. A preferred range for the peak engineering stress is from about 3.0 g/d to about 5.0 g/d, and a preferred range for the break strain is from about 20 percent to about 50 percent. Most preferably, the peak engineering stress is about 4.4 g/d, and the break strain is about 24 percent. In another aspect, this invention provides a process for making a fiber that involves providing a PTFE fiber and heating the PTFE fiber to a temperature of from about 300.degree. C. to about 500.degree. C.Type: GrantFiled: September 23, 1999Date of Patent: September 5, 2000Assignee: Gore Enterprise Holdings, Inc.Inventors: Thomas Patrick Kelmartin, Jr., George M. Roberts, John W. Dolan, Raymond B. Minor
-
Patent number: 6068931Abstract: A self-lubricating bearing material is described, as well as a plain bearing of such a bearing material, the performance of which, under lubricant-free conditions, is so markedly improved that pv values of up to 6 MPa/m/s are achieved in an average load and speed range. The self-lubricating bearing material comprises a PTFE-containing polymer matrix with fillers comprising PbO and at least one metal fluoride. The PbO content is from 15-55 vol. % and the metal fluoride content is from 0.1-14 vol. %. Preferred metal fluorides are CaF.sub.2, PbF.sub.2 and MgF.sub.2. The addition of further fillers such as hard materials, pigments or fibrous material is possible. The proportion of further additives may amount to up to 40 vol. % of the PbO/metal fluoride fillers.Type: GrantFiled: August 25, 1997Date of Patent: May 30, 2000Assignee: Federal-Mogul Wiesbaden GmbHInventors: Achim Adam, Karl-Heinz Grunthaler, Erich Hodes
-
Patent number: 5932049Abstract: A bearing assembly for supporting a drive shaft includes a cylindrical housing, and a plurality of elastomeric bearing sections disposed within the housing. The bearing sections are bonded to the housing by first applying a pattern of alternating parallel lines of adhesive to the inner diameter of the housing, installing the bearing sections, and inflating an airbag within the housing to thereby apply a uniform radial pressure to the inside of the housing while the adhesive cures.Type: GrantFiled: April 17, 1997Date of Patent: August 3, 1999Assignee: Duramax, Inc.Inventors: Roy Lee Orndorff, Jr., Philip Paul Brady, Warren Keith Langston
-
Patent number: 5911514Abstract: The bearing comprises a metal backing, a sintered layer on said metal backing, and a lining layer infiltrated into pores of the sintered layer and standing proud thereof to provide a bearing surface. The lining layer comprises polytetrafluoroethylene including 2 to 10% by volume of fibrillated aramid fibers.Type: GrantFiled: December 8, 1995Date of Patent: June 15, 1999Assignee: T&N Technology LimitedInventors: Glyndwr John Davies, Philip Moisey, Janette Johnston
-
Patent number: 5879791Abstract: A wet type sliding apparatus comprising a thrust bearing which operates in the presence of a lubricating liquid, wherein the thrust bearing has a sliding surface composed of a resin composition comprising a carbon fiber, a fluorocarbon polymer and a thermoplastic resin other than fluorocarbon polymer, the carbon fiber content being 10 to 45% by weight based on the weight of the composition and the fluorocarbon polymer content being 0.1 to 8.5% by weight based on the weight of the composition, the thrust bearing in said wet type sliding apparatus being excellent in wear resistance, mechanical strength and friction coefficient at the time of starting even under a high load.Type: GrantFiled: September 25, 1996Date of Patent: March 9, 1999Assignee: Daido Metal Company Ltd.Inventors: Eiji Kato, Shoji Yasunaga, Hidehiko Tamura, Tadashi Tanaka
-
Patent number: 5880043Abstract: There is described a fiber-reinforced material composed of a sheetlike textile material and a thermoset resin with a fiber content of from 30 to 70% by weight, at least 30% of the fiber being synthetic fiber.The thermoset resin is preferably a phenolic resin which contains up to 25% by weight of a fluoropolymer.The sheetlike textile material is preferably 100% synthetic fiber, in particular polyacrylonitrile fiber.There are also described a prepreg formed from the textile material and the thermosetting resin and the process for producing these articles and the use of the material for producing construction elements, in particular for hydraulic systems, by application of mechanical shaping processes.Type: GrantFiled: November 1, 1996Date of Patent: March 9, 1999Assignee: Hoechst AktiengesellschaftInventors: Georg Michael Lorenz, Elke Gebauer, Ulrich Schuster, Manfred Tschacher, Burghard Schonrogge
-
Patent number: 5798155Abstract: Composite material 19 comprising outer member 17 having ring form section and inner member 18 mounted into said outer member so as to form a unitary construction, wherein inner surface 24 of said outer member 17 and outer surface 22 of said inner member 18 are at least partially opposed to each other through a gap .delta. and wherein said members 17,18 are joined together by means of anaerobic adhesives filling said gap .delta..Type: GrantFiled: June 8, 1994Date of Patent: August 25, 1998Assignee: Yanagawa Seiko Co., Ltd.Inventors: Chuichi Yanagawa, Eigoro Tsukagoshi
-
Patent number: 5728004Abstract: A universal joint for a tilt steering column of a vehicle includes an intermediate cup pivotally coupled to an end of a driven shaft, and a bell yoke receiving the intermediate cup within a cavity of the bell yoke. A pin extends from the bell yoke into an aperture of the intermediate cup. A layered bushing is compressed between an end of the pin and the aperture of the intermediate cup. The layered bushing is comprised of a mesh main body having a radially inner sliding layer and a radially outer gripping layer.Type: GrantFiled: October 4, 1996Date of Patent: March 17, 1998Assignee: Chrysler CorporationInventor: Thomas Dziegielewski
-
Patent number: 5671653Abstract: A hydraulic axial piston machine is disclosed, having a cylinder drum which is mounted for rotation relative to a housing (1), with a bearing (3) having a slide face (4) being arranged between the circumference of the cylinder drum and the housing (1). It is desired that such a machine shall be capable of operating also with fluids that are not such good lubricants as hydraulic oil. For that purpose the slide face (4) is formed by a friction-reducing plastics material and has at least one recess (5, 6, 7) communicating with at least one end edge of the slide face (4).Type: GrantFiled: June 26, 1996Date of Patent: September 30, 1997Assignee: Danfoss A/SInventors: Lars Martensen, Henry Madsen M.o slashed.ller
-
Patent number: 5635124Abstract: The present invention is an expanded polytetrafluoroethylene (PTFE) fiber with improved handling properties. Unlike previous expanded PTFE fibers, the fiber of the present invention employs a fiber of increased thickness so that the fiber is maintained in an unfolded orientation. The improved processing steps of the present invention create a fiber that has a number of improved properties, including more uniform dimensions along its length, improved compressibility and handling, and when woven into a fabric, the fabric is more easily processed, is of higher quality, and is more uniform.Type: GrantFiled: June 1, 1995Date of Patent: June 3, 1997Assignee: W. L. Gore & Associates, Inc.Inventors: Brad F. Abrams, Raymond B. Minor, Gordon L. McGregor, John W. Dolan
-
Patent number: 5568983Abstract: A sleeve bearing for use on rotary valve shafts subjected to substantial operating pressures sufficient to extrude PTFE includes a cylindrical nonmetallic bearing jacket, preferably composed from PEEK. The bearing jacket has a cylindrical inner cavity defined between opposite annular cavity end lips within which cavity is disposed a cylindrical PTFE liner. The annular cavity end lips on the inner surface of the cylindrical nonmetallic bearing jacket extend inwardly to an end lip surface wherein the diameter of said end lip surface is slightly larger than the diameter of the rotary shaft of the control valve. A suitable adhesive is used to bond the liner to the bearing jacket. The cavity end lips maintain the liner in position if the adhesive fails. The end lip construction and the close clearances between the end lips and the rotary shaft enable the PTFE liner to carry greater load than in other PTFE bearing constructions before beginning to extrude PTFE.Type: GrantFiled: June 21, 1994Date of Patent: October 29, 1996Assignee: Fisher Controls International, Inc.Inventor: Robert T. Wilson
-
Patent number: 5540111Abstract: Drive apparatus and method for converting linear motion to rotary motion and vice versa are disclosed. The drive apparatus includes a rack having a plurality of spaced first engagement members arranged single file in a first path and a sprocket having a plurality of spaced second engagement members arranged single file in a second path. The rack's engagement members engage the sprocket's engagement members to rotatingly drive the sprocket when the rack is driven and drive the rack when the sprocket is driven. In addition, either the rack's engagement members or the sprocket's engagement members have outer surfaces which are defined by a member selected from the group consisting of cylindrical bearings and reduced friction material. To operate the apparatus to drive a sprocket, a downstroke is made with the rack to move it as far as it can be moved in a first predetermined direction which rotates the sprocket in a desired clockwise or counter-clockwise direction.Type: GrantFiled: October 3, 1994Date of Patent: July 30, 1996Assignees: Franklin E. Barnett, Brian D. SmithInventors: Franklin E. Barnett, Brian D. Smith
-
Patent number: 5470414Abstract: A method of making a filament wound flat stock member and the filament wound flat stock member made by that method. A low fraction bearing surface is formed on a support having a flat surface by placing a self-lubricating material on the flat surface. A matrix is formed upon the self-lubricating material by winding thereon a resin-impregnated filamentous material. The winding is continued until a desired outer matrix dimension is obtained and the resin is cured to bond the materials together into a hardened stock member. The hardened stock member is removed from the flat of the support to provide a filament wound flat stock member having an exposed bearing surface of the self-lubricating material.Type: GrantFiled: October 4, 1993Date of Patent: November 28, 1995Assignee: Rexnord CorporationInventors: Bernard Harris, Dennis E. Bozych
-
Patent number: 5462381Abstract: A novel bushing for use with industrial equipment such as a gear box is disclosed as being particularly adapted for long time usage in an adverse corrosive environment, such as salt water. The bushing is coated on all exposed surfaces with a fluorocarbon poller which is tough, resilient and is unaffected by the harsh environment. Preferably, the fluorocarbon is a polytetrafluoroethylene, and if applied as a first layer directly to the metal bushing, also includes a thermoset binder material such as a phenolic. Top or outer coatings may also be applied and such coatings do not contain a binder. A mechanical advantage is provided for assembly and disassembly as well as protection for the element.Type: GrantFiled: November 16, 1994Date of Patent: October 31, 1995Assignee: Reliance Electric Industrial CompanyInventors: Gary DeWachter, John K. Newton
-
Patent number: 5431500Abstract: A bearing comprising a substratum having a configured external surface to which a self-lubricating material is integrally bonded to provide a self-lubricating bearing surface produced by the method of: applying a layer of self-lubricating resin penetrable bearing material onto the configured external surface; providing a hardenable liquid resin to coat and penetrate the bearing material; applying an overlayment of filaments onto the layer of bearing material to exert a bonding pressure on the layer of bearing material sufficient to cause the layer of bearing material to conform and bond to the configured external surface; hardening the resin; and removing at least part of the overlayment of filaments after the resin has hardened to expose at least selected portions of the layer of self-lubricating bearing material.Type: GrantFiled: August 26, 1992Date of Patent: July 11, 1995Assignee: Rexnord CorporationInventors: Bernard Harris, Dennis E. Bozych
-
Patent number: 5417499Abstract: A fabric lined bushing is formed by placing a braided liner around a mandrel coating the liner with an adhesive and injection molding an elastomeric bushing material around the adhesive coated braided liner. The braided liner is formed from polyester fibers and polytetrafluoroethylene fibers. Molding the elastomeric material under pressure around the braided liner while positioned on a mandrel tends to stretch the braided liner binding it more tightly to the mandrel and preventing the elastomeric material from penetrating the liner. The interior surface of the bushing is primarily the braided liner material which reduces noise and decreases wear.Type: GrantFiled: March 31, 1993Date of Patent: May 23, 1995Assignee: Eagle-Picher Industries, Inc.Inventors: William Jacques, Frederick Jeffrey
-
Patent number: 5271723Abstract: Oil pump manufacture is simplified by providing the pump body with a planar unstepped face and achieving radial location by the provision of a bush 22 (FIG. 2) on the pump driven shaft 14, which bush is received in the counterbore 24 of the part journalling the drive shaft 16, i.e. the cylinder block adjacent the end of the drive shaft (crankshaft).Type: GrantFiled: April 2, 1992Date of Patent: December 21, 1993Assignee: Concentric Pumps LimitedInventor: Steve Hodge
-
Patent number: 5229198Abstract: A low-friction bearing material includes a matrix formed by a wire mesh screen which is fused to a metal backing sheet. Polytetrafluoroethylene or other polymeric resin fills the interstices within the screen and between the screen and the backing sheet and locks itself rigidly to the screen and the backing sheet in order to impart high strength to the bearing material.Type: GrantFiled: May 18, 1992Date of Patent: July 20, 1993Assignee: Pacific Bearing Co.Inventor: Robert Schroeder
-
Patent number: 5129739Abstract: A bearing with dynamic pressure grooves includes an outer cylinder made of a metal and a resin sheet bonded to the inner peripheral surface of the outer cylinder. The resin sheet is made of a thermoplastic resin, for example, a polytetra fluoroethylene, as a main component mixed with a wear-resistant improving material, for example, graphite or the like. The resin sheet is formed with a pattern of dynamic pressure generating grooves formed in an inner surface by plastic work. The pattern of grooves is varied depending on the types of relative movement between the outer cylinder and a shaft body, i.e., whether an axial linear movement, a rotational movement, or a spiral movement.Type: GrantFiled: December 13, 1991Date of Patent: July 14, 1992Assignee: Nippon Seiko Kabushiki KaishaInventors: Hiromitsu Asai, Hiromi Sugi, Takashi Nagato
-
Patent number: 5118070Abstract: A rubber mount for a stabilizer bar. A rubber mount used for mounting a stabilizer bar to the frame of a motor vehicle having a solid sleeve of low friction material inserted in the bore on the mount to allow the stabilizer bar to rotate freely and noiselessly within the mount. The sleeve being bonded or secured to the elastic or rubber support contained by a U-shaped bracket secured to the motor vehicle frame.Type: GrantFiled: May 16, 1991Date of Patent: June 2, 1992Assignee: Flexible Products Co.Inventor: Glenn J. Reid
-
Patent number: 5028151Abstract: A bearing assembly suitable for use in a wet or harsh chemical environment including a support housing having a bore therein and a bearing insert received in said bore, exterior surfaces of said housing and interior surfaces defining said bore having tough, durable coatings of fluorocarbon polymer to render same resistant to corrosive chemical attack during usage in the good and chemical industry and the method of making the same, and to permit said bearing insert to self-seat in said bore.Type: GrantFiled: December 18, 1989Date of Patent: July 2, 1991Assignee: Reliance Electric CompanyInventor: Donald L. Nisley
-
Patent number: 5017095Abstract: A bearing comprising a body of polymeric material and a reinforcing member embedded in the body and having a plurality of perforations throughout which are affixed in the reinforcing member. The polymeric material extends through the perforations. The bearing may have various configurations. The reinforcing member may comprise a thin metal sheet having perforations therein, a woven metal body defining the perforations, or adjacent woven metal bodies each having perforations. In one form, a backing member is adhered to on one side of said reinforcing member. Where a thin metal sheet is used, it has a roughened surface finish at the interface with the plastic body.Type: GrantFiled: July 17, 1989Date of Patent: May 21, 1991Assignee: Vickers, IncorporatedInventors: Roy T. Burgess, Gregory P. Campau, Leslie M. Claar, Robert C. Hodges, Douglas G. Snow, Roy Taylor
-
Patent number: 4976550Abstract: A plastic bearing is provided, as well as a method of fabricating these bearings, in which a number of strands of expanded polytetrafluoroethylene fibers are woven about a cylindrical mandrel to form a fabric about this mold surface. The fabric is then impregnated with a hardenable plastic. The plastic is hardened and the bearing is removed from the mold surface. The resulting plastic bearing has greatly improved wear resistance which permits new applications.Type: GrantFiled: August 3, 1987Date of Patent: December 11, 1990Assignee: Plas/Steel Products, Inc.Inventor: James P. Shobert
-
Patent number: 4972764Abstract: In a combination of sliding members which are suitable for use in the compressor for an automotive air conditioner, one of the members consists of an aluminum alloy which contains silicone particles consisting solely of eutectic silicon; and the other sliding member consists of a fluoride resin which contains carbon fibers and a calcium compound. The surface of the aluminum alloy can be finished to a desired smoothness as it does not contain any excessively hard substance. Also, since a calcium compound which is intermediate between carbon fibers and teflon resin in hardness is distributed in the teflon resin, the tendency of the carbon fibers to attack the aluminum alloy is reduced, and the aluminum alloy can achieve a sufficient wear resistance even though it does not contain any primary crystal silicon particles having a high hardness. Furthermore, the calcium compound serves as a lubricant, and reduces friction between the two sliding members.Type: GrantFiled: October 6, 1989Date of Patent: November 27, 1990Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tadashi Ohya, Atsushi Takai
-
Patent number: 4938121Abstract: The space within the interior cavity (7) of the piston (1) limited by the partially spherical head (5) of the connecting rod (6) is filled with a viscous, pasty or plastically ductile fluid (13), practically incompressible at the operating temperatures and pressures of the piston (1), the diameter (D) of the cylindrical support (8) which limits laterally the cavity (7) being very slightly greater than the diameter (d) of the partially spherical head (5) of the connecting rod (6) so that the clearance during operation between said support (8) and said head (5) is sufficiently minor to prevent any leakage of said fluid (13) from said space at the operating temperatures and pressures of the piston.Type: GrantFiled: August 29, 1988Date of Patent: July 3, 1990Inventor: Jean F. Melchior
-
Patent number: 4865467Abstract: A roll-formed bushing for sliding surface bearings has no machining allowance in the bearing bore and is made of a strip section and has a butt joint that extends throughout the width of the bearing. In order to reduce the allowances of the bore diameter and the outside diameter of the bearing bushing, the butt joint has been closed by charge carrier beam welding.Type: GrantFiled: August 22, 1988Date of Patent: September 12, 1989Assignee: Kolbenschmidt AktiengesellschaftInventors: Karl Becker, Alfred Berger, Joachim Iwansky, Roland Koble, Karl Back
-
Patent number: 4846590Abstract: A spherical bearing comprises an outer ring and an inner ring located inside the outer ring to be slidable, the outer ring is prepared by casting molten metal around a resin-made sheet to be coated on the inner ring. A liner disposed between the inner and outer ring comprises a liner body and a metallic mesh member embedded in the liner body, and the molten metal is filled in meshes in the mesh member so as to partially bite the inner peripheral portion of the outer ring to achieve the firm engagement of the liner with the outer ring.Type: GrantFiled: July 1, 1988Date of Patent: July 11, 1989Inventor: Hiroshi Teramachi
-
Patent number: 4840395Abstract: A rod for the suspension system of a motor vehicle such as a bus which maintains fixed points of the chassis and frame or body in a fixed point to point alignment in the vehicle suspension system comprising a rod having openings at each end for an interference fit attachment to predetermined points or dowels, in which the openings are defined by a freely rotating bushing that is surrounded by a concentric cast polyurethane interface that is bonded to an inner concentric circular opening surface at the end of the rod. The rod is a replacement for transit bus torque rods.Type: GrantFiled: August 21, 1986Date of Patent: June 20, 1989Inventor: George Sturmon
-
Patent number: 4820140Abstract: The invention comprises a rotary pump with sliding vanes with a self-lubricating solid coating covering the exterior end facing surfaces of the rotor and end facing surfaces of air transfer end plates. Additionally disclosed herein is a rotary pump with sliding vanes with a pair of bushings centrally located in the rotor with the internal bearing facing surfaces of the bushings covered with a self-lubricating solid coating.Type: GrantFiled: October 26, 1987Date of Patent: April 11, 1989Assignee: Sigma-Tek, Inc.Inventor: Jerry B. Bishop
-
Patent number: 4809631Abstract: A bearing assembly for use on a rudder shaft of a vessel or boat wherein the shaft has a thin cylindrical rubber sleeve that encompasses it. The outer peripheral surface of the rubber sleeve is bonded to a fiberglass ring which is bonded to an elongated annular rubber member which is in sliding contact with the inner peripheral surface of a teflon ring which is turn is bonded to the inner peripheral surface of a fiberglass sleeve. The latter sleeve in turn is bonded to the inner periphery of the upper end of a housing that is attached to the hull of a vessel. The lower portion of the rudder shaft has secured to it an annular rubber bearing that is in frictional sliding contact with a teflon ring that is secured to the inner peripheral surface of the lower end of the housing.Type: GrantFiled: February 1, 1988Date of Patent: March 7, 1989Assignee: The B. F. Goodrich CompanyInventor: James H. Kramer
-
Patent number: 4802430Abstract: A bearing assembly for use on a rudder shaft of a vessel or boat wherein the shaft has a thin cylindrical rubber sleeve that encompasses it. The outer peripheral surface of the rubber sleeve is bonded to a fiberglass ring which is bonded to an elongated annular rubber member which is in sliding contact with the inner peripheral surface of a teflon ring which in turn is bonded to the inner peripheral surface of a fiberglass sleeve. The latter sleeve in turn is bonded to the inner periphery of the upper end of a housing that is attached to the hull of a vessel. The lower portion of the rudder shaft has secured to it an annular rubber bearing that is in frictional sliding contact with a teflon ring that is secured to the inner peripheral surface of the lower end of the housing.Type: GrantFiled: October 26, 1987Date of Patent: February 7, 1989Assignee: The B. F. Goodrich CompanyInventor: James H. Kramer
-
Patent number: 4762330Abstract: A sealing ring, having a ring body made, for example, of high-temperature resistant compressed metal fibers includes a roughened surface adapted to be pressed against and displaced by sliding relative to a counter-face.Type: GrantFiled: April 10, 1986Date of Patent: August 9, 1988Assignee: Goetze AGInventors: Klaus Lonne, Klaus-Peter Majewski, Franz-Josef Giesen, Rudiger Voigt
-
Patent number: 4739695Abstract: A fluid-pressure-operable actuator system, for operating an aerodynamic control surface, including an actuator comprising a casing, piston and output member. Annular sealing means carried by the piston sealingly engages with the casing while annular sealing means disposed in an aperture through which the output member extends sealingly engages that member. Bearing means circumferentially flank the sealing means of the piston and/or the aperture and include parts of readily- and locally-deformable material, respectively in relatively-slidable load-bearing engagement with the casing and/or the output member. In the event that damage is sustained by the surface of the actuator engaged by the sealing means the bearing means is sufficiently deformed as to permit relative movement of the casing and output member to continue under the power of at least one other actuator associated with said control surface.Type: GrantFiled: April 15, 1986Date of Patent: April 26, 1988Assignee: Dowty Boulton Paul LimitedInventors: Arthur D. Mountney, James Roper
-
Patent number: 4688688Abstract: A jib crane system comprising a horizontally extending load beam rigidly attached to the upper end of a vertically extending mast. The lower part of the mast is positioned inside a hollow structure such as a pipe and is rotatably associated therein, and spaced from the inside surface of the pipe. A bearing boot is rigidly secured to the mast and in frictional contact with the inside surface of the pipe. The bearing boot slides around the inside circumference of the pipe in a circular or arcuate path as the mast and load beam revolve around the central axis of the mast. The bearing boot includes an outer arcuate concave contacting plate having substantially the same radius as the inside convex surface of the pipe. A ring of foil may be secured on the inside of the pipe for providing the sliding surface for the bearing boot. The mast may comprise a flanged beam having a pair of side walls with a web portion therebetween.Type: GrantFiled: August 21, 1985Date of Patent: August 25, 1987Assignee: Handling Systems, Inc.Inventors: John G. Volakakis, Robert L. McNelis, Burt H. Wallentim
-
Patent number: 4666318Abstract: A bearing, such as a plain spherical self-aligning bearing, has a reinforced low-friction woven plastics element (for example comprising ptfe) which is in sliding contact with a very hard, very smooth counterface. The bearing exhibits reduced wear when subjected to low-stress, small-amplitude motions.Type: GrantFiled: August 21, 1985Date of Patent: May 19, 1987Assignee: Ampep, plcInventor: Michael B. Harrison
-
Patent number: 4659952Abstract: In a stepping motor comprising a stator including a plurality of stator plates, and a rotor made of a permanent magnet, a coating layer made of a nonmagnetic material is applied to the stator plates, and the rotor is rotated within the stator plates while the rotor is maintained in a closely adjacent relation contactable with the coating layer of the stator plates.Type: GrantFiled: July 7, 1986Date of Patent: April 21, 1987Assignee: Alps Electric Co., Ltd.Inventors: Naoki Unjo, Takamichi Fuke
-
Patent number: 4626112Abstract: A bearing assembly for use with a marine propeller wherein a rigid bushing is adapted to be connected to a drive shaft for rotation therewith, while an annular elastomeric ring in radial compression has its inner surface bonded to such bushing. The outer surface of such deformed elastomeric ring is in frictional engagement with an anti-functional cylindrical member which in turn is connected to a plurality of circumferentially spaced propellers via a hub.Type: GrantFiled: January 27, 1984Date of Patent: December 2, 1986Assignee: The B.F. Goodrich CompanyInventor: James H. Kramer
-
Patent number: 4615171Abstract: Bicycle Chain is made of alternating bushing links and pin links. The bushing links have parallel bushings held in interference fit in bushing plates and extended axially beyond the bushing plates, solid metal rolls with a lubricating plating are held loosely on the bushings, and loosely between the bushing plates. The bushings extend axially outward beyond the bushing plates for substantial distances. Pins extend through the bushings and are fixed in pin plates to form pin links which alternate with the bushing links. The pin plates are held outward from the bushing plates for a substantial amount by the axial bushing extensions to prevent dirt build up. The pin plates, bushing plates and bushings are plated with an anti-corrosion plating. The pins and rolls are plated with a porous metal plating with solid polymeric lubricant held within pores of the plating for lubricating the pin-bushing interior interface and for lubricating the roll-bushing and roll-bushing plate interfaces.Type: GrantFiled: November 25, 1985Date of Patent: October 7, 1986Assignee: Incom International Inc.Inventor: Robert G. Burk
-
Patent number: 4614104Abstract: A support for a reciprocating ram wherein a plurality of rollers having angularly related generally cylindrical support surfaces are mounted in a fixed location and the ram is provided with planar surfaces having the same corresponding angular relationship wherein the weight of the ram is utilized to maintain the planar surfaces in contact with the generally cylindrical support surfaces during reciprocal movement of the ram with dampening means being provided to minimize vibrations. An additional force is applied to the ram to ensure a rolling relationship between the planar and generally cylindrical surfaces at all times during the reciprocal movement.Type: GrantFiled: January 13, 1986Date of Patent: September 30, 1986Assignee: Ball CorporationInventor: David A. Straw
-
Patent number: 4603982Abstract: A bearing having an outer race defining an internal channel and an inner race having integrally formed protrusions which extend into the outer race channel for load bearing support.Type: GrantFiled: February 21, 1985Date of Patent: August 5, 1986Assignee: Auscilla Plastics, Inc.Inventor: Patrick E. Dittrich
-
Patent number: H295Abstract: A shift fork support structure in a manual transmission of such a type that a shift fork is axially slidable on a fork shaft comprising a bushing press-fitted into apertures formed on the shift fork and engaging the fork shaft. The inner peripheral surface of the bushing is coated by Teflon layer. With this structure, the frictional resistance between the shift fork and the fork shaft may be reduced, thus permitting the shift fork to be smoothly operated.Type: GrantFiled: October 1, 1985Date of Patent: July 7, 1987Assignee: Toyota Jidosha Kabushiki KaishaInventors: Akio Numazawa, Hajime Arai, Shozi Haga, Tadashi Nozaki