Plastic Patents (Class 384/909)
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Patent number: 12188520Abstract: A rolling bearing assembly includes an inner ring and an outer ring that are coaxial about an axis of rotation and between which rolling elements are arranged. An annular metal rolling bearing cage is centered about the axis of rotation and arranged radially between the inner ring and the outer ring, the annular cage having recesses for retaining rolling elements, an outer annular face facing the outer ring, and an inner annular face facing the inner ring. At least one insert at least one tubular portion engaged in a recess of the annular cage, a tubular portion of the insert being connected at one radial end to a rim arranged in abutment against the inner annular face or the outer annular face of the annular cage. A latching means on the insert cooperates with a latching means in the annular cage to hold the insert in a recess.Type: GrantFiled: July 9, 2021Date of Patent: January 7, 2025Assignee: SAFRAN AIRCRAFT ENGINESInventor: Geoffray Fernand Jacques Deterre
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Lever gear for a wheel wind deflector and method for operating a lever gear with overload protection
Patent number: 11840287Abstract: The invention relates to a lever system for a wheel wind deflector which is fitted to a vehicle, having a first lever and a second lever which are rotatably connected to each other by means of an articulation, wherein the articulation contains at least one ball in a sleeve, a spring and a support, wherein the ball is guided on an outer contour of the second lever.Type: GrantFiled: August 13, 2021Date of Patent: December 12, 2023Assignee: MAGNA EXTERIORS GMBHInventor: Bernd Knauer -
Patent number: 11802542Abstract: A rotor blade for a wind turbine includes a first blade segment and a second blade segment extending in opposite directions from a chord-wise joint. Each of the first and second blade segments includes at least one shell member defining an airfoil surface. The rotor blade also includes one or more pin joints for connecting the first and second blade segments at the chord-wise joint. The pin joint(s) includes one or more pin joint tubes received within the pin joint slot(s). The pin joint slot(s) are secured within a bearing block. Further, a gap is defined between the pin joint slot(s) and the bearing block. Moreover, the rotor blade includes a shim within the gap between the pin joint slot(s) and the bearing block so as to retain the pin joint slot(s) within the bearing block. In addition, the shim is constructed of a liquid material that hardens after being poured into the gap.Type: GrantFiled: November 1, 2018Date of Patent: October 31, 2023Assignee: General Electric CompanyInventors: Rohit Agarwal, Andrew Mitchell Rodwell, Amir Riahi, Mohammad Salah Attia, Donald Joseph Kasperski, Jianqiang Chen
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Patent number: 8840308Abstract: A bushing can include a load bearing substrate having a first major surface, an adhesive film overlying the first major surface, and a friction reducing layer overlying the adhesive film. A method can include extruding an adhesive film, laminating a friction reducing layer to a load bearing substrate with the adhesive film therebetween to form a composite, and shaping the composite to form a bushing. The adhesive film can include a first adhesive layer, such as and a fluoropolymer layer. The adhesive layer can include a modified ethylene tetrafluoroethylene, and the fluoropolymer layer can include an ethylene tetrafluoroethylene.Type: GrantFiled: November 18, 2011Date of Patent: September 23, 2014Assignee: Saint-Gobain Performance Plastics CorporationInventors: Paul W. Ortiz, Julia DiCorleto Gibson
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Patent number: 8771836Abstract: It is an object of the present invention to provide a resin composition whose flowability is secured when the resin composition is injection-molded into injection-molded articles such as a resin-made crown-shaped cage and a resin-made seal both for a rolling bearing and a resin-made sliding bearing and which is capable of enhancing the mechanical strengths and toughnesses of these injection-molded articles to such an extent that these injection-molded articles can be used as bearing members. The resin composition is formed into a molded article and used as a bearing member. The resin composition is composed of polyamide resin or polyester resin to which polycarbodiimide is added. The polyamide resin is at least one resin selected from among polyamide 66 resin and polyamide 11 resin. The polyester resin is polytrimethylene terephthalate resin. 0.5 to 6 wt % of the polycarbodiimide is contained in an entirety of the resin composition.Type: GrantFiled: July 29, 2010Date of Patent: July 8, 2014Assignee: NTN CorporationInventors: Yoshihide Himeno, Masaki Egami, Eiichirou Shimazu
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Patent number: 8672556Abstract: The present invention provides a member, for a resin-made rolling bearing, which has a low extent of a moisture absorption-caused change in its dimension and mechanical properties, keeps sufficiently high mechanical properties after the member absorbs moisture, and is excellent in its resistance to hydrolysis, grease deterioration, and heat and also provides the rolling bearing in which the member for the rolling bearing is used. A rolling bearing (7) has an inner ring (8), an outer ring (9), a plurality of rolling elements (10) interposed between the inner ring (8) and the outer ring (9), a crown-shaped cage (11) for retaining the rolling elements (10), and a seal (12) covering an opening disposed at a gap between the inner ring (8) and the outer ring (9). The cage (11) and the seal (12) are moldings of a resin composed of polyphthalamide resin.Type: GrantFiled: May 10, 2013Date of Patent: March 18, 2014Assignee: NTN CorporationInventors: Yoshihide Himeno, Kouya Oohira, Masaki Egami
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Patent number: 8267587Abstract: A housing for a fluid lubrication bearing apparatus is formed of a resin composition containing polyphenylene sulfide (PPS) as a base resin. The ratio of the base resin to the resin composition is not lower than 40 vol % but not higher than 70 vol %. Moreover, in the composition, an epoxy compound having two or more epoxy groups per molecule of the compound and epoxy value of 0.5 meq/g or more to the resin composition may be added so that the amount of epoxy groups in the resin composition is 8 meq/100 g or more. A carbon fiber may also be added to the resin composition in an amount of not less than 10 vol % but not more than 35 vol %. An inorganic compound may be further added to the resin composition to be the remainder of the resin composition.Type: GrantFiled: April 11, 2006Date of Patent: September 18, 2012Assignee: NTN CorporationInventors: Kazutoyo Murakami, Masaki Egami
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Patent number: 7766553Abstract: An inventive ball bearing retainer (4) is entirely composed of a resin composition, and has pocket surfaces (6) for retaining balls (5) and projections (8) provided on the pocket surfaces (6) and containing a solid lubricant (CB). A ball bearing (1) incorporates the ball bearing retainer (4). By the effect of the solid lubricant (CB), the projections (8) are less liable to be worn out in a short period particularly when the ball bearing (1) is used in a higher temperature environment. The projections (8) define clearances between the balls (5) and the pocket surfaces (6), making it possible to maintain the effect of preventing noise, increase in the torque of the ball bearing (1), reduction of the service life of a lubricant and the like for a longer period of time.Type: GrantFiled: December 7, 2005Date of Patent: August 3, 2010Assignee: JTEKT CorporationInventors: Setsuo Nagai, Kazuki Higashida, Takeshi Tsuda
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Patent number: 7290937Abstract: A slide bearing is proposed which rotatably supports a rotary shaft of an impeller in a cooling water circulation pump mounted to a fuel cell. The slide bearing is formed of a synthetic resin containing no metal ions such as polyetherketone resin. This prevents impurities originating from the slide bearing from being dissolved into cooling water for the fuel cell.Type: GrantFiled: June 21, 2005Date of Patent: November 6, 2007Assignee: NTN CorporationInventors: Hayashi Takumi, Fukuzawa Satoru
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Patent number: 7192193Abstract: There is provided a sliding member having excellent frictional wear properties not only under non-lubrication and under oil-lubrication but also under boundary lubrication. The present invention provides a multilayer sliding member including a porous metal layer formed on a sheet of back metal and a resin layer impregnated into and coated on the porous metal layer, wherein the above described resin layer contains 1 to 25 vol % of an oxybenzoyl polyester resin, 0.1 to 5 vol % of a hard particle material, 1 to 5 vol % of an inorganic compound, and polytetrafluoroethylene. Particularly, the addition of the inorganic compound enhances the oil-retention property under boundary lubrication, so that the frictional wear properties under boundary lubrication can be improved pronouncedly.Type: GrantFiled: November 10, 2004Date of Patent: March 20, 2007Assignee: Daido Metal Company Ltd.Inventor: Hideki Iwata
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Patent number: 7160622Abstract: An oil repelling agent to coat a dynamic pressure device, such as a fluid dynamic pressure bearing device, includes a UV coloring agent, a fluorine-based polymer and a solvent. In an exemplary embodiment of the invention, the concentration of the UV coloring agent component is about 100 PPM to about 400 PPM, and the concentration of the fluorine polymer is about 0.1% by weight to about 0.6% by weight.Type: GrantFiled: September 4, 2003Date of Patent: January 9, 2007Assignee: Minebea Co., Ltd.Inventors: Akio Okamiya, Takahiko Ito
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Patent number: 7147378Abstract: A friction-reducing abrasion resistant bearing material is described. The material comprises a monolithic, porous polytetrafluoroethylene (ePTFE) having dispersed therein a wear-resistant thermosetting or thermoplastic resin material.Type: GrantFiled: February 19, 2004Date of Patent: December 12, 2006Assignee: Gore Enterprise Holdings, Inc.Inventors: Chaokang Chu, James R. Hanrahan
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Patent number: 7001077Abstract: In a bearing assembly or a gearing with a least two bearing elements or gearing elements that are adapted for movement relative to each other, at least one bearing element or gearing element comprises a polyimide coating on a carrier material.Type: GrantFiled: November 4, 2003Date of Patent: February 21, 2006Inventor: Bernd Görlach
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Patent number: 6802648Abstract: A bearing system for a rotor shaft is provided in which a bearing prepared from a high performance polymer is surrounded by an elastomer sleeve that dampens the effect of noise and vibration caused by movement of the rotor shaft against the bearing.Type: GrantFiled: July 11, 2002Date of Patent: October 12, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Philippe Merot, Jean Luc Bozet, Pierre Poysat
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Patent number: 6758381Abstract: A pinch roller device for running the tape includes a rotatable hollow cylindrical elastic member; a sleeve for holding the elastic member; a bearing integrated with the sleeve; a pinch roller shaft for rotatably supporting the bearing, which has an effective bearing face for receiving a force from the pinch roller shaft; an inclination restriction member for restricting an inclination angle of the pinch roller shaft; first and second position restriction members for respectively restricting a position of the elastic member in first and second thrusting directions; and a sliding restriction member having a circular cross-section along a plane perpendicular to a rotation center line of the elastic member and disposed at a different portion from the effective bearing face. When an angle between the rotation center lines of the elastic member and the pinch roller shaft approaches a prescribed value, the sliding restriction member contacts the inclination restriction member.Type: GrantFiled: May 9, 2002Date of Patent: July 6, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shinji Tanaka, Akio Konishi
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Patent number: 6752306Abstract: A pinch roller apparatus which can stably move a tape in accordance with a sufficient self-aligning function is provided. A circular sliding plate brought into contact with both of an upper end surface and a lower end surface of a plain bearing is mounted to a pinch roller shaft so as to restrict an incline of the plain bearing. When setting a length of an axial gap between the circular sliding plate brought into contact with the upper end surface of the plain bearing and the plain bearing to A and a length of an outer diameter of the circular sliding plate to B, the structure is made such as to satisfy a relation 0.007≦A/B≦0.06. Further, when setting a clearance in a diametrical direction between the pinch roller shaft and the sliding surface of the plain bearing to X and an effective length of the sliding surface of the plain bearing to Y, it is preferable to structure so as to satisfy the relation X/Y≧0.052.Type: GrantFiled: October 18, 2002Date of Patent: June 22, 2004Assignees: Kabushiki Kaisha, Meiji Gomu KaseiInventor: Toshihiro Okada
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Patent number: 6655842Abstract: An object of the present invention is to provide a sliding bearing having an excellent initial conformability and seizure resistance as well as desired durability and heat resistance required particularly for high speed engine. The present invention provides a sliding bearing having a resin coating layer comprising a thermosetting resin being soft and having a good elongation at high temperature and a solid lubricant formed on a bearing alloy layer.Type: GrantFiled: April 15, 2002Date of Patent: December 2, 2003Assignee: Taiho Kogyo Co., Ltd.Inventors: Hiroshi Kanayama, Toru Desaki, Kimio Kawagoe, Yasuaki Goto, Yoshio Fuwa, Hirofumi Michioka, Kenyuu Akiyama
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Patent number: 6607820Abstract: Bush 4 is fabricated by providing porous sintered metal layer 7 of copper on the surface side of back metal layer 5 of steel plate through copper plating layer 6 and coating the inside and the surface of porous sintered metal layer 7 with sliding material 8 by impregnation. Sliding material 8 comprises 1-25 vol.% of tetrafluoroethylene-perfluoroalkylvinyl ether copolymer resin, 1-25 vol.% of at least one member selected from the group consisting of oxybenzoylpolyester resin and polyimide resin and 0.1-10 vol.% of hard particles having a Mohs hardness of 4 or more and average particle sizes of 5 &mgr;m or less such as Al2O3 and SiC, the balance being polytetrafluoroethylene resin (55 vol.% or more of the total siding material) as the main component. 0.5-25 vol.% of a solid lubricant such as graphite and MoS2 can be further contained in total together with the hard particles.Type: GrantFiled: June 15, 2001Date of Patent: August 19, 2003Assignee: Daido Metal Company Ltd.Inventors: Takahiro Niwa, Eiji Kato, Nobutaka Hiramatsu, Takayuki Shibayama
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Publication number: 20030134141Abstract: There is provided a crosshead bearing for a marine engine, comprising a bearing alloy layer, and a coating layer comprising a synthetic resin which is bonded onto the bearing alloy layer, and said coating may contain at least one kind selected from the group consisting of a solid lubricant, hard particles, and a metal powder.Type: ApplicationFiled: December 17, 2002Publication date: July 17, 2003Inventors: Atsushi Okado, Yuichi Tomita, Motohira Yamada, Hidehiko Tamura
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Patent number: 6582127Abstract: Each of a sliding bearing and a rotating and sliding member according to the present invention includes an irregularity portion on its inner peripheral surface. The irregularity portion comprises projections adapted to come into contact with a rotary shaft, and recesses which are provided, so that they cannot be brought into contact with the rotary shaft to define gaps or spaces between the bearing itself and the rotary shaft. The irregularity portion is integrally formed-on the inner peripheral surface of the sliding bearing to extend in a direction of rotation of the sliding bearing, in such a manner that the recess is disposed at a central portion of the inner peripheral surface, and the projections are disposed on opposite sides of the recess.Type: GrantFiled: September 6, 2000Date of Patent: June 24, 2003Assignee: Enplas CorporationInventors: Genichi Kimizuka, Kenichi Murakami, Yasuhiro Watanabe
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Patent number: 6550972Abstract: A transport and mounting device for one or more sets of adjoining full complement cylindrical rolling elements which are disposed during transportation between an inner and an outer bushing arranged concentrically in each other, one end of each of the bushings comprising a retaining collar which is oppositely oriented to the retaining collar of the other bushing, the retaining collars of the device are arranged next to each other in axial direction and are in contact and in overlapping relationship with each other.Type: GrantFiled: October 6, 2000Date of Patent: April 22, 2003Assignee: Ina Walzlager Schaeffler oHGInventors: Werner Adolph, Rainer Wanjelik
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Publication number: 20030052150Abstract: A pinch roller apparatus which can stably move a tape in accordance with a sufficient self-aligning function is provided. A circular sliding plate brought into contact with both of an upper end surface and a lower end surface of a plain bearing is mounted to a pinch roller shaft so as to restrict an incline of the plain bearing. When setting a length of an axial gap between the circular sliding plate brought into contact with the upper end surface of the plain bearing and the plain bearing to A and a length of an outer diameter of the circular sliding plate to B, the structure is made such as to satisfy a relation 0.007≦A/B≦0.06. Further, when setting a clearance in a diametrical direction between the pinch roller shaft and the sliding surface of the plain bearing to X and an effective length of the sliding surface of the plain bearing to Y, it is preferable to structure so as to satisfy the relation X/Y≧0.052.Type: ApplicationFiled: October 18, 2002Publication date: March 20, 2003Inventor: Toshihiro Okada
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Publication number: 20020192490Abstract: A sliding bearing being improved in resistance to seizure under a high bearing pressure condition, the bearing having a lining of a copper alloy in which Ag and Sn are preset as additive metals in solid solution state and form a hexagonal compound or an eutectic between themselves or with Cu The improved bearing has a back metal having, adhered thereon, a copper alloy wherein 0.1 to 2 wt. % of Ag and 1 to 10 wt. % of Sn are present as essential metal components and the residue is composed essentially of Cu, and a surface obtained by covering a roughened surface, which is positioned on the opposite side to said back metal of copper alloy and has a roughness (R z) of about 0.5 to about 10% mgr m with an overlay of a thermosetting resin, such as a polyimide resin, a polyamideimide resin, an epoxy resin and a phenol resin, containing MoS 2 in an amount of 55 to 90 wt %.Type: ApplicationFiled: November 9, 1999Publication date: December 19, 2002Inventors: HIROSHI KANAYAMA, SHINYA KAWAKAMI, TAKASHI TOMIKAWA, SOJI KAMIYA
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Patent number: 6474869Abstract: A bushing comprising a main body that is adapted to be supported by the first member. The main body is comprised of a rigid layer and one or more other layers supported by the rigid layer. One of the layers defines an axial bore that is adapted to receive a pin that movably couples the second member to the first member.Type: GrantFiled: September 14, 2000Date of Patent: November 5, 2002Assignee: Sunrise Medical HHG Inc.Inventors: Dean R. Sommerfeld, Todd C. Kramer
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Publication number: 20020155304Abstract: A sliding bearing includes a bearing alloy layer having a sliding surface and a resin surface layer formed on the sliding surface of the bearing alloy layer and containing polybenzimidazole and a solid lubricant. In manufacturing the sliding bearing, a resin surface layer composition is applied to a roughened surface of a bearing alloy layer. The resin surface layer composition contains polybenzimidazole and a solid lubricant. The resin surface layer composition is heated so as to be hardened to be formed into a resin surface layer.Type: ApplicationFiled: February 19, 2002Publication date: October 24, 2002Applicant: DAIDO METAL COMPANY LTD.Inventors: Takuya Tanaka, Nobutaka Hiramatsu, Takayuki Shibayama
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Patent number: 6467669Abstract: A pinch roller apparatus which can stably move a tape in accordance with a sufficient self-aligning function is provided. A circular sliding plate brought into contact with both of an upper end surface and a lower end surface of a plain bearing is mounted to a pinch roller shaft so as to restrict an incline of the plain bearing. When setting a length of an axial gap between the circular sliding plate brought into contact with the upper end surface of the plain bearing and the plain bearing to A and a length of an outer diameter of the circular sliding plate to B, the structure is made such as to satisfy a relation 0.007≦A/B≦0.06. Further, when setting a clearance in a diametrical direction between the pinch roller shaft and the sliding surface of the plain bearing to X and an effective length of the sliding surface of the plain bearing to Y, it is preferable to structure so as to satisfy the relation X/Y≧0.052.Type: GrantFiled: August 4, 2000Date of Patent: October 22, 2002Assignee: Kabushiki Kaisha Meiji Gomu KaseiInventor: Toshihiro Okada
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Patent number: 6431810Abstract: This invention related to a bearing for the drive ring of a ring drive of a silo reclaimer wherein the bearing is mounted on the drive ring for bearing relation with bearing surface of the ring drive and is made of a plastics bearing material. The plastics bearing material has a coefficient of friction on its bearing surface so as to operate without lubrication in use.Type: GrantFiled: July 28, 2000Date of Patent: August 13, 2002Inventor: Richard L. Weaver
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Patent number: 6409389Abstract: A shaft integral with a rotary polygon mirror is fitted in a sleeve having dynamic-pressure generating grooves to construct a hydrodynamic bearing. A bearing surface of the sleeve is subjected to an electroconductivizing treatment through formation of a chemical conversion film, and an electrodeposition film having a lubricating filler such as a silicon-based resin, inorganic particles, or the like dispersed therein is formed thereon. The film can be formed by electrodeposition which is simpler than plating, and wear resistance and lubricity of the bearing surface can be improved remarkably. The bearing structure prevents wear from occurring during low-speed rotation.Type: GrantFiled: April 21, 2000Date of Patent: June 25, 2002Assignee: Canon Kabushiki KaishaInventors: Susumu Kadokura, Takamichi Ishino, Masayoshi Asami
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Patent number: 6367981Abstract: A retainer constituting a rolling bearing is formed by melt-molding a resin composition containing a polyvinylidene fluoride resin as a main component.Type: GrantFiled: August 24, 1999Date of Patent: April 9, 2002Assignee: NSK Ltd.Inventors: Toyohisa Yamamoto, Takahiko Uchiyama
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Publication number: 20020015839Abstract: Bush 4 is fabricated by providing porous sintered metal layer 7 of copper on the surface side of back metal layer 5 of steel plate through copper plating layer 6 and coating the inside and the surface of porous sintered metal layer 7 with sliding material 8 by impregnation. Sliding material 8 comprises 1-25 vol. % of tetrafluoroethylene-perfluoroalkylvinyl ether copolymer resin, 1-25 vol. % of at least one member selected from the group consisting of oxybenzoylpolyester resin and polyimide resin and 0.1-10 vol. % of hard particles having a Mohs hardness of 4 or more and average particle sizes of 5 &mgr;m or less such as Al2O3 and SiC, the balance being polytetrafluoroethylene resin (55 vol. % or more of the total siding material) as the main component. 0.5-25 vol. % of a solid lubricant such as graphite and MOS2 can be further contained in total together with the hard particles.Type: ApplicationFiled: June 15, 2001Publication date: February 7, 2002Applicant: DAIDO METAL COMPANY LTDInventors: Takahiro Niwa, Eiji Kato, Nobutaka Hiramatsu
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Patent number: 6315456Abstract: A bearing retainer of a synthetic resin, which can be injection molded out of a material obtained by mixing at least particles of a heat resisting reins with a thermoplastic resin, and which can thereby be manufactured at a low cost without compromise in suitability for high-rotational-speed and high-temperature applications.Type: GrantFiled: November 1, 1999Date of Patent: November 13, 2001Assignee: Koyo Seiko Co., Ltd.Inventors: Kiyoshi Tanimoto, Kunio Yanai
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Patent number: 6213647Abstract: A damping thrust bearing for vehicle steering knuckles, comprising a damping ring made of materials of low friction factor and strong impact-resistance and a ring-thrust ring. The lateral ring-form surface of said damping ring (6) has a sliding connection with the lateral ring-form surface of said thrust ring (7), so as to form a friction pair with sliding working surface (8). A shell (5), installed outside the friction pair formed by said damping ring (6) and said thrust ring (7), making the bearing an integral bearing.Type: GrantFiled: May 13, 1999Date of Patent: April 10, 2001Inventor: Zhichan Lin
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Patent number: 6203207Abstract: An inner ring 2, an outer ring 1 and a cage 4 are made of a resin composition comprising a melt-moldable fluoro-resin as a main ingredient, which can provide a rolling bearing capable of maintaining lubricity for a long period of time even when it is used in a corrosive aqueous solution or under a circumstance where mists or droplets of a corrosive solution are present.Type: GrantFiled: September 8, 1999Date of Patent: March 20, 2001Assignee: NSK Ltd.Inventors: Toyohisa Yamamoto, Hiroyuki Ito
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Patent number: 6183137Abstract: A bearing structure with a low coefficient of friction and a distinguished wear resistance is obtained by coating a shaft with a resin composition comprising PAI and 5 to 50% by weight of PTFE, based on total resin composition and/or coating a bearing with a resin composition comprising PEEK and not more than 50% by weight of PTFE, based on total resin composition. By adding potassium titanate whiskers or a lead compound to the bearing resin composition, more improved coefficient of friction and wear resistance are obtained.Type: GrantFiled: September 8, 1999Date of Patent: February 6, 2001Assignees: Daido Metal Company, Aichi Machine Industry So., Ltd.Inventors: Akira Kojima, Nobutaka Hiramatsu, Mitsuru Sugita, Akira Ono, Takayuki Shibayama, Yukitoshi Ogawa
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Linear motion ball bearing and method for forming lubricating film of the linear motion ball bearing
Patent number: 6126319Abstract: A direct-acting bearing comprising a rail in the form of a shaft, a movable body fitted slidably to it, and a plurality of rolling bodies disposed between the rail and the movable body so as to roll and circulate with the relative sliding motions thereof, characterized in that a solid film of a fluorine-containing polyurethane high molecular compound is formed on at least the rolling and sliding portions of its components.Type: GrantFiled: September 11, 1997Date of Patent: October 3, 2000Assignee: Koyo Seiko Co., Ltd.Inventors: Hiroshi Toyota, Kazunori Hayashida, Hiroaki Takebayashi -
Patent number: 6109899Abstract: A scroll compressor of the type having a cantilever mounted shaft is provided with a carbon crankcase bearing. Further, the bearing mounting the eccentric pin within the orbiting scroll is also formed of a carbon material. The bearing mounting the lower end of the shaft is further formed of the carbon material. The carbon bearing insures that the shaft will be quickly worn away should there be shaft misalignment.Type: GrantFiled: April 16, 1999Date of Patent: August 29, 2000Assignee: Scroll TechnologiesInventors: Thomas R. Barito, Jason J. Hugenroth
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Patent number: 6072660Abstract: A disk driving apparatus using a dynamic pressure-type bearing device of an oil lubrication type, wherein the bearing device includes a housing main body, a sleeve part fixed to the housing main body, a rotor part relatively rotatable to the housing main body, a shaft having a spherical front end clamped to the rotor part, a bottom plate at an end face of the shaft and a thrust member interposed between the shaft and the bottom plate has a dynamic pressure radial bearing constructed by the shaft and the sleeve part and having herringbone grooves formed at either of the shaft and sleeve part, the thrust member being formed of a high polymer, and a thrust pivot bearing constructed by the thrust member set at the bottom plate secured to one side of the sleeve part and one end of the shaft.Type: GrantFiled: July 26, 1996Date of Patent: June 6, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Hiroyoshi Teshima
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Patent number: 6050729Abstract: A compound ball bearing comprises a bearing assembly including a spindle 1, a sleeve 2 surrounding the spindle 1, and an inner ring 6 fitted on the spindle or an outer ring fitted in the sleeve, and balls 5, 9 provided between the spindle 1 and the sleeve 2, between the spindle and outer ring or between the inner ring 6 and sleeve 2. A base 16 of a motor is formed as a one-piece unit with the spindle. The vibration accuracy of the spindle 1 can be improved.Type: GrantFiled: July 29, 1996Date of Patent: April 18, 2000Assignee: Minebea Kabushiki-KaishaInventors: Rikuro Obara, Katashi Tatsuno
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Patent number: 5904426Abstract: Each of the inner and outer rings of a non-retainer type rolling bearing has a wear-resistant solid film of a fluorine-containing synthetic resin formed on its track surface. The solid film carries a very small amount of grease having a low vapor pressure, e.g. fluorine-containing grease, as an effective lubricant for the inner and outer rings, and the rolling elements held therebetween, while the solid film is also restrained from producing dust. The amount of the grease does not exceed 5% of the volume of the open space in the bearing.Type: GrantFiled: August 21, 1997Date of Patent: May 18, 1999Assignee: Koyo Seiko Co., Ltd.Inventors: Kazuo Tsuru, Tsugio Matsushita, Hiroshi Ono, Nobuhito Sakai
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Patent number: 5845997Abstract: In a roller bearing, surface layers are formed on the inner surfaces of flanges which confront with the end faces of cylindrical rollers. The surface layers contain solid lubricant. The end faces of the cylindrical rollers are brought into slide contact with the surface layers. Hence, even when the roller bearing is insufficiently lubricated, the temperature rise is effectively suppressed, thus being free from the occurrence of seizure.Type: GrantFiled: May 6, 1997Date of Patent: December 8, 1998Assignee: NSK Ltd.Inventors: Dai Kinno, Atsushi Yokouchi
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Patent number: 5845998Abstract: A ball bearing assembly includes a polymer outer bearing ring molded over and partially enclosing a metal annular outer raceway. The metal annular outer raceway may be economically formed from sheet metal or wire. The polymer outer bearing ring may be mounted within a metal housing to provide support and/or self-alignment capability.Type: GrantFiled: November 27, 1996Date of Patent: December 8, 1998Assignee: The Torrington CompanyInventors: John A. Larson, Maksimilijan Godec, Walter P. Waskiewicz
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Patent number: 5718466Abstract: A racking resistant door control mechanism for securing a pivoted door employs an elongate lock rod that extends the height of the door and is journaled for pivotal movement by bearing assemblies having steel covers that enclose plastic bearing liners. The lock rod has upper and lower cam-type latch members welded to its opposite ends for engaging keeper members carried by upper and lower parts of a door frame for holding the door closed. The lock rod extends through and is welded to a steel sleeve at a location spaced a short distance upwardly from the lower latch member. If the lock rod is formed from two elongate elements instead of one, the sleeve is welded to both to aid in forming a connection therebetween. Racking resistance is provided by locating the sleeve and the bearing assemblies such that the steel covers of the bearing assemblies are held in engagement with the latch members and with opposite ends of the sleeve.Type: GrantFiled: November 13, 1995Date of Patent: February 17, 1998Assignee: The Eastern CompanyInventors: Lee S. Weinerman, James L. Hollingsworth, Fredrick L. Putzier, Scott A. Arthurs, Robert D. Dinallo
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Patent number: 5707718Abstract: A porous-plastic bearing comprises a porous-plastic sliding bearing member which is formed by gathering a cluster of plastic particles each having a volume in the range of from about 0.004 mm.sup.3 to about 4 mm.sup.3 and sintering the cluster of plastic particles while setting its porosity at a selected value in the range of from about 10% to about 30%. Furthermore, the sliding bearing member comprises a plurality of plastic particles in any longitudinal or cross section. Pores formed within the sliding bearing member are impregnated with or filled with a lubricating agent.Type: GrantFiled: February 8, 1996Date of Patent: January 13, 1998Assignees: Mitsubishi Electric Home Appliance Co., Ltd., Mitsubishi Denki Kabushiki KaishaInventors: Koei Matsukawa, Katsunori Sato, Toshihisa Imai
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Patent number: 5697709Abstract: A dynamic pressure type bearing comprises a sleeve rotatably holding a shaft driven by a motor composed of a rotor and a stator, one or both of the sleeve and the shaft being made of a resin material. The sleeve and/or shaft of a resin material may have a thin film of oil or grease formed on the surface thereof. Preferably, the resin material has load flexible temperture of 120.degree. C. or more, modules of elasticity or bending of 10 GPa or more, and coefficient of linear expansion of 3.times.10.sup.-5 /.degree.C. or less.Type: GrantFiled: July 18, 1996Date of Patent: December 16, 1997Assignee: NTN CorporationInventors: Natsuhiko Mori, Takashi Minami, Yasuhiro Yamamoto, Kiyotaka Kusunoki, Masakazu Hirata
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Patent number: 5676035Abstract: In a swashplate style pump a cam follower that interfaces the pump pistons and the swashplate cam is a ring of material. This ring of material will be provided with a bearing surface and a piston contacting surface having the piston contacting surface provided with piston receiving elements.Type: GrantFiled: March 5, 1996Date of Patent: October 14, 1997Assignee: FMC CorporationInventors: Brian Michael Chrestoff, Robert Henry Ash, Jr.
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Patent number: 5672013Abstract: A sliding bearing which shows good sliding properties when it is brought into sliding contact with a soft mating member at high temperatures. The sling member is formed from a wear-resistant and heat-resistant resin composition made up of 100 parts by weight of a polyimide resin, and 5-25 parts by weight of scaly graphite.Type: GrantFiled: September 25, 1996Date of Patent: September 30, 1997Assignee: NTN CorporationInventor: Koya Ohira
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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
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Patent number: 5660482Abstract: A sliding contact bearing, especially an aircraft landing gear trunnion beating, comprises two bearing members (1, 3) composed of titanium or titanium alloy with cooperating sliding surfaces (2, 4), a first one of which is chromium plated and the second one of which is coated with nickel and fluorocarbon polymer. Preferably, the nickel coating is applied by an electroless plating process, and the fluorocarbon is infused into pores in the nickel plating. Preferably, the nickel and fluorocarbon coating is 0.025 to 0.041 mm thick, and has a hardness in the range 750-1000 VPN.Type: GrantFiled: December 20, 1995Date of Patent: August 26, 1997Assignee: Dowty Aerospace Gloucester LimitedInventors: Richard Andrew Newley, Paul Raymond Smith, Alun Davies-Jones
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Patent number: 5609422Abstract: A crankshaft bearing for internal-combustion engines is provided in an internal-combustion engine housing made of a light metal alloy and comprises a bearing bore for a crankshaft journal of a crankshaft. The crankshaft bearing is provided with a device that reduces the increase in bearing play that occurs during the operation of the internal-combustion engine. This device includes a compensating element which is provided between the bearing bore and the crankshaft journal and has a relatively high coefficient of expansion.Type: GrantFiled: August 26, 1994Date of Patent: March 11, 1997Assignee: Dr. Ing.h.c.F Porsche AGInventors: Robert Mueller, Johannes Wuest
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Patent number: 5605401Abstract: The outer ring 3 is formed of COPNA resin. The inner ring 1 and balls 4 are formed of martensitic stainless steel SUS440C or the like, and the retainer 5 is formed of SUS304 or the like.Type: GrantFiled: October 31, 1995Date of Patent: February 25, 1997Assignee: NTN CorporationInventors: Hiromitsu Kondo, Michiyoshi Ishimaru