Polytetrafluorethylene Patents (Class 384/300)
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Patent number: 11338737Abstract: A movable link arrangement for an active exterior component on a vehicle. The movable link arrangement has several links that are connected together and rotate about a composite bushing. The composite bushing has a body with an aperture formed there through. The body is formed of a continuous fiber and resin material that circumscribes an inner layer of friction reducing material that forms a bore through the body of the composite bushing. A rotatable pin is positioned through that aperture of the body and extends through the bore so that the rotatable pin is in contact with the inner layer. The composite bushing with the friction reducing material provides reduced noise and eliminates unwanted corrosion that occurs when other bushing materials are used.Type: GrantFiled: December 9, 2019Date of Patent: May 24, 2022Assignee: MAGNA EXTERIORS, INC.Inventor: Jerry Godfrey
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Patent number: 10307991Abstract: A laminate includes a metal substrate and a sliding layer overlying the metal substrate. The sliding layer can include a polymer fabric. The polymer fabric can include first polymer P1. The sliding layer can further included a melt-processable matrix polymer. The melt-processable matrix polymer can include a second polymer P2. In embodiments, either P1 or P2 is a fluoropolymer. The sliding layer can further include a filler. In embodiments, the total amount of fluoropolymer and filler in the sliding layer is at least 30 vol %.Type: GrantFiled: September 30, 2014Date of Patent: June 4, 2019Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS PAMPUS GMBHInventors: Jens Speicher, Andreas Waldöfner, Alexander Oehrlein, Julia Ziegler
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Patent number: 10082176Abstract: A structural element has at least one slide layer and is formed to slide via the at least one slide layer along at least one line of motion. The slide layer includes a fiber-reinforced material containing at least one multi-component fiber that includes at least one first component, which is disposed in or on at least one first structure, and at least one second component, which is disposed in or on at least one second structure. The first and second structures are materially-bonded together and are disposed parallel to each other in a main extension direction of the at least one multi-component fiber. Either the first component or the second component is polytetrafluoroethylene. The structural element may be formed, e.g., as a bearing ring, a slide bearing bushing, a linear guide or a spherical bearing ring.Type: GrantFiled: November 24, 2015Date of Patent: September 25, 2018Assignee: AKTIEBOLAGET SKFInventors: Frank Henninger, Andreas Vierling
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Patent number: 10041537Abstract: According to the present invention, there is provided a slide member for a shock absorber of a vehicle including a back metal, a porous sintered metal layer containing a porous sintered metal formed on the back metal and a resin with which the porous sintered metal is impregnated and covered, and a resin slide layer formed on the porous sintered metal layer and having a smooth slide surface, and the slide member is formed in a cylindrical shape so that the resin slide layer is disposed on an inner peripheral side. The resin slide layer is composed of polytetrafluoroethylene and a plurality of granular elements dispersed in the polytetrafluoroethylene, and the granular element is composed of molybdenum disulfide and molybdenum trioxide, and/or tungsten disulfide and tungsten trioxide.Type: GrantFiled: March 15, 2016Date of Patent: August 7, 2018Assignee: Daido Metal Company Ltd.Inventors: Hideki Iwata, Yoshifumi Ito
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Patent number: 9502004Abstract: A support assembly including a support rotatably disposed with respect to a frame, a repetition lever hinge mounted to the support, and a repetition lever supported by the repetition lever hinge and rotatably disposed with respect to the support, wherein the repetition lever has a contact surface and the contact surface contacts a hammer shank roller provided to a hammer shank for rotating a hammer, and the repetition lever hinge is mounted to the support in a mounting direction that crosses with a tangent-line direction of a line tangent to the hammer shank roller at the contact between the hammer shank roller and the contact surface.Type: GrantFiled: March 24, 2016Date of Patent: November 22, 2016Assignee: Yamaha CorporationInventor: Akito Ohba
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Patent number: 9404204Abstract: A textile sleeve for routing and protecting elongate members and method of construction thereof is provided. The sleeve has a flexible, abrasion resistant, self-curling elongate wall constructed from woven monofilament and multifilament yarns. The wall has opposite edges extending parallel to a central axis of the sleeve. The wall is woven with warp yarns extending parallel to the central axis and fill yarns extending transverse to the warp yarns. The warp yarns are provided at least in part as first monofilament yarns and the fill yarns are provided as second monofilament yarns and second multifilament yarns. The second monofilament yarns have a larger diameter than the first monofilament yarns.Type: GrantFiled: December 3, 2014Date of Patent: August 2, 2016Inventor: Emi Itoh
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Patent number: 9291164Abstract: A scroll compressor is provided in which a boss of an orbiting scroll is inserted into and coupled to a boss coupling recess of a crank shaft, so that friction loss of a bearing portion of the crank shaft may be reduced, compression efficiency and reliability of the compressor may be enhanced, and noise and material costs may be reduced. A bush bearing may be formed as a coating on the boss of the orbiting scroll, so that a thickness of the bearing portion of the crank shaft may be reduced. Since an outer circumferential surface of the bearing portion is in contact with an inner circumferential surface of the boss coupling recess, damage to the bearing portion may be prevented.Type: GrantFiled: June 2, 2014Date of Patent: March 22, 2016Assignee: LG ELECTRONICS INC.Inventors: Sungyong Ahn, Seheon Choi, Byeongchul Lee, Byoungchan Kim, Junghoon Park
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Patent number: 9261140Abstract: A method involves the coating of a metallic substrate with a blasting medium through sandblasting or equivalent techniques. The blasting medium is preferably a powder made of silicon nitride (or other ceramic or engineering materials). The sandblasting process allows the silicon nitride powder to form a loosely packed layer on the substrate. With additional treatment via rolling and/or sliding action against a secondary body in the presence of a liquid lubricant, the loosely packed particle layer turns into a flattened surface matrix consisting of particle clusters and irregular cavities. The silicon nitride particles are spontaneously attached to the substrate surface without the use of an adhesive agent which subsequently leads to the formation of a surface matrix exhibiting a chaotic hybrid topography with zero tensile stress when subjected to rolling/sliding contact pressure. This cluster-cavity matrix can evolve continuously (thus dynamic) and is immune to debris indentation from dirty lubricants.Type: GrantFiled: December 30, 2009Date of Patent: February 16, 2016Inventor: Kenneth K. Chao
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Publication number: 20150139579Abstract: A bearing for an internal combustion engine may include a ferrous base material onto which a primary layer of a bronze alloy is disposed and a deposited layer applied over the primary layer. A bonding layer may be applied onto the primary layer between the primary layer and the deposited layer. The bonding layer may include nickel and chrome, and the deposited layer may include a metal alloy composed of aluminum and tin. A sliding layer may be disposed on the deposited layer and include a polymeric polyamide-imide matrix provided with a soft metal and at least one of a fluoropolymer and a silane-based material. The ferrous base material, the primary layer, the bonding layer, the deposited layer and the sliding layer in combination may be capable of standing a gripping load higher than 85 MPa.Type: ApplicationFiled: June 13, 2013Publication date: May 21, 2015Inventors: Valentim Jose Lima Sarabanda, Mario Sergio Da Silva Praca, Matheus Dos Santos Ferreira
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Publication number: 20150060597Abstract: According to one embodiment, a bearing is situated between a pitch link and a swashplate or a hub. The bearing comprises an outer housing having a first opening therethrough, an intermediate housing adjacent the housing inside the first opening and having a second opening therethrough, and an inner housing adjacent the intermediate housing inside the second opening and having a third opening therethrough. The inner housing comprising a first inner surface and a second inner surface defining the third opening. A first member is adjacent the first inner surface inside the third opening having a fourth opening therethrough. A second member is adjacent the second inner surface inside the third opening having a fifth opening therethrough coaxial with the fourth opening.Type: ApplicationFiled: November 5, 2014Publication date: March 5, 2015Applicant: Bell Helicopter Textron Inc.Inventors: Drew Sutton, Frank B. Stamps
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Patent number: 8962143Abstract: A PTFE-based sliding material, wherein the porous sintered layer on the surface of backing metal is impregnated with baked PTFE, with one or both of the solid lubricant and wear-resistant additive together with fibrous PTFE forming an entangled fibrous PTFE structure, is used for a bearing of air-conditioner. Resistance of the bearing for local wear is required. Such wear resistance is to be enhanced. Carbides of an oligomer or polymer containing a hydrophilic group formed during baking are incorporated in the entangled structure of fibrous PTFE.Type: GrantFiled: October 26, 2009Date of Patent: February 24, 2015Assignee: Taiho Kogyo Co., Ltd.Inventors: Masaru Yoshikawa, Akira Sawamoto, Hiroshi Ueda
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Publication number: 20150051123Abstract: There is provided a resin composition for a machinable liner of a sliding member. An ultraviolet curable resin composition for a self-lubricating liner contains a (meth)acrylate compound having an isocyanuric acid ring represented by the following formula and PTFE as a solid lubricant. In the formula (1), X is a group which contains an acryloyl group and is composed only of C, H, and O. Y and Z are groups each composed only of C, H, and O. PTFE is contained in an amount of 10 to 50% by weight with respect to a total amount of the ultraviolet curable resin composition. The ultraviolet curable resin composition is suitable for a self-lubricating liner 24 of a spherical bearing 20 having an outer race 22 and an inner race 26.Type: ApplicationFiled: October 24, 2014Publication date: February 19, 2015Inventors: Tadahiko KARAKI, Kunihiro MATSUMOTO, Koichiro SAGIYAMA
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Patent number: 8931957Abstract: A bearing comprises a resin matrix filled with fluoropolymer, graphite, and other discrete particles of an additive material that is attached to a backing material. The specific selection and mix of fillers with the resin matrix provides the desired blend of bearing properties such as wear resistance, fatigue and erosion resistance and low friction whilst maintaining sufficient flexibility for being formed into flanged cylindrical geometries without detriment to the adherence of the lining to the backing. A method for manufacturing a bearing comprises depositing to a backing material a fluid polymer bearing material comprised of a resin matrix filled with fluoropolymer, various fillers, and discrete particles of an additive to form a continuous consolidated bearing material, and curing the lining material to bond the lining material onto the backing material.Type: GrantFiled: August 25, 2008Date of Patent: January 13, 2015Assignee: GGB, Inc.Inventors: Adrian Hardgrave, Raphael Chantossel
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Patent number: 8882355Abstract: A bearing assembly and wind generator. The bearing assembly includes a plurality of bearing segments defining a sliding member and a bearing body, with the sliding member and bearing body being joined together, and the plurality of bearing segments being coupled together to define an annular bearing structure. Also, a wind generator includes a wind rotor supported upon a tower, a hydraulic pump coupled to the wind rotor, and with rotation of the hydraulic pump pressurizing a hydraulic fluid, and a hydraulic motor in fluid communication with the hydraulic pump, and an electrical generator driven by the hydraulic motor to produce electrical energy.Type: GrantFiled: December 14, 2009Date of Patent: November 11, 2014Inventor: Jochen Corts
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Publication number: 20140251257Abstract: A bearing arrangement for a camshaft may include a bearing ring arranged between two functional elements. The bearing ring may be supported with respect to the functional elements via axial front sides. At least one of the axial front sides of the bearing ring and a side of the respective functional elements in sliding contact with the axial front side may have a polymer coating.Type: ApplicationFiled: March 5, 2014Publication date: September 11, 2014Applicant: Mahle International GmbHInventors: Michael Kreisig, Falk Schneider
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Publication number: 20140226927Abstract: Provided is a sliding bearing that has a simple, easy-to-manufacture structure, does not require an insulating sleeve or the like, is not affected by the material or surface roughness of a roller against which the bearing slides, exhibits low friction torque and low wear, tolerates moment loads, and is easy to replace; as well as an image forming apparatus using the bearing.Type: ApplicationFiled: September 20, 2012Publication date: August 14, 2014Inventors: Takuya Ishii, Ikuma Fujitsuka, Kei Hattori, Kazuo Hirose, Satoru Fukuzawa
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Patent number: 8714826Abstract: A bearing assembly and wind generator. The bearing assembly includes a plurality of bearing segments defining a sliding member and a bearing body, with the sliding member and bearing body being joined together, and the plurality of bearing segments being coupled together to define an annular bearing structure. Also, a wind generator includes a wind rotor supported upon a tower, a hydraulic pump coupled to the wind rotor, and with rotation of the hydraulic pump pressurizing a hydraulic fluid, and a hydraulic motor in fluid communication with the hydraulic pump, and an electrical generator driven by the hydraulic motor to produce electrical energy.Type: GrantFiled: December 14, 2009Date of Patent: May 6, 2014Inventor: Jochen Corts
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Patent number: 8690438Abstract: The sliding bearing has a metallic outer ring and a self-lubricating liner formed on the inner circumferential surface of the outer ring. The self-lubricating liner has a self-lubricating resin composition consisting of a mixture of 60 to 80% by weight of polyetherketone-based resin, 10 to 30% by weight of polytetrafluoroethylene, 5 to 15% by weight of carbon fiber and not more than 15% by weight of aramid fiber, total amount of the carbon fiber and the aramid fiber being 10 to 25% by weight. The inner circumferential surface of the outer ring has a surface roughness in terms of center line average roughness not less than Ra 4.0 ?m and a surface roughness in terms of maximum height not less than Rmax 30.0 ?m; and the outer ring and the self-lubricating liner are unified. A method of producing the bearing is also provided.Type: GrantFiled: April 19, 2011Date of Patent: April 8, 2014Assignee: Minebea Co., Ltd.Inventors: Tadahiko Karaki, Kentaro Ishikawa, Motoharu Akiyama, Kunihiro Matsumoto
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Publication number: 20130341458Abstract: According to one embodiment, a bearing is situated between a pitch link and a swashplate or a hub. The bearing comprises an outer housing having a first opening therethrough, an elastomeric bearing adjacent the housing inside the first opening and having a second opening therethrough, and an inner housing adjacent the elastomeric bearing inside the second opening and having a third opening therethrough. The inner housing comprising a first inner surface and a second inner surface defining the third opening. A first member is adjacent the first inner surface inside the third opening having a fourth opening therethrough. A second member is adjacent the second inner surface inside the third opening having a fifth opening therethrough coaxial with the fourth opening.Type: ApplicationFiled: June 26, 2012Publication date: December 26, 2013Applicant: BELL HELICOPTER TEXTRON INC.Inventors: Drew Sutton, Frank B. Stamps
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Patent number: 8613555Abstract: An assembly includes a composite metal-polymer bushing having an outer metal layer with an inner surface, metal particles sintered to the inner surface, a polymer material between the metal particles, a finished interior surface collectively defined by the polymer material and exposed portions of the metal particles, a plurality of interstices formed between the metal particles and the polymer material, and a plurality of ridges defined by the polymer material that protrude above the metal particles. The ridges occupy at least about 8% of the area of a cylindrical reference surface nominally coinciding with the finished interior surface. The assembly also includes a crankshaft having a journal at least partially received within the bushing and supported by the finished interior surface. The journal is polished to a surface finish of about 0.1 microns or less to reduce a wear rate of the bushing.Type: GrantFiled: May 9, 2011Date of Patent: December 24, 2013Assignee: Trane International Inc.Inventors: Michael G. Benco, William E. Lapp, Derrick J. Lepak, Arther L. Butterworth, David Janda, Dennis R. Dorman
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Patent number: 8496381Abstract: A bearing includes a first member having a passageway configured to engage a shaft, the first member having a metallic material; and a second member disposed around at least a portion of the first member, the second member having a metallic material and at least one radially and inwardly bent portion capable of restricting axial movement of the first member. The first and second members are movable relative to each other.Type: GrantFiled: April 9, 2009Date of Patent: July 30, 2013Assignee: Saint-Gobain Performance Plastics CorporationInventors: Alan Hunter, Timothy J. Hagan, Vincent DiMartino, Boris L. Kuentzler
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Patent number: 8277369Abstract: A one-piece bearing is provided for use with a fluid processing assembly of the type having an umbilicus, a bearing support, a gimbal received within the bearing support, and a liner at least partially received within the gimbal. The bearing is secured to a midsection of the umbilicus and adapted to be at least partially received within the liner. An inner surface of the bearing engages the umbilicus while an outer surface of the bearing engages at least a portion of the liner for rotation relative to the liner.Type: GrantFiled: June 15, 2010Date of Patent: October 2, 2012Assignee: Fenwal, Inc.Inventors: Richard L. West, Mark B. Jones, Salvatore Manzella, Jr.
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Patent number: 8231276Abstract: A sliding material sliding material includes: a sliding plane member; a base member made of a material different from that of the sliding plane member; an intermediate member provided between the sliding plane member and the base member and formed with a plurality of spaces; and a joining member for bonding the intermediate member to the base member, in which a portion of the space formed to the intermediate member is impregnated with a portion of the sliding plane member so that the sliding plane member is bonded to the intermediate member, and a residual portion of the space of the intermediate member is impregnated with a portion of the joining member so that the base member is bonded to the intermediate member with the joining member therebetween.Type: GrantFiled: May 23, 2008Date of Patent: July 31, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Long Than Trong, Satoshi Namba, Nobuyuki Yasu, Kazuma Mukai
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Patent number: 8226297Abstract: An outer race for a rocker bearing includes an internal sliding layer and an external support layer, wherein the sliding layer and the bearing layer are formed from a wound composite fiber material. The outer race is identified by exactly one parting line. A rocker bearing with such an outer race and a method for its production is also provided, in which a sliding layer and a support layer of synthetic resin impregnated fibers are wound in succession onto a winding mandrel, and outer races are formed after setting on the winding body thus produced. The sliding layer and the support layer are wound onto a cylindrical winding mandrel, and the outer race is provided with exactly one parting line opening it, and sliding layer material on its inside is removed to such an extent that a partially spherical contour is obtained for receiving a complementary inner race.Type: GrantFiled: September 14, 2007Date of Patent: July 24, 2012Assignee: Federal-Mogul Deva GmbHInventors: Kamran Laal Riahi, August Stadlmayr
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Patent number: 8038351Abstract: A self-lubricating bearing assembly for a hinge of a turbine engine nozzle is described. The hinge includes a bolt and a bell crank housing. The bearing assembly includes a sleeve, a pair of bushings, liners, a thrust washer and a nut. The sleeve includes a tubular and a shoulder portion. Each bushing has an inner and an outer diameter. The liners include first liners, each bonded to the inner diameter of a respective one of the bushings, a second liner disposed between the shoulder portion and a bushing, and a third liner disposed between the thrust washer and a bushing. When assembled, the tubular portion is disposed over an outer diameter of the bolt, the outer diameters of the bushings are disposed within an inner diameter of the bell crank housing, and the nut is affixed between the thrust washer and the bolt to secure the hinge assembly.Type: GrantFiled: March 27, 2008Date of Patent: October 18, 2011Assignee: Roller Bearing Company of America, Inc.Inventors: Robert Arnold, Phillip Beausoleil
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Publication number: 20100239447Abstract: A bearing material composition that lines a support includes a combination of a thermoplastic conforming material and abrasive particles which provide a combined effect for remedying the effects due to edge loading that may be caused by misalignment between the bearing and a shaft to which a portion is rotatably mounted. The conforming material may be PTFE such that it does not have a memory and is subject to cold flow and creep. As a result, misalignment problems and edge loading are remedied by the combination of abrasive removal of metal material from the drive shaft at the location of edge loading and creep of the conforming material at the location of edge loading which may provide an overall greater bearing interface surface.Type: ApplicationFiled: March 23, 2009Publication date: September 23, 2010Applicant: Bitzer Scroll Inc.Inventor: James W. Bush
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Patent number: 7541086Abstract: The invention describes a bearing element (1), comprising a protective layer (2), a bearing metal layer (3) applied over the protective layer (2) and a sliding layer (4) applied by sputtering over the bearing metal layer (3). A sliding paint layer (5) is applied onto the sliding layer (4).Type: GrantFiled: September 15, 2006Date of Patent: June 2, 2009Assignee: Miba Gleitlager GmbHInventors: Walter Gärtner, Manfred Kienberger, Hubert Lang
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Publication number: 20090052822Abstract: A bearing comprises a resin matrix filled with fluoropolymer, graphite, and other discrete particles of an additive material that is attached to a backing material. The specific selection and mix of fillers with the resin matrix provides the desired blend of bearing properties such as wear resistance, fatigue and erosion resistance and low friction whilst maintaining sufficient flexibility for being formed into flanged cylindrical geometries without detriment to the adherence of the lining to the backing. A method for manufacturing a bearing comprises depositing to a backing material a fluid polymer bearing material comprised of a resin matrix filled with fluoropolymer, various fillers, and discrete particles of an additive to form a continuous consolidated bearing material, and curing the lining material to bond the lining material onto the backing material.Type: ApplicationFiled: August 25, 2008Publication date: February 26, 2009Applicant: GGB, INC.Inventors: Adrian Hardgrave, Raphael Chantossel
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Patent number: 7491446Abstract: The present invention relates to an annular sliding fluoroplastics member which is requested to have good mechanical properties, resistance to abrasion and wear, thermal conductivity, heat resistance, and the like, and also to a method of producing such an annular sliding fluoroplastics member. The annular sliding fluoroplastics member of the invention has a composite structure which mainly consists of fluorine plastics and short fibers, and 20 or more wt. % of short fibers by weight of a total amount of the short fibers are oriented in a direction along which a burden of a load is large. According to this configuration, the buckling resistance and the pressure resistance are enhanced. A member having a high buckling resistance can be used in a thrust slide bearing or a thrust washer in which a large press load is applied in the axial direction, and a member having a high pressure resistance can be used in a radial slide bearing in which a large press load is applied in a radial direction.Type: GrantFiled: March 16, 1999Date of Patent: February 17, 2009Assignee: Nippon Pillar Packing Co., Ltd.Inventors: Takahisa Ueda, Terumasa Yamamoto
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Patent number: 7480996Abstract: A bearing assembly is disclosed having a pair of bearing members movable relative to one another. A space is defined between the bearing members, and a relatively thin coating of a greaseless, self-lubricating material is applied to the surface of at least one of the bearing members. A grease lubricant is disposed in the space defined between the bearing members such that both the grease lubricant and the greaseless material act to substantially lower the friction-generated heat that is encountered during operation.Type: GrantFiled: July 31, 2007Date of Patent: January 27, 2009Assignee: The Boeing CompanyInventors: John W. Davies, Robert W. Knievel, Morri Montazeri
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Patent number: 7470065Abstract: A method for producing a wrapped bushing, includes cutting a metal blank to size: introducing holes into the blank, each hole being provided with at least one inwardly projecting protrusion: inserting plugs of plastics material exhibiting sliding characteristics into the holes; and shaping the blank to form the bushing. The resultant bushing has a substrate of at least one metal in which the holes are provided and filled with the plastics material. Each hole comprises at least one inwardly projecting protrusion.Type: GrantFiled: December 15, 2005Date of Patent: December 30, 2008Assignee: Federal-Mogul Deva GmbHInventors: August Stadlmayr, Achim Schmidt
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Publication number: 20080240634Abstract: A method and a device is provided for producing a flat or arc-shaped sliding element with a very large radius of curvature. The sliding element has a sliding layer based on a fiber reinforced plastic with a plastic matrix and a reinforcing element containing at least one thread. The reinforcing element is deposited on a polygonal winding core by means of a guide with the addition of a synthetic resin forming the plastic matrix. The flat or arc-shaped segments formed between the edges are separated from the tubular, polygonal winding body thus formed after it has set.Type: ApplicationFiled: September 14, 2007Publication date: October 2, 2008Inventors: Kamran Laal Riahi, Armin Linker, Udo Roos
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Patent number: 7226213Abstract: A multi-layer plane bearing has a bearing layer and a gliding layer connected to it. The gliding layer includes at least one thread layer treated with an epoxy resin. The thread layer is made up of a multitude of threads of at least one thread type arranged in a given pattern. Each thread includes at least one primary thread component made of spun PTFE/polyethersulfone mixed fiber yarn and at least one secondary component made of spun polyethersulfone fiber. There thread components are twisted in shaping the threads.Type: GrantFiled: December 3, 2002Date of Patent: June 5, 2007Assignee: Federal-Mogul Deva GmbHInventors: Udo Roos, Erik Kraft
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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: 6915574Abstract: 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: March 29, 2001Date of Patent: July 12, 2005Assignee: General Electric CompanyInventors: Thomas C. Mesing, Wayne R. Bowen, David B. Hester
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Patent number: 6893159Abstract: A tenter clip has a jaw pivot shaft having a pair of molded bearing surfaces of superior strength, wear resistance and stability under high temperature operating conditions. The method for manufacture of the jaw pivot shaft includes knurling recesses formed in the shaft prior to applying plastic bearing material to the recesses by injection molding and finishing machining the pin by centerless grinding.Type: GrantFiled: January 27, 2003Date of Patent: May 17, 2005Inventors: Christopher Eugene Hosmer, Anthony C. Medeiros, Edward J. Mack, II
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Patent number: 6877476Abstract: An apparatus that can be utilized as an internal combustion engine, a compressor, a pump or the like has an indexer which defines a plurality of slots. A pinwheel has a plurality of pins which, when the pinwheel and the indexer are rotated, engaged a respective slot to form a compression chamber. As rotation of these two components continues, each pin sequentially engages a slot to continuously form compression chambers.Type: GrantFiled: October 9, 2003Date of Patent: April 12, 2005Assignee: Indexica, Ltd.Inventor: Ross Bradsen
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Patent number: 6866421Abstract: A plain bearing comprising a backing alloy made of copper alloy or aluminum alloy, a coat layer of synthetic resin formed on the surface of a backing alloy, and a thin film of polytetrafluoroethylene formed on the surface of the coat layer has a lower coefficient friction, improved conformability and distinguished sliding characteristics.Type: GrantFiled: January 27, 2003Date of Patent: March 15, 2005Assignee: Daido Metal Company Ltd.Inventors: Takuya Tanaka, Hideyuki Nakajima, Nobutaka Hiramatsu, Masahito Fujita, Takayuki Shibayama
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Patent number: 6860638Abstract: A spherical bearing including a generally annular first portion having at least a partial substantially spherical outer surface and a generally annular second portion having at least a partial substantially concave surface, the outer surface at least partially engaging the concave surface, at least one of the outer surface and the concave surface having a plurality of frayed polytetraflouroethylene fibers exposed therefrom.Type: GrantFiled: February 28, 2003Date of Patent: March 1, 2005Assignee: Polygon Company, Inc.Inventor: Elson B. Fish
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Publication number: 20040228555Abstract: A bearing, plastic bearing material, and a method for the production thereof are described. The bearing comprises a continuous consolidated bearing material layer impregnated into a porous layer, which is in turn mounted on a backing material.Type: ApplicationFiled: March 3, 2004Publication date: November 18, 2004Inventors: Michael Kim, Derek Semple Marsella, Janette Johnston
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Publication number: 20040213492Abstract: Composite bearings and methods for manufacturing these bearings are provided in which a lining comprising polytetrafluoroethylene fiber and a second fiberous material are disposed within a polymeric matrix comprising polytetrafluoroethylene particles and a wetting agent. The composite bearings may be useful in hydropower applications where self-lubricating bearings containing graphite are undesirable because graphite can be corrosive to carbon steel.Type: ApplicationFiled: April 22, 2004Publication date: October 28, 2004Inventors: Michael Kim, Yuan Peng, Michael Horchuck
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Patent number: 6729763Abstract: A hybrid bearing system that has a self-lubricating portion and a grease lubricated portion each being disposed on the same surface, the system is adapted to accommodate at least two distinct wearing forces generated by different types of motions. The bearing system includes: a first member; a second member, the second member being configured to be rotatably received within the first member; a self lubricating machineable liner system disposed between the first member and the second member; a receiving area disposed on the self lubricating liner system and a portion of either the first or the second member; and a lubrication opening in fluid communication with the receiving area, the lubrication opening providing structure for disbursing a lubrication grease within the receiving area.Type: GrantFiled: July 31, 2002Date of Patent: May 4, 2004Assignee: Kamatics CorporationInventors: Jeffrey M. Post, Jan Krakowski, Mathew Mormino, Jr., Bruce B. Yurczak
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Patent number: 6663289Abstract: A bearing with one or more layers of lubricated spacers for dynamically brace-supporting first and second slide surfaces independently movable relative to each other. The spacers are positioned between the first and second slide surfaces, and each spacer has a pair of opposing spacer slide surfaces which are adapted to slide in surface-to-surface contact relative to an adjacent slide surface. Lubricants are used to facilitate low friction relative sliding motion between the slide surfaces, which can be either bonded to the spacers, or separately deposited between the slide surfaces.Type: GrantFiled: August 13, 2002Date of Patent: December 16, 2003Inventor: Pablo Javier Iljin
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Publication number: 20030185474Abstract: A plain bearing comprising a backing alloy made of copper alloy or aluminum alloy, a coat layer of synthetic resin formed on the surface of a backing alloy, and a thin film of polytetrafluoroethylene formed on the surface of the coat layer has a lower coefficient friction, improved conformability and distinguished sliding characteristics.Type: ApplicationFiled: January 27, 2003Publication date: October 2, 2003Applicant: DAIDO METAL COMPANY LTDInventors: Takuya Tanaka, Hideyuki Nakajima, Nobutaka Hiramatsu, Masahito Fujita, Takayuki Shibayama
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Patent number: 6616336Abstract: A lubrication system for mutually displaceable bodies of a mechanical device, comprises a porous element and a lubricating liquid (11) comprising dispersed particles (12), the size of the pores (10) of the porous element, and the size of the particles (12) being selected such that the pores (10) of the porous element become blocked by the particles contained in the lubricant liquid film (11) in the area of contact of said porous element with one of the bodies.Type: GrantFiled: January 22, 2001Date of Patent: September 9, 2003Inventors: Richard Stanley Sayles, Eustathios Ionnides
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Patent number: 6548188Abstract: A resin composition for a sliding member of the present invention comprises 5 to 40% by weight of barium sulfate; 1 to 30% by weight of a phosphate; 1 to 10% by weight of at least one selected from the group consisting of a polyimide resin, a phenol resin-calcined product and a polyphenylene sulfone resin; and the balance of a polytetrafluoroethylene resin, and a sliding member produced from the resin composition. Such a resin composition suitable for producing a sliding member capable of exhibiting a stable low friction coefficient and an extremely low wear amount under dry frictional condition, or under oil-immersed or oil-lubricated condition.Type: GrantFiled: June 19, 2000Date of Patent: April 15, 2003Assignee: Oiles CorporationInventors: Sumihide Yanase, Takashi Nakamaru
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Publication number: 20030039420Abstract: A bearing assembly is disclosed having a pair of bearing members movable relative to one another. A space is defined between the bearing members, and a relatively thin coating of a greaseless, self-lubricating material is applied to the surface of at least one of the bearing members. A grease lubricant is disposed in the space defined between the bearing members such that both the grease lubricant and the greaseless material act to substantially lower the friction-generated heat that is encountered during operation.Type: ApplicationFiled: August 24, 2001Publication date: February 27, 2003Applicant: The Boeing CompanyInventors: John W. Davies, Robert W. Knievel
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Patent number: 6478468Abstract: 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 fine abrasive and lubricant respectively. The carbon black content may be increased to about 10% to provide electrical conductivity.Type: GrantFiled: May 18, 2001Date of Patent: November 12, 2002Assignee: Glacier Garlock Bearings Inc.Inventors: Kenneth Macleod McMeekin, Janette Johnston
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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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Patent number: 6390682Abstract: A plain bearing comprises a metallic backing, a sintered porous metal layer bonded to the backing and a lining layer infiltrated into the pores of the porous metal layer and overlying the sintered metal layer, said lining layer comprising PTFE containing 10-30% by vol. of particulate wear-resistant filler, 2-10% by vol. fibrillated aramid fibers and 2-10% by vol. of a melt processable fluoropolymer. The melt processable fluoropolymer is a copolymer of the group tetrafluoroethylene-hexafluoropropylene, tetrafluoroethylene-perfluoroalkylvinylether and monofluoroalkoxy. Such a bearing exhibits superior cavitation erosion resistance and may, by increasing the temperature and/or duration of the sintering operation that is normally performed after the mixture of ingredients has been applied to a backing material, be made to exhibit significantly improved fatigue strength.Type: GrantFiled: August 21, 2000Date of Patent: May 21, 2002Assignee: Glacier Garlock Bearings, Inc.Inventors: Kenneth Macleod McMeekin, Janette Johnston