Polytetrafluorethylene Patents (Class 384/300)
  • Patent number: 10082176
    Abstract: 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: Grant
    Filed: November 24, 2015
    Date of Patent: September 25, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventors: Frank Henninger, Andreas Vierling
  • Patent number: 10041537
    Abstract: 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: Grant
    Filed: March 15, 2016
    Date of Patent: August 7, 2018
    Assignee: Daido Metal Company Ltd.
    Inventors: Hideki Iwata, Yoshifumi Ito
  • Patent number: 9502004
    Abstract: 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: Grant
    Filed: March 24, 2016
    Date of Patent: November 22, 2016
    Assignee: Yamaha Corporation
    Inventor: Akito Ohba
  • Patent number: 9404204
    Abstract: 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: Grant
    Filed: December 3, 2014
    Date of Patent: August 2, 2016
    Inventor: Emi Itoh
  • Patent number: 9291164
    Abstract: 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: Grant
    Filed: June 2, 2014
    Date of Patent: March 22, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Sungyong Ahn, Seheon Choi, Byeongchul Lee, Byoungchan Kim, Junghoon Park
  • Patent number: 9261140
    Abstract: 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: Grant
    Filed: December 30, 2009
    Date of Patent: February 16, 2016
    Inventor: Kenneth K. Chao
  • Publication number: 20150139579
    Abstract: 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: Application
    Filed: June 13, 2013
    Publication date: May 21, 2015
    Inventors: Valentim Jose Lima Sarabanda, Mario Sergio Da Silva Praca, Matheus Dos Santos Ferreira
  • Publication number: 20150060597
    Abstract: 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: Application
    Filed: November 5, 2014
    Publication date: March 5, 2015
    Applicant: Bell Helicopter Textron Inc.
    Inventors: Drew Sutton, Frank B. Stamps
  • Patent number: 8962143
    Abstract: 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: Grant
    Filed: October 26, 2009
    Date of Patent: February 24, 2015
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Masaru Yoshikawa, Akira Sawamoto, Hiroshi Ueda
  • Publication number: 20150051123
    Abstract: 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: Application
    Filed: October 24, 2014
    Publication date: February 19, 2015
    Inventors: Tadahiko KARAKI, Kunihiro MATSUMOTO, Koichiro SAGIYAMA
  • Patent number: 8931957
    Abstract: 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: Grant
    Filed: August 25, 2008
    Date of Patent: January 13, 2015
    Assignee: GGB, Inc.
    Inventors: Adrian Hardgrave, Raphael Chantossel
  • Patent number: 8882355
    Abstract: 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: Grant
    Filed: December 14, 2009
    Date of Patent: November 11, 2014
    Inventor: Jochen Corts
  • Publication number: 20140251257
    Abstract: 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: Application
    Filed: March 5, 2014
    Publication date: September 11, 2014
    Applicant: Mahle International GmbH
    Inventors: Michael Kreisig, Falk Schneider
  • Publication number: 20140226927
    Abstract: 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: Application
    Filed: September 20, 2012
    Publication date: August 14, 2014
    Inventors: Takuya Ishii, Ikuma Fujitsuka, Kei Hattori, Kazuo Hirose, Satoru Fukuzawa
  • Patent number: 8714826
    Abstract: 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: Grant
    Filed: December 14, 2009
    Date of Patent: May 6, 2014
    Inventor: Jochen Corts
  • Patent number: 8690438
    Abstract: 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: Grant
    Filed: April 19, 2011
    Date of Patent: April 8, 2014
    Assignee: Minebea Co., Ltd.
    Inventors: Tadahiko Karaki, Kentaro Ishikawa, Motoharu Akiyama, Kunihiro Matsumoto
  • Publication number: 20130341458
    Abstract: 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: Application
    Filed: June 26, 2012
    Publication date: December 26, 2013
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Drew Sutton, Frank B. Stamps
  • Patent number: 8613555
    Abstract: 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: Grant
    Filed: May 9, 2011
    Date of Patent: December 24, 2013
    Assignee: Trane International Inc.
    Inventors: Michael G. Benco, William E. Lapp, Derrick J. Lepak, Arther L. Butterworth, David Janda, Dennis R. Dorman
  • Patent number: 8496381
    Abstract: 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: Grant
    Filed: April 9, 2009
    Date of Patent: July 30, 2013
    Assignee: Saint-Gobain Performance Plastics Corporation
    Inventors: Alan Hunter, Timothy J. Hagan, Vincent DiMartino, Boris L. Kuentzler
  • Patent number: 8277369
    Abstract: 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: Grant
    Filed: June 15, 2010
    Date of Patent: October 2, 2012
    Assignee: Fenwal, Inc.
    Inventors: Richard L. West, Mark B. Jones, Salvatore Manzella, Jr.
  • Patent number: 8231276
    Abstract: 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: Grant
    Filed: May 23, 2008
    Date of Patent: July 31, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Long Than Trong, Satoshi Namba, Nobuyuki Yasu, Kazuma Mukai
  • Patent number: 8226297
    Abstract: 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: Grant
    Filed: September 14, 2007
    Date of Patent: July 24, 2012
    Assignee: Federal-Mogul Deva GmbH
    Inventors: Kamran Laal Riahi, August Stadlmayr
  • Patent number: 8038351
    Abstract: 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: Grant
    Filed: March 27, 2008
    Date of Patent: October 18, 2011
    Assignee: Roller Bearing Company of America, Inc.
    Inventors: Robert Arnold, Phillip Beausoleil
  • Publication number: 20100239447
    Abstract: 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: Application
    Filed: March 23, 2009
    Publication date: September 23, 2010
    Applicant: Bitzer Scroll Inc.
    Inventor: James W. Bush
  • Patent number: 7541086
    Abstract: 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: Grant
    Filed: September 15, 2006
    Date of Patent: June 2, 2009
    Assignee: Miba Gleitlager GmbH
    Inventors: Walter Gärtner, Manfred Kienberger, Hubert Lang
  • Publication number: 20090052822
    Abstract: 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: Application
    Filed: August 25, 2008
    Publication date: February 26, 2009
    Applicant: GGB, INC.
    Inventors: Adrian Hardgrave, Raphael Chantossel
  • Patent number: 7491446
    Abstract: 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: Grant
    Filed: March 16, 1999
    Date of Patent: February 17, 2009
    Assignee: Nippon Pillar Packing Co., Ltd.
    Inventors: Takahisa Ueda, Terumasa Yamamoto
  • Patent number: 7480996
    Abstract: 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: Grant
    Filed: July 31, 2007
    Date of Patent: January 27, 2009
    Assignee: The Boeing Company
    Inventors: John W. Davies, Robert W. Knievel, Morri Montazeri
  • Patent number: 7470065
    Abstract: 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: Grant
    Filed: December 15, 2005
    Date of Patent: December 30, 2008
    Assignee: Federal-Mogul Deva GmbH
    Inventors: August Stadlmayr, Achim Schmidt
  • Publication number: 20080240634
    Abstract: 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: Application
    Filed: September 14, 2007
    Publication date: October 2, 2008
    Inventors: Kamran Laal Riahi, Armin Linker, Udo Roos
  • Patent number: 7226213
    Abstract: 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: Grant
    Filed: December 3, 2002
    Date of Patent: June 5, 2007
    Assignee: Federal-Mogul Deva GmbH
    Inventors: Udo Roos, Erik Kraft
  • Patent number: 7147378
    Abstract: 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: Grant
    Filed: February 19, 2004
    Date of Patent: December 12, 2006
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Chaokang Chu, James R. Hanrahan
  • Patent number: 6915574
    Abstract: 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: Grant
    Filed: March 29, 2001
    Date of Patent: July 12, 2005
    Assignee: General Electric Company
    Inventors: Thomas C. Mesing, Wayne R. Bowen, David B. Hester
  • Patent number: 6893159
    Abstract: 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: Grant
    Filed: January 27, 2003
    Date of Patent: May 17, 2005
    Inventors: Christopher Eugene Hosmer, Anthony C. Medeiros, Edward J. Mack, II
  • Patent number: 6877476
    Abstract: 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: Grant
    Filed: October 9, 2003
    Date of Patent: April 12, 2005
    Assignee: Indexica, Ltd.
    Inventor: Ross Bradsen
  • Patent number: 6866421
    Abstract: 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: Grant
    Filed: January 27, 2003
    Date of Patent: March 15, 2005
    Assignee: Daido Metal Company Ltd.
    Inventors: Takuya Tanaka, Hideyuki Nakajima, Nobutaka Hiramatsu, Masahito Fujita, Takayuki Shibayama
  • Patent number: 6860638
    Abstract: 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: Grant
    Filed: February 28, 2003
    Date of Patent: March 1, 2005
    Assignee: Polygon Company, Inc.
    Inventor: Elson B. Fish
  • Publication number: 20040228555
    Abstract: 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: Application
    Filed: March 3, 2004
    Publication date: November 18, 2004
    Inventors: Michael Kim, Derek Semple Marsella, Janette Johnston
  • Publication number: 20040213492
    Abstract: 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: Application
    Filed: April 22, 2004
    Publication date: October 28, 2004
    Inventors: Michael Kim, Yuan Peng, Michael Horchuck
  • Patent number: 6729763
    Abstract: 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: Grant
    Filed: July 31, 2002
    Date of Patent: May 4, 2004
    Assignee: Kamatics Corporation
    Inventors: Jeffrey M. Post, Jan Krakowski, Mathew Mormino, Jr., Bruce B. Yurczak
  • Patent number: 6663289
    Abstract: 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: Grant
    Filed: August 13, 2002
    Date of Patent: December 16, 2003
    Inventor: Pablo Javier Iljin
  • Publication number: 20030185474
    Abstract: 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: Application
    Filed: January 27, 2003
    Publication date: October 2, 2003
    Applicant: DAIDO METAL COMPANY LTD
    Inventors: Takuya Tanaka, Hideyuki Nakajima, Nobutaka Hiramatsu, Masahito Fujita, Takayuki Shibayama
  • Patent number: 6616336
    Abstract: 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: Grant
    Filed: January 22, 2001
    Date of Patent: September 9, 2003
    Inventors: Richard Stanley Sayles, Eustathios Ionnides
  • Patent number: 6548188
    Abstract: 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: Grant
    Filed: June 19, 2000
    Date of Patent: April 15, 2003
    Assignee: Oiles Corporation
    Inventors: Sumihide Yanase, Takashi Nakamaru
  • Publication number: 20030039420
    Abstract: 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: Application
    Filed: August 24, 2001
    Publication date: February 27, 2003
    Applicant: The Boeing Company
    Inventors: John W. Davies, Robert W. Knievel
  • Patent number: 6478468
    Abstract: 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: Grant
    Filed: May 18, 2001
    Date of Patent: November 12, 2002
    Assignee: Glacier Garlock Bearings Inc.
    Inventors: Kenneth Macleod McMeekin, Janette Johnston
  • Patent number: 6474869
    Abstract: 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: Grant
    Filed: September 14, 2000
    Date of Patent: November 5, 2002
    Assignee: Sunrise Medical HHG Inc.
    Inventors: Dean R. Sommerfeld, Todd C. Kramer
  • Patent number: 6390682
    Abstract: 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: Grant
    Filed: August 21, 2000
    Date of Patent: May 21, 2002
    Assignee: Glacier Garlock Bearings, Inc.
    Inventors: Kenneth Macleod McMeekin, Janette Johnston
  • Patent number: 6365556
    Abstract: 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: Grant
    Filed: February 22, 2001
    Date of Patent: April 2, 2002
    Assignee: New Hampshire Ball Bearings, Inc.
    Inventor: Grant Drew
  • Publication number: 20020018605
    Abstract: 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: Application
    Filed: July 12, 2001
    Publication date: February 14, 2002
    Inventor: Julie Ann McDonald