Coating Or Casting Patents (Class 29/898.12)
  • Patent number: 9273724
    Abstract: A thrust bearing pad includes a relatively low wear and low friction contact layer disposed on a metallic substrate. The metallic substrate allows a manufacturer to couple the thrust bearing pad to a corresponding metallic thrust bearing in a relatively secure manner while the contact layer extends the operating life of the thrust bearing and minimizes maintenance.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: March 1, 2016
    Assignee: Bruce Diamond Corporation
    Inventors: C. Andrew Rosenholm, Scott O'Brien, Amitava Datta
  • Patent number: 9096035
    Abstract: The corrosion resistance of formed and shaped sheet magnesium alloy articles may be improved by applying to the article a substantially crack- and pore-free ductile metal layer on at least selected surfaces and cut or sheared edges. An exemplary ductile metal may be aluminum or its alloys. Two methods of applying such a ductile metal layer are described. One method is suitable for extended areas of the magnesium alloy surface, and is applied prior to stamping the article while a second method, suitable for cut or sheared edges, is intended for application after the article is fully formed. The incorporation of both embodiments into conventional sheet metal stamping processes to form the corrosion resistant formed magnesium article is described.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 4, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Anil K. Sachdev, Jon T. Carter, Blair E. Carlson, Guangling Song
  • Patent number: 8955225
    Abstract: In forming an actuator, a large end surface of a tapered roller of a tapered roller bearing is shot with minute particles of silicon carbide having a diameter of 0.5 to 100 ?m and having an angle formed by crushing, and such a surface is scraped concavely at a diameter within a range from 0.5 to 100 ?m to form a large number of concavities having a depth of equal to or greater than 1 ?m at a pitch of equal to or less than 200 ?m. The concavities are non-continuous and isolated from each other, and serve as a lubricant puddle. The concavities are formed by scraping and not by plastic deformation, and thus the surface is not hardened.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: February 17, 2015
    Assignee: NSK Ltd.
    Inventors: Masato Kobayashi, Tomoharu Saito, Shinji Fujita, Takanori Tanaka
  • Patent number: 8931175
    Abstract: It is an object of the present invention to provide a bearing member having a highly accurate dynamic pressure generating portion stably at low cost. Dynamic pressure grooves (8a1) and (8a2) are formed as the dynamic pressure generating portions on an inner circumferential surface of the electroforming portion (10) by an electroforming process, and injection molding is performed by using a resin while inserting the electroforming portion (10), thereby forming a bearing member (8). A shaft member (2) is inserted into an inner circumference of the bearing member.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: January 13, 2015
    Assignee: NTN Corporation
    Inventors: Natsuhiko Mori, Nobuyoshi Yamashita, Fuminori Satoji, Isao Komori, Toshiyuki Mizutani, Masafumi Okuma, Kenichi Mitani
  • Publication number: 20140376844
    Abstract: A wing foil bearing may include one or more wing or tab foil layers. A tab foil layer may comprise a thin material with a two-dimensional array of tab shapes. A tab shape may be defined by a boundary of material separated from the thin material and having an integral edge and a free edge. Tab shapes may include one or more free-state bends relative to the thin material, forming a two-dimensional array of cantilever wings or tabs. Tab arrays may be one or more of various types or two-dimensional arrays, and a tab foil layer may include additional tab arrays and tabs. One or more tab foil layers may be engaged with a mounting surface layer and a counter-surface layer to form a wing foil bearing. Tab foil layers may be stacked and or nested, including partial nesting and complete nesting.
    Type: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Inventors: Erik E. Swanson, Patrick Shawn O'Meara
  • Patent number: 8819940
    Abstract: A method for manufacturing a linear actuator includes inserting a portion of a thrust member of the actuator into a casting portion of a molding apparatus. The casting portion includes a model screw member having a threaded portion. A molding material can be added into the cast portion to overmold a nut to the thrust member. Thus, the nut will include a threaded portion on an internal circumference mateable with the threaded portion of the model screw member. The overmolded nut and thrust tube member may be coupled to a screw shaft of the actuator, such that the threaded portion of the nut mates with a threaded portion of the screw shaft.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: September 2, 2014
    Assignee: Tolomatic, Inc.
    Inventors: Gary W. Rosengren, Wyatt A. Grunerud, Jeff Karls
  • Patent number: 8739410
    Abstract: Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, heating the resin liner covering the ball portion through the ball portion of the inside member.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: June 3, 2014
    Assignee: THK Co., Ltd.
    Inventors: Hidekazu Michioka, Tomozumi Murata, Tetsuhiro Nishide
  • Patent number: 8499458
    Abstract: A method for producing a rolling bearing component with a carbon gradient, at least in the region of its outer layer, wherein molten metal is sprayed onto a carrier in a spraying process, the carbon content of the metal to be sprayed on being varied during the spraying operation.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: August 6, 2013
    Assignee: Schaeffler Technologies AG & Co., KG
    Inventors: Werner Trojahn, Silke Roesch
  • Patent number: 8464427
    Abstract: A sleeve bearing assembly and method of construction therefore has an inner portion constructed from a plurality of yarns to provide a journal bearing surface for receipt of a journal for relative movement therein and an elastic outer portion injection molded at least partially about the inner portion. The plurality of yarns are woven together with at least some of the yarns being woven in a warp direction corresponding to a length of the journal bearing surface and in a weft direction corresponding to a circumferential direction of the journal bearing surface to form a backing of the inner portion. At least one of the plurality of yarns is provided as a self-lubricating yarn woven with the backing in a weft direction to substantially form the bearing surface radially inwardly of the backing.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: June 18, 2013
    Assignee: Federal-Mogul World Wide, Inc.
    Inventor: Benjamin B. James
  • Patent number: 8418332
    Abstract: Surface texturing is employed to modify the topography of one or more surfaces (radial or cylindrical) of the bearing system for a roller cone rock bit. The surface texturing results in a dimpled surface which retains additional lubricant helpful in reducing friction in the boundary and mixed lubrication regimes. Shot peening is disclosed as one method for texturing the desired surface.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: April 16, 2013
    Assignee: Varel International Ind., L.P.
    Inventor: Xiaobin Lu
  • Patent number: 8356413
    Abstract: The present invention provides a method of making a foil component of a foil bearing, where the foil component has an inner surface, an inner portion, and an outer portion. In one embodiment, and by way of example only, the method includes thermally spraying a first material onto an outer surface of a sacrificial substrate to form the foil component inner portion, where the first material includes a solid film lubricant, and the outer surface has a shape that is complementary to the inner surface of the foil component. A second material is then thermally sprayed over the inner portion to form the outer portion, and the second material includes a metal. The sacrificial substrate is then removed to expose the foil component.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: January 22, 2013
    Assignee: Honeywell International Inc.
    Inventor: Christopher M. Weyant
  • Patent number: 8261425
    Abstract: A telescoping steering column assembly includes upper and lower jackets having inner and outer surfaces and telescoping ends, respectively, and two sleeves disposed therebetween and having an annular cavity defined within each of the sleeves to hold bearings therewithin. One bearing is connected to the outer jacket and the other bearing is connected to the inner jacket. A method of making the assembly includes the steps of disposing the inner jacket within the outer jacket followed by disposing the sleeves therebetween and injecting a plastic material therethrough to form bearings. The plastic material is extracted from one of the apertures in each of the jackets to provide a sliding engagement between one of the bearing and the inner jacket and another bearing and the outer jacket.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: September 11, 2012
    Assignee: Steering Solutions IP Holding Corporation
    Inventors: William D. Cymbal, Richard K. Riefe
  • Patent number: 8241761
    Abstract: A composite casting for a wear resistant surface, comprising a base composed of a ductile material; and a plurality of wear resistant inserts embedded in said base and composed of a carbide-containing wear resistant alloy which after casting is hot strained by forging or rolling, said inserts being arranged in said base rows so that said inserts of each subsequent one of said rows overlap gaps between said inserts of a preceding one of said rows and (or) said inserts should be positioned with their side bases at a degree (relative to the movement of the abrasive material) of no less than 20°, which would prevent the wear of the ductile base of the composite castings.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: August 14, 2012
    Inventors: Mikhail Garber, Leonid Garber
  • Patent number: 8234785
    Abstract: The invention relates to a method for producing a bearing component (1), in particular a connecting rod (1), from a molded part (2), wherein the bearing component (1) includes at least one divided bearing seat (5) formed by a bearing base (3) and a bearing cover (4), and a bearing seat surface (7) coated with a bearing layer (6) of a bearing layer material is formed in the bearing seat (5) for supporting a shaft. In the method of the present invention the bearing cover (4) is separated from the molded part (2) along a separating surface (8). In accordance with the invention, a masking agent (M) is disposed perpendicularly with respect to a separating line (10) on the bearing seat surface (7) during a coating process for applying the bearing layer (6) in order to form a coating-free region, such that a recess (9) at a predetermined width (B) is produced in the bearing layer (6). The masking agent (M) is formed as an element which is separate from the bearing component (1) and is not connected thereto.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: August 7, 2012
    Assignee: ThyssenKrupp Technologies AG
    Inventor: Stefano Sergio Guerreiro
  • Publication number: 20120131799
    Abstract: A method of re-manufacturing a shaft-hub assembly to be used in a transfer case, the method including the steps of : determining an initial diameter of a journal bearing of a main shaft that has been used in the transfer case; comparing the determined initial diameter to a predetermined minimum threshold, and discarding the main shaft if the determined initial diameter is below the predetermined minimum threshold; if the determined initial diameter is above the predetermined minimum threshold, preparing the bearing surface of the journal bearing for a thermal spray process; thermally spraying an aluminum bronze material onto the bearing surface; and machining the aluminum bronze material to achieve an outside diameter that provides a desired running clearance with a corresponding finished inside diameter of a central bore for a hub to which the main shaft will be assembled in the transfer case.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 31, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Martin S. Kramer, Roger L. Briggs, Steven J. Ross
  • Patent number: 8186061
    Abstract: A manufacturing method of a bearing according to the present invention includes a bearing forming member preparing step S10 for preparing a bearing forming member W made of AlSi alloy containing 5 weight % to 40 weight % of Si, a pressure sizing step S20 which decreases a maximum crest height Rp of a bearing surface 132 by performing pressure sizing of the bearing surface 132 of the bearing forming member W, and an aluminum oxide film forming step S30 for forming an aluminum oxide film 36 on the bearing surface 132 of the bearing forming member W by anodizing the bearing surface 132 of the bearing forming member W in this order. According to the manufacturing method of a bearing of the present invention, it is possible to manufacture a bearing which can maintain the bearing performance over a long period.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: May 29, 2012
    Assignee: Gast Japan Co., Ltd.
    Inventor: Yoshinari Yokoo
  • Publication number: 20120128280
    Abstract: 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: Application
    Filed: November 18, 2011
    Publication date: May 24, 2012
    Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: Paul W. Ortiz, Julia DiCorleto Gibson
  • Patent number: 8172463
    Abstract: A rolling bearing is provided that includes an inner ring, an outer ring, and a plurality of rolling elements provided between a raceway surface of the inner ring and that of the outer ring and has a ceramic film formed on at least one surface selected from among an inner peripheral surface of the inner ring and a peripheral surface of the outer ring. The ceramic film is formed by using an aerosol deposition method in which alumina fine particles or the like is used as a material of aerosol. The ceramic film is formed with an aerosol injection nozzle kept stationary and the inner ring or the outer ring being rotated by using a motor for rotating an object, the inner ring or the outer ring is moved axially by using a positioning XY table.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: May 8, 2012
    Assignee: NTN Corporation
    Inventors: Tatsuo Nakajima, Kouya Oohira
  • Patent number: 8127451
    Abstract: A bearing for use in a particulate-laden environment uses the particles as a lubricant between the opposed bearing surfaces, which are coated with a tungsten carbide coating that is harder than the particles.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: March 6, 2012
    Assignee: Republic Industries International
    Inventors: Robert Darst, Carl Coslow, Ray Gulley
  • Publication number: 20110221153
    Abstract: A linking rod for a vehicle comprising a basic body (2). The basic body (2) comprises a bearing housing (3) and a joint housing (4) which are spaced apart from one another by a coupling piece (9) of the basic body (2). The bearing housing (3), of the basic body (2). is formed from a first plastic material which is surrounded by an enclosure (7) which is made from a second plastic material that is softer than the first plastic material.
    Type: Application
    Filed: July 30, 2008
    Publication date: September 15, 2011
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Ulrich Bladt, Olaf Beutler, Günter Lohfink, Karl-Walter Palluck, Stefan Loheide, Dirk Lamla, Stefan Schönhoff, Christian Maassmann
  • Patent number: 7954241
    Abstract: The present invention discloses a self-lubricating bearing, which is a hollow cylindrical body with an axial hole in its center, exhibiting a structure formed by sintering a multiple of spherical alloys particles under microscopy. The self-lubricating bearing has a multiple of pores to receive lubricating oil. Further, the present invention provides a manufacturing process for making self-lubricating bearings.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: June 7, 2011
    Inventor: Yun-Ju Chen
  • Patent number: 7926182
    Abstract: A method for manufacturing a hydrodynamic bearing with hydrodynamic pressure generating grooves comprises steps of: step 201: providing a substrate with a first annular protrusion and a plurality of projections formed on a periphery thereof, the projections being in a side of the first annular protrusion; step 202: placing the substrate in a middle of a hollow mold, then injecting a feedstock of powder and molten binder under pressure into the mold to surround the substrate, thus forming a desired bearing preform; step 203: separating the substrate from the bearing preform by means of catalytic debinding; step 204: separating the molten binder from the bearing preform; step 205: sintering the bearing preform to thereby form the hydrodynamic bearing.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: April 19, 2011
    Assignee: Foxconn Technology Co., Ltd.
    Inventor: Chuen-Shu Hou
  • Patent number: 7882638
    Abstract: A process for manufacturing a bearing. The bearing may be used in a tool disposed within a bore hole. The process comprises providing a tubular sleeve and applying a hard facing material on the outer diameter of the tubular sleeve so that the hard facing material is fused onto the outer diameter, and thereafter applying a material layer on the outer diameter so that the material layer is fused onto the outer diameter. The method further includes machining the outer diameter so that a portion of the material layer is removed, and then machining the inner diameter so that only the hard facing material is left as an inner diameter. The method further includes machining the outer diameter and the inner diameter in order to form the bearing. In the most preferred embodiment, the method further includes placing the bearing into a housing, and inserting a mandrel into the bearing, and wherein a hard coating of the mandrel abuts the bearing. A mud motor for rotating a bit in a well bore is also disclosed.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: February 8, 2011
    Assignee: Ashmin LC
    Inventor: Gunther H H von Gynz-Rekowski
  • Patent number: 7874072
    Abstract: A method is provided for manufacturing a bearing support, particularly for a fan casing. The method includes the step of placing a bearing assembly in correspondence to a matrix die of an injection mold. The method further includes the step of abutting a punch of the injection mold on the bearing assembly to coaxially align and axially clamp the bearing assembly. The method further includes the step of injecting a plastic material into the mold to form an assembly sheath over-injected on outer surfaces of the bearing assembly.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: January 25, 2011
    Assignee: Electrolux Home Products Corporation N.V.
    Inventor: Roberto Mazzocco
  • Patent number: 7870674
    Abstract: An end surface 1a of sintered bearing 1 is abutted on a die 10 so that the sintered bearing 1 is mounted thereon, and a tool 40 is abutted on the other end surface 1b of the sintered bearing 1. While the sintered bearing 1 is pressed by the tool 40, high frequency vibration in an axial direction is supplied from a horn 30 to the tool 40 by operating a vibrator 20 so as to give repeated impacts to both end surfaces 1a and 1b of the sintered bearing 1, and pores of the end surfaces 1a and 1b are thereby sealed. The die 10 and the tool 40 have surfaces abutting the sintered bearing 1, and the surfaces have roughness of 0.4 s or less and hardness of HRA 60 or more, and the tool presses the sintered bearing at a pressure of 70 to 700 kPa. The high frequency vibration supplied to the tool 40 has a power of 50 to 3000 W/cm2, and it has a frequency of 10 to 50 kHz.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: January 18, 2011
    Assignee: Hitachi Powdered Metals Co., Ltd.
    Inventor: Makoto Kondo
  • Patent number: 7870673
    Abstract: Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, heating the resin liner covering the ball portion through the ball portion of the inside member.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: January 18, 2011
    Assignee: THK Co., Ltd.
    Inventors: Hidekazu Michioka, Tomozumi Murata, Tetsuhiro Nishide
  • Publication number: 20100027924
    Abstract: A method for producing bearings comprising (i) an outer bushing, (ii) a bearing element based on cellular polyisocyanate polyadducts and (iii) a hollow inner bushing, wherein the outer bushing is produced by casting or injecting a reactive polyurethane system and adhesively bonding it to the bearing element.
    Type: Application
    Filed: November 9, 2007
    Publication date: February 4, 2010
    Applicant: BASF SE
    Inventors: Andreas Wulf, Falk Soeren, Andreas Horstmann
  • Patent number: 7650697
    Abstract: In spindle motors journaled on fluid-dynamic-pressure bearings, especially in such spindle motors employed in recording-disk drives in implementations that subject the drives to vibration and shock, sealing performance of a capillary seal formed between motor rotor-side and stator-side bearing surfaces, cohesiveness of oil-repellant on rotor-side/stator-side dry-area surfaces adjoining the capillary seal section, and motor inter-component adhesive strength are improved. The capillary-seal-constituting rotor-side/stator-side surface(s) are exposed to a plasma or to ultraviolet rays under predetermined conditions to improve the wettability of the surface(s) for the bearing fluid. The dry-area surface(s) are similarly irradiated so as to improve their wettability for the oil-repellant. Adhesively bonded component surfaces are likewise irradiated so as to improve their wettability for the adhesive, enhancing adhesive strength.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: January 26, 2010
    Assignee: Nidec Corporation
    Inventors: Masato Gomyo, Takehito Tamaoka
  • Publication number: 20090269127
    Abstract: A lever mounting arrangement of a pivotable lever configured as a cast part and mounted through a hub for pivoting on a stationary axle. A sliding bearing, configured as a plastic bushing, is inserted into an annular gap defined in radial direction by a forming contour and a peripheral surface of the axle. The sliding bearing is made by injecting plastic material in an injection molding tool into the hub of the lever onto an unprocessed forming contour, the sliding bearing has friction-reducing and/or wear-reducing elements and a seal.
    Type: Application
    Filed: April 24, 2009
    Publication date: October 29, 2009
    Applicant: SCHAEFFLER KG
    Inventor: Bernd HARTMANN
  • Patent number: 7594310
    Abstract: A device and method for producing, by molding, a circular-shaped mechanical part made of a metal alloy. The device has a rotatable hollow mold for receiving a predetermined quantity of the metal alloy. The predetermined quantity of the metal alloy is defined by at least one segment of a metal alloy rod. An inductive heating device melts the metal alloy to a melting point. A blank of the mechanical part being formed by centrifuging the melted metal alloy. Cooling the blank in the hollow mold to a second temperature which corresponds to a desired malleability. Processing the blank with a shaping tool to obtain a desired internal profile. To harden and form the circular-shaped mechanical part, the blank is further cooled to a tempering temperature.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: September 29, 2009
    Inventor: Gianfranco Passoni
  • Publication number: 20090081471
    Abstract: The invention relates to a slide bearing composite material which comprises a support layer from a copper alloy and a bearing coating applied to said support layer. The copper alloy may comprise 0.5 to 5% by weight of nickel, 0.2 to 2.5% by weight of silicon, ?0.1% by weight of lead. The bearing coating can be a galvanic layer, a sputter layer or a plastic layer. The invention also relates to methods of producing such a composite material.
    Type: Application
    Filed: May 13, 2006
    Publication date: March 26, 2009
    Inventors: Maik Wilhelm, Uwe Lehmann, Gerd Andler, Philippe Damour, Neil Graham
  • Patent number: 7497014
    Abstract: A sliding bearing for axial and/or radial arrangement of a first bearing member in relation to a second bearing member, comprises a second bearing member, which has a bearing recess provided with a second slide face; a first bearing member, which is lodged in the bearing recess and which is mounted axially and/or radially, the first bearing member having a first slide face, which is opposite the second slide face and spaced therefrom by a clearance; at least one sliding/guiding element, which is disposed between the first and the second bearing members and fixed in relation to one bearing member, for guidance of a motion of the first relative to the second bearing member; an equalizing compound, which is disposed between the at least one sliding/guiding element and the bearing member relative to which is fixed the at least one sliding/guiding element, for adaptation of the guide clearance between the at least one sliding/guiding element and the slide face that is displaceable in relation thereto, the equalizi
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: March 3, 2009
    Assignee: Suspa Holding GmbH
    Inventor: Herbert Muller
  • Patent number: 7461455
    Abstract: A bearing apparatus includes a rotating member, a fixed member opposing the rotating member and an ink-like resin material. Opposing surfaces of the rotating member and the fixed member form a bearing part and the ink-like resin material is applied to at least one of the opposing surfaces by transfer printing.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: December 9, 2008
    Assignees: Nidec Sankyo Corporation, Toyo Drilube Co., Ltd.
    Inventors: Masato Gomyo, Shingo Suginobu, Nobutaka Nagao, Koichi Shoda, Akihito Kobayashi
  • Patent number: 7458158
    Abstract: This invention introduces a new category of engineered surfaces and corresponding production processes for better wear resistance and lower friction loss. The structured surfaces can be applied on many automobile components with frictional surfaces. The composite structure settles the usual conflicts between surface functions and stresses. Two sets of multiple-step processes are introduced to achieve high production efficiency and low cost. Unlike traditional surface technologies that generate single and uniform layers on the whole part surface, the new technology processes the part surface selectively for more effective surfaces with versatile functions.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: December 2, 2008
    Assignee: Federal-Mogul World Wide, Inc.
    Inventors: Yuefeng Luo, Paul Freemantle, William Zdeblick
  • Publication number: 20080292235
    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: Application
    Filed: May 23, 2008
    Publication date: November 27, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Long Than Trong, Satoshi Namba, Nobuyuki Yasu, Kazuma Mukai
  • Patent number: 7340834
    Abstract: A method of lubricating a wave bearing comprising application of an oil comprising a perfluoropolyether, derivatized perfluoropolyether, fluorosilicone, polychlorotrifluoroether, or polyphenyl ether, wherein the oil is capable of sustaining temperatures greater than 121° C., and at an operating speed of up to 1.4 million DN without decomposition.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: March 11, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Jon L. Howell, Gregory Alan Bell
  • Patent number: 7229699
    Abstract: A multilayer sliding bearing includes a rigid metal backing having a metal bearing liner attached thereto. The metal bearing liner includes a metal bearing liner layer which is attached to the bearing surface of the metal backing layer and at least one metal overplate layer deposited over an outer surface of the metal bearing liner layer. The metal bearing liner layer has a layer of hard particles embedded in an outer surface thereof which is adjacent to the inner surface of the at least one metal overplate layer. The bearing may also include a barrier layer interposed between the metal bearing liner layer and the metal over plate layer to inhibit diffusion therebetween and/or promote adhesion of the metal over plate layer to the metal bearing liner layer. The invention may also include a thin metal protective coating layer over the outer surface of the bearing liner and backing layer.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: June 12, 2007
    Assignee: Federal-Mogul Worldwide, Inc.
    Inventors: James R. Toth, Barry Schwab
  • Patent number: 7181842
    Abstract: A method of producing a workpiece forming at least one bearing eye is described, which is divided in the region of the bearing eye along an intended fracture point through a fracture separation, the bearing eye being coated with an anti-friction coating after assembly of the parts. In order to achieve a high load capacity, it is suggested that the bearing eye be processed for a precise fit after assembly of the parts obtained through the fracture separation of the workpiece, before the anti-friction coating is applied to the processed bearing eye surface in a thickness corresponding to the final dimensions.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: February 27, 2007
    Assignee: Miba Gleitlager GmbH
    Inventors: Ulf G. Ederer, Thomas Rumpf, Elisabeth Schneiderbauer
  • Patent number: 7025167
    Abstract: One preferred embodiment of the invention is a shaft to transfer torque in a vehicle including a first member having internal splines and a second member having external splines engagable with the internal splines to allow telescopic movement between the first member and the second member and to transfer torque between the first member and the second member. The external spline has a coating to reduce friction during the telescopic movement. Another preferred embodiment of the invention is a suspension system for a vehicle including a biasing device and the above-described shaft.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: April 11, 2006
    Assignee: Automotive Components Holdings, LLC
    Inventors: Norman Szalony, David Majors, Walt Golembiewski, Jr., Mitch Glowacki, Kenneth Horen
  • Patent number: 6962441
    Abstract: A rotary member such as a member of a bearing, a rotating member of a transmission or a gear for a motor vehicle, includes a base region of a ferrous base material such as a steel. The rotary member is formed with a hydrogen blocking layer formed in a contact surface for contacting with a mating body in a relative motion. The hydrogen blocking layer includes a concentrated portion formed in the base region and made of a substance lower in hydrogen diffusion coefficient than the base material.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: November 8, 2005
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Eiji Hirai, Mitsuhiro Okuhata, Nobuo Kino, Keizo Otani
  • Patent number: 6957489
    Abstract: The aim of the invention is to produce a light-alloy bearing bush with a rough external surface. To achieve this, particles, which are subsequently surrounded in part by the molten metal, are applied to the surface of the casting mould. When the bearing bush is released from the mould, the particles remain in said bush and are subsequently removed from the bearing bush preform either mechanically or by being dissolved in liquid.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: October 25, 2005
    Assignee: Mahle GmbH
    Inventors: Karlheinz Bing, Martin Rühle, Fritz Warth, Frank Winger
  • Patent number: 6951423
    Abstract: A sintered bearing is produced by a production method comprising: compacting a metallic raw material powder into a bearing green compact; sintering the green compact into a sintered compact; forming a resin coating 20 over the entire surface of the sintered compact; removing the resin coating 20 on a bearing surface 14a of the sintered compact; and impregnating a lubricating fluid L through the bearing surface 14a from which the resin coating 20 is removed.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: October 4, 2005
    Assignees: Minebea Co., Ltd., Hitachi Powdered Metals Co., Ltd.
    Inventors: Noriyuki Yoshimura, Katsutoshi Nii
  • Patent number: 6948247
    Abstract: A cylindrical roller bearing or needle roller bearing for use with a rolling raceway surface is subjected to a carbonitriding treatment to produce a layer containing 30 to 80% retained austenite in the vicinity of its surface that contacts a carburized layer of a rolling raceway surface of a roller bearing. The amount of retained austenite of the surface layer of the roller bearing is increased by about 30%. The surface layer is then heat treated to apply a residual compression stress. The surface then receives surface finishing to produce micro concavo-convex portions in a random direction.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: September 27, 2005
    Assignee: Komatsu Ltd.
    Inventors: Osamu Kodama, Kaoru Hasegawa, Nobuaki Kawasaki
  • Patent number: 6926444
    Abstract: A main bearing cap (20) for an internal combustion engine consists of an aluminum alloy with an iron alloy core (10). The cap has a supporting surface (22) for a bearing shell. The iron alloy core has a central portion (13) with two spaced apart through-channels (15) filled with an aluminum alloy (24) forming a coherent mass with an aluminum layer (23) the outer limiting surface of which forms the supporting surface (22).
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: August 9, 2005
    Assignee: Ford Global Technologies, LLC
    Inventor: Staffan Rengmyr
  • Patent number: 6886986
    Abstract: A bearing having bearing elements made of Type 60 Nitinol made by an investment casting process for producing near net shape parts of Nitinol includes making a ceramic mold having a series of spherical cavities, pouring molten Nitinol into the mold cavities, cooling the mold and the Nitinol in the cavities to produce solidified Nitinol balls, and breaking the mold away from the Nitinol balls. Nitinol rods for roller bearings can be made by conventional casting directly from the crucible in a draw-down oven. The bars are hot machined or hot rotary swaged and then centerless ground and laser cut to length, or are first cut to length and then centerless ground individually for crowned roller elements. The balls are broken or cut from the risers, leaving the gates attached, and are consolidated by healing under pressure in a hot isostatic press, then ground to the desired size. The balls or rollers are polished, then treated to create an integral ceramic finish.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: May 3, 2005
    Assignee: Nitinol Technologies, Inc.
    Inventor: Gerald J. Julien
  • Patent number: 6848832
    Abstract: In a rolling bearing put under a working circumstance in which water tends to intrude into lubricants, it has been known such a phenomenon that hydrogen ions formed by decomposition of the lubricants are adsorbed to raceway surfaces and accumulated as hydrogen atoms in highly strained sites (in the vicinity of the position for maximum shearing stress), to cause stress corrosion cracking type peeling. The present invention provides a rolling bearing in which an oxide layer of an iron/chromium oxide series is formed at a thickness of from 1 to 1000 nm to at least one of raceway surfaces of bearing rings or rolling contact surfaces of rolling elements and a manufacturing method thereof.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: February 1, 2005
    Assignee: NSK Ltd.
    Inventors: Hiromichi Takemura, Yasuo Murakami, Youichi Matumoto, Seiji Sato
  • Patent number: 6833339
    Abstract: A bi-metal aluminum bearing includes an aluminum-based bearing layer, a steel backing, and an intermediate aluminum-based layer that has a thickness of from 60 to 120 micrometers positioned between the aluminum-based bearing layer and the steel backing. The intermediate layer has a yield strength that is less than that of the aluminum-based bearing layer and is preferably of pure aluminum. The aluminum-based bearing layer has a fine microstructure which imparts a very high level of conformability while retaining good fatigue strength. The aluminum bearing layer generally includes 4% to 20% by weight lead or tin, up to 26% by weight silicon and up to 2% by weight of any of the elements magnesium, manganese, nickel, zirconium, zinc, copper, or chromium with the remainder of the bearing layer being aluminum.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: December 21, 2004
    Assignee: Federal-Mogul World Wide, Inc.
    Inventors: Warren J. Whitney, Jr., Jeffrey C. Hunter
  • Patent number: 6770235
    Abstract: A method for re-shaping portions of a coating applied to the surface of a component using a tool including a collet having a plurality of flexible arms with a wheel rotatably supported on each of the flexable arms, a nut and a sleeve. The tool is initially installed by disposing the collet caxially about the component. Then, the sleeve is disposed co-axially about the collet. Next, the nut is threaded onto a threaded first end of the collet. As the nut is threaded onto the collet, it engages and moves the sleeve axially toward the arms of the collet thereby causing the arms to be compressed radially inwardly such that outer circumferential surfaces of the wheels engage and re-shape the coating on the outer surface of the component. The tool, as a whole, can then be moved axially back and forth along the surface of the component to re-shape the entire length of the coating thereon.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: August 3, 2004
    Assignee: Torque-Traction Technologies, Inc.
    Inventor: Thomas J. Keller
  • Publication number: 20040064948
    Abstract: A method of producing a workpiece having at least one bearing eye is described, the bearing eye being coated with an anti-friction coating made of an alloy of a harder alloy component and a softer alloy component. In order to achieve an advantageous load capacity, it is suggested that the bearing eye be processed for a precise fit to a circular cylinder before the anti-friction coating is applied to the processed bearing eye surface in a thickness corresponding to the final dimensions, the proportion of the softer alloy component in the deposited alloy being increased with increasing coating thickness.
    Type: Application
    Filed: October 3, 2003
    Publication date: April 8, 2004
    Applicant: Miba Gleitlager GmbH
    Inventors: Thomas Rumpf, E. Schneiderbauer, Helmut Spiessberger
  • Publication number: 20040064949
    Abstract: A method of producing a workpiece (1) having at least one bearing eye (2) is described, the bearing eye (2) being coated with an anti-friction coating (4), which forms a running surface deviating from a circular cylinder. In order to provide advantageous production conditions, it is suggested that the bearing eye (2) be processed for a precise fit to a circular cylinder, before the anti-friction coating (4) is galvanically deposited on the processed bearing eye surface (3) to form the running surface in a varying thickness which corresponds to the final dimensions.
    Type: Application
    Filed: October 3, 2003
    Publication date: April 8, 2004
    Applicant: Miba Gleitlager GmbH
    Inventors: Thomas Rumpf, E. Schneiderbauer, Helmut Spiessberger