Race And Cage Structure Patents (Class 384/621)
  • Patent number: 11118627
    Abstract: A cage (110) for a roller thrust bearing (100), including a first cage half (120) including an annular portion (122), a first flange (130) extending axially from an inner peripheral edge (124) of the annular portion, and a second flange (132) extending axially from an outer peripheral edge (126) of the annular portion, and a second cage half (140) including an annular portion (142), a first flange (150) extending axially from one of an inner peripheral edge (144) and an outer peripheral edge (146) of the annular portion, a second flange (152) extending both axially and radially from the other of the inner peripheral edge and the outer peripheral edge, the second flange including a first flange portion (154) and a second flange portion (156), wherein the second flange portion of the second flange of the second cage half is disk-shaped and is disposed in a plane that is transverse to a longitudinal center axis of the roller retainer cage.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: September 14, 2021
    Assignee: Koyo Bearings North America LLC
    Inventor: Trent L. Carpenter
  • Patent number: 10584743
    Abstract: A bearing includes a cage and rollers disposed between a first raceway surface and a second raceway surface axially facing each other. The cage includes a first guide surface and a second guide surface. The first guide surface is provided on a radially outer portion of the cage, and contacts the first raceway surface when the cage is displaced toward the first raceway surface. A clearance formed between the first guide surface and the first raceway surface is smaller than a clearance at a radially inner portion of the cage. The second guide surface is provided on a radially outer portion of the cage, and contacts the second raceway surface when the cage is displaced toward the second raceway surface. A clearance formed between the second guide surface and the second raceway surface is smaller than a clearance at a radially inner portion of the cage.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 10, 2020
    Assignee: JTEKT CORPORATION
    Inventors: Yuki Shishihara, Shigeo Kamamoto, Junji Murata
  • Patent number: 10422376
    Abstract: A thrust roller bearing includes rollers arranged in a radial manner, an annular cage that retains the rollers such that the rollers are rollable, an annular outer race located on one side of the cage in an axial direction of the cage and having a first raceway on which the rollers roll, and an annular inner race located on the other side of the cage in the axial direction and having a second raceway on which the rollers roll. At least one of the first raceway and the second raceway has a Vickers hardness that is greater than or equal to 800 and less than or equal to 950. The outer circumferential surface of each of the rollers has a Vickers hardness that is greater than or equal to 697 and less than 800.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: September 24, 2019
    Assignee: JTEKT CORPORATION
    Inventor: Yoshihito Nakashima
  • Patent number: 9683606
    Abstract: A washer (5) to be mounted to an end surface (14) of an inner ring includes an extension portion (52) extending along an outer peripheral surface (15) of the inner ring. The extension portion (52) includes an engaging projection portion (53) to be engaged with an engaging recessed portion (16) formed in the outer peripheral surface (15) of the inner ring. The engaging projection portion (53) includes a rounded curved surface portion (55), and a flat surface portion (54) formed continuously with a forward side in a pressing direction of the rounded curved surface portion (55) and inclined radially outward.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: June 20, 2017
    Assignee: NTN CORPORATION
    Inventor: Tomoki Matsushita
  • Patent number: 9611890
    Abstract: The invention is for an outer ring which has a flange formed with engaging hooks for assembly with a retainer. An object is to prevent the outer ring from catching each another in manufacturing steps. A thrust bearing includes an outer ring which has a flange provided with radially inward-protruding engaging hooks. Each engaging hook has an amount of protrusion which is not greater than a height of the flange tip edge of a hypothetical outer ring. This arrangement prevents any of the engaging hooks of the outer ring from being caught by the flange of another outer ring.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 4, 2017
    Assignee: NTN CORPORATION
    Inventor: Haruki Yamada
  • Patent number: 9506219
    Abstract: A support rail for a swing gear assembly having a thrust rail coupled to a swing gear includes a substantially horizontal first surface configured to be coupled to the swing gear such that the first surface engages a substantially horizontal top face of the swing gear, and a substantially vertical second surface intersecting the substantially horizontal first surface such that the second surface is substantially perpendicular to the first surface. The second surface is configured to engage a substantially vertical face of the thrust rail when the first surface is coupled to the swing gear. The first surface and the second surface are configured to inhibit a rotation of the thrust rail relative to the swing gear by engaging the top face of the swing gear and the vertical face of the thrust rail simultaneously.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: November 29, 2016
    Assignee: Caterpillar Global Mining LLC
    Inventors: David T. Bienfang, Gurbachan S. Bumraw, Carl D. Gilmore, Philip R. Strydom, Christopher R. Wanasek, Jeanne Yaunke
  • Patent number: 9115757
    Abstract: A bearing for a shaft of a printing technology machine includes a bearing housing composed of an upper part and a lower part. The bearing housing has a bore for receiving a rolling-contact bearing for the shaft. The upper part and the lower part are separated by an interstice disposed in the region of the bore. The rolling-contact bearing is an axial bearing including at least one rolling body cage and at least one race washer having an annular shape. The race washer is clamped between the upper part and the lower part, which both exert a radial pressure on an outer circumferential surface of the race washer.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: August 25, 2015
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Juergen Rothaug
  • Patent number: 8961029
    Abstract: Construction of a roller thrust bearing is achieved wherein it is possible to keep a thrust race from coming apart from a cage without wear or cracking occurring in a cage element and without impact occurring between the thrust race and cage even when used in an application wherein a rotating section rotates at high speed, or when used in an application wherein relative displacement between members of a rotating section is large. The thickness of metal plate of a first cage element 35 is preferably ? the thickness of metal plate of a second cage element 36 or less. Alternatively, the thickness of metal plate of a second cage element 56 is preferably ? the thickness of metal plate of a first cage element 55 or less.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: February 24, 2015
    Assignee: NSK Ltd.
    Inventors: Ryosuke Yamada, Tomoyuki Yokota
  • Patent number: 8950945
    Abstract: A roller bearing for a tunneller having an inner ring, an outer ring, two sets of rolling elements arranged between the tracks formed on the rings, the first set of rolling elements including at least one roller able to withstand axial stresses and the second set of rolling elements including an angular-contact roller that is able to withstand both radial and axial stresses, the inner and outer rings being concentric about an axis of rotation of the roller bearing. Each roller in the first set includes a first axis of revolution (Y1-Y1) inclined in relation to the axis of rotation (X-X) by a first angle (?1) of between 45° and 95° and each roller in the second set includes a second axis of revolution (Y2-Y2) inclined in relation to the axis of rotation (X-X) by a second angle (?2) of between 0° and 45°.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize
  • Patent number: 8920040
    Abstract: A rolling-element bearing includes an inner ring and an outer ring having at least two adjacently disposed raceways for at least two rows of rolling elements. In order to avoid or reduce corrosion on the raceways of the outer ring caused by condensation forming on the outer raceway, the outer ring has at least one radially-outwardly-extending groove in the axial region between its at least two raceways for collecting condensation at a location away from the raceways.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: December 30, 2014
    Assignee: Aktienbolaget SKF
    Inventors: Josef Brameshuber, Hubert Friedrich Koettritsch, Gerhard Strohmayr
  • Patent number: 8882361
    Abstract: Between an inner race and an outer race, a plurality of thrust rollers supporting the inner race and the outer race capable of relative rotation are provided. A thrust cage for retaining each thrust roller capable of rolling is composed of a plurality of cage separate bodies separated and arranged in a roller accommodating space. The cage separate body has two projecting portions having a semicircular cross-sectional shape provided on an outer wall surface of an outside connecting portion spaced apart from each other in a peripheral direction of the outer race. With relative rotation between the inner race and the outer race, when each cage separate body is displaced toward an inner peripheral surface side of the outer race, a top portion of each projecting portion is brought into contact with the inner peripheral surface of the outer race.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: November 11, 2014
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventor: Shinichi Sekido
  • Patent number: 8827566
    Abstract: Construction of a thrust roller bearing with races is achieved in which a function of preventing a cage 3, first thrust race 4a and second thrust race 5a from separating from each other can be maintained, the amount of eccentricity that is allowed between a pair of members that rotate relative to each other can be increased, and the amount of lubricant that can flow inside the bearing can be increased. The outer diameter of the outer-diameter side flange 8a that is formed around the outer circumferential edge section of the first thrust race 4a is 60 mm to 120 mm, the inner diameter of the inner-diameter side flange 11a that is formed around the inner-circumferential edge section of the inner-diameter side flange 5a is 40 mm to 80 mm, and the internal gap is 1 mm to 2 mm. Therefore, outer-diameter side locking sections 9a are intermittently formed in the circumferential direction on the tip-end edge of the outer-diameter side flange 8a.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: September 9, 2014
    Assignee: NSK Ltd.
    Inventors: Hiromichi Takemura, Yutaka Kondou
  • Patent number: 8821028
    Abstract: An axial bearing assembly which essentially is formed of two axial rolling bearings (1, 2) between which a circular ring-shaped carrier component (3) is arranged. Each of the axial rolling bearings (1, 2) has a first ring-shaped bearing disk (6, 7) seated against one of the axial sides (4, 5) of the carrier component (3) and a second ring-shaped bearing disk (8, 9) for fastening to additional components of the surrounding construction which are arranged axially on both sides of the carrier component (3) and which each consist of a thin steel plate. A plurality of rolling elements (14, 15) arranged next to each other additionally roll between the axial inner sides (10, 11 and 12, 13) of the bearing discs (6, 7, 8, 9) and are held at a uniform spacing from each other by a respective bearing cage (16, 17) and together therewith form a needle roller and cage assembly (18, 19).
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: September 2, 2014
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Wolfgang Fugel, Andreas Kirschner, Alexander Reimchen, Martin Gegner
  • Publication number: 20140169721
    Abstract: A thrust race of a thrust roller bearing has a race portion and a cylindrical portion extending from the race portion in an axial direction. At a plurality of locations along a circumferential direction on the cylindrical portion, cutout portions are formed such that each of the cutout portions is recessed in the axial direction from a distal edge of the cylindrical portion toward the race portion. A protrusion is provided at a portion closer to the race portion from a bottom edge of each of the cutout portions such that the protrusion protrudes in a radial direction from the cylindrical portion toward a side away from the race portion. The protrusion serves as a race-retaining locking portion to prevent a race from moving out from a mating member on which the race is mounted.
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Applicant: NSK LTD.
    Inventors: Hiroyuki HARA, Kazuhiko KANOU, Tomoyuki YOKOTA
  • Publication number: 20140147071
    Abstract: Construction of a thrust roller bearing with races is achieved in which a function of preventing a cage 3, first thrust race 4a and second thrust race 5a from separating from each other can be maintained, the amount of eccentricity that is allowed between a pair of members that rotate relative to each other can be increased, and the amount of lubricant that can flow inside the bearing can be increased. The outer diameter of the outer-diameter side flange 8a that is formed around the outer circumferential edge section of the first thrust race 4a is 60 mm to 120 mm, the inner diameter of the inner-diameter side flange 11a that is formed around the inner-circumferential edge section of the inner-diameter side flange 5a is 40 mm to 80 mm, and the internal gap is 1 mm to 2 mm. Therefore, outer-diameter side locking sections 9a are intermittently formed in the circumferential direction on the tip-end edge of the outer-diameter side flange 8a.
    Type: Application
    Filed: August 28, 2012
    Publication date: May 29, 2014
    Applicant: NSK Ltd.
    Inventors: Hiromichi Takemura, Yutaka Kondou
  • Publication number: 20130301974
    Abstract: Construction of a roller thrust bearing is achieved wherein it is possible to keep a thrust race from coming apart from a cage without wear or cracking occurring in a cage element and without impact occurring between the thrust race and cage even when used in an application wherein a rotating section rotates at high speed, or when used in an application wherein relative displacement between members of a rotating section is large. The thickness of metal plate of a first cage element 35 is preferably ? the thickness of metal plate of a second cage element 36 or less. Alternatively, the thickness of metal plate of a second cage element 56 is preferably ? the thickness of metal plate of a first cage element 55 or less.
    Type: Application
    Filed: February 2, 2012
    Publication date: November 14, 2013
    Inventors: Ryosuke Yamada, Tomoyuki Yokota
  • Patent number: 8448430
    Abstract: A thrust roller bearing includes a plurality of rollers, a retainer, an annular first track ring having a track surface, an outer periphery flange part, and a first claw part, and an annular second track ring having a track surface, an inner periphery flange part, and a second claw part. Bearing internal gaps to allow the eccentric rotation of the first track ring and the second track ring are provided between the outer periphery flange part and an outer edge part of the retainer, and between the inner periphery flange part and an inner edge part of the retainer. In addition, at least one of the first and second claw parts is a projection part formed by a bending process. Furthermore, an edge part of the retainer opposed to the projection part has a first slope part formed at a corner part on the side opposed to the track surface, and a second slope part having a radial length relatively shorter than that of the first slope part, and formed at a corner part on the opposite side in a thickness direction.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: May 28, 2013
    Assignee: NTN Corporation
    Inventors: Rino Fukami, Kazuyuki Yamamoto, Katsufumi Abe
  • Patent number: 8388233
    Abstract: The invention relates to a first bearing arrangement (1) and a method for the manufacture thereof, with a first bearing ring (3) forming a structural unit (16) with a radially inwardly directed axial projection (11) with a radially outwardly directed resilient element (13) and a first running surface (5), and a second bearing ring (2) with a radially outwardly arranged axial projection (10) with a radially inwardly directed resilient element (12), with a second running surface (4), and a single-piece rolling body cage (6) which receives distributed over the circumference rolling bodies (8) which roll on the running surfaces (4, 5), wherein the rolling body cage (6) radially engages over the two resilient elements (12, 13).
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: March 5, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: James Kevin Brown
  • Patent number: 8177438
    Abstract: A double row thrust roller bearing includes a pair of inner and outer cages arranged radially in two rows in separate coaxial relation, each cage including an annular inner peripheral wall, an annular outer peripheral wall, a plurality of pillar portions interconnecting the annular inner and outer peripheral walls at intervals in a circumferential direction thereof, and a plurality of pockets each formed between the adjacent pillar portions. Rollers are rotatably held and retained respectively in the pockets. The annular inner peripheral wall of the inner cage is guided by an annular flange formed at an inner peripheral edge of one race, and the annular inner peripheral wall of the outer cage is guided at an inner periphery thereof by the annular outer peripheral wall of the inner cage.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: May 15, 2012
    Assignee: JTEKT Corporation
    Inventor: Yoshitaka Waseda
  • Patent number: 8157446
    Abstract: A cage for a roller bearing comprises a base body with a plurality of pockets for the reception of the roller elements of the roller bearing. At least a part of the surface of the base body is coated with a layer consisting of or containing fullerene-like carbon nitride (FL-CNx), wherein an inter-layer of chromium (Cr) or aluminum (Al) or molybdenum (Mo) or titanium (Ti) or tungsten (W) or a diamond-like coating (DLC) or a metal-mix diamond-like coating (Me-DLC) is arranged between the surfaces of the base body and the layer consisting of or containing fullerene-like carbon nitride.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: April 17, 2012
    Assignee: Aktiebolaget SKF
    Inventors: Steuart Horton, Lars Hultman
  • Publication number: 20110186005
    Abstract: A piston rolling thrust bearing construction is constituted of a pair of bearing plates with opposing faces disposed in a spaced alignment with a rolling ball assembly positioned between the opposing faces to support relative movement between the bearing plates. The piston rolling thrust bearing is mounted to the open end of the skirt of a piston disposed in a cylinder to compensate for non-axial motion relative to the cylinder axis due to the articulating motions of connecting elements or any structural misalignments within an engine drive train assembly.
    Type: Application
    Filed: February 2, 2011
    Publication date: August 4, 2011
    Applicant: Achates Power, Inc.
    Inventors: James U. Lemke, Patrick R. Lee, William B. McHargue, Bryant A. Wagner
  • Publication number: 20110158573
    Abstract: A thrust race of a thrust roller bearing has a race portion and a cylindrical portion extending from the race portion in an axial direction. At a plurality of locations along a circumferential direction on the cylindrical portion, cutout portions are formed such that each of the cutout portions is recessed in the axial direction from a distal edge of the cylindrical portion toward the race portion. A protrusion is provided at a portion closer to the race portion from a bottom edge of each of the cutout portions such that the protrusion protrudes in a radial direction from the cylindrical portion toward a side away from the race portion. The protrusion serves as a race-retaining locking portion to prevent a race from moving out from a mating member on which the race is mounted.
    Type: Application
    Filed: February 24, 2010
    Publication date: June 30, 2011
    Applicant: NSK LTD.
    Inventors: Hiroyuki Hara, Kazuhiko Kanou, Tomoyuki Yokota, Tetsuya Takahashi
  • Patent number: 7963703
    Abstract: A thrust roller bearing including: a pair of races each of which has an annular plate; a cage interposed between the pair of races, formed by a single annular plate including a bent portion bent in an intermediate region in a radial direction of the cage such that a plurality of projecting portions to project in a thickness direction of the cage are formed on a first side and a second side of the cage, and a plurality of pockets stamped out in the thickness direction at predetermined intervals in a circumferential direction of the cage; and a plurality of rollers received respectively in the pockets. At least two projecting portions are formed on each of the first side and the second side of the cage; and a plurality of race-contacting projection portions are arranged on a surface of at least one of the two projecting portions on at least one of the first side and the second side of the cage at predetermined intervals in the circumferential direction of the cage.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: June 21, 2011
    Assignee: JTEKT Corporation
    Inventors: Wataru Takamizawa, Hiroshi Sato, Kanji Kawasaki, Masaki Toyama
  • Patent number: 7942586
    Abstract: In a thrust needle bearing employing lubricating oil and having rollers held by a cage and rolling on races, the value of the arithmetic average roughness Ra of roller is 0.03 to 0.15 ?m. Even when the bearing is used under the conditions where lubrication is lean or lubrication characteristics are wrong, the rolls can be prevented from being worn at the contact parts thereof with the pocket guide face of the cage and the life of the rollers and races can be increased.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: May 17, 2011
    Assignee: NTN Corporation
    Inventors: Kenji Tamada, Hideyuki Tsutsui
  • Patent number: 7878715
    Abstract: A cage of a thrust roller bearing includes: a pair of crank-shaped bent portions arranged in a circumferential direction of the cage; a pair of inner wall surfaces arranged in a radial direction of the cage; and a pocket for housing a roller defined by the pair of bent portions and the pair of inner wall surfaces and formed by punching the cage. Radially inner one of the inner wall surfaces is formed as a guiding surface for guiding a substantial roller PCD position of an end surface of the roller. Each of the pair of bent portions includes a first extended portion extending in one of cage thickness directions and a second extended portion extending in the other cage thickness direction. A roller retaining pawl for retaining the roller is provided at each of the first and second extended portions so as to protrude into the pockets.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: February 1, 2011
    Assignee: Jtekt Corporation
    Inventors: Kazuyuki Kotani, Yoshihito Nakashima
  • Publication number: 20110019954
    Abstract: The invention relates to an axial bearing arrangement (1) and a method for the manufacture thereof, with a first bearing ring (3) forming a structural unit (16) with a radially inwardly directed axial projection (11) with a radially outwardly directed resilient element (13) and a first running surface (5), and a second bearing ring (2) with a radially outwardly arranged axial projection (10) with a radially inwardly directed resilient element (12), with a second running surface (4), and a single-piece rolling body cage (6) which receives distributed over the circumference rolling bodies (8) which roll on the running surfaces (4, 5), wherein the rolling body cage (6) radially engages over the two resilient elements (12, 13).
    Type: Application
    Filed: July 21, 2010
    Publication date: January 27, 2011
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventor: James Kevin BROWN
  • Patent number: 7707723
    Abstract: A method is provided for producing a roller thrust bearing having a plurality of rows of rollers, the bearing featuring reduced differential slip, reduced friction and wear, and increased longevity without flaking. The method includes forming a cage to accommodate the rollers, crowning the rollers, and arranging the rollers in pockets such that the rollers held by a pocket have respective end surfaces in direct contact with each other.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: May 4, 2010
    Assignee: NTN Corporation
    Inventors: Kenji Tamada, Kikuo Maeda, Tomoaki Kawamura, Hirokazu Nakashima, Takumi Fujita, Mitsuo Sasabe
  • Publication number: 20100058750
    Abstract: A thrust roller bearing includes a plurality of rollers, a retainer, an annular first track ring having a track surface, an outer periphery flange part, and a first claw part, and an annular second track ring having a track surface, an inner periphery flange part, and a second claw part. Bearing internal gaps to allow the eccentric rotation of the first track ring and the second track ring are provided between the outer periphery flange part and an outer edge part of the retainer, and between the inner periphery flange part and an inner edge part of the retainer. In addition, at least one of the first and second claw parts is a projection part formed by a bending process. Furthermore, an edge part of the retainer opposed to the projection part has a first slope part formed at a corner part on the side opposed to the track surface, and a second slope part having a radial length relatively shorter than that of the first slope part, and formed at a corner part on the opposite side in a thickness direction.
    Type: Application
    Filed: December 20, 2007
    Publication date: March 11, 2010
    Inventors: Rino Fukami, Kazuyuki Yamamoto, Katsufumi Abe
  • Patent number: 7608010
    Abstract: The invention generally relates to the improved performance of the rear planetary gear in an automobile transmission. In particular, the invention relates to a new and improved thrust bearing assembly capable of sustaining performance of the rear planetary under more severe stress, and prolonging its life over much longer periods of time, than the OEM bearing. More particularly, the invention relates to a novel bearing assembly designed to replace the OEM bearings in the General Motors [GM] 4L60, 4L60E, and 700R4 transmissions which have a long history of rear planetary failures.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: October 27, 2009
    Inventor: James D. Briscoe
  • Publication number: 20090123106
    Abstract: Thrust bearing device 1 comprising a first ring 4, a second ring 5, a row of rolling elements 6 arranged between the rings, a cage 7 for retaining the rolling elements 6 and a sleeve 8 for retaining the said rings, the retaining cage 7 and sleeve 8 being produced from deep-drawn sheet metal, the sleeve comprising a retaining portion 8b extending radially outwards, the retaining portion 8b being inscribed within a circle having a diameter substantially equal to the bore of the said cage 7.
    Type: Application
    Filed: June 23, 2008
    Publication date: May 14, 2009
    Inventors: Jerome Boussaguet, Romuald Lescorail, Samuel Viault, Christophe Houdayer
  • Patent number: 7513043
    Abstract: A support structure carries a thrust load of a transmission which includes a torque converter having an impeller and a turbine opposite to each other with a stator therebetween. A thrust needle roller bearing having needle rollers arranged in two rows is provided at, at least one of places respectively between the stator and the impeller and between the stator and the turbine. The support structure carrying a thrust load of the transmission, a method of manufacturing the support structure and the thrust needle roller bearing are thus obtained, with an improvement in inflow and outflow of a lubricating oil, a reduction of the differential slip of the needle rollers, and an improvement in strength durability.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: April 7, 2009
    Assignee: NTN Corporation
    Inventors: Kousuke Obayashi, Tetsuya Hayashi, Shinji Oishi
  • Patent number: 7478948
    Abstract: A rotary mechanism uses a rolling element, an outer-ring housing member and an inner-ring housing member. The outer-ring housing member or the inner-ring housing member is divided thicknesswise into two parts, to have a gap at between the two-divided parts of the housing member. Due to this, slide resistance can be caused by deforming the rolling element received in the outer-ring and inner-ring housing members.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: January 20, 2009
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventor: Koji Noda
  • Patent number: 7419036
    Abstract: A disc brake for vehicles, in particular to a pneumatically actuated disc brake for utility vehicles, is provided. The disc brake includes a brake caliper and an application device for applying the brake. The application device has a first component in the form of a rotary lever, which is displaceably guided on a second element, such as a surface of the brake caliper, by way of a needle bearing. The disc brake is characterized in that the inner ring of the needle bearing is embodied as a bearing cage made of plastic, the cage enclosing on its outside an evenly configured ring of sheet metal serving as the bearing exterior.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: September 2, 2008
    Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Franz-Josef Birkeneder
  • Patent number: 7104699
    Abstract: A first race component includes a flat, circular raceway portion, defined about an axis, and an axially extending lip portion. A plurality of needle rollers is arranged radially with respect to the axis for rolling contact with the flat raceway. A bearing cage retains the needle rollers and is engageable with the lip portion of the first component for piloting of the bearing cage. A second race component, made of different material, includes a flat portion in contact with the raceway portion of the first race component and a lip portion extending axially and radially from the flat portion and beyond the lip portion of the first race component such that the second race component is engageable by the bearing cage to hold the first race component, the second race component and the bearing cage together as an assembly.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 12, 2006
    Assignee: Timken US Corporation
    Inventors: Charles W. Shattuck, Robert D. Richtmeyer, Richard F. Murphy
  • Patent number: 6904681
    Abstract: The present invention is a method for fabricating a driving and locking mechanism. The present invention provides a bearing device having a first end and a second end, where the first end has a curvilinear shape. The present invention also provides a strip of metal material with a predetermined length, conforming the strip of metal material to the curvilinear shape of the first end and attaching the strip of metal material to the first end.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: June 14, 2005
    Assignee: Dana Corporation
    Inventor: Steven G. Slesinski
  • Patent number: 6905250
    Abstract: A thrust bearing assembly including a plurality of rollers having a given diameter d, a cage assembly configured to support the rollers, the cage assembly having a first radial edge that extends a given radial distance X beyond the rollers, and at least one thrust race member. The thrust race member includes a radial race surface, a radial flange extending from the race surface, and a radial lip extending from the flange. The lip is substantially parallel to and at a distance less than the given diameter d from the race surface. The lip has a free end at a distance from the flange greater than the given distance X.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: June 14, 2005
    Assignee: Timken US Corporation
    Inventors: John J. Lynch, Edward P. Butler, III, Edward C. Axler
  • Publication number: 20040146233
    Abstract: A thrust bearing assembly including a plurality of rollers having a given diameter d, a cage assembly configured to support the rollers, the cage assembly having a first radial edge that extends a given radial distance X beyond the rollers, and at least one thrust race member. The thrust race member includes a radial race surface, a radial flange extending from the race surface, and a radial lip extending from the flange. The lip is substantially parallel to and at a distance less than the given diameter d from the race surface. The lip has a free end at a distance from the flange greater than the given distance X.
    Type: Application
    Filed: January 29, 2003
    Publication date: July 29, 2004
    Applicant: The Torrington Company
    Inventors: John J. Lynch, Edward P. Butler, Edward C. Axler
  • Publication number: 20040091192
    Abstract: An object is to provide a cage and a thrust roller bearing with improved oil passage performance of a lubricating oil in the inside of a bearing while holding a needle roller in a stable manner so as to ensure excellent durability. The thrust roller bearing includes a needle roller and a cage holding the needle roller in pockets for accommodating the same. A length La of a roller holding portion provided in the pocket is set to be within a range of 30% to 80% of a length in a radial direction of the pocket.
    Type: Application
    Filed: November 6, 2003
    Publication date: May 13, 2004
    Applicant: NTN Corporation
    Inventors: Tetsuya Hayashi, Kousuke Obayashi, Shinji Oishi
  • Patent number: 6712520
    Abstract: A cage is made of a low carbon steel and is for use in a rolling bearing which includes an outer ring, an inner ring and a plurality of rolling elements disposed rotationally between the outer ring and the inner ring. The cage includes a plurality of pockets for retaining the rolling elements in an equi-distribution in the rotating direction of the rolling elements. The low carbon steel is a steel containing from 0.02 to 0.10% by weight of C and from 0.10 to 0.45% by weight of Mn and is subjected to plastic working. The hardness for the pocket surface at least at a portion in contact with the rolling element is Hv 190 to 270, and the hardness for the core portion in the cage section is Hv 110 to 170.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: March 30, 2004
    Assignee: NSK Ltd.
    Inventors: Koji Ueda, Keijiro Yamaguchi, Shinichi Tsunashima, Takashi Murai, Osamu Fujii
  • Publication number: 20040052440
    Abstract: A thrust needle roller bearing and a method for manufacturing the bearing with improved lubricant circulating ability, reduced drilling abrasion of the cage, and improved durability of the bearing has a plurality of needle rollers and two annular cages. Each of the cages is formed with a plurality of pockets. Each pocket has a radial length longer than the height of the roller. The two annular cages hold the needle rollers by sandwiching them between the cages within roller holding portions formed in the pockets. The radial length of each of the roller holding portions of the cages is formed shorter than the height of the roller. The two cages are assembled by folding them as a unit so that both the portions of the unit on either radially outer and inner side of the roller holding portions have their axial thickness smaller than that of the roller holding portions. The two cages are secured to one another at both their radially outermost and innermost end portions.
    Type: Application
    Filed: July 1, 2003
    Publication date: March 18, 2004
    Inventors: Tetsuya Hayashi, Kousuke Obayashi, Shinji Oishi
  • Publication number: 20030086632
    Abstract: A bearing assembly includes a first race with an axially extending section and a radially extending section, a second race with an axially extending section and a radially extending section, a cage supported between the first and second races, and a plurality of rolling elements circumferentially spaced within openings formed in the cage. A radial lubrication passage with an inlet and an outlet extends through at least a portion of the cage. The radially extending section of the first race and the axially extending section of the second race define a first annular gap. The radially extending section of the second race and the axially extending section of the first race define a second annular gap. Preferably, the inlet is in fluid communication with the first annular gap and the outlet extends axially through the cage and is aligned with the second annular gap.
    Type: Application
    Filed: November 8, 2001
    Publication date: May 8, 2003
    Applicant: The Torrington Company
    Inventors: Eric R. Richard, David R. Moulton
  • Publication number: 20030063828
    Abstract: A first race component includes a flat, circular raceway portion, defined about an axis, and an axially extending lip portion. A plurality of needle rollers is arranged radially with respect to the axis for rolling contact with the flat raceway. A bearing cage retains the needle rollers and is engageable with the lip portion of the first component for piloting of the bearing cage. A second race component, made of different material, includes a flat portion in contact with the raceway portion of the first race component and a lip portion extending axially and radially from the flat portion and beyond the lip portion of the first race component such that the second race component is engageable by the bearing cage to hold the first race component, the second race component and the bearing cage together as an assembly.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Applicant: The Torrington Company
    Inventors: Charles W. Shattuck, Robert D. Richtmeyer, Richard F. Murphy
  • Publication number: 20030063829
    Abstract: There is provided a roller thrust bearing providing reduced differential slip, free of significant friction and wear, and providing increased longevity against flaking. The present invention provides a thrust bearing in the form of a roller thrust bearing including at least two radially arranged rows of rollers and a cage holding the rollers, the rollers including at least one roller crowned.
    Type: Application
    Filed: September 20, 2002
    Publication date: April 3, 2003
    Applicant: NTN Corporation
    Inventors: Kenji Tamada, Kikuo Maeda, Tomoaki Kawamura, Hirokazu Nakashima, Takumi Fujita, Mitsuo Sasabe
  • Patent number: 6520685
    Abstract: Rollers are aligned radially within a bearing cage, for rolling contact with a first thrust washer concentric with the bearing cage. The first thrust washer has a flat raceway portion and a curled portion that wraps around a portion of the bearing cage to retain the bearing cage and the first thrust washer together as an assembly. The curled portion includes a rim that extends radially 360 degrees with respect to the axis of the thrust washer and has a folded configuration such that a doubled portion is offset with respect to an axial midpoint of the thrust bearing to prevent the thrust bearing from being installed with a reversed orientation.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: February 18, 2003
    Assignee: The Torrington Company
    Inventor: Matthew G. Urmaza
  • Patent number: 6116787
    Abstract: Two race washers (3 and 4) of a thrust rolling bearing comprise on a peripheral edge two collars (5 and 6) directed towards each other so that an annular gap (7) is formed. The rim (8) of the cage (2) is guided in this annular gap (7).
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: September 12, 2000
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Leo Muntnich, Wolfgang Steinberger
  • Patent number: 6106158
    Abstract: A thrust roller bearing assembly includes first and second raceway members (1, 2), a plurality of rolling elements (4), and a generally plate-like annular roller retainer (3) having a plurality of pockets (7) defined therein in a circumferentially extending row. The rolling elements (4) are rollingly accommodated within the corresponding pockets (7), and each of the pockets (7) is delimited by opposite side faces (7a) and opposite end faces (7b). A plurality of projections (8, 9) are formed in each of the opposite side faces (7a) defining the respective pocket (7) in the roller retainer (3), so as to protrude into the respective pocket (7). Some (8) of the projections (8, 9) in each of the opposite side faces (7a) being formed with respective roller retaining pawls (11) positioned adjacent one principal surface of the retainer (3) while the remaining projections (9) are formed with respective roller retaining pawls (12) positioned adjacent the other principal surface of the retainer (3).
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: August 22, 2000
    Assignee: NTN Corporation
    Inventors: Tetsuya Hayashi, Hideki Akamatsu, Kazuyuki Yamamoto
  • Patent number: 6036374
    Abstract: A cam (23) provides a rotating guide surface (33) for the cage (30) of the roller elements (25, 26) of a bearing (22) used to support the load on the cam of an axial piston pump (11) that uses pistons (17, 18) having no shoes or slippers. The rotating guide surface (33) is provided by extending a cylindrical surface (34) from the rotating cam (23) through the inside diameter, or around the outside diameter of the rolling element cage (30), concentric to the centerline of rotation.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: March 14, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Robert E. Fisher, Abhay Kumar
  • Patent number: 5938349
    Abstract: A thrust bearing includes a flange formed on the outside of only a first bearing washer, a second bearing washer formed into a simple flat plate, a notch having a rectangular cross-section formed on the outside of the second bearing washer, and a leading edge of the flange bent so that it is inserted into the notch.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: August 17, 1999
    Assignee: Nippon Thompson Co., Ltd.
    Inventor: Yoshitaka Ogawa
  • Patent number: 5927868
    Abstract: Rolling elements are positioned between two thrust washers that are retained together as an assembly. One of the thrust washers has one or more one-way assembly tabs extending radially outwardly beyond the axially extending lip of the other thrust washer to provide an interference with a housing to prevent the thrust bearing assembly from being installed on the pilot surface of the housing "backwards". A remaining perimeter portion of the thrust washer adjacent to the one-way assembly tabs has a maximum radius less than the radius of the axially extending lip of the first thrust washer to facilitate flow of lubricant.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: July 27, 1999
    Assignee: The Torrington Company
    Inventors: Paul W. Critchley, Thomas G. Rhoads
  • Patent number: 5879086
    Abstract: An axial rolling bearing with a cage (2) comprising radially directed elastic projections (7, 8) on its inner and/or outer peripheral surface, which elastic projections (7, 8) bear against the collar (6, 5) of the race discs (4, 3) under all operating conditions of the bearing so that the cage (2) is radially centered, even if the shaft lifts off in axial direction.
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: March 9, 1999
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Leo Muntnich, Herbert Zettner