Roller Structure Or Orientation; Plural Axially Spaced Rows Or Tandem Thrust Patents (Class 384/619)
  • Patent number: 10968701
    Abstract: An apparatus for driving a drillable drill bit of a drilling assembly and a method of manufacturing of the apparatus for driving the drillable drill bit is provided. The apparatus employs a drilling assembly that includes one of a casing string or a tubular string suspendable in a borehole and a drill pipe housed within one of the casing string or the tubular string. The drillable drill bit is fixed at the bottom of the drill pipe. The drilling assembly further includes a plurality of motors mounted circumferentially on the one of casing string or tubular string, wherein the plurality of motors is attached to wall of the one of casing string or tubular string and are partially outside the one of casing string or tubular string in the borehole, and the plurality of motors are configured to drive the drillable drill bit.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: April 6, 2021
    Assignee: Steel Space Casing Drilling Ltd.
    Inventor: Alan Phillips
  • Patent number: 10821050
    Abstract: The apparatus is configured for applying chest compressions to a patient to apply CPR. The apparatus includes a housing configured to mount the apparatus to the patient, a unidirectional motor, and a plunger connected to the unidirectional motor, the plunger configured to apply the chest compressions to the patient when the motor is operated. The apparatus may include a device configured to control a compression distance of compressions. The apparatus is simpler, lighter and eliminates complicated motor control required in prior devices.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: November 3, 2020
    Assignee: HEARTSAVR TECHNOLOGIES, INC.
    Inventor: Richard Howard Rubin
  • Patent number: 10576782
    Abstract: An apparatus for a vehicle is provided that includes a spindle sleeve with a spindle sleeve inner surface axis. The spindle sleeve has a spindle sleeve outer surface axis that is not coaxial with the spindle sleeve inner surface axis. A hub with a hub axis coaxial with the spindle sleeve outer surface axis is also present. Also included are first and second bearings within the hub, and a containment seal that engages the hub and the spindle sleeve. A sleeve washer is included, and the containment seal is located between the first bearing and the sleeve washer in an axial direction of the hub.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: March 3, 2020
    Assignee: Compagnie Generale Des Etablissements Michelin
    Inventor: Zachary Alexander Merrill
  • Patent number: 10578153
    Abstract: Provided is a multi-row ball bearing that includes an outer ring, an inner ring, and two or more rows of balls retained by raceway surfaces of the outer and inner rings. Each of the raceway surfaces is formed as a Gothic arch groove, and the outer and inner rings are division races that are divided on at least one of the raceway 5 surfaces at a middle position of the raceway surface.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: March 3, 2020
    Assignee: NSK LTD.
    Inventor: Yuki Sakaguchi
  • Patent number: 10228017
    Abstract: A carrier hub assembly includes a carrier hub and a bearing assembly. The carrier hub includes an end portion having a first face surface and a second face surface. The bearing assembly includes a first bearing positioned on the first face surface and a second bearing positioned on the second face surface. Each bearing includes a pair of washers forming a pair of races, a cage, and a plurality of rolling elements. The bearing assembly further includes a connecting sleeve connecting the first bearing to the second bearing. The connecting sleeve retains the first bearing and the second bearing on the carrier hub.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: March 12, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Dennis Roffe, James Kevin Brown, Charles Schwab
  • Patent number: 9995340
    Abstract: The spacer for rolling bearing comprises an inner ring, an outer ring and at least one row of angular contact rollers disposed between raceways provided on the rings. The spacer comprises two opposite faces 17 having a concave profile adapted to the rollers, at least one of said faces comprising two contact surfaces 17a, 17b with the associated roller and a concave recess 17c extending between said contact surfaces and directed outwards towards said roller.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: June 12, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventors: Pascal Ovize, Jean-Baptiste Magny
  • Patent number: 9593533
    Abstract: An apparatus including a housing, a shaft rotatably extending through the housing, and a bearing assembly for supporting the shaft within the housing, wherein the bearing assembly includes a focal bearing assembly for accommodating tilting of the shaft within the housing and a thrust bearing assembly for transferring thrust loads between the housing and the shaft, and wherein the thrust bearing assembly includes at least two thrust bearings arranged in a load sharing configuration and complementary oblique thrust surfaces for transferring thrust loads through the thrust bearings.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: March 14, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Kennedy J. Kirkhope
  • Patent number: 9360045
    Abstract: A double row thrust bearing assembly (10) includes a bottom plate (11) having inner and outer conical raceways (12, 13), a top plate (14) with a flat raceway (15), and respective sets of identically formed inner and outer rollers (16, 17) mounted on respective inner and outer cages (18, 19). When the bearing is fully assembled, the apices of the inner and outer rollers directed at the same point (A) on an axis (X) of the bearing. Various relationships with respect to the size and shapes of the rollers are determined in order to maximize the bearing assembly's load carrying capacity while occupying the same spatial envelope as that of a single row thrust bearing assembly (BA) which can only support a lesser load.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: June 7, 2016
    Assignee: The Timken Company
    Inventors: Xiaolan Ai, Thomas L. Baker, Jesse R. Yorty, Stephen P. Johnson
  • Patent number: 9206842
    Abstract: A crossed roller bearing, including: an inner element and an outer element that relatively rotate, the inner element including an annular inner V-groove that is provided along an outer peripheral surface of the inner element and that has a V shape that opens towards the outer element, the outer element including an annular outer V-groove that is provided along an inner peripheral surface of the outer element, that has a V shape that opens towards the inner element, and that faces the inner V-groove; a plurality of cylindrical rolling elements that are placed between the inner V-groove and the outer V-groove, that roll while being in contact with the inner V-groove and the outer V-groove, and adjacent rolling elements of which have rolling axes that are perpendicular to each other; and a retainer that are placed between the adjacent rolling elements that includes a flat section that is a projecting central section on an area which faces either one of the rolling elements and that is capable of contact with the
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: December 8, 2015
    Inventor: Muditha Dassanayake
  • 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: 8931959
    Abstract: The roller bearing comprises an inner ring, an outer ring, at least one row of rolling elements which are arranged between the rings in order to form an axial thrust which can transmit axial forces, and a row of rolling elements arranged between the rings in order to form a radial thrust which can transmit radial forces. The inner ring comprises an annular groove which extends towards the interior from an outer surface of the ring, and forms a raceway for the rolling elements of the radial thrust.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: January 13, 2015
    Assignee: Aktiebolaget SK
    Inventors: Jean-Baptiste Noirot, Cyril Bouron, Bruno Capoldi, Jean-Baptiste Magny, Pascal Ovize
  • Patent number: 8858088
    Abstract: In a tapered roller bearing assembly, a crowning profile formed portion of the roller rolling surface is made up of a contact area crowned portion, which is held in contact with an inner ring raceway surface, and a non-contact area crowned portion which is held in non-contact with the inner ring raceway surface. The contact area crowned portion and the non-contact area crowned portion have their generatrices extending in an axial direction of a roller, which generatrices are represented by corresponding continuous lines represented by different functions and continued smoothly at a point of connection, and the curvature of the generatrix of the non-contact area crowned portion in the vicinity of the connection point is chosen to be smaller than the curvature of the generatrix of the contact area crowned portion.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: October 14, 2014
    Assignee: NTN Corporation
    Inventor: Hiroki Fujiwara
  • Publication number: 20140219589
    Abstract: A roller assembly for a turret, a turret bearing system for a turret, and a method of manufacture of a roller assembly for a turret. The roller assembly comprises a first and a second roller; an axle on which the first and the second rollers are rotatably mounted; and a biasing mechanism located between the first and the second rollers and supporting the axle.
    Type: Application
    Filed: May 22, 2012
    Publication date: August 7, 2014
    Applicant: Promor PTE LTD
    Inventor: Alan Gregory Hooper
  • Patent number: 8764300
    Abstract: A wind turbine rotor hub bearing where the series of mobile members include more than two annular series of such members whereof at least two have different median diameters which are arranged in more than two rows scaled along the bearing rotational axis, with two end rows each comprising a series of roller bearings having individually a rotational axis transversal to the axis and at least an intermediary row of mobile members comprising balls.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: July 1, 2014
    Assignee: Defontaine
    Inventors: Germain Errard, Eric Jacquemont, Jean-Michel Delacou
  • Patent number: 8727632
    Abstract: A bearing support cage includes: an annular forward ring; an annular aft ring; an annular mounting flange disposed between the forward and aft rings; an annular array of axially-extending first spring fingers interconnecting the forward ring and the aft ring; and an annular array of axially-extending second spring fingers interconnecting the mounting flange and the aft ring, wherein the first spring fingers are interdigitated with the second spring fingers. The forward and aft rings, the mounting flange, and the spring fingers are all part of a single monolithic component.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: May 20, 2014
    Assignee: General Electric Company
    Inventors: Kevin Michael Do, Benjamin Johannes Seppala, David Garry Kerry, Alper Uyar, Ali Isler
  • Publication number: 20140072255
    Abstract: A rotational assembly includes a mating surface and an interlocking surface disposed in driving engagement with a cooperable interlocking member of a driving mechanism. A plurality of receptors is defined in the mating surface. A bearing element is received in each of the plurality of receptors for reducing frictional interaction between the mating surface of the rotational assembly and a complementary mating surface of an interacting component. A retainer is defined in the mating surface at each of the receptors providing rotational retention of each of the bearing elements within its corresponding receptor.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 13, 2014
    Applicants: Value Extraction LLC, Szuba Consulting, Inc.
    Inventor: Joseph Szuba
  • Publication number: 20140050428
    Abstract: A turret/vessel bearing arrangement and method for replacing bearings in situ without removing other bearings. The bearings are capable of being separated. A removable axial spacer secures the vessel and the turret into engagement with the upper and lower thrust bearings. Removal of the spacer allows increased separation between vessel and turret flanges that sandwich the thrust bearings. The mid radial bearing assembly includes one or more radially arranged bearing pads that allow for limited axial displacement of the turret with respect to the vessel during thrust bearing replacement while still bearing radial loads and allowing rotation. The addition of a temporary thrust bearing allows the vessel to weathervane about the turret while thrust bearing are replaced in situ.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 20, 2014
    Inventors: STEPHEN P. LINDBLADE, WILLIAM LOUIS FONTENOT, JAMES NELSON PRATT
  • Patent number: 8608444
    Abstract: A single-bearing structure, in particular for use in a wind power plant, which has a low friction operating characteristic. The single-bearing structure for mounting a rotor in the wind power plant has two first rows of rolling bodies, which are arranged in the single-bearing structure such that their pressure lines intersect with one another and with a radial plane of a rotation axis of the single-bearing structure. The rolling bodies of the two first rows of rolling bodies are designed as cylindrical rollers.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: December 17, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Rudolf Zeidlhack
  • Publication number: 20130322805
    Abstract: A bearing ring for a roller bearing includes a raceway for at least one roller that includes an at least partially spherically formed roller end surface having a first curvature. A flange for transferring axial forces extends from an end of the raceway and has a flange surface that faces towards the roller end surface. A spherical flange surface section having a second curvature is defined on the flange surface. The first curvature differs from the second curvature such that a first gap (d1) exists between the spherically formed roller end surface and the spherical flange surface section. The flange surface also includes an opening flange surface section having a third curvature, which is less than the second curvature, such that a second gap (d2) exists between the roller end side and the opening flange surface section. The second gap is larger than the first gap.
    Type: Application
    Filed: November 28, 2011
    Publication date: December 5, 2013
    Inventors: Baozhu Liang, Michael Reugels
  • Patent number: 8579511
    Abstract: A loading hole made in either of an outer ring and an inner ring is provided in two rows of raceways defined between the outer ring and the inner ring, one to each raceway. The loading hole is set out of the guide surface and, therefore there is no fear that a closure fitted in the loading hole causes any obstacle to the rolling movement of the rollers. The loading hole extends radially of the bearing at a location that a center line of the loading hole lies set-off or biased from a center of the roller. An opening edge of the loading hole is exposed to the raceway in a location out of the guide surface, so that the rollers are allowed to roll smoothly without touching with the innermost edge of the closure.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: November 12, 2013
    Assignee: Nippon Thompson Co., Ltd.
    Inventor: Shunsuke Kikuchi
  • Patent number: 8573849
    Abstract: A bearing arrangement having at least two parts (10, 12) rotatable relative to one another, in which one (10) of the parts has at least one annular groove (14) concentric with the axis of rotation (A), and the other part (12) has a tongue (16) that is complementary to the groove (14) and engaged therein, and in that each of the parts (10, 12) is divided into at least two sectors (10a; 12a) along separating faces that pass through the groove (14) and the tongue (16), the tongue (16) extending over all sectors (12a, 12b) of the corresponding part (12).
    Type: Grant
    Filed: March 26, 2011
    Date of Patent: November 5, 2013
    Inventor: Ulrich Leiseder
  • Patent number: 8573852
    Abstract: A heavy earth-moving machine having a lower structure and an upper structure rotatably supported by the lower structure for rotation about an axis. A substantially circular lower rail is mounted on the lower structure and includes an inclined lower surface. A substantially circular upper rail is mounted on the upper structure and includes a substantially planar upper surface that is oriented substantially perpendicular to the axis. Tapered rollers support the upper rail above the lower rail for rotation of the upper rail about the axis. Each roller engages both the upper surface and the lower surface and defines and rotates about a roller axis that intersects the axis at a non-perpendicular angle.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 5, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventor: Jason Knuth
  • Patent number: 8523453
    Abstract: An axial radial bearing for a rotor shaft of a wind power installation, which has a vertical circular outer disk, inner ring arranged coaxially to the outer disk, and two circular shaft washers axially arranged on both sides of the outer disk. At least one row of rolling bodies, held at equal distances by a bearing cage, extends between the shaft washers and outer disk, forming the rolling bearings for receiving axial forces, while at least one other row of rolling bodies, optionally held at equal distances by another bearing cage, is arranged between the outer disk and inner ring, forming a third rolling bearing for receiving radial forces. The two rolling bearings for receiving radial forces are formed by two tapered roller bearings oriented towards the longitudinal axis of the bearing by the small front sides, or by a double-row angular ball bearing or by two axial ball bearings.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 3, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Tim Loeschner, Rudolf Zeidlhack
  • Publication number: 20130223786
    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: Application
    Filed: July 11, 2011
    Publication date: August 29, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Wolfgang Fugel, Andreas Kirschner, Alexander Reimchen, Martin Gegner
  • Patent number: 8469599
    Abstract: A rolling bearing which has at least one bearing ring and a plurality of rollers. The bearing ring has a raceway for the rollers and at least one lateral rim for axially guiding the rollers. The roller has a front face facing the rim and the rim has a rim bearing surface facing the roller. At least sections of at least the front face or the rim bearing surface are cambered in the direction of the rim bearing surface or the front face. The camber has a logarithmic profile of camber in at least one border section.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: June 25, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Jan De Mul
  • Patent number: 8371760
    Abstract: A rolling bearing, particularly a slewing connection (1), comprising an outer bearing ring (2) and an inner bearing ring (3) and rolling elements arranged between said outer and inner bearing rings for rolling contact with associated raceways, a stop means for limiting an angle of rotation of the rolling bearing being arranged within the rolling bearing, whereby a first solution offered by the invention, the outer bearing ring (2) comprises on an inner peripheral surface a recess (14) which extends in peripheral direction and is limited at two ends by a first stop lug (15), the inner bearing ring (3) comprises on an outer peripheral surface a guide groove (16) which extends in peripheral direction and is limited at two ends by a second stop lug (17), and a guide element (18) arranged in the guide groove (16) connects the inner and outer bearing rings (3,2) to each other by positive engagement.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: February 12, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Jürgen Stölzle
  • Publication number: 20120243819
    Abstract: A wind turbine rotor hub bearing where the series of mobile members include more than two annular series of such members whereof at least two have different median diameters which are arranged in more than two rows scaled along the bearing rotational axis, with two end rows each comprising a series of roller bearings having individually a rotational axis transversal to the axis and at least an intermediary row of mobile members comprising balls.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: DEFONTAINE
    Inventors: Germain Errard, Eric Jacquemont, Jean-Michel Delacou
  • Patent number: 8182157
    Abstract: A thrust bearing assembly generally includes a cage and a plurality of rolling elements. The cage has first and second cage halves with each cage half having a respective radial segment with a plurality of circumferentially spaced openings. Each opening has an opening perimeter. The cage halves are interconnected with portions of the radial segments circumferentially between the plurality of openings abutting along a given plane and the respective openings aligned to defined rolling element pockets. The rolling elements are positioned in the rolling element pockets such that a centerline of each rolling element lies in or in proximity to the given plane. A flange extends along at least a portion of each opening perimeter to retain the rolling elements within a respective one of the rolling element pockets.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 22, 2012
    Assignee: Koyo Bearings USA LLC
    Inventors: Charles W. Shattuck, David R. Torlai, Richard F. Murphy
  • Publication number: 20120121215
    Abstract: A roller circle assembly for heavy machinery includes an upper circular rail and a lower circular rail concentrically arranged about a central axis, and tapered rollers between the upper and lower rail. Each tapered roller includes a flange having an angled and convex flange contact surface that contacts the lower rail. The lower rail and/or the upper rail can include an angled surface configured for contact with the flange contact surface. The geometry of the rollers and the lower rail are configured to reduce the stresses applied to the rollers and lower rail due to contact between the flange contact surface and the angled surface.
    Type: Application
    Filed: February 17, 2011
    Publication date: May 17, 2012
    Inventor: Jason Knuth
  • Patent number: 8123413
    Abstract: A surface textured roller and a surface textured rolling element bearing comprising a plurality of micropores in a surface thereof is presented. The plurality of micropores may have a geometry selected from a hemisphere, a diamond shape, an ellipsoid, and a cone. The surface textured rollers may be used, for example, in a gear box and/or a wind turbine drivetrain.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: February 28, 2012
    Assignee: General Electric Company
    Inventors: Nikhil Subhashchandra Tambe, Munishwar Ahuja, Hombe Gowda
  • Patent number: 8033737
    Abstract: A rolling bearing which has at least one bearing ring and a plurality of rollers. The bearing ring has a raceway for the rollers and at least one lateral rim for axially guiding the rollers. The roller has front face facing the rim and the rim has a rim hearing surface facing the roller. At least sections of at least the front face or the rim bearing surface have a toroidal camber in the direction of the rim bearing surface or the front face.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: October 11, 2011
    Assignee: Schaeffler KG
    Inventor: Jan De Mul
  • Patent number: 7976687
    Abstract: Provided is a roll unit to be dipped in a surface treatment liquid of a copper foil, wherein a bearing box for housing a roil shaft is configured from two bearing boxes that are divisible, one of the bearing boxes is configured from a roll-side bearing box arranged on a roll main body-side and the other bearing box is configured from a shaft end-side bearing box arranged on the shaft end-side of the roll, a shaft sleeve covering an outer periphery of the roll shaft is provided in the roll-side bearing box and an oil seal is provided along an outer periphery of the shaft sleeve, and a bearing for rotatably supporting the shaft is disposed in the shaft end-side bearing box.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: July 12, 2011
    Assignee: JX Nippon Mining & Metals Corporation
    Inventor: Haruo Sato
  • Patent number: 7845857
    Abstract: A thrust bearing assembly generally includes a cage and a plurality of rolling elements. The cage has first and second cage halves with each cage half having a respective radial segment with a plurality of circumferentially spaced openings. Each opening has an opening perimeter. The cage halves are interconnected with portions of the radial segments circumferentially between the plurality of openings abutting along a given plane and the respective openings aligned to defined rolling element pockets. The rolling elements are positioned in the rolling element pockets such that a centerline of each rolling element lies in or in proximity to the given plane. A flange extends along at least a portion of each opening perimeter to retain the rolling elements within a respective one of the rolling element pockets.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: December 7, 2010
    Assignee: Koyo Bearings USA LLC
    Inventors: Charles W. Shattuck, David R. Torlai, Richard F. Murphy
  • Patent number: 7819589
    Abstract: A radial roller bearing, which is a single-grooved ball bearing. The bearing bodies are spherical disks with two symmetrical, parallel lateral surfaces from a spherical base shape. The bearing has a larger contact surface of the spherical disk in relation to the bearing body tracks thereof, as well as, an increased number of bearing bodies. One part of the width of the disks, between the lateral surfaces thereof, is larger than the distance between the inner side of the external bearing ring and the external side of the inner bearing ring, but equal to or smaller than the width of the bearing body tracks. Also, the use of the disks in the bearing takes place according to an eccentric mounting method where the disks are arranged in a transversal manner in the bearing body tracks and are arranged on top of each other in relation to the lateral surfaces thereof.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: October 26, 2010
    Assignee: Schaeffler KG
    Inventors: Heinrich Hofmann, Horst Doeppling, Robert Plank
  • Publication number: 20100260451
    Abstract: A thrust bearing having improved rolling pins and/or leveling plates that reduce wear and/or the size of the thrust bearing. In one aspect, the rolling pins have a substantially smaller radius of curvature than the surfaces of the lower leveling plates in which they nest. In another aspect, a leveling plate is used that has a substantially planar surface that contacts the rolling pins. In still another aspect, the rolling pins have a transverse cross-section having non-uniform radius of curvature. In yet another embodiment, the rolling pins have a transverse cross-section having a minor axis and a major axis.
    Type: Application
    Filed: April 14, 2009
    Publication date: October 14, 2010
    Inventor: Joseph J. Wilkes
  • Patent number: 7736066
    Abstract: A diameter dimension of a chamfer 11 which is formed on axial end faces of a cylindrical roller 8 which is retained in each pocket 7 of a cage 2 whose axial positioning is realized by a roller guide at a portion which lies closer to an outside diameter side thereof is made such that a central flat surface 9 which lies on an inside diameter side of the chamfer 11 is not exposed from an external surface of an outside diameter side flat plate portion 14. Then, a difference between a minimum value ?B of an amount by which the cylindrical roller 8 projects from the external surface of the outside diameter side flat plate portion 14 and a dimension W11 of the chamfer 11 with respect to a diameter direction thereof is made smaller than a thickness T2 of the cage 2.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: June 15, 2010
    Assignee: NSK Ltd.
    Inventors: Jun Liu, Ryosuke Yamada, Kouji Kobayashi, Azusa Otani
  • 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
  • Patent number: 7708468
    Abstract: A bearing arrangement for absorbing axial loads, which has a plurality of axial roller bearings arranged one behind the other and each having a housing plate, a shaft plate, and rolling body sets arranged between the runner plates. In each case, the shaft plates and the housing plates are supported axially by spacer rings arranged between them. The housing plates and the shaft plates have a constant axial thickness over their entire radial extent in the region of the rolling body sets, and at least one of the shaft plates has an annular clearance at its inner circumference which is inwardly open in the radial direction.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: May 4, 2010
    Assignee: Schaeffler KG
    Inventors: Gabriel Dambaugh, Jim Ingerslew
  • Publication number: 20090169145
    Abstract: A full crowning provided on an outer diameter surface (13) of a roller (11) includes a first crowning (14a), a second crowning (14b), and a third crowning (14c). When a length of the roller (11) in its rolling axial direction is twice a length of the roller (11) in its radial direction and less, a curvature radius R1 of the first crowning (14a) positioned at a distance of 32% of the length of the roller (11) in the rolling axial direction from an end face (12a) of the roller (11) is R551 to R1000, a curvature radius R2 of the second crowning (14b) positioned at a distance of 23% of the length of the roller in the rolling axial direction from the end face (12a) of the roller (11) is R321 to R550, and a curvature radius R3 of the third crowning 14c positioned at a distance of 15% of the length of the roller in the rolling axial direction from the end face (12a) of the roller 11 is R200 to R320.
    Type: Application
    Filed: May 16, 2007
    Publication date: July 2, 2009
    Inventors: Kousuke Obayashi, Kazuyuki Yamamoto
  • 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
  • Publication number: 20080310788
    Abstract: The invention relates to a rolling bearing comprising at least one bearing ring and a plurality of rollers, the bearing ring having a raceway for the rollers and at least one lateral rim for axially guiding the rollers. The roller has front face facing the rim and the rim has a rim bearing surface facing the roller. At least sections of at least the front face or the rim bearing surface have a toroidal camber in the direction of the rim bearing surface or the front face.
    Type: Application
    Filed: December 8, 2006
    Publication date: December 18, 2008
    Applicant: SCHAEFFLER KG
    Inventor: Jan De Mul
  • Patent number: 7334493
    Abstract: A device for the reduction of axial movement of the main shaft gears (2) in a transmission containing at least two countershafts. The main shaft gears (2) are held axially by two washer discs (3, 4) which is designed to be a pressing device (5, 6) on the main shaft (1) for at least one of the main shaft gears (2) against the washer disc (3) holding the main shaft gear (2) axially.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: February 26, 2008
    Assignee: ZF Friedrichshafen AG
    Inventor: Stefan Renner
  • Patent number: 7273318
    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: Grant
    Filed: July 1, 2003
    Date of Patent: September 25, 2007
    Assignee: NTN Corporation
    Inventors: Tetsuya Hayashi, Kousuke Obayashi, Shinji Oishi
  • Patent number: 7273319
    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: Grant
    Filed: October 25, 2004
    Date of Patent: September 25, 2007
    Assignee: NTN Corporation
    Inventors: Kenji Tamada, Kikuo Maeda, Tomoaki Kawamura, Hirokazu Nakashima, Takumi Fujita, Mitsuo Sasabe
  • Patent number: 7112040
    Abstract: A guide device for guiding a variable-pitch blade, in particular in a turbomachine compressor, the blade having a pivot formed by a cylindrical axial shank mounted in a cylindrical housing of a casing and pivotally guided about an axis in said housing by bearings, where the bearings are abutment bearings with conical rollers, the axes of the rollers being substantially perpendicular to the pivot axis of the blade.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: September 26, 2006
    Assignee: Snecma Moteurs
    Inventors: Pierre Debeneix, Alain Bromann, Francois Buffenoir
  • Patent number: 7055826
    Abstract: A seal and bearing assembly for use in rotating machinery of the type having a rotor which turns within a stationary housing. The rotor and housing define a seal cavity therein in which the seal and bearing assembly is positioned. The assembly comprises a first bearing race adapted for engagement with a rotating surface on the rotor or a stationary surface, a second race adapted for engagement with the other of the rotating or stationary surfaces, and a plurality of bearing elements disposed between the first and second races. A bearing cage may be used which defines a plurality of bearing openings therein disposed between the first and second races, wherein the bearing elements are disposed in the bearing openings. Preferably, the bearing elements are rollers.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: June 6, 2006
    Assignee: Dunrite Manufacturing Co., Inc.
    Inventor: Lands J. Stewart, Jr.
  • Patent number: 7033083
    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: November 5, 2003
    Date of Patent: April 25, 2006
    Assignee: NTN Corporation
    Inventors: Kousuke Obayashi, Tetsuya Hayashi, Shinji Oishi
  • Patent number: 6923577
    Abstract: A scroll thrust bearing having both-end conical rollers are rolling elements, being low in cost, high in precision, large in load capacity, and excellent in durability. A plurality of both-end conical rollers are held rotatably between a pair of bearing plates, and the relation of the scroll swirl radius (R) of both-end conical roller and the dimension (H) between opposite tracks of the both bearing plates is set in a range of 1<H/R<5. As compared with the preset scroll swirl radius (R) of both-end conical roller, the section curvature in the contact portion with the tracks of the both bearing plates of the conical surfaces of the both-end conical roller is kept as small as possible in a practical range, so that the surface pressure acting on the conical surfaces of the both-end conical roller is kept as small as possible.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: August 2, 2005
    Assignee: Koyo Machine Industries Co., Ltd.
    Inventors: Tomoya Nishibata, Hideaki Ito, Yutaka Morimoto
  • Patent number: 6857787
    Abstract: An axial bearing includes three running disks disposed in neighboring disposition, thereby defining two outer running disks and a middle running disk between the outer running disks. A first rim of rolling bodies is arranged between one outer running disk and the middle running disk, and a second rim of rolling bodies is arranged between the other outer running disk and the middle running disk. Received in a bore of the first and second rims and supporting the first and second rims of rolling bodies is a sleeve which is securely fixed to a shaft extends in axial direction beyond the outer running disks. The sleeve has one end formed with a radially outwardly directed flange which embraces the adjacent one of the outer running disks, wherein the other outer running disk is securely connected to the sleeve to thereby form a unitary bearing structure.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: February 22, 2005
    Assignee: Ina-Schaeffler KG
    Inventors: Peter Meier, Jürgen Oetjen
  • Patent number: 6843605
    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: Grant
    Filed: September 20, 2002
    Date of Patent: January 18, 2005
    Assignee: NTN Corporation
    Inventors: Kenji Tamada, Kikuo Maeda, Tomoaki Kawamura, Hirokazu Nakashima, Takumi Fujita, Mitsuo Sasabe