Race Structure Patents (Class 384/622)
  • Patent number: 11319989
    Abstract: A rolling bearing provides an inner ring and an outer ring concentrically about a rotation axis X-X? running in an axial direction, and at least first and second axial bearings each axially disposed between the inner ring and the outer ring and each having at least one row of rolling elements, the first and second axial bearings being spaced apart from each other in the axial direction. The rolling bearing further provides only one radial bearing radially disposed between the inner ring and the outer ring and having at least one row of rolling elements. The radial bearing is disposed between an outer raceway located on the inner ring and an inner raceway located on the outer ring.
    Type: Grant
    Filed: March 27, 2021
    Date of Patent: May 3, 2022
    Assignee: Aktiebolaget SKF
    Inventor: Damien Barciet
  • Patent number: 11053976
    Abstract: A double-row cylindrical roller bearing employs a cross roller bearing for one cylindrical roller bearing and a parallel cylindrical roller bearing for the other cylindrical roller bearing. The relative positions of a first cylindrical roller on the cross roller bearing part side and a second cylindrical roller on the parallel cylindrical roller bearing part side are not restricted in the direction of the bearing center axis lines thereof. As a result, a bearing having high rigidity and being easy to process and assemble can be achieved at low cost. Increase in friction torque in bearing sliding sections and fluctuation in bearing properties can also be suppressed.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: July 6, 2021
    Assignee: Harmonic Drive Systems Inc.
    Inventors: Tsuguhisa Hagiwara, Yoshiji Nakazawa, Kazuhisa Taguchi, Kazuhiko Kurashina
  • Patent number: 10683890
    Abstract: A roller bearing having a rotatable first ring and a non-rotatable second ring arranged concentrically, the second ring having a circumferential groove opening towards the first ring into which is arranged a protruding element, between which are arranged a single first radial roller bearing and two axial roller bearings spaced apart in the axial direction respectively on opposite radial faces of the protruding element. The roller bearing includes a plurality of circumferentially spaced apart second radial roller bearings secured to the rotatable first ring.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: June 16, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Damien Barciet
  • Patent number: 9784308
    Abstract: A rolling bearing, in particular a center-free large rolling bearing, having two concentric ball races with one ball race comprising a groove open toward the other ball race and the other ball race comprising a scraper ring engaging into the groove, wherein the scraper ring is supported at the groove in the axial direction of the rolling bearing by at least two axial bearings arranged at oppositely disposed scraper ring front sides and wherein the scraper ring is supported in the radial direction by at least one radial bearing which is arranged on a scraper ring jacket surface. The scraper ring is supported in the axial direction at the groove by a third axial bearing, wherein two axial bearings are arranged at the same side of the scraper ring at separate raceways offset from one another in the axial direction of the rolling bearing.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: October 10, 2017
    Assignee: Liebherr-Components Biberach GmbH
    Inventors: Thomas Fiesel, Herbert Sauter
  • Patent number: 9011018
    Abstract: A roller bearing of the type having a flange on which thrust loads are received shows improved ability to form an oil film at the contact surface portions of the end surface of a roller and the flange. The contact surface portions are both inclined at an angle of not less than 0.1° and not more than 1.5° with respect to the radial direction, over the entire circumferences of the respective contact surface portions.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: April 21, 2015
    Assignee: NTN Corporation
    Inventor: Kohei Toda
  • Patent number: 9011015
    Abstract: A rolling bearing unit with decreased weight and improved durability is provided. An outer-ring core, manufactured using a ferrous alloy, forms an outer ring and is molded to an outer-ring main body that is manufactured using a synthetic resin containing reinforced fibers or using an aluminum alloy. Outer-ring raceway members are fitted into and fastened to mating concave surfaces of the inner circumferential surface of the outer-ring core that are exposed from the outer-ring main body. A hub core, manufactured using a ferrous alloy, forms a hub and is molded to a hub main body made using a synthetic resin containing reinforced fibers or using an aluminum alloy. Around the outer circumferential surface of the hub core, inner-ring raceway members are fitted onto and fastened to a fitting surface of the outer circumferential surface of the hub core that is exposed from the hub main body.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: April 21, 2015
    Assignee: NSK Ltd.
    Inventors: Hiroaki Ishikawa, Tatsuo Wakabayashi
  • Patent number: 9004041
    Abstract: A thrust bearing for use in an engine is disclosed. The thrust bearing may have a ring member with a generally planar front face and a generally planar back face. The thrust bearing may also have a plurality of radially-oriented wedge-shaped channels formed in the front face, and a plurality of recesses formed within the back face. Each of the plurality of recesses may be located in general annular alignment with an associated one of the plurality of radially-oriented wedge-shaped channels.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: April 14, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventor: Stephen M. Bednarz
  • Patent number: 8950943
    Abstract: A roller bearing, includes an outer race and an inner race coupled together and rotatable relative to each other, the inner and outer race each defining therein a respective rolling channel, each rolling channel defining two raceway faces abutted at right angles, and rollers accommodated in the rolling channels of the inner and outer races and rotatably kept in contact with the raceway faces of the inner and outer races. The roller bearing is characterized in that the inner and outer races each define a groove between the respective two raceway faces thereof; the ratio between the width of each raceway face and the diameter of each roller is ?0.45 and ?0.62, thus, the friction resistance between the rollers and the raceway faces is minimized, and therefore, the roller bearing does not wear easily when rotated at a high speed.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: February 10, 2015
    Assignee: Hiwin Technologies Corp.
    Inventor: Chang-Hsin Kuo
  • Patent number: 8939652
    Abstract: In an embodiment, a roller bearing apparatus may include a rotor having first superhard raceway elements distributed circumferentially about an axis. Each first superhard raceway element includes a raceway surface positioned/configured to form a first portion of a raceway. The apparatus includes a stator including second superhard raceway elements generally opposed to the first superhard raceway elements. Each second superhard raceway element includes a raceway surface positioned/configured to form a second portion of the raceway. The apparatus includes rolling elements interposed between the rotor and stator and positioned and configured to roll on the raceway. One or more of the rolling elements may be configured to elastically deform on the raceway during use. At least a portion of the raceway exhibits a first modulus of elasticity greater than a second modulus of elasticity of at least a portion of the one or more of the rolling elements.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: January 27, 2015
    Assignee: US Synthetic Corporation
    Inventors: S. Barrett Peterson, Craig H Cooley, David P Miess
  • Publication number: 20150016765
    Abstract: A method for manufacturing a component from steel, which comprises the step of flash butt welding the component. The steel has a reduction ratio of greater than 5:1.
    Type: Application
    Filed: November 26, 2012
    Publication date: January 15, 2015
    Inventors: Patrik Dahlman, Viktor Recina
  • Publication number: 20140341495
    Abstract: A suspension thrust bearing including at least one rolling bearing forming an axial thrust bearing disposed on a lower cap is provided. The lower cap includes a body with an annular rolling bearing portion for a spring and a tubular portion including a bore in which a shock absorber bump stop is inserted. An axial contact surface is defined on the lower portion of the bore of the tubular portion against which the shock absorber bump stop when deformed exerts a radial force. The tubular portion includes a reinforcing insert located at the level of this axial contact surface.
    Type: Application
    Filed: April 2, 2014
    Publication date: November 20, 2014
    Applicant: Aktiebolget SKF
    Inventors: Cedric BROUTY, Sylvain Bussit, Christophe Houdayer, Hemanth Kumar G N, Pascal Quenardelle, Jean-Marc Soudee
  • Patent number: 8876400
    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: Grant
    Filed: February 24, 2010
    Date of Patent: November 4, 2014
    Assignee: NSK Ltd.
    Inventors: Kazuhiko Kanou, Tetsuya Takahashi
  • 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: 20140301692
    Abstract: A bearing assembly is disclosed which addresses the problem of axially retaining a bearing journaled onto a shaft within a casing in an axially compact and technically economic and reliable way by first mounting a retaining plate (6) onto an outer race of the bearing (1). The mounting can be achieved by press fining onto a shoulder so that the retaining plate can rotate relative to the outer race. The bearing is then journaled onto a shaft (4) and inserted into a compact casing (3) so that the outer race is guided into a housing (2) formed in an end wall of the casing (3). The retaining plate can then be rotated as required to align fastening bosses (7) with holes (8) to be engaged by screws (9) so that the retaining plate us urged axially against the outer race.
    Type: Application
    Filed: June 23, 2014
    Publication date: October 9, 2014
    Inventor: Richard W. FISK
  • Publication number: 20140169718
    Abstract: In an embodiment, a roller bearing apparatus may include a rotor having first superhard raceway elements distributed circumferentially about an axis. Each first superhard raceway element includes a raceway surface positioned/configured to form a first portion of a raceway. The apparatus includes a stator including second superhard raceway elements generally opposed to the first superhard raceway elements. Each second superhard raceway element includes a raceway surface positioned/configured to form a second portion of the raceway. The apparatus includes rolling elements interposed between the rotor and stator and positioned and configured to roll on the raceway. One or more of the rolling elements may be configured to elastically deform on the raceway during use. At least a portion of the raceway exhibits a first modulus of elasticity greater than a second modulus of elasticity of at least a portion of the one or more of the rolling elements.
    Type: Application
    Filed: December 13, 2012
    Publication date: June 19, 2014
    Applicant: US SYNTHETIC CORPORATION
    Inventor: US SYNTHETIC CORPORATION
  • 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
  • Patent number: 8702178
    Abstract: The invention provides a trolley wheel assembly for a conveyor system, e.g., an overhead conveyor system. In certain embodiments, the wheel assembly includes at least one wheel face having a contour (optionally a funneling configuration and/or one or more surface features) configured to facilitate flow of a fluid toward an open bearing assembly of the wheel assembly. In some embodiments, the wheel assembly includes an inner race, outer race, and bearings having a particular hardness arrangement, optionally together with a polymer wheel having certain filler features. Methods for cleaning such a trolley wheel assembly are also provided.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: April 22, 2014
    Assignee: Oconomowoc Mfg. Corp.
    Inventors: Scott T. Breyer, Kyle C. Stoehr
  • Publication number: 20140072256
    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: Application
    Filed: April 12, 2012
    Publication date: March 13, 2014
    Inventor: Haruki Yamada
  • 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: 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: 8569664
    Abstract: An object of the present invention is to provide a hardening method and a hardening device capable of successfully hardening a shaft and an inner wall of a hole of a work in which the hole is formed close to the shaft on a flat plate. A hardening device for hardening a shaft and an inner wall of a hole, the shaft extending vertically from a flat plate and the hole being formed adjacent to the shaft, includes a first heating coil that is a conductive body facing the shaft and a second heating coil that is a helical conductive body having at least a portion inserted into the hole, so that the first heating coil and the second heating coil heat the shaft and the inner wall of the hole respectively and simultaneously.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: October 29, 2013
    Assignee: Fuji Electronics Industry Co.
    Inventors: Junji Minoue, Hiroko Watanabe, Masayuki Koyama, Hideo Miyashita
  • Publication number: 20130195393
    Abstract: The suspension thrust bearing device for a motor vehicle comprises a rolling bearing 22 forming a thrust bearing and provided with an upper ring, with a lower ring and with at least one row of rolling elements arranged between the rings, a bearing cap 18 in contact with the upper ring, and a support cap 20 in contact with the lower ring and forming a bearing means for a suspension spring 12. At least one of the said caps comprises a body made of synthetic material and an insert 34 covered at least in part by the said body. The insert 34 comprises stiffening ribs 44 in order to reinforce the mechanical strength of the said cap with respect to the axial loads resulting from the forces exerted by the suspension spring.
    Type: Application
    Filed: December 15, 2010
    Publication date: August 1, 2013
    Inventors: Richard Corbett, Christophe Houdayer, Bruno Montboeuf, Samuel Viault
  • 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: 8414195
    Abstract: A thrust bearing assembly having a plurality of rollers positioned in a cage is provided. A first race washer is positioned on a first axial side of the rollers and the cage, with the first race washer including a first axially extending flange axially overlapping the cage and the rollers, and having at least one protrusion extending in a direction away from the cage. A first retention band including a first axially extending band and a first retaining flange that extends radially from the first axially extending band is provided. The first retention band has at least one recess or opening and is complementary in size to the first race washer flange and engagable thereon. Engagement is accomplished via the at least one protrusion on the first axially extending flange engaging the at least one recess or opening in the first retention band. The first retaining flange has a width that is sized to overlap a portion of the cage on a second axial side.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: April 9, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: James Kevin Brown
  • Patent number: 8348515
    Abstract: An axial bearing having an axial angle disk and a cage with rolling bodies. The rolling bodies are supported so that they can roll on a rolling surface of a radial section of the axial angle disk, and the axial angle disk has a securing tab projecting outward in a radial direction and within a plane. The securing tab extends in a radial direction past a nominal diameter of the axial angle disk, and the securing tab is used for a secured mounting and extends in the radial direction past a nominal diameter by less than the sheet thickness (d) of the axial angle disk.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: January 8, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Wolfgang Fugel, Alexander Reimchen
  • Patent number: 8328430
    Abstract: A thrust roller bearing 10 is provided in which one half of total gap which results from adding up an outer diameter side in-bearing gap 22 and an inner diameter side in-bearing gap 23 in diametrical direction is made larger than the amount of eccentricity between a member 51 which supports an outer ring 11 and a member 53 which supports an inner ring 14. When inside diameter at distal end of an outer locking portion 19 along a distal edge portion of an outer flange 13 is ?D1, outside diameter of a cage 18 is ?D2, outside diameter at a distal end of an inner locking portion 20 along a distal edge portion of an inner flange 16 is ?D3, inside diameter of the cage 18 is ?D4 and thickness of the cage 18 is t, A, B are defined as A=(D2?D1)/t and B=(D3?D4)/t, 0.1?A, B?5 is satisfied.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: December 11, 2012
    Assignee: NSK Ltd.
    Inventors: Satoshi Masuda, Hiromichi Takemura
  • Patent number: 8197949
    Abstract: Provided is a blank structure for a ring member of a bearing in which a cut target surface after stainless steel is forged has uniform surface characteristics, and highly accurate cutting processing is enabled. A blank (10), which is processed to an outer race (2) and an inner race (3) of a bearing, includes: a cylindrical portion (11, 12) formed by forging a stainless-steel material, and having an inner circumferential surface (11a, 12a) and an outer circumferential surface (11b, 12b) entirely being surface eutectic carbides fragmented beds; and a clamp portion (13) provided to one end portion side of the cylindrical portion (11, 12).
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: June 12, 2012
    Assignee: Seiko Instruments Inc.
    Inventors: Hironobu Itoh, Hiroaki Matsumura, Kenji Takano
  • Publication number: 20120051682
    Abstract: A bearing part having long life against rolling contact fatigue, excellent in anti-crack strength and restricted in an increase of aged dimensional change, a heat treatment method thereof, and a rolling bearing including the bearing part are obtained. Steel for a bearing part is subjected to carbonitriding at a carbonitriding temperature exceeding the A1 transformation temperature, and cooled to a temperature lower than the A1 transformation temperature. The steel is reheated to a temperature for quenching that is not lower than the A1 transformation temperature but lower than the carbonitriding temperature, and then quenched.
    Type: Application
    Filed: November 8, 2011
    Publication date: March 1, 2012
    Applicant: NTN Corporation
    Inventor: Chikara Ohki
  • Publication number: 20120014635
    Abstract: An outer ring, an inner ring and a ball serving as mechanical components configuring a deep groove ball bearing are formed of steel containing at least 0.77 mass % and not more than 0.85 mass % of carbon, at least 0.01 mass % and not more than 0.25 mass % of silicon, at least 0.01 mass % and not more than 0.35 mass % of manganese, at least 0.01 mass % and not more than 0.15 mass % of nickel, at least 3.75 mass % and not more than 4.25 mass % of chromium, at least 4 mass % and not more than 4.5 mass % of molybdenum and at least 0.9 mass % and not more than 1.1 mass % of vanadium with a remainder consisting of iron and impurity, and have raceway/rolling contact surfaces, the surface being included in a region having a nitrogen enriched layer having a nitrogen concentration of at least 0.05 mass %, the nitrogen enriched layer having a carbon concentration and the nitrogen concentration, in total, of at least 0.82 mass % and not more than 1.9 mass %.
    Type: Application
    Filed: September 21, 2011
    Publication date: January 19, 2012
    Applicant: NTN Corporation
    Inventors: Chikara OHKI, Kazuhiro YAGITA, Takashi ITO, Hiroshi MORISHITA
  • Patent number: 8092094
    Abstract: A rolling bearing slewing connection comprising two race rings arranged concentrically in each other, between which race rings rolling elements roll on associated raceways, one of the race rings having a flexible configuration wherein, as viewed in a longitudinal section, the flexible race ring has a weakened configuration, so that a radial, elastic deformation that is so large that the rolling elements are pre-stressed in the loaded state in the entire peripheral region is possible.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: January 10, 2012
    Assignee: Schaeffler KG
    Inventors: Peter Meier, Frank Neubert, Jürgen Stülzle
  • Publication number: 20110280508
    Abstract: A thrust bearing component is formed of cold-reduced steel sheets and strip having surface roughness of Rmax?2 ?m and provided by cold rolling a high-carbon steel containing 0.9 wt % to 1.2 wt % of carbon, 1.2 wt % to 1.7 wt % of chrome, 0.1 wt % to 0.5 wt % of manganese, and 0.15 wt % to 0.35 wt % of silicon.
    Type: Application
    Filed: August 2, 2011
    Publication date: November 17, 2011
    Applicant: NTN CORPORATION
    Inventors: Tomoaki KAWAMURA, Yasuyuki Watanabe, Kousuke Obayashi
  • Publication number: 20110235953
    Abstract: A bearing has a circular element (12) normally fixed with respect to ground (111). The circular element (12) associated with the ground element is permitted to idle in rotation, so as to distribute wear around the circumference thereof. Various means of controlling and causing idle rotation are disclosed. Rolling elements (113) are preferably provided between inner and outer races (112, 115) of a bearing assembly.
    Type: Application
    Filed: September 24, 2009
    Publication date: September 29, 2011
    Inventor: Jonathan Charles Wheals
  • Patent number: 7993062
    Abstract: A rotating combination thrust plate and thrust shaft flange (10), and a thrust bearing assembly (40) incorporating the rotating flange plate combination (10), in which the rotating flange plate combination (10) has a generally cylindrical body portion (22) which has a rotating base surface (24) and a lateral surface (23), a frustoconical body portion (29) which has a frustoconical surface (28), and a bore (12) extending through the cylindrical and frustoconical body portions (22 and 29) and having a first bore section (14) and a second bore section (16) wherein the second bore section (16) is adjacent the rotating base surface (24) and has a smaller diameter then the first bore section (14). The first and second bore sections meet at a junction (18) defining a lip (21) which is designed to support a complimentary lip (42) of a bore shaft (20) thereby restricting the movement of the bore shaft (20) in the direction of thrust in an extruder.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: August 9, 2011
    Assignee: Davis-Standard, LLC
    Inventor: Ernest W. Plasse
  • Publication number: 20100303400
    Abstract: An apparatus for detecting the load on a rolling bearing which has at least one bearing ring. The apparatus has a transmitter for electromagnetic radiation, and a receiver for the radiation emitted by the transmitter. A space-saving and simple apparatus for detecting the load on the bearing ring of the bearing is achieved, by virtue of the fact that an optical waveguide is provided, into which the transmitter couples the electromagnetic radiation, and by virtue of the fact that the optical waveguide is arranged on a surface of the at least one bearing ring, and by virtue of the fact that the at least one bearing ring is in the region of an evanescent field coming from the optical waveguide. Also, a rolling bearing, which has at least one bearing ring with an apparatus for detecting the load on the at least one bearing ring is disclosed.
    Type: Application
    Filed: October 16, 2008
    Publication date: December 2, 2010
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Carsten Duppe, Martin Kram
  • Publication number: 20100239205
    Abstract: An outer ring, an inner ring and a ball serving as mechanical components configuring a deep groove ball bearing are formed of steel containing at least 0.77 mass % and not more than 0.85 mass % of carbon, at least 0.01 mass % and not more than 0.25 mass % of silicon, at least 0.01 mass % and not more than 0.35 mass % of manganese, at least 0.01 mass % and not more than 0.15 mass % of nickel, at least 3.75 mass % and not more than 4.25 mass % of chromium, at least 4 mass % and not more than 4.5 mass % of molybdenum and at least 0.9 mass % and not more than 1.1 mass % of vanadium with a remainder consisting of iron and impurity, and have raceway/rolling contact surfaces, the surface being included in a region having a nitrogen enriched layer having a nitrogen concentration of at least 0.05 mass %, the nitrogen enriched layer having a carbon concentration and the nitrogen concentration, in total, of at least 0.82 mass % and not more than 1.9 mass %.
    Type: Application
    Filed: November 21, 2008
    Publication date: September 23, 2010
    Inventors: Chikara Ohki, Kazuhiro Yagita, Takashi Ito, Hiroshi Morishita
  • Publication number: 20100157725
    Abstract: In a vessel, such as a flexible bag, a fluid is received and agitated using an internal fluid-agitating element driven by an external motive device and supported by a bearing, such as a roller bearing. The bearing may comprise a thrust bearing having at least one race fabricated of polyvinylidene fluoride and a plurality of associated rollers, preferably comprising a ceramic material, such as silicon nitride. Experiments show beneficial results in terms of particle generation when this particular combination of materials is used in the context of agitating fluids, and benefits as well when different materials are used to form the rollers.
    Type: Application
    Filed: February 21, 2008
    Publication date: June 24, 2010
    Inventors: Alexandre N. Terentiev, Albert Werth, Philip M. Mantey, Sergey Terentyev
  • 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
  • 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: 7677810
    Abstract: Manufactured by quench hardening, a bearing washer for a thrust bearing inexpensive and excellent in durability is used without being subjected to grinding after quenching. In a bearing washer group including a plurality of bearing washers for the thrust bearing, when camber/waviness of each bearing washer constituting the bearing washer group that is randomly extracted is measured, a value obtained by adding a value three times as large as standard deviation of camber/waviness to an average value thereof is at most 40 ?m.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: March 16, 2010
    Assignee: NTN Corporation
    Inventors: Kousuke Obayashi, Yasuyuki Watanabe
  • Publication number: 20090252449
    Abstract: An axial bearing having an axial angle disk and a cage with rolling bodies. The rolling bodies are supported so that they can roll on a rolling surface of a radial section of the axial angle disk, and the axial angle disk has a securing tab projecting outward in a radial direction and within a plane. The securing tab extends in a radial direction past a nominal diameter of the axial angle disk, and the securing tab is used for a secured mounting and extends in the radial direction past a nominal diameter by less than the sheet thickness (d) of the axial angle disk.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 8, 2009
    Applicant: Schaeffler KG
    Inventors: Wolfgang Fugel, Alexander Reimchen
  • Patent number: 7578764
    Abstract: A thrust bearing (16) for transmitting axial thrust forces between at least two gear parts (1, 5) rotating relative to each other in a gear arrangement is provided, with two coaxial, opposing race disks (17, 18) holding a cage (6) with a plurality of roller bodies (7) with radial play. To prevent discharge of lubricant to the greatest possible extent radially from the thrust bearing (16) and accordingly to be able to guarantee a sufficient axial supply of lubricant to the gear arrangement, it is provided that one race disk (17) has a smaller outer diameter than the other race disk (18), that both race disks (17, 18) each have external collars (19, 20) on the radially outer edge that extend axially inwardly, and the external collar (19) of the race disk (17) with the smaller outer diameter is covered axially by the external collar (20) of the race disk (18) with the greater outer diameter, such that an extensive encapsulation of the thrust bearing (16) against lubricant passage is guaranteed.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: August 25, 2009
    Assignee: Schaeffler KG
    Inventors: James Kevin Brown, Eric Clark
  • Patent number: 7572062
    Abstract: A axial tapered roller bearing comprising an upper pressure disk, a lower pressure disk and tapered rollers between the pressure disks which are kept at uniform intervals from one another in the circumferential direction by a disk cage. The inner surface of the one pressure disk is a circulation path running radially obliquely outward for the tapered rollers and a circumferential outer rim which, with its annular surface facing the tapered rollers, is in radial supporting contact with the outer end faces of the tapered rollers, while the inner surface of the other pressure disk is formed as a flat mating circulation path for the tapered rollers. The annular surface of the outer rim of the one pressure disk has a concave curvature, and the outer end faces of the tapered rollers have a convex curvature and both in the vertical and in circumferential directions, a lubricating wedge with a constant geometry is formed which is suitable for hydrodynamic pressure development by a lubricant.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: August 11, 2009
    Assignee: Fag Kugelfischer AG
    Inventors: Diethmar Morawski, Erwin Treu
  • Patent number: 7182521
    Abstract: An axial roller bearing includes two bearing disks placed in plane-parallel relationship to one another. Each bearing disk has a radial section to form a raceway and an axial collar connected to the radial section, wherein the collar of one bearing disk and the collar of the other bearing disk overlap one another. The axial collars are arranged on an inner or outer peripheral edge of the bearing disks and have breaches to define at least one opening of variable size in dependence on a relative rotation of the bearing disks in circumferential direction. A cage is disposed between the bearing disks for accommodating rolling elements.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: February 27, 2007
    Assignee: Ina-Schaeffler KG
    Inventors: Leo Müntnich, Wolfgang Fugel, Alexander Reimchen
  • Patent number: 7073951
    Abstract: A thrust bearing assembly comprising first and second thrust race members (52, 60) and a roller assembly (22) positioned therebetween. The first thrust race member (52) includes a radial race surface (53), a flange extending from the race surface and a radial lip (54) extending radially beyond the flange (56). The second thrust race member (60) includes a radial race surface (61) and a piloting flange extending from the race surface and includes a retaining lip (64). The second thrust member (60) is positioned within the first thrust member (52) radial lip (54) and retained thereby and there is a clearance between the retaining lip (54) and the first thrust race member flange (56) external surface.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: July 11, 2006
    Assignee: Timken US Corporation
    Inventors: Edward C. Axler, Edward P. Butler, III
  • Patent number: 6722787
    Abstract: A thrust ring, in particular an axial bearing thrust ring, for forming a running surface for rolling elements, for use in bearing systems for universal joints of cardan shafts. The ring has a first planar end side and a second end side, having two surface regions on the second end side which have been machined symmetrically with respect to a first axis of symmetry SD of the thrust ring, and also in terms of its profile in the circumferential direction as seen starting from the first axis of symmetry, in the circumferential direction, to a further, second axis of symmetry SSD which runs at right angles to the first axis of symmetry SD.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: April 20, 2004
    Assignee: Voith Turbo GmbH & Co. KG
    Inventors: Hans Lindenthal, Hans Rösle, Peter Grawenhof
  • Patent number: 6716105
    Abstract: A thrust ring, in particular an axial bearing thrust ring, for forming a running surface for rolling elements, for use in bearing systems for universal joints of cardan shafts. The ring has a first planar end side and a second end side, having two surface regions on the second end side which have been machined symmetrically with respect to a first axis of symmetry SD of the thrust ring, and also in terms of its profile in the circumferential direction as seen starting from the first axis of symmetry, in the circumferential direction, to a further, second axis of symmetry SSD which runs at right angles to the first axis of symmetry SD.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: April 6, 2004
    Assignee: Voith Turbo GmbH & Co. KG
    Inventors: Hans Lindenthal, Hans Rösle, Peter Grawenhof
  • Publication number: 20030103707
    Abstract: The invention relates to a thrust ring, in particular an axial bearing thrust ring, for forming a running surface for rolling elements, for use in bearing systems for universal joints of cardan shafts. The ring has a first planar end side and a second end side, having two surface regions on the second end side which have been machined symmetrically with respect to a first axis of symmetry SD of the thrust ring, and also in terms of its profile in the circumferential direction as seen starting from the first axis of symmetry, in the circumferential direction, to a further, second axis of symmetry SSD which runs at right angles to the first axis of symmetry SD.
    Type: Application
    Filed: November 12, 2002
    Publication date: June 5, 2003
    Applicant: Voith Turbo GmbH & Co. KG
    Inventors: Hans Lindenthal, Hans Rosle, Peter Grawenhof
  • Publication number: 20030035604
    Abstract: A thrust washer formed from metal sheet has a flat, ring-shaped thrust portion oriented radially, and at least one tab extending from an outer or inner perimeter of the thrust portion. The tab includes a radially oriented midportion and at least one wing-portion extending perpendicular to the mid-portion and parallel to the axis of the thrust portion such that a flat surface of the wingportion can engage a recess of a backup member to prevent rotation of the thrust washer relative to the backup member. The tab is not symmetrical about a line along a diameter of the thrust portion.
    Type: Application
    Filed: August 14, 2001
    Publication date: February 20, 2003
    Inventor: Russell B. Gottlieb
  • 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: RE40313
    Abstract: A thrust bearing assembly comprising first and second thrust race members (52, 60) and a roller assembly (22) positioned therebetween. The first thrust race member (52) includes a radial race surface (53), a flange extending from the race surface and a radial lip (54) extending radially beyond the flange (56). The second thrust race member (60) includes a radial race surface (61) and a piloting flange extending from the race surface and includes a retaining lip (64). The second thrust member (60) is positioned within the first thrust member (52) radial lip (54) and retained thereby and there is a clearance between the retaining lip (54) and the first thrust race member flange (56) external surface.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: May 13, 2008
    Assignee: Timken US Corporation
    Inventors: Edward C. Axler, Edward P. Butler III