Ball Or Race Composition Or Material Patents (Class 384/492)
  • Patent number: 11873864
    Abstract: A method for increasing load capacity of a surface-hardened rolling bearing raceway of a rolling bearing ring element may involve providing a rolling bearing ring element with an unhardened core region and, at least in certain portions, an outer layer hardened to a surface hardening depth. A rolling bearing raceway may be formed in a region of the hardened outer layer. The method may further involve hard rolling the rolling bearing raceway with a roll. The diameter of the roll is 8 to 25 times the surface hardening depth. A surface pressure prevailing in a rolling contact between the roll and the rolling bearing raceway during the hard rolling is between 2000 MPa and 3300 MPa. The method further involves machining the rolling bearing raceway after the hard rolling.
    Type: Grant
    Filed: November 26, 2020
    Date of Patent: January 16, 2024
    Assignees: thyssenkrupp rothe erde Germany GmbH, thyssenkrupp AG
    Inventors: Joerg Rollmann, Thomas Handreck, Bernd Lueneburg, Matthias Toefke, Christian Liewen
  • Patent number: 11840960
    Abstract: A gas turbine engine including a compressor that compresses air taken in; a combustor that sprays a fuel into the compressed air and combusts the fuel; a turbine rotated by energy of the combustion gas generated by the combustor; a rotating shaft coupling the compressor and the turbine; a rear bearing that is a cageless ball bearing including an inner race, an outer race, and a ball, the inner race being fixed to a portion of the rotating shaft which portion is close to the turbine; a housing to which the rear bearing is attached; and a rear bearing holding member that is interposed between the rear bearing and the housing and holds the outer race of the rear bearing such that the outer race of the rear bearing is movable in an axial direction relative to the housing.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: December 12, 2023
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Tatsuya Okuwa, Takafumi Fujii, Atsunori Arai, Hayato Hirota, Atsuki Matsuoka
  • Patent number: 11788579
    Abstract: In a raceway surface of at least one of an inner ring and an outer ring, a region not affected by machining is set as a first region, and a region, which has (a) a machining amount of 0.03 or more, (b) an amount of residual austenite being 70% or more of an amount of retained austenite in the first region, and (c) a compressive residual stress being higher by 500 MPa or more than a compressive residual stress in the first region, is set as a second region.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: October 17, 2023
    Assignee: NSK LTD.
    Inventors: Hirofumi Ito, Masahide Natori, Hideyuki Hidaka
  • Patent number: 11767884
    Abstract: A bearing assembly is disclosed herein. The bearing assembly includes an outer bearing ring including at least one first connection element. The assembly also includes a cap defining an axial portion and at least one radial portion defining a cavity configured to receive the outer bearing ring. The cap includes at least one second connection element configured to mate with the at least one first connection element. The cap is formed from an electrically insulating material to prevent EDM.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: September 26, 2023
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Guihui Zhong, Venkata Kottapalli, Michael Heaton, John Tate, Charles Schwab
  • Patent number: 11767880
    Abstract: A bearing includes a plurality of rolling elements (26) spaced around a three-hundred and sixty degree circumferential extent of the bearing. An odd, non-singular number of high-points are positioned as near to evenly as possible about the circumferential extent of the bearing, the high-points defined by locations at which rolling elements with the largest diameters are positioned. An odd, non-singular number of low-points are positioned as near to evenly as possible about the circumferential extent of the bearing, the low-points defined by locations at which rolling elements having the smallest diameters are positioned. The odd, non-singular number of high-points is the same as the odd, non-singular number of low-points, and each low-point is positioned as near to evenly as possible between two adjacent high-points.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: September 26, 2023
    Assignee: The Timken Company
    Inventors: Matthew G. Wilmer, Carl E. Faust
  • Patent number: 11754055
    Abstract: Bearing arrangement of a wind turbine, including a bearing with an outer ring and an inner ring and a lubrication fluid provided between both rings, and at least one sealing means arranged at each side of the bearing for sealing the gap between the outer and the inner ring, whereby each sealing means is fixed to one ring and contacts the other ring with a flexible lip-like sealing element, wherein a pressure device for at least temporarily providing a gas overpressure in the sealed gap for increasing the contact load of the lip-like sealing element to the ring is provided.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: September 12, 2023
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventors: Mathias Muff Hansen, Troels Kildemoes Moeller
  • Patent number: 11619265
    Abstract: A method for manufacturing of a target holder 26 for a sensor bearing unit. The target holder providing at least an axial fixing portion secured to a ring of the sensor bearing unit, and a radial portion extending at least radially with respect to the axial fixing portion, a curved linking portion being formed between the axial fixing portion and the radial portion. The method further providing a step of shot peening at least on the internal surface of the curved linking portion of the target holder.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: April 4, 2023
    Assignee: Aktiebolaget SKF
    Inventors: Olivier Message, Eric Robert
  • Patent number: 11542985
    Abstract: To provide a rolling bearing having a hard film on an inner ring raceway surface and an outer ring raceway surface of the rolling bearing that improves peeling resistance of the hard film, shows the original property of the hard film, and suppresses the attackability to a mating material. A rolling bearing 1 has an inner ring 2 having an inner ring raceway surface 2a on an outer circumference, an outer ring 3 having an outer ring raceway surface 3a on an inner circumference, and rolling elements 4 that roll between the inner ring raceway surface 2a and the outer ring raceway surface 3a. A hard film 8 includes a foundation layer formed directly on the inner ring raceway surface 2a or the outer ring raceway surface 3a and mainly formed of Cr and WC, a mixed layer having a gradient composition formed on the foundation layer and mainly formed of WC and DLC, and a surface layer formed on the mixed layer and mainly formed of DLC.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: January 3, 2023
    Assignee: NTN CORPORATION
    Inventors: Masaki Nakanishi, Hidenobu Mikami
  • Patent number: 11425830
    Abstract: A device mount mounts a display with an aspect ratio greater than or less than 1:1. A camera is integrated into the device mount at a position above a top edge of the display. A hinge of the device mount rotates the mounted display. A mounting plate of the hinge couples the hinge to the device mount, and a shuttle of the hinge couples the display to the hinge to rotate the display between a landscape mode and a portrait mode. The hinge is configured such that rotation of the display from landscape mode into portrait mode translates a center of the display away from the camera on a vertical axis and rotation of the display back to landscape mode translates the center of the display towards the camera on the vertical axis.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: August 23, 2022
    Assignee: Meta Platforms, Inc.
    Inventors: Joshua Davies, Oliver Ross
  • Patent number: 11396207
    Abstract: The present disclosure relates to a wheel hub unit of a motor vehicle and to a method for producing such a wheel hub unit. The wheel hub unit includes a wheel hub and a contact flange firmly connected to the wheel hub. The contact flange includes a plurality of fastening elements for fastening a wheel rim, as well as a contact surface which is intended to come into mechanical contact, at least in part, with a brake hat of a brake disk when the brake disk is in the mounted state. At least part of the contact surface is provided with a thermally insulating coating. Alternatively, the entire contact surface is provided with the thermally insulating coating.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: July 26, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Marc Oliver Rettig, Thomas Wilwers, Clemens Verpoort, Eckhard Voss
  • Patent number: 11371556
    Abstract: Linear bearings assemblies are provided that include polycrystalline diamond bearing surfaces that are engaged with diamond solvent-catalyst bearing. Also provided are methods of making and using linear bearing assemblies.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: June 28, 2022
    Assignee: XR Reserve LLC
    Inventors: Gregory Prevost, William W. King, David P. Miess, Michael R. Reese
  • Patent number: 11371598
    Abstract: A pulley device for a tensioner roller or winding roller of a transmission element, having a pulley, a bearing, and an annular protective flange. The flange provides a first radial portion of small diameter, the first radial portion bearing against a fixed inner ring of the bearing, a second radial portion of large diameter, and a substantially axial intermediate portion connecting the first and second radial portions. The intermediate portion forms a circumferential trough, the bottom of which is offset radially towards the inside of the pulley device compared with the outer edge of the fixed inner ring.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: June 28, 2022
    Inventors: Benoit Arnault, Benoît Hauvespre, Nicolas Tronquoy
  • Patent number: 11326643
    Abstract: A rolling sliding member includes a base part and a surface layer. The base part has a composition that includes 0.30 mass % to 0.45 mass % of carbon, 0.15 mass % to 0.45 mass % of silicon, 0.40 to 1.50 mass % of manganese, 0.60 mass % to 2.00 mass % of chromium, 0.10 mass % to 0.35 mass % of molybdenum, 0.20 mass % to 0.40 mass % of vanadium, and 0.005 mass % to 0.100 mass % of aluminum, and a remainder of iron and inevitable impurities. The surface layer is positioned around the base part. The surface layer has a Vickers hardness of 700 to 800 and a retained austenite content of 25 volume % to 50 volume %. The thickness of a grain boundary oxide layer satisfies Formula: thickness of grain boundary oxide layer?equivalent diameter of rolling sliding member×1.4×10?3.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: May 10, 2022
    Assignees: JTEKT CORPORATION, NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kohei Kanetani, Takashi Sada, Tomohiro Yamashita, Takahisa Suzuki, Yutaka Neishi, Daisuke Hirakami
  • Patent number: 11319009
    Abstract: A method of assembling a vehicle driveline component that includes: positioning a rotary component and first race member on a fixture such that the first race member is concentric with a first race of the component; offsetting the first race member along the rotational axis relative to the first race; providing an annular bearing arrangement having balls and spacers; positioning the arrangement such that the centers of the balls are along a loading cylinder disposed concentrically about the rotational axis; moving the arrangement so the balls seat in the first race and the centers are distributed along an installation circle that is: a) larger in diameter than the loading cylinder if the first race is an outer race of a bearing assembly; or b) smaller in diameter than the loading cylinder if the first race is an inner race of a bearing assembly. A related tooling system is also provided.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: May 3, 2022
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: James R. Derr, Bryan N. Waineo, Tyler D. Jezowski
  • Patent number: 11306810
    Abstract: A pulley device for a tensioner roller or winding roller of a transmission element, having a fixed inner element, a rotating outer element that is mounted to rotate coaxially about the fixed inner element, and an annular protective flange having a substantially radial portion bearing against a front surface of the fixed inner element. The flange includes an annular folded portion extending substantially axially from an outer edge of the flange and passing radially into the immediate vicinity of an axially protruding annular portion of the rotating outer element to form a narrow passage.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: April 19, 2022
    Assignee: Aktiebolaget SKF
    Inventors: Benoit Arnault, Benoît Hauvespre, Nicolas Tronquoy
  • Patent number: 11280373
    Abstract: A rolling element for a roller bearing. The rolling element may include a metal substrate having a surface layer. A portion of the surface layer may include a hardened nitrided layer. A diamond-like carbon (DLC) coating may be bonded directly on at least a portion of the hardened nitrided layer.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: March 22, 2022
    Assignee: Schaeffler Technologies AG & CO. KG
    Inventors: Allen Colynuck, Richard Hesler
  • Patent number: 11215230
    Abstract: A rolling-sliding member that is high in hardness and continues to have a passivation film reliably even after being subjected to a process that does not require any processing for removal of scale etc., as well as a rolling bearing using the same and a method for manufacturing the rolling-sliding member.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: January 4, 2022
    Assignees: JTEKT CORPORATION, DAIDO STEEL CO., LTD.
    Inventors: Nao Inazaki, Fumihiro Furukawa, Kanji Kawasaki, Hisato Nishisaka, Tomoya Hattori, Kazuhisa Kitamura, Yusuke Kusafuka, Keita Hinoshita, Hiroyuki Takabayashi, Kazuhisa Ishida
  • Patent number: 11136808
    Abstract: A vehicle mechanism is provided. The vehicle mechanism may include a stationary member including a main portion provided with an offset surface region including a bearing-surface region having non-planar regions. The mechanism may also include a moveable member that may be configured to move with respect to the stationary member. The moveable member may include a mating-bearing-surface region that may be configured to engage the bearing-surface region of the stationary member. A coating may be provided on the main portion and the bearing-surface region. The coating on the main portion may have a first thickness and the coating on the bearing-surface region may have a second thickness. The second thickness may be least 20% greater than the first thickness.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: October 5, 2021
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Bamberg
    Inventors: Benjamin Hill, Silverio Graham, Hilmar Dohles
  • Patent number: 11137031
    Abstract: A bearing part is composed of a chromium molybdenum steel, and includes a raceway surface or a rolling contact surface. A precipitated compound composed of at least one of a carbide, a nitride, and a carbonitride exist in the raceway surface or the rolling contact surface. An area ratio of the precipitated compound in the raceway surface or the rolling contact surface is more than or equal to 3%. An average grain size of the precipitated compound in the raceway surface or the rolling contact surface is less than or equal to 0.3 ?m.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: October 5, 2021
    Assignee: NTN CORPORATION
    Inventors: Masahiro Yamada, Chikara Ohki
  • Patent number: 11137021
    Abstract: A rolling bearing providing a first ring and a second ring in relative rotation one each other, and at least one row of rolling elements being arranged between the said rings. At least one the rings is made by metal injection molding process including the successive steps of mixing a metal powder with a thermoplastic binder, forming a part by injection of the mixed powder in a closed die, debinding such a formed part in a furnace, sintering to densify the part, and quenching to set a ring hardness, to improve wear resistance and fatigue life.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: October 5, 2021
    Assignee: Aktiebolaget SKF
    Inventors: Samuel Viault, Nicolas Tronquoy
  • Patent number: 11067129
    Abstract: A rolling bearing having an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The rolling bearing is media-lubricated or oil-free lubricated. The lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways. At first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid, preferably an oil-based preservative fluid. Also, a refrigerant compressor having such a rolling bearing.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: July 20, 2021
    Assignee: Aktiebolaget SKF
    Inventors: Hans Wallin, Rudolf Hauleitner, Guillermo Enrique Morales Espejel
  • Patent number: 11045960
    Abstract: Provided is a life evaluating device that evaluates the life of a lubricant in a machine including a motor and a transmission mechanism that is lubricated by the lubricant and transmits power of the motor to a movable unit. The life evaluating device includes a motor-heat-value calculating unit that calculates a motor heat value on the basis of a current value of the motor, a frictional-heat-value calculating unit that calculates a frictional heat value in the transmission mechanism on the basis of rotating speed of the motor and a coefficient of friction of the transmission mechanism, a lubricant-temperature estimating unit that estimates temperature of the lubricant on the basis of the calculated frictional heat value and the calculated motor heat value, and a life estimating unit that estimates the life of the lubricant on the basis of the estimated temperature of the lubricant and information concerning impurities in the lubricant.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: June 29, 2021
    Assignee: FANUC CORPORATION
    Inventors: Wei Guo, Hiroshi Nakagawa
  • Patent number: 11035453
    Abstract: The pulley device for a tensioner roller or an idler roller of a transmission element having a pulley and a bearing. The bearing is provided with a rotating external ring mounted to the pulley, and with a fixed internal ring, a radial space being defined between the rings, with rear sealing means and front sealing means closing the radial space on each axial side, and with at least one row of rotating elements arranged in the radial space. The fixed internal ring is provided on its rear side with a circumferential groove for collecting pollution which is machined on an external surface of the ring, the circumferential groove being offset axially in relation to the rear sealing means outside the radial space.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: June 15, 2021
    Assignee: Aktiebolaget SKF
    Inventors: Nicolas Tronquoy, Benoit Arnault, Benoît Hauvespre, Samuel Viault
  • Patent number: 11028015
    Abstract: A glass ball has a density of 2.3 to 3.2 g/cm3, a Young's modulus of 60 to 150 GPa, and an average coefficient of thermal expansion at 50 to 350° C. being 40×10?7 to 120×10?7/° C. The glass ball is formed of a glass material including, as represented by mole percentage based on oxides, 30 to 75 mol % of SiO2, 2 to 30 mol % of Al2O3, and 5 to 25 mol % of R2O, where R is at least one kind selected from Li, Na and K. The glass ball includes a compressive stress layer in a surface thereof.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: June 8, 2021
    Assignee: AGC Inc.
    Inventors: Akio Koike, Makoto Katsuta, Suguru Murayama, Kenji Imakita
  • Patent number: 10948018
    Abstract: A bearing device for a wheel includes: an outer ring including a leg portion protruding radially on an outer periphery; an inner shaft provided on a shaft end; rolling elements; a sealing device which seals an opening portion on the flange side; and a slinger fixed to the inner shaft and extending axially at a radial outer side of the sealing device. The sealing device includes an elastic lip and a cylindrical cover portion in elastic contact with an outer peripheral surface of the outer ring. The slinger is opposed to at least a part of an outer periphery of the cover portion in a radial direction via a clearance.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: March 16, 2021
    Assignee: JTEKT CORPORATION
    Inventor: Akira Kitagawa
  • Patent number: 10816058
    Abstract: A torsional vibration damper in which a vibration damping performance is enhanced without increasing a manufacturing cost. A torsional vibration damper damps torsional vibrations by a relative rotation between a rotary member and an inertia body. Hardness of the contact surface of any one of the inertia body and a rolling mass is harder than the contact surface of the other one. Smoothness of the contact surface of any one of the inertia body and the rolling mass is smoother than the contact surface of the other one.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 27, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masayuki Ishibashi
  • Patent number: 10781857
    Abstract: A bearing (20; 150; 152) comprises: an inner race (26); an outer race (28); and a plurality of rolling elements (30). The inner race comprises a nitrogen-alloyed steel (40). The outer race comprises a steel (42) with lower nitrogen content than said nitrogen-alloyed steel.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: September 22, 2020
    Assignee: Carrier Corporation
    Inventors: Vishnu M. Sishtla, Ulf J. Jonsson, Zaffir A. Chaudhry
  • Patent number: 10753396
    Abstract: A Hybrid rolling bearing includes an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The outer raceway and the inner raceway are made from bearing steel, having a first surface RMS roughness Rq1. The rolling elements are made from a ceramic material and have second surface RMS roughnesses Rq2,i. At least one of the rolling elements has an increased surface RMS roughness Rq2,N, which is significantly higher than the RMS roughnesses Rq2,i, of the remaining rolling elements. The hybrid rolling bearing can be installed within a refrigerant compressor.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: August 25, 2020
    Assignee: Aktiebolaget SKF
    Inventors: Rudolf Hauleitner, Guillermo Enrique Morales Espejel, Antonio Gabelli, Aidan Kerrigan, Charlotte Vieillard
  • Patent number: 10746226
    Abstract: A method of making bearings includes treating a metallic surface of a bearing raceway with a pulsed electrochemical processing nozzle to transform the amorphous oxide into a crystalline structure on the metallic surface electro-chemically and convert the metallic surface into a ceramic like hardness surface. Treating the metallic surface can include forming a gradient in material composition transitioning from a purely metallic material at a cross-sectional position within the bearing raceway to a purely crystalline structure material at the ceramic like hardness surface of the bearing raceway.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: August 18, 2020
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Bruce D. Hansen, William P. Fallon, Jr.
  • Patent number: 10670076
    Abstract: Rolling bearings and methods of making the same are disclosed. The rolling bearing may include an inner ring, an outer ring and rolling elements arranged radially or axially between the inner ring and the outer ring. A coating may be formed at least partially on the inner ring, and/or on the outer ring, and/or on the rolling elements, wherein the coating is formed predominantly from tungsten and is configured to prevent white etching cracks. The rolling bearing may be used in a wind turbine.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: June 2, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Wolfram Kruhöffer, Toni Blaß, Bertram Haag
  • Patent number: 10655633
    Abstract: This impeller is equipped with: an impeller body formed from a resin and shaped as a disk with an axis as the center thereof, and having a boss hole section formed therein which a rotating shaft for rotating around the axis engages; compressor blades provided on the front-surface side of the impeller body; and a ring-shaped reinforcing ring provided inside the impeller body in the circumferential direction of the impeller body.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: May 19, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yasunori Watanabe, Ryoji Okabe
  • Patent number: 10563697
    Abstract: A rolling bearing has an outer diameter surface of the outer ring which is a fitting surface with a housing and the inner diameter surface of the inner ring, which is a fitting surface with a shaft. The outer diameter surface of the outer ring or the inner diameter surface of the inner ring is coated with a bonded film containing an organic binder, a solid lubricant powder such as molybdenum disulfide powder, and a friction/wear modifier such as antimony oxide powder. According to the rolling bearing, a creep resistance is kept excellent without causing increase in cost and size and being deformed and softened.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: February 18, 2020
    Assignee: NSK LTD.
    Inventors: Tomohiro Motoda, Hideyuki Uyama
  • Patent number: 10544796
    Abstract: This impeller is equipped with: an impeller body formed from a resin and shaped as a disk with an axis as the center thereof, and having a boss hole section formed therein which a rotating shaft for rotating around the axis engages; compressor blades provided on the front-surface side of the impeller body; and a ring-shaped reinforcing ring provided inside the impeller body in the circumferential direction of the impeller body.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: January 28, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yasunori Watanabe, Ryoji Okabe
  • Patent number: 10539178
    Abstract: A method of providing electrical discharge machining protection for a bearing is provided. The method includes (a) providing a bearing ring, (b) ionizing pure aluminum and depositing a pure aluminum layer on at least a portion of the bearing ring, (c) immersing the bearing ring in acid to convert the pure aluminum layer to an aluminum oxide layer, and (d) immersing the bearing ring in deionized water to seal the aluminum oxide layer.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: January 21, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Michael White
  • Patent number: 10527094
    Abstract: A Hybrid ball bearing including an outer raceway, an inner raceway, and a plurality of balls arranged between the inner raceway and the outer raceway. The outer raceway and the inner raceway are made from bearing steel and have a first surface RMS roughness Rq1. At least one ball of the plurality of balls is made from a ceramic material and has a second surface RMS roughness Rq2. In a mint condition, the roughness of the raceways Rq1 is 2 to 5 times higher than the roughness Rq2 of the at least one ball, as well as a refrigerant compressor comprising such a hybrid ball bearing.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: January 7, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Guillermo Enrique Morales Espejel, Rudolf Hauleitner, Aidan Kerrigan
  • Patent number: 10508687
    Abstract: A pivot assembly bearing device includes a shaft having an outer peripheral surface and a rolling bearing fixed to the shaft. An annular sealing surface axially overlapping with at least a part of an end surface of the rolling bearing is provided on an axially outer side of the rolling bearing. An oil-repellent film is annularly formed on at least one of the sealing surface and a part of the outer peripheral surface of the shaft located axially outward from the rolling bearing.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: December 17, 2019
    Assignee: Minebea Mitsumi Inc.
    Inventors: Atsushi Kaneko, Shinya Ohnuma, Kunihiro Tsuchiya
  • Patent number: 10480581
    Abstract: A method of making bearings includes treating a metallic surface of a bearing raceway with a pulsed electrochemical processing nozzle to transform the amorphous oxide into a crystalline structure on the metallic surface electro-chemically and convert the metallic surface into a ceramic like hardness surface. Treating the metallic surface can include forming a gradient in material composition transitioning from a purely metallic material at a cross-sectional position within the bearing raceway to a purely crystalline structure material at the ceramic like hardness surface of the bearing raceway.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: November 19, 2019
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Bruce D. Hansen, William P. Fallon, Jr.
  • Patent number: 10429373
    Abstract: A method is for diagnosing a rolling device comprising an outer member, an inner member, and a rolling element. The method includes applying an alternating voltage to an electric circuit configured by the outer member, the rolling element and the inner member, measuring an impedance and a phase of the electric circuit when the alternating voltage is applied to the electric circuit, and calculating a lubrication film thickness and a metallic contact ratio between the outer member and the rolling element and/or between the inner member and the rolling element, based on a measured impedance and a measured phase.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: October 1, 2019
    Assignee: NSK LTD.
    Inventors: Masayuki Maeda, Taisuke Maruyama, Ken Nakano
  • Patent number: 10415429
    Abstract: A planet gearbox is provided for connection to a carrier of an epicyclic gearing arrangement with a single input and single output and including a sun gear, a ring gear and at least one double helix planet gear rotatable on a cylindrical roller bearing with a cage having a cross-web thickness of 15% to 25% of the diameter of the cylindrical rollers and an L/D ratio exceeding 1.0. A gas turbine engine includes a fan and LP shaft, which couples a compressor to a turbine. An epicyclic gearing arrangement has a single input from the LP shaft coupled to a sun gear, a single output coupled to the fan's shaft, and a planet bearing cage having a cross-web thickness measuring 15% to 25% of the roller's diameter.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: September 17, 2019
    Assignee: General Electric Company
    Inventors: William Howard Hasting, Donald Albert Bradley, Joseph Robert Dickman
  • Patent number: 10358706
    Abstract: Provided is a carbonitrided bearing part which has high hardenability and toughness, and is excellent in wear resistance and surface-originated flaking life. A carbonitrided bearing part of the present embodiment has a chemical composition containing, in mass %, C: 0.15 to 0.45%, Si: not more than 0.50%, Mn: 0.40 to 1.50%, P: not more than 0.015%, S: not more than 0.005%, Cr: 0.30 to 2.0%, Mo: 0.10 to 0.35%, V: 0.20 to 0.40%, Al: 0.005 to 0.10%, N: not more than 0.030%, and O: not more than 0.0015%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2). At surface, C concentration is 0.7 to 1.2%, N concentration is 0.15 to 0.6%, and Rockwell hardness HRC is 58 to 65. 1.20<0.4Cr+0.4Mo+4.5V<2.60??(1) 2.7C+0.4Si+Mn+0.8Cr+Mo+V>2.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: July 23, 2019
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, JTEKT CORPORATION
    Inventors: Yutaka Neishi, Takahisa Suzuki, Tatsuya Koyama, Shingo Yamasaki, Kohei Kanetani, Takashi Sada
  • Patent number: 10302127
    Abstract: The present invention relates to a non-magnetic needle bearing for use in a rotational machine such as, for example, an MRI. The needle bearing may include needles, a cylindrical retainer holding the needles at a predetermined pitch, an outer ring outside of the retainer, and an inner ring inside the retainer. All of the aforementioned may be made of a non-thermoplastic polyimide resin.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 28, 2019
    Assignee: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Isao Fukazu, Satoru Sekiguchi
  • Patent number: 10288120
    Abstract: A method is provided that forms a solid film on a bearing component of a rolling bearing. A solution containing a fluorine compound and a lubricant having no functional group is allowed to adhere to the bearing component as a first liquid film (adhesion step). The adhering first liquid film is hardened to form the solid film on the bearing component. The rolling bearing including the bearing component with the solid film formed thereon is rotated. The rolling bearing is washed in a washer fluid containing the same lubricant as that used in the adhesion step, and the washer fluid is allowed to adhere to the bearing component as a second liquid film. Then, the adhering second liquid film is dried.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: May 14, 2019
    Assignee: JTEKT CORPORATION
    Inventor: Kazuyoshi Yamakawa
  • Patent number: 10273429
    Abstract: A lubricant for a rolling-element bearing includes a conventional lubricant as a base lubricant and at least one first additive, wherein the first additive includes muscovite, and the lubricant includes a proportion of muscovite that is between 3% and 5%. Also a method of lubricating a rolling-element bearing using the lubricant and a method of repairing a rolling-element bearing using the lubricant.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: April 30, 2019
    Assignee: Aktiebolaget SKF
    Inventors: Cornelia Haag, Yvonne Koehler, Kerstin Korbacher, Verena Kunkel, Franziska Mantei, Ilim Topaloglu, Marion Warmuth
  • Patent number: 10252767
    Abstract: In one example, a structure for attaching a wheel to one of a frame of a motorcycle or a bicycle may include an axle having first and second opposing end portions and supporting a wheel, a left axle support collar structure configured to support the first opposing end portion of the axle, and a right axle support collar structure configured to support the second opposing end portion of the axle. A first bearing is positioned in the left axle support collar structure, and a second bearing is positioned in the left axle support collar structure. The axle rotates relative to the frame.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: April 9, 2019
    Assignee: Yeti Cycling, LLC
    Inventor: Steven W. Hoogendoorn
  • Patent number: 10214960
    Abstract: An adjustable roller blind mounting bracket comprising a bracket member adapted for mounting to a surface, an adjustment plate slidably received upon the interior face of the bracket member, an adjuster to alter the position of the adjustment plate relative to the bracket member; and a shield secured to the adjustment plate and moveable therewith. The adjustment plate releasably receives and supports a roller tube shaft of a roller tube of the roller blind. The shield has an interior side surface offset from the adjustment plate that prevents contact between the adjuster and blind fabric received about the roller tube.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: February 26, 2019
    Assignee: ZMC Metal Coating Inc.
    Inventor: Philip Ng
  • Patent number: 10202678
    Abstract: Method for heat treating a steel component (28, 36) comprising the steps of: a) carbonitriding the steel component (28, 36) at a temperature of 930-970° C., b) cooling the steel component (28, 36), d) re-heating the steel component (28, 36) to a temperature of 780-820° C. and d) quenching the steel component (28, 36). The method comprises the step of either e) performing a bainite transformation at a temperature just above the martensite formation temperature, transforming 25-99% of the austenite into bainite at the temperature and then increasing the temperature to speed up the transformation of the remaining austenite into bainite, or f) holding the steel component (28, 36) at an initial temperature (T1) above the initial martensite formation temperature (Ms), and lowering the initial temperature (T1) to a temperature (T2) that is below the initial martensite formation temperature (Ms) but above the actual martensite formation temperature during the bainite transformation.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: February 12, 2019
    Assignee: Aktiebolaget SKF
    Inventors: Thore Lund, Tobias Meyer, Staffan Larsson, Peter Neuman
  • Patent number: 10190633
    Abstract: To provide a rolling bearing having excellent rust prevention capability and capable of being used for a long period of time in a highly corrosion environment. A rolling bearing 1 utilized for a power generator which generates power from natural energy or for generator equipment has one or more bearing members which form the bearing having a rust prevention film formed in a predetermined region of a surface of a base material. The rust prevention film is formed by a porous film with a sacrificial anode action against the base material in the whole of the predetermined region. The porous film in a part or the whole of the predetermined region is subjected to sealing treatment which impregnates the porous film with a sealing treatment agent from a surface of the porous film. A surface of a sealing treatment body obtained from the porous film subjected to the sealing treatment is subjected to first coating treatment which coats the surface of the sealing treatment body with epoxy resin coating.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: January 29, 2019
    Assignee: NTN Corporation
    Inventor: Kengo Hiramatsu
  • Patent number: 10184523
    Abstract: A rotating shaft assembly comprising a rotating shaft mounted within a casing and a primary bearing assembly in bearing engagement with the shaft and the casing and positioned between the shaft and the casing. The assembly also includes a secondary bearing assembly comprising a secondary bearing normally radially spaced from the shaft and arranged to engage with or contact the shaft in the event of failure of the primary bearing normally in contact with the shaft, and an inspection member to provide an indication of frictional engagement of the secondary bearing with the shaft.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: January 22, 2019
    Assignee: RATIER-FIGEAC SAS
    Inventor: Frédéric Vermande
  • Patent number: 10156259
    Abstract: A bearing component composed of steel which contains carbon not less than 0.95 mass % and not more than 1.1 mass %, silicon less than 0.3 mass %, manganese less than 0.5 mass %, sulfur less than 0.008 mass %, and chromium not less than 1.4 mass % and less than 1.6 mass % and is composed of remainder iron and an impurity and having a carbonitrided layer formed at a surface portion including a contact surface which is a surface in contact with other components is provided. An average concentration of nitrogen in the surface portion is not lower than 0.3 mass % and not higher than 0.6 mass % and variation in nitrogen concentration in the surface portion is not higher than 0.1 mass %. An amount of retained austenite in the surface portion is not greater than 8 volume %.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: December 18, 2018
    Assignee: NTN CORPORATION
    Inventors: Chikara Ohki, Yukio Matsubara, Daisuke Sato, Noriaki Miwa
  • Patent number: RE48336
    Abstract: A rolling apparatus including an external member having a raceway surface on an inner peripheral surface thereof, an internal member having a raceway surface on an outer peripheral surface thereof, and a plurality of rolling elements which are rotatably provided between the raceway surface of the external member and the raceway surface of the internal member. A surface of at least one of the internal member, the external member, and the rolling elements is subjected to carbonitriding or nitriding; an area percentage of a nitride containing Si and Mn is 1% or more and 20% or less; surface hardness is HV750 or more. When depth from the raceway surface or depth from a rolling surface of the rolling element is defined as Z and diameter of the rolling element is defined as d, hardness at Z=0.045 d is HV650 to 850, and hardness at Z=0.18 d is HV400 to 800.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: December 1, 2020
    Assignee: NSK LTD.
    Inventors: Koji Ueda, Toru Ueda, Naoya Seno, Nobuaki Mitamura