Race Structure Patents (Class 384/615)
  • Patent number: 11774032
    Abstract: A biaxial pivoting mechanism configured for connecting an object to a holder includes a mount component, a rotatable connector, a main body and a mount base. The mount component is configured to be fixed to the object. The rotatable connector is rotatably disposed on the mount component about a first axis. The main body is fixed to the rotatable connector. The mount base is configured to be fixed to the holder, and the main body is rotatably disposed on the mount base about a second axis not parallel to the first axis. The main body has a first surface, a second surface, and an accommodating space. The first surface is located closer to the rotatable connector than the second surface. The accommodating space extends to the second surface from the first surface. At least part of the mount base is located in the accommodating space.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: October 3, 2023
    Assignee: WISTRON CORP.
    Inventors: Miaochun Tang, Ji Tao Li
  • Patent number: 11703092
    Abstract: An outer contact surface element of a one-way clutch is configured to contact at least one clamping body of the one-way clutch when an inner ring of the one-way clutch rotates in a first direction. The outer contact surface element includes a hollow-cylindrical section, and at least one radially outwardly projecting lug. The outer contact surface element may also include features for connecting the outer contact surface element to a support bearing.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: July 18, 2023
    Assignee: AKTIEBOLAGET SKF
    Inventors: Juergen Barthelme, Helmut Hauck, Andreas Heile, Alexander Dilje, Daniel Jansen, Manfred Mattes, Rainer Linder, Rainer Spies
  • Patent number: 11678946
    Abstract: An apparatus for calibration of a robotic arm having an end effector of a robot includes a magnetic coupler having a body, a receiving face, a mounting member, and a magnetic portion. The mounting member is configured to fixedly connect to the end effector of the robotic arm. A mechanical digitizer probe having a ball and a handle are provided, where the ball is fixedly attached to a distal end of the handle and the ball is removably coupled to the magnetic coupler via the magnetic portion on the receiving face to form a rotatable ball and socket connection, and where a proximal end of the handle is adapted to be attached to a mechanical digitizer associated with the robot. A method for calibration of the robotic arm of a robot is also detailed.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: June 20, 2023
    Assignee: Think Surgical, Inc.
    Inventors: Kamran Shamaei Ghahfarokhi, Feimo Shen, Barry Voorhees, Muhammad Afnan
  • Patent number: 11628687
    Abstract: A protective covering is provided for covering an axle of a caster assembly including an exterior side that has an outer wall and an outer sidewall about a perimeter of and extending from the outer wall, and an interior side that has an inner wall recessed within the outer side and an inner sidewall extending from the inner sidewall. A main channel is defined within the recess of the interior side is configured to receive a leg of a bracket of the caster assembly and releasably retain the leg therein such that the protective covering is coupled to a side of the caster assembly. The exterior side preferably partially or entirely covers a hub of a wheel of the caster assembly and thereby reduces the likelihood of debris entering a cavity defined between the hub and the leg thereof.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: April 18, 2023
    Inventor: Andre Kafeleh Coates
  • Patent number: 11371563
    Abstract: Provided is a strut bearing including an upper case and a lower case that are made of a synthetic resin, and an engaging portion for preventing separation of components which are free from any stress exerted thereon during assembly. The strut bearing includes an outwardly-projecting piece row on an inner diameter side of an upper case, and an inwardly-projecting piece row on an inner diameter side of a lower case. Within a relative pivoting range of the upper and lower cases in a use state of the strut bearing, a detachment preventing engagement portion for preventing the upper and lower cases from being separated from each other in the axial direction is provided. Within a predetermined angle range outside the relative pivoting range, the detachment preventing engagement portion is not present.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: June 28, 2022
    Assignee: NAKANISHI METAL WORKS CO., LTD.
    Inventors: Yasuhiro Narazaki, Yoshio Horikawa, Kohei Shibata
  • Patent number: 11143236
    Abstract: A pair of hybrid ball bearings have stainless steel rings and ceramic balls and are configured such that when the first inner ring and the first outer ring are in contact with the first plurality of ceramic balls under zero measuring load and zero mounting load and the second inner ring and the second outer ring are in contact with the second plurality of ceramic balls under zero measuring load and zero mounting load a certain gap exists between either the inner rings or the outer rings. The gap is based on the diameter of the inner ring or on the pitch diameter of the balls and on whether the bearings have an X configuration or an O configuration.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: October 12, 2021
    Assignee: AKTIEBOLAGET SKF
    Inventors: Hans Wallin, Rudolf Hauleitner
  • Patent number: 11111969
    Abstract: A clutch thrust bearing device including a rolling bearing, an axially movable piston having a radial plate, and a resilient biasing member. At least one between the inner and the outer peripheries of the radial plate of the axially movable piston is provided with a bearing sealing element of resilient material having at least one sealing lip in sliding contact with the rotatable ring of rolling bearing.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: September 7, 2021
    Assignee: Aktiebolaget SKF
    Inventors: Benoit Arnault, Benoît Hauvespre, Thomas Perrotin, Nicolas Tronquoy, Samuel Viault
  • Patent number: 11110023
    Abstract: A chair including a seat, a seatback, a lift, at least one electric motor, and a brake and swivel system having a dual bearing Lazy Susan rotating mechanism, two soft bumpers, and a disc brake locking mechanism with a handle.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: September 7, 2021
    Assignee: Boyd Industries, Inc.
    Inventors: Jesse Knight, Tim Sass, Tim Maneval
  • Patent number: 11009035
    Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are configured with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 18, 2021
    Assignee: Aktiebolaget SKF
    Inventors: Hans Wallin, Rudolf Hauleitner
  • Patent number: 10655610
    Abstract: The present disclosure is directed to a bearing assembly for a wind turbine. The bearing assembly includes an outer race, an inner race rotatable relative to the outer race, a plurality of rolling elements positioned between the inner and outer races, and at least one wire race arranged with the plurality of rolling elements between the inner and outer races.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 19, 2020
    Assignee: General Electric Company
    Inventors: Edward Lee McGrath, Priyangu Chunilal Patel
  • Patent number: 10544828
    Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are designed with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: January 28, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Rudolf Hauleitner, Hans Wallin
  • Patent number: 10371209
    Abstract: Rings for a rolling bearing are disclosed, wherein the rings define a primary axis (A). The ring may include a ring formed as a hollow ring having a hollow chamber encircling the primary axis (A). A wall of the hollow ring may be of one-piece and/or seamless design in an axial section along the primary axis (A). The ring may be a bearing ring configured for rolling contact with rolling elements. In one example, the wall includes a raceway section in the wall for rolling contact with the rolling elements, a bearing bottom section for supporting the ring, two lateral supporting wall sections, and two connecting sections for connecting the two lateral supporting wall sections to the raceway section.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: August 6, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Torsten Keller, Heinz Pedrotti, Winfried Ott
  • Patent number: 10076863
    Abstract: The present invention is a method and apparatus for quick and easy rubber sleeve exchanges on chill rolls, such as are used in film extrusion processes. The apparatus includes chill roll or mandrel, a rubber sleeve covering the exterior face of the mandrel, an automated cantilever system, and an air booster. The rubber sleeve is easily removed by tilting the mandrel and inserting a layer of air between the rubber sleeve and the mandrel, thereby allowing the sleeve to slip off the mandrel and allowing for a new rubber sleeve to be placed onto the mandrel.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: September 18, 2018
    Assignee: Bryce Corporation
    Inventor: John Andrew Pratt
  • Patent number: 9945419
    Abstract: A retainer (30) for maintaining a relative angular spacing of a plurality of rolling elements includes a body (34) having an annular portion (38) and a plurality of engaging portions (42). Each of the engaging portions is configured to engage at least one of the plurality of rolling elements. The body is made of a sintered powdered metal infiltrated with bronze.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: April 17, 2018
    Assignee: The Timken Company
    Inventors: Praveen Pauskar, Richard J. Abbruzzi
  • Patent number: 9261135
    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 20, 2014
    Date of Patent: February 16, 2016
    Assignee: NSK LTD.
    Inventors: Hiroyuki Hara, Kazuhiko Kanou, Tomoyuki Yokota
  • Publication number: 20150125106
    Abstract: A thrust nut for bearing against an axle includes a nut body, a first race member and a row of rolling elements. The nut body has opposing first and second surfaces and defines a threaded hole therein. The first race member is arranged to face the first surface of the nut body. The nut body serves as a second race member and cooperates with the first race member to co-define an annular track therebetween. The row of rolling elements is disposed in the annular track between the first race member and the nut body.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 7, 2015
    Inventor: Tsai-Chi Lin
  • Patent number: 8992094
    Abstract: A suspension strut bearing including a guide ring arranged along a suspension strut axis, and a cap. The guide ring is configured for mounting a coil spring, and the cap is configured for supporting the suspension strut bearing on an undercarriage of an automotive vehicle. The guide ring includes a radial flange and further includes a guide nozzle adjoining the radial flange, the guide nozzle serving to guide said coil spring, the suspension strut bearing further including a thrust bearing arranged between the radial flange of the guide ring and the cap. The guide ring includes a reinforcement ring spray coated with a plastic, which reinforcement ring further includes a bushing section for reinforcing the guide nozzle and an integrally formed adjoining radial collar for reinforcing the radial flange, wherein the reinforcement ring is configured as a bearing part of the thrust bearing.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: March 31, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Ralf Stautner, Andreas Woellner, Rainer Lutz
  • Patent number: 8894295
    Abstract: A suspension strut bearing includes a guide ring, a cap, and a thrust bearing for an axial mounting of the guide ring on the cap. The plastic guide ring is reinforced with a reinforcement ring including a radial flange, an axial guide nozzle adjoining the radial flange, a bushing section for reinforcing the guide nozzle and an integrally formed radial collar adjoining the guide nozzle for reinforcing the radial flange. A sliding seal is made out of a softer plastic and sprayed onto the radial flange of the guide ring, a sealing lip of the sliding seal being arranged around the guide ring and bearing against a peripheral surface of the cap, the radial collar of the reinforcement ring forming an integrally configured raceway of the thrust bearing. The radial collar includes recesses arranged spaced along a periphery of the radial collar, through which recesses the softer plastic penetrates.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: November 25, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Ralf Stautner, Andreas Woellner, Rainer Lutz
  • 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
  • Patent number: 8840316
    Abstract: A suspension thrust bearing device having a lower cover, an upper cover and a rolling bearing disposed between the lower cover and the upper cover. The rolling bearing providing a lower ring mounted on the lower cover and an upper ring mounted on the upper cover. The rolling bearing further providing rolling elements disposed between the two rings. The lower cover has a body formed of a rigid material part and a flexible material part forming a seal of the device. The flexible part of the lower cover includes at least one labyrinth sealing lip that cooperates with the upper cover to leave a narrow passage forming a labyrinth seal between one edge of the labyrinth sealing lip and the upper cover and at least one rubbing sealing lip in contact with the upper cover.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: September 23, 2014
    Assignee: Aktiebolaget SKF
    Inventors: Bruno Montboeuf, Désiré Vidot, Florence Crenn, Richard Corbett
  • Patent number: 8668389
    Abstract: A thrust bearing assembly includes a single-piece thrust plate and thrust shaft flange having a generally cylindrical body portion, a frustoconical body portion and a bore extending through the cylindrical body portion and the frustoconical body portion. The bore defines a first bore section and a second bore section. A lip extends between the first and second bore sections. The first bore section, the second bore section and the lip are configured to receive a thrust shaft and axial thrust forces transmitted therefrom. The thrust bearing assembly also includes a bearing assembly in operable communication with the single-piece thrust plate and thrust shaft flange. The bearing assembly supports rotation of the thrust shaft and includes a plurality of first rolling elements. The bearing assembly includes a bearing cage to retain the first rolling elements and a plurality of second rolling elements disposed between the bearing cage and the thrust shaft.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: March 11, 2014
    Assignee: Davis-Standard, LLC
    Inventor: Ernest W. Plasse
  • Patent number: 8636419
    Abstract: A bearing assembly includes at least one rolling bearing unit having an outer race and an inner race rotatable relative to the outer race, and two annular bodies of plastic material overmoulded on the outer race and the inner race, respectively, of the bearing unit. At least one of the two annular bodies has a free cylindrical surface. One of the two bearing races forms a radially extending flange having a cylindrical end surface, circumferentially continuous or discrete, which ends flush with the free cylindrical surface of plastic material.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: January 28, 2014
    Assignee: Aktiebolaget SKF
    Inventors: Roberto Mola, Philippe Peroz, Francesco Gallucci, Riccardo Restivo
  • Publication number: 20140023307
    Abstract: A suspension strut bearing including a guide ring arranged along a suspension strut axis, and a cap. The guide ring is configured for mounting a coil spring, and the cap is configured for supporting the suspension strut bearing on an undercarriage of an automotive vehicle. The guide ring includes a radial flange and further includes a guide nozzle adjoining the radial flange, the guide nozzle serving to guide said coil spring, the suspension strut bearing further including a thrust bearing arranged between the radial flange of the guide ring and the cap. The guide ring includes a reinforcement ring spray coated with a plastic, which reinforcement ring further includes a bushing section for reinforcing the guide nozzle and an integrally formed adjoining radial collar for reinforcing the radial flange, wherein the reinforcement ring is configured as a bearing part of the thrust bearing.
    Type: Application
    Filed: July 16, 2013
    Publication date: January 23, 2014
    Inventors: Ralf Stautner, Andreas Woellner, Rainer Lutz
  • Publication number: 20140023308
    Abstract: A suspension strut bearing includes a guide ring, a cap, and a thrust bearing for an axial mounting of the guide ring on the cap. The plastic guide ring is reinforced with a reinforcement ring including a radial flange, an axial guide nozzle adjoining the radial flange, a bushing section for reinforcing the guide nozzle and an integrally formed radial collar adjoining the guide nozzle for reinforcing the radial flange. A sliding seal is made out of a softer plastic and sprayed onto the radial flange of the guide ring, a sealing lip of the sliding seal being arranged around the guide ring and bearing against a peripheral surface of the cap, the radial collar of the reinforcement ring forming an integrally configured raceway of the thrust bearing. The radial collar includes recesses arranged spaced along a periphery of the radial collar, through which recesses the softer plastic penetrates.
    Type: Application
    Filed: July 16, 2013
    Publication date: January 23, 2014
    Inventors: Ralf Stautner, Andreas Woellner, Rainer Lutz
  • Patent number: 8596878
    Abstract: The invention relates to a rolling bearing 1 comprising a lower ring 3 mounted inside a lower annular cup 6, an upper ring 2 mounted inside an upper annular cup 7, and at least one row of rolling elements 4 positioned between raceways defined by lower and upper rings. One of the annular cups has at least one annular skirt 6d partly inserted within at least one annular groove 7m provided in the other annular cup, thus forming a sinuous chamber 8, and the sinuous chamber is at least partly filled with at least one waterproof grease material 9.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: December 3, 2013
    Assignee: Aktiebolaget SKF
    Inventors: Christophe Houdayer, Sylvain Bussit, Richard Corbett, Samuel Viault, Bruno Montboeuf
  • Publication number: 20130272642
    Abstract: A rotary connection apparatus comprising a bottom bracket, a top bracket rotatably connected to the bottom bracket, an annular spacer and a plurality of balls. The spacer and the balls are received between the bottom bracket and the top bracket. A thickness of the spacer is less than a diameter of the balls, and the spacer includes a plurality of holding holes, each holding hole has two openings exposed at opposite surfaces of the spacer, and a diameter of each of the openings is less than that of the balls, and a diameter of a central portion of each holding hole is equal to the diameter of the balls; each of the holding holes accommodates one corresponding ball, and each ball has opposite end portions protruding out of the spacer. A spacer is also provided.
    Type: Application
    Filed: April 9, 2013
    Publication date: October 17, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD .
    Inventors: GUO-FENG LI, YA-PING TENG, MENG-HUA HE, LI-HUA DING, HUI YE, LING-KONG WANG, CHUN-CHE YEN, FENG-HSING HSIEH
  • Publication number: 20130207365
    Abstract: The present invention concerns a suspension thrust bearing device adapted to receive a shock absorber piston rod along a main axis (X1), the device including a single bearing forming an axial thrust bearing and including an inner race, an outer race and rolling members disposed between the inner race and the outer race, and at least one intermediate member adapted to transmit to the inner race essentially axial forces exerted on the device by a suspension spring. One of the inner race and the intermediate member extend(s) radially beyond the outer race in the direction of the main axis (X1), forming a bearing surface for fixing and centring the shock absorber piston rod relative to the device. The invention also concerns a motor vehicle McPherson strut including a shock absorber and a suspension thrust bearing device as referred to above.
    Type: Application
    Filed: February 7, 2013
    Publication date: August 15, 2013
    Applicant: AKTIEBOLAGET SKF
    Inventor: AKTIEBOLAGET SKF
  • Publication number: 20130188901
    Abstract: The present invention provides a thrust bearing that is incorporated in a hydraulic continuously variable transmission, and includes: an inner ring that comes into contact with a piston of a piston chamber of a variable capacity pump; an outer ring that is fixed to a swash plate; and a plurality of rolling elements that are held between the inner ring and the outer ring via a cage, wherein: a groove bottom thickness (Ti) of the inner ring is 40% or more of a ball diameter; a groove bottom thickness (Te) of the outer ring is 15% or more of the ball diameter; and a ratio of (Ti/Te) is is more than 1 and less than 3. Thereby, damage of the inner ring is prevented, and thus a thrust bearing for a hydraulic continuously variable transmission of a long service life is provided.
    Type: Application
    Filed: January 26, 2012
    Publication date: July 25, 2013
    Applicant: NSK LTD.
    Inventors: Chisato Tateyama, Masato Miyamoto
  • Patent number: 8443684
    Abstract: The subject is a rotary drive device (1), which has a device housing (7) in which drive means (2) are disposed that are in driving communication with a rotatably supported power takeoff part (4). The power takeoff part (4) has a power takeoff disc (5) that is received at least partly in a bearing receptacle (25) of the device housing (7), the power takeoff disc being surrounded by an annular roller bearing unit (33). The roller bearing unit has a bearing assembly (34) with rolling elements (35) and with one inner and one outer running surface arrangement (37, 38), and the entire bearing assembly (34) is disposed inside the bearing receptacle (25) and is surrounded radially outward by a boundary wall portion (27) of the device housing (7).
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: May 21, 2013
    Assignee: Festo AG & Co. KG
    Inventors: Gerhard Thorwart, Rainer Armbruster
  • Patent number: 8360658
    Abstract: The invention relates to a bearing assembly, which includes at least one upper segment with an upper running surface and at least one lower segment with a lower running surface. The bearing assembly also includes at least one roll element movably arranged between the upper running surface and the lower running surface.
    Type: Grant
    Filed: November 11, 2005
    Date of Patent: January 29, 2013
    Assignee: Buehler AG
    Inventors: Kai Silbermann, Wolf-Eckart Bischoff
  • Publication number: 20120111024
    Abstract: One embodiment of the present invention is a unique gas turbine engine. Another embodiment is a unique gas turbine engine high speed rolling element bearing system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for gas turbine engines and high speed rolling element bearing systems for gas turbine engines. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.
    Type: Application
    Filed: December 29, 2010
    Publication date: May 10, 2012
    Inventor: Paul A. Kachinski
  • 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: 20110311173
    Abstract: The present invention provides a rolling bearing which is excellent in high-temperatures and high-speed durability and quietness, is capable of effectively preventing hydrogen brittleness-caused peeling from occurring on a rolling surface thereof, and has a low environmental load. A rolling bearing (1) is constructed of an inner ring (2) having a rolling surface on its peripheral surface, an outer ring (3) having a rolling surface on its inner peripheral surface, a plurality of rolling elements (4) disposed between both rolling surfaces, and a cage (5) retaining the rolling elements (4). The inner ring (2), the outer ring (3), the rolling elements (4) or the cage (5) is a metal-made bearing member. Film-coating treatment is conducted on a sliding surface or a rolling surface of at least one of these metal-made bearing members with the plant-derived polyvalent alcohol compounds such as curcumin, quercetin, chlorogenic acid or the like.
    Type: Application
    Filed: February 24, 2010
    Publication date: December 22, 2011
    Applicant: NTN CORPORATION
    Inventors: Hidenobu Mikami, Yosuke Taguchi
  • Publication number: 20110188797
    Abstract: This rolling bearing (1) comprises an inner ring (2), an outer ring (3), rolling members (5) placed in a rolling bearing chamber (4) arranged between the inner and outer rings, a bistable washer (7) capable of selectively taking one of two predetermined configurations, and an annular flange (8) partly delimiting the rolling bearing chamber (4) and mounted on a first ring (3; 2) of the inner and outer rings. The flange (8) extends radially from the first ring (3; 2) and is axially aligned with the second ring (2; 3).
    Type: Application
    Filed: September 15, 2009
    Publication date: August 4, 2011
    Inventor: Benoit Arnault
  • Publication number: 20110079444
    Abstract: A hybrid-type earth boring drill bit is described having fixed cutting blades and rolling cones with cutting elements, wherein the rolling cones are associated with a spindle assembly that may be optionally divorced from the head pin assembly, and which includes bearing members that further include a plurality of polycrystalline diamond elements.
    Type: Application
    Filed: September 16, 2010
    Publication date: April 7, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Ajay V. Kulkarni
  • Publication number: 20110012455
    Abstract: A bearing (10) for use in a downhole motor assembly having an inner race (12) formed as a unitary construction. The inner race (12) has an inner surface (14) defining a first diameter (D1) and an outer surface (16) defining an second diameter (D2) and a number of race-ways (18). The bearing (10) also has an outer race (20) having an inner surface (22) defining a first diameter (D3), an outer surface (26) defining a second diameter (D4) and a number of race-ways (28). Bearing elements (30) are provided in the raceways (18, 28) to couple the inner race (12) and the outer race (20) such that, in use, the inner race (12) and the outer race (20) can rotate relative to each other. The inner race (12) of the bearing (10) is configured so that an inner diameter of the inner race is outside a drill through of a downhole motor assembly.
    Type: Application
    Filed: July 16, 2010
    Publication date: January 20, 2011
    Inventor: Edward Docherty Scott
  • Patent number: 7846031
    Abstract: A universal joint having a spider provided with four staggered journals. A socket having an axial bearing in addition to a radial bearing is associated with each journal. The axial bearing has rolling bodies that are guided between a front surface of the journal and the bottom of the universal joint socket.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: December 7, 2010
    Assignee: Schaeffler KG
    Inventors: Alexander Zernickel, Martin Kruppa
  • 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: 20070253658
    Abstract: The rotatable joinder of two sheets is provided by a two-piece interfitting bearing assembly with each element separately attached to one of the sheets so that the sheets are joined but rotation is controlled by the interfitting bearing surfaces. The interfitting parts comprise an inner and outer race which are placed together in superposition with aligned apertures in the sheets. The rotatable attachment of the sheets is accomplished in a single pressing operation in which each race is simultaneously pressed into one of the sheets with a gap remaining between them.
    Type: Application
    Filed: March 7, 2007
    Publication date: November 1, 2007
    Applicant: PEM MANAGEMENT, INC.
    Inventor: Michael J. Maloney
  • Patent number: 7246801
    Abstract: The present invention relates to a self-tightening keyless chuck to enable electric percussive drills to grip a tool shank. The chuck includes a rear sleeve, a body, a bearing ring, a bearing assembly, a nut, a jaw, a front sleeve and a stopper and so on. The bearing assembly utilizing a ball bearing is positioned with a circumferential arcuate race with a fixed depth, and the bottom surfaces of said circumferential arcuate race are provided with a plurality of ball-shape grooves. During the chuck grips a tool shank, the balls of said ball-bearing enter into the ball-shape grooves and are locked there, so as to prevent the tool from loosening due to the percussion vibration. In addition, the front sleeve engages with a nut through radial smooth press-fit to securely transmit a torque.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: July 24, 2007
    Assignee: Shanxi Huifeng Power Tools Co., Ltd.
    Inventors: Xianming Tian, Huijun Pei, Lihang Su, Qiaoyu Xu
  • Patent number: 6997619
    Abstract: A clutch-release mechanism for actuating the friction clutch of a motor vehicle, installed concentrically around a guide sleeve, includes a release bearing with an inner ring and an outer ring as well as a sliding sleeve. The inner ring is in working contact with a release spring of the friction clutch and the outer ring is in working contact with the sliding sleeve by way of a sliding surface, and the release mechanism has both a first device for compensating for a tilt of the center axis of the friction clutch with respect to the center axis of the guide sleeve and/or for a wobbling eccentricity of the release spring, and a second device for compensating for an offset between the above-mentioned center axes. The first device consists of a modified raceway for the balls, where the race has both a first race radius and a second race radius to form a surface in the form of a spherical segment, where differences between the angles of the release spring and of the release bearing are compensated.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: February 14, 2006
    Assignee: ZF Sachs AG
    Inventor: Klaus Reuter
  • Patent number: 6814496
    Abstract: A suspension thrust bearing including a first race, a second race, a row of rolling bodies disposed between the two races, a first cap 13 in contact with the first race, and a first cup 4 in contact with the first cap 13. The first cap 13 includes integral axial retention means for retaining the first cup 4.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: November 9, 2004
    Assignee: Aktiebolaget SKF
    Inventors: Eric Beghini, Christophe Houdayer
  • Patent number: 6733415
    Abstract: In a power roller for a toroidal continuously variable transmission, temperature rise of a power transmission part can be prevented by suppressing the heat in a rolling contact part between a ball and an inner race groove. By setting a radius of curvature of an inner race groove less than a radius of curvature of an outer race groove, a Hertzian contact area between the inner race groove and the ball is set larger than a Hertzian contact area between the outer race groove and the ball. Further, the pitch diameter of the inner race groove is set to be less than the pitch diameter of the outer race groove. By doing so, the direction of the rotation axis of the ball can be set to a direction wherein the spin of the inner race is less than the spin of the outer race.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: May 11, 2004
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Takeshi Yamamoto
  • Patent number: 6732435
    Abstract: A method of manufacturing a lightweight bearing in which raceway surface parts are formed of iron-based material and body members are formed of a lightweight material that is lighter than the iron-based material. Bearing rings are manufactured by producing first and second split body members whose shapes are identical to those obtained by dividing the body members transversely along a plane perpendicular to the center axis, producing split raceway surface members whose shapes are identical to those obtained by similarly dividing the raceway surface formation members, and bonding together split raceway surface members and split body members.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: May 11, 2004
    Assignee: Harmonic Drive Systems Inc.
    Inventor: Yoshihide Kiyosawa
  • Publication number: 20030198422
    Abstract: In a toroidal type continuously variable transmission, a power roller bearing that serves as a thrust bearing includes an inner race composed of a part of a power roller, an outer race opposed to the inner race, and balls arranged for rolling motion between the outer and inner races. The power roller is in rolling contact with input and output disks and pressed thereby in a thrust direction. An end face of the inner race is formed having a first raceway groove having an arcuate cross section and in contact with the balls. An end face of the outer race is formed having a second raceway groove having an arcuate cross section and in contact with the balls. The second raceway groove is shallower than the first raceway groove, and the center of each of the balls is situated nearer to the inner race than a center position between the respective end faces of the outer and inner races is.
    Type: Application
    Filed: May 6, 2003
    Publication date: October 23, 2003
    Applicant: NSK Ltd.
    Inventor: Kouji Ishikawa
  • Patent number: 6612749
    Abstract: Clutch bearing device comprising an actuating element intended to be mounted on an operating element 2. The actuating element comprises a rolling bearing 1 provided with a rotating race 15 and with a non-rotating race 9, the said bearing 1 being able to be displaced radially with respect to the operating element 2 to self-align with the clutch diaphragm, the non-rotating race 9 comprising an inwardly-directed radial portion 13. The device comprises a means of axially securing the actuating element to the operating element 2. The device comprises a self-alignment member 21 centered on the non-rotating race 9 and provided with axially elastic elements 23.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: September 2, 2003
    Assignee: Aktiebolaget SKF
    Inventors: Benoît Arnault, Hervé Girardin
  • Patent number: 6558043
    Abstract: Suspension thrust rolling bearing device of the type comprising a first ring 12, a second ring 13 made of thin sheet, a row of rolling bodies 14 arranged between the two rings, a cap 16 secured to the first ring and a plate 11 capable of forming a seat for a spring 10. The plate 11 comprises a means for securing it directly axially to the second ring 13 or to the cap 16.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: May 6, 2003
    Assignee: SKF France
    Inventors: Eric Beghini, Christophe Houdayer
  • Patent number: 6550755
    Abstract: A coil spring (1) and support bearing (2) arrangement for suspension struts (3) with a shock absorber, supporting a steering knuckle of an automobile has a rolling-contact bearing (7), with an axis (x); a receiving body (6), arranged below the rolling-contact bearing (7) in which the rolling-contact bearing is inserted; and a coil spring (1). The coil spring (1) has a force application line (f), which is offset relative to the axis (x) of the rolling-contact bearing (7) at an angle (a). The coil spring (1) has a first portion (8), which, starting from the winding end (17), winds around the receiving body (6). The first portion (8) abuts the receiving body (6). The winding end (17) of the coil spring (1) is arranged in the area of the plane E1 formed by the force application line (f) and the axis (x).
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: April 22, 2003
    Assignees: INA Walzlager Schaeffler OHG, Muhr und Bender KG
    Inventors: Herbert Ehrhardt, Ulrich Grau, Gerhard Meyer, Alexander Zernickel, Vladimir Kobelev, Markus Röhling
  • Patent number: 6536781
    Abstract: A chuck for use with a manual or powered driver including a generally cylindrical body having a nose section and a tail section. The tail section defines an axial bore formed therein to mate with the drive shaft of the driver and the nose section defines an axial bore formed therein and a plurality of angularly disposed passageways formed therethrough and intersecting the axial bore. A plurality of jaws are slidably positioned in each passageway and each jaw defines a jaw face formed on one side and threads formed on the opposite side. A nut is disposed about the body for rotational movement with respect to the body and is in driving engagement with the jaw threads. A generally cylindrical front sleeve overlays the nose section of the body. A generally cylindrical nut retainer is disposed about the body and includes a frusto-conical portion.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: March 25, 2003
    Assignee: Power Tool Holders, Incorporated
    Inventors: Christopher B. Barton, Stephen W. Steadings