For Bearing At End Of Shaft Patents (Class 384/371)
  • Patent number: 8984858
    Abstract: One embodiment of the present invention is a unique gas turbine engine. Another embodiment of the present invention is a unique gas turbine engine bearing system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for gas turbine engines and gas turbine engine bearing systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: March 24, 2015
    Assignee: Rolls-Royce Corporation
    Inventor: Matthew Michael Miller
  • Publication number: 20140037235
    Abstract: A bearing for retro-fit or repair of an engine provides high reliability through a sleeved bearing design having externally-supplied lubrication. The bearing assembly may be supplied as a kit including a lubrication delivery tube and an oil filter adapter having a port for supplying the external lubrication to a mounting flange of the bearing. In order to install the bearing a captive sleeve is inserted in a hollow end of the shaft being supported. A cap having a threaded stud is inserted with the sleeve into the hollow end of the shaft and secured by the required snap ring. Then a nut is used to secure the cap and the sleeve to a stud affixed to the mounting flange that secures the bearing assembly to the engine.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 6, 2014
    Applicant: IMS SOLUTION
    Inventors: Jacob Dean Raby, Charles Lauren Navarro
  • Patent number: 8419286
    Abstract: A compressor has a rotation shaft in a hermetic container, and first and second bearings to support the shaft in the container. A tolerance between the second bearing and the rotation shaft and a tolerance between the first bearing and the rotation shaft are different, so as to cause hydrodynamic lubrication to occur at one of the first or second bearings.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: April 16, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jeongmin Han, Jaechan An, Hongseok Seo, Keunju Lee
  • Publication number: 20120313471
    Abstract: A thrust bearing assembly for supporting an end surface against an axial load, includes a first part with a chamber; a second part disposed in the chamber and having a load surface facing the end surface; and a third part fixed with the first part and spaced from the second part. A reservoir for storing lubricant is formed in the chamber between the second part and third part. A narrow passage communicates the reservoir with the load surface to allow the lubricant to flow from the reservoir to the load surface to lubricate the interface between the load surface and the end surface when the axial load rotates.
    Type: Application
    Filed: June 7, 2012
    Publication date: December 13, 2012
    Inventors: James Ching Sik Lau, Duncan Yiu Lung Wong, Yuen Tung Louie
  • Publication number: 20120002910
    Abstract: A thrust ring for an undercarriage in a track-type machine includes an annular body having an outer circular edge and an inner circular edge defining a common center axis. A first set of oil grooves and a first set of thrust faces are positioned in an alternating arrangement on each of a first axial side and a second axial side of the annular body. Each of the oil grooves includes a cross sectional contour shaped to balance an oil flow property of the thrust ring with a strength property of the thrust ring, and defining a non-uniform curve which includes a plurality of curve segments each having a different radial attribute. The thrust ring defines a Plouzek value equal to 1.
    Type: Application
    Filed: June 23, 2011
    Publication date: January 5, 2012
    Applicant: CATERPILLAR INC.
    Inventors: Anthony R. Snyder, John M. Plouzek
  • Patent number: 6869221
    Abstract: A washer in accordance with the present invention mainly comprises an axial hole and a plurality of oil-bearing holes. The oil-bearing holes are connected an outer surface of the washer to an inner surface, and surround the axial hole.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: March 22, 2005
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, Yin-Rong Hong, Ching-Sheng Hong
  • Patent number: 6746216
    Abstract: An oil pump for a scroll compressor has a bearing hub with a vent disposed between at least one fluid inlet in the bearing hub and a thrust washer. The vent provides an additional fluid flow path to equalize fluid pressure underneath the thrust washer. By minimizing or eliminating low fluid pressure zones with the bearing hub, fluid flow through the oil pump can be maintained at a constant level.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: June 8, 2004
    Assignee: Scroll Technologies
    Inventor: Zili Sun
  • Patent number: 6674200
    Abstract: Spindle motor that has high rotational precision and is manufacturable at low cost, and that can be applied even in miniature, low-profile recording-disk drives. The spindle motor includes a shaft having a cone portion, a conic-shaped cavity into which the cone portion is inserted, and only a single dynamic-pressure bearing, formed on the lateral face of the cone portion. The working fluid is oil, and the oil fills without interruption a clearance between the shaft's cone portion and the conical cavity.
    Type: Grant
    Filed: June 22, 2002
    Date of Patent: January 6, 2004
    Assignee: NIDEC Corporation
    Inventor: Shinya Tokunaga
  • Patent number: 6583952
    Abstract: A hydrodynamic bearing system where the bearing includes a shaft and two independent bearings, including a top cone or bi-sphere and a bottom cone or bi-sphere separated by a segment of the shaft. The bearing includes a hub supported bearing element rotating around the shaft and the shaft supported top cone and bottom cone; complementary surfaces of the bearing element and the cone define a narrow gap between the bearing support element for the bearing fluid. Sealing plates or seal elements define a fluid gap with a radially extending face of the cone; a gap also exists between an interior surface portion of each cone and the shaft. These gaps are connected so that separate flow paths are established, one around the top cone or bi-sphere and one around the bottom cone or bi-sphere. By providing two independent bearings, the stator can be mounted to the shaft, facing magnets supported on the hub to form an in-hub motor.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: June 24, 2003
    Assignee: Seagate Technology LLC
    Inventors: Alan Lyndon Grantz, Norbert Steven Parsoneault, Samnathan Murthy, Hans Leuthold, Mohamed Mizanur Rahman
  • Patent number: 6398417
    Abstract: A rolling member is utilized for such as a rolling bearing and the rolling members are disposed to be rollable between members which are relatively movable with respect to each other. The rolling member is provided with a rolling portion contacting the movable members during the rolling motion thereof and longitudinal both end portions. The rolling portion is formed to provide a protruded circular arc shape and the end portions are formed so as to provide a spherical shape, the circular rolling portion has a radius of curvature larger than a radius of each of the end spherical portions, and a distance between the end spherical portions is larger than a maximum diameter of the circular rolling portion.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: June 4, 2002
    Inventor: Hiroshi Teramachi
  • Patent number: 5927861
    Abstract: A motor bearing device includes a bearing member, and a rotary shaft made of steel into which ions of metal element and carbon ions are implanted via a surface of the rotary shaft. The rotary shaft is slidable relative to the bearing member. The metal element is selected from the group consisting of metal elements in the IVa, Va, and VIa groups of the periodic system. Lubricant is provided between the bearing member and the rotary shaft. The surface of the rotary shaft opposes the bearing member.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: July 27, 1999
    Assignees: Matsushita Electric Industrial Co., Ltd., Nippon Steel Corporation
    Inventors: Fumitoshi Yamashita, Katsuhiro Murano, Seiji Kurozumi, Kazunori Hayashi, Kanao Fukuda, Masato Inayoshi
  • Patent number: 5865678
    Abstract: An annular two-piece thrust washer for use between the end wall of a bearing cup and the axially outer ends of the bearings and trunnion of a universal joint assembly includes a first piece and a second piece. The first piece is sized to be disposed between the axially outer ends of the bearings and the end wall of the bearing cup. In a preferred embodiment, a circumferential recess is formed at the junction between the radially inner surface and the axially outer surface of the first piece. The second piece of the thrust washer is sized to be disposed between the trunnion and the end wall of the bearing cup. When assembled, the second piece of the thrust washer is disposed within the first piece. The outer circumferential portion of the second piece extends into the circumferential recess of the first piece. A predetermined small clearance is provided between the first piece and the second piece which allows a limited amount of relative movement therebetween.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: February 2, 1999
    Assignee: Dana Corporation
    Inventors: James G. Koedam, Daniel C. Perry
  • Patent number: 5725431
    Abstract: A thrust washer for use in a universal joint having a preloading thrust surface includes a center aperture, an outer surface and an inner surface. A portion of the inner surface defines a thrust surface which contacts the outer end of the trunnion in only a limited contact area. The thrust surface may be located adjacent the outer circumference of the center aperture in the thrust washer. The thrust surface contacts only that portion of the outer end of the trunnion which is adjacent the outer circumference of the lubricant passageway extending through each trunnion. In one embodiment, the inner surface is tapered outwardly such that the thrust surface is defined by the thickest portion of the tapered surface. In another embodiment, the inner surface includes a plurality of protuberances located around the circumference of the center aperture such that these protuberances define the thrust surface.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: March 10, 1998
    Assignee: Dana Corporation
    Inventor: James T. Reynolds
  • Patent number: 5068885
    Abstract: The invention relates to a rotary-anode X-ray tube comprising a sleeve bearing, notably a helical-groove bearing, for journalling the rotary anode in the axial direction, which bearing comprises at least two pairs of bearing surfaces for taking up axial forces acting in opposite directions, each pair comprising two bearing surfaces which are present on bearing portions which are rotatable with respect to one another and which bearing surfaces cooperate via a lubricant, the helical-groove bearing communicating with the vacuum space of the X-ray tube via at least opening. Because at the area between the pairs of bearing surfaces there is provided a lubricant reservoir which communicates with the lubricant in the pairs of bearing surfaces and in the stationary bearing portion there is provided a duct which connects the lubricant reservoir to the vacuum space of the X-ray tube, it is achieved that the bearing will not be damaged in the case of loss of lubricant.
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: November 26, 1991
    Assignee: U.S. Philips Corporation
    Inventor: Axel Vetter
  • Patent number: 4903533
    Abstract: A turbine flowmeter comprises an impeller which has a rotary shaft rotatable together with the impeller and is provided within a flow passage through which a fluid to be measured flows, a pair of bearing members for axially supporting the rotary shaft, an oil accumulating part for holding a lubricating oil therein, and an oil supplying part for supplying the lubricating oil in the oil accomulating part in small quantities to at least one of the bearing members. The oil supplying part comprises a capilary member.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: February 27, 1990
    Assignees: Osaka Gas Co., Ltd., Tokico Ltd.
    Inventors: Takashi Kato, Yutaka Morita, Takeshi Yamaguchi, Kazuo Tsuge, Kyoji Imamura, Yoshio Kawai, Hiroaki Hasegawa, Hiroyuki Amemori
  • Patent number: 4859088
    Abstract: A thrust bearing assembly including a tubular mount conformed to receive an axially loaded shaft, the shaft being formed as a cylindrical shank terminating in a circular cap receivable in the interior of the mount. A selected number of rings is then stacked onto the shank to transfer lateral loads to the mount with a complementary number of discs being inserted below the cap for taking out axial loads. Each of the discs, furthermore, include oppositely arced grooves on the faces thereof for dynamic pumping of lubricating oil conveyed through the shaft.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: August 22, 1989
    Inventor: Richard A. Fer
  • Patent number: 4695755
    Abstract: The armature of an automotive starter motor has a protective collar for its commutator. The collar has an annular disc body that is bonded to the rear wall of the commutator, and it has a projecting rim which overlays the marginal free ends of the bars of the commutator so as to restrain them from a tendency to peel or lift away under the strong forces developed as the armature is rotated in cranking a motor vehicle engine. The body of the collar also has a rearwardly extending hub provided with grease-filled cavities, whereby the hub serves as a lubricated thrust washer and spacer for the armature relative to the end frame of the starter's housing, as the armature rotates.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: September 22, 1987
    Inventor: Chester Brown
  • Patent number: 4643593
    Abstract: The rotor of a thrust bearing for the horizontal shaft of a centrifugal pump is installed in a housing which is mounted in an oil-containing vessel and has an inlet below and an outlet above the oil level. The peripheral surface of the rotor has a groove which receives a portion of an annular stator to form a suction channel which draws oil from the vessel through the inlet when the shaft is driven. The oil fills the housing and is returned into the supply of oil in the vessel by way of the outlet, a cooling unit and a filtering cartridge.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: February 17, 1987
    Assignee: Klein, Schanzlin & Becker Aktiengesellschaft
    Inventors: Karl Gaffal, Frank Etzold
  • Patent number: 4569601
    Abstract: In accordance with an illustrative embodiment of the present invention, a thrust bearing member is positioned between the rolling cutter or cone and the bearing pin of a rock bit and comprises wound wire such as a closed spiral coil spring that provides spaced-apart bearing surfaces with open areas therebetween. The flexibility of the spiral spring tends to spread the load between several bearing areas to thereby reduce concentrations of stress and the occurrence of localized high temperatures and wear, and the spacing of the bearing surfaces provides wear and contamination particle traps as well as lubricant reservoirs, to significantly increase the useful life of the bearing.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: February 11, 1986
    Assignee: Dresser Industries, Inc.
    Inventor: Rodolfo M. Ippolito
  • Patent number: 4385845
    Abstract: A highly reliable device for stopping the operation of a flywheel apparatus for storing electrical energy in the event of interruption of power supply includes a thrust plate 11 connected to the rotatory part of the apparatus, and having a lower surface defining a thrust bearing surface. A pressure receiving surface 26 facing the lower surface of the thrust plate, and defining a thrust bearing surface is provided with a plurality of radially extending grooves 27 each having at least one sidewall which defines an upwardly inclined land 28 as viewed in the direction of rotation of the rotatory part. Provided below the pressure receiving surface 26 is a cooling fluid passage 33 connected to an electromagnetic valve 35 adapted to open upon interruption of power supply to allow a cooling fluid to flow into the passage 33. The device further includes means for maintaining a hydraulic fluid between the thrust bearing surfaces during interruption of power supply.
    Type: Grant
    Filed: November 17, 1981
    Date of Patent: May 31, 1983
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Yoshinobu Hoshino
  • Patent number: 4371220
    Abstract: A self-lubricating plain bearing for a shaft has a bore in which a bearing sleeve is disposed for rotatably supporting the shaft. Disposed in the bore in a portion thereof which is further inward than the sleeve is a lubricant-impregnated porous member. The clearance between the shaft and the inside surface of the member is larger than the bearing clearance between the shaft and the bearing sleeve and lubricant is drawn by capillary action from the member into the clearance and then into the bearing clearance.
    Type: Grant
    Filed: January 13, 1981
    Date of Patent: February 1, 1983
    Inventor: Egon Brucher