Patents Examined by Alan B Waits
  • Patent number: 10844903
    Abstract: A spherical roller bearing includes at least one outer ring and one inner ring and at least one rolling element disposed between the at least one outer ring and the one inner ring. The outer ring is axially enlarged with respect to the inner ring in a one-sided manner on a load-zone side of the spherical roller bearing.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: November 24, 2020
    Assignee: Aktiebolaget SKF
    Inventor: Benjamin Michael
  • Patent number: 10830281
    Abstract: The method is used for uniforming temperature in a shaft supported by a fluid bearing during rotation of the shaft; a journal portion of the shaft is located inside the fluid bearing; at least one passage is provided inside the shaft at least along the journal portion so to cross it; at least one flow of heat-exchange fluid is established in the at least one passage; the method allows to overcome the problems due to the “Morton effect”. A bearing system implementing the method is advantageously used in a turbomachine.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: November 10, 2020
    Inventors: Daniele Panara, Leonardo Baldassarre, Mirko Libraschi, Antonio Pelagotti
  • Patent number: 10823227
    Abstract: A rotating machine includes a housing and a first bearing received in the housing. The rotating machine also includes a shaft supported by the first bearing. The shaft defines a central axis that extends in a longitudinal direction. The rotating machine also includes at least one duct radially interior to the outer diameter of the shaft. The duct includes an inlet port and a radial outlet port that are in fluid communication with one another. The inlet port is configured to receive air and the radial outlet port is configured to discharge the air. The rotating machine also includes an air mover longitudinally disposed between the first bearing and the inlet port of the duct. The air mover creates an area of air pressure at the radial outlet port that is less than an air pressure at the inlet port.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: November 3, 2020
    Inventors: Thomas E. Katcher, William Gademer, John Gregory Snelick
  • Patent number: 10808761
    Abstract: A rolling bearing includes an inner ring, an outer ring, and rolling elements interposed between the inner ring and the outer ring. A surface layer portion, beneath a raceway surface (10a), of a base material of a raceway ring (10) which is the inner ring or the outer ring, is a wear-resistant layer (13) which has a higher hardness than a residual portion (12), beneath the surface layer portion, of the base material, and includes a minute-recess-and-projection surface. An oxide film (14) is provided which has such a film thickness (t) as to fill recesses of the minute-recess-and-projection surface of the wear-resistant layer (13), and includes recesses and projections existing along the minute-recess-and-projection surface, and the oxide film (14) coats the surface of the wear-resistant layer (13). The oxide film (14) is made from a material more fragile than the wear-resistant layer (13) of the base material.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: October 20, 2020
    Inventors: Weida Yan, Kazumasa Seko, Michio Hori, Takashi Yamamoto, Naoya Hasegawa
  • Patent number: 10808760
    Abstract: An assembly for a rolling element bearing, the assembly including a first cage segment and a second cage segment which are releasably connectable to one another, and at least one rolling element. The assembly further comprises a cage pocket for receiving the at least one rolling element. The cage pocket is at least partly defined by a cage pocket wall of at least one of the first cage segment and the second cage segment. The assembly is such that, when the at least one rolling element is in the cage pocket, the at least one rolling element prevents the first cage segment and the second cage segment from being releasably disengaged. A rolling element bearing can incorporate such an assembly.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: October 20, 2020
    Assignee: Aktiebolaget SKF
    Inventor: Arne Lars Jonas Kullin
  • Patent number: 10808755
    Abstract: A multi-film oil damper suited for accommodating radial movement of a rotary shaft bearing relative to a bearing housing, the multi-film oil damper comprising: an annular damper cavity defined within the bearing housing between a radially outward wall and radially extending side walls; an inner damper ring; an outer damper ring disposed between the inner damper ring and the radially outward wall of the annular damper cavity; wherein the annular damper cavity has an oil inlet in communication with a source of pressurized oil; and wherein a radial thickness of the inner damper ring exceeds a radial thickness of the outer damper ring.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: October 20, 2020
    Inventors: Thomas Veitch, David Beamish
  • Patent number: 10808764
    Abstract: A bearing assembly engaged with an end of a rotatable shaft. The assembly includes a hub defining a first bore extending between a first opening at a first end of the hub and a second opening at a second end of the hub. A bearing sleeve engaged in the first bore defines a second bore. The shaft's end is inserted through a first opening in the second bore. A sealed bearing located between the bearing sleeve and the hub's interior surface enables relative rotation therebetween. A first sealing mechanism seals the first bore's first opening and a second sealing mechanism seals the second openings of both of the first and second bores. The first sealing mechanism includes an L-shaped ring circumscribing the bearing sleeve and a rubber sealing member. The second sealing mechanism includes a hemispherical region and flange secured to the hub by a retaining ring.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: October 20, 2020
    Assignee: G.B.G.I., Inc.
    Inventors: Marc T. Adams, Peter T. Casamento
  • Patent number: 10808751
    Abstract: A tilting-pad bearing includes: a tilting pad having a tilting surface; and a housing comprising a supporting surface supporting the tilting surface. One of the tilting surface and the supporting surface is configured as a cam profile surface so that the tilting pad is tilted smoothly in response to the rotor rotating.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: October 20, 2020
    Inventor: Seung Hoon Shin
  • Patent number: 10801550
    Abstract: An encoder system mounted on a large diameter bearing, the large diameter bearing having an inner ring and an outer ring, the encoder system providing a tensioning assembly mounted in a pre-machined portion of the inner ring, the tensioning assembly including a first tensioning part having a first machined recess and a first groove, and a second tensioning part having a second groove, the second tensioning part conforming in size and shape to the first recess and disposed within the first machined recess. The tensioning assembly is centered and fixed on to the inner ring. An encoder assembly mounted on the outer ring, the encoder assembly including a first encoder part fixed to the outer ring, and a second encoder part fixed to the first encoder part and aligned in front of the encoder band. A method of assembling an encoder system to a large diameter bearing is also provided.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: October 13, 2020
    Assignee: Aktiebolaget SKF
    Inventor: Vincent Bredoire
  • Patent number: 10780735
    Abstract: A hub unit that is to be installed on a vehicle is provided with: an outer ring having, on the inner circumferential surface, a first outer raceway surface and a second outer raceway surface that is disposed to the outside of the first outer raceway surface in the vehicle width direction when the hub unit is installed on the vehicle; an inner shaft that is disposed on the inside of the outer ring concentrically with the outer ring and on which a wheel is installed on the outer end in the vehicle width direction; and an inner ring that is press-fitted to the inner shaft on the inner end in the vehicle width direction.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: September 22, 2020
    Inventors: Yuya Inoue, Takaaki Onizuka, Toshihiro Hakata, Teruyuki Wakisaka, Takuya Toda
  • Patent number: 10781860
    Abstract: The invention relates to a self-aligning roller bearing, comprising a rotary outer ring exhibiting a spherical raceway, the bearing comprising first and second annular rows of rollers respectively associated with first and second rotary cages that hold the rollers in place. According to the invention, the first cage has an exterior surface equipped with at least one deflector for discharging lubricant towards a first side of the bearing, in a first axial direction extending from the second cage towards the first cage, this deflector extending, in a second axial direction that is the opposite of the first direction, beyond the rollers associated with the first cage and also beyond the first cage so as to cover part of the second cage.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: September 22, 2020
    Inventors: Xavier Paul Lucien Hert, Aldric Renaud Gabriel Marie Moreau De Lizoreux, Boris Pierre Marcel Morelli
  • Patent number: 10774875
    Abstract: A lubrication system includes a pair of mating surfaces subject to relative motion and a source of lubrication in communication with the mating surfaces. A microfluidic channel system including at least one diffuser element is disposed in an interface between the mating surfaces to create a coherent fluid film at the interface in response to the relative motion.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: September 15, 2020
    Assignee: National Oilwell Varco, L.P.
    Inventors: Hamid Sadabadi, Amir Sanati Nezhad, Masoud Kalantari, Nicholas Ryan Marchand
  • Patent number: 10767689
    Abstract: This bearing device (1) for vehicle wheels comprises: an inner undercut part (8) provided in a portion at which an inner rolling surface (3d) formed on the inner side of an inner member (3) and an inner flange surface (3m) of the inner rolling surface (3d) intersect; an outer undercut part (9) provided in a portion at which an inner rolling surface (3c) formed on the outer side of the inner member (3) and an outer flange surface (3n) of the inner rolling surface (3c) intersect; and a vehicle wheel installation flange (3e) provided at a portion adjacent to the inner rolling surface (3c) formed on the outer side of the inner member (3), wherein, when the radius of curvature of the inner undercut part (8) is Ri, and the radius of curvature of the outer undercut part (9) is Ro, the relationship of Ri<Ro is satisfied.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: September 8, 2020
    Inventor: Makoto Seki
  • Patent number: 10767700
    Abstract: A flanged inner ring for wheel hub bearings, the inner ring comprising a tubular body supporting the bearing, the body being coaxial with an axis (A), and a flange, which is transversal to the axis (A), the flange being provided with a plurality of threaded through holes that are distributed around the axis (A) and includes: —an outer annular mounting surface and an inner surface that is axially faced towards an outer ring of the bearing; the flange having a respective base axial thickness (SAF) and comprising for each threaded through hole, a respective radial arm which is arranged on the inner surface of the flange facing the outer ring; the inner ring being forged in one piece together with the flange and the radial arms. Between each pair of adjacent arms there is a flower-shaped sector with a chamfer made by forging along the outer surface thereof.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: September 8, 2020
    Assignee: Aktiebolaget SKF
    Inventor: Maurizio Bertola
  • Patent number: 10760614
    Abstract: In a bearing device, a squeeze film damper includes an annular oil chamber forming an oil film between an outer periphery of an outer race and an inner periphery of a bearing retaining member. A film thickness adjustment portion adjusting a film thickness of the oil film is provided in at least one location in a peripheral direction of the oil chamber. Therefore, it is possible, by changing a distribution in a peripheral direction of dynamic characteristics of the oil film of the squeeze film damper with a simple structure to thus freely adjust a forward mode tendency or a backward mode tendency for centrifugal whirling, to enhance damping performance of the squeeze film damper. Accordingly, centrifugal whirling of a rotating shaft is suppressed effectively by the squeeze film damper with a simple structure.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: September 1, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Shu Taguchi
  • 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: 10746224
    Abstract: Provided is a slide bearing of lower cost that is capable of preventing the intrusion of dust, muddy water, etc. and has good sliding performance. In a ring-shaped space (5) formed by assembling an upper case (2) with a lower case, a ring-shaped outer dust seal part (42), which bends with one end (420) contacting the upper case (2) and the other end (421) contacting the lower case, is disposed on the outside of a ring-shaped thrust bearing part (40), and the outer dust seal part (42) is connected to the thrust bearing part (40) by connecting parts (43) that extend radially outward from the outside of the thrust bearing part (40), integrating the two as a dust seal-integrated center plate (4). Disposed between the thrust bearing part (40) and the upper case (2) is a ring-shaped lubrication sheet (6), which has surfaces (62, 63) that slide on the mating surfaces facing same.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: August 18, 2020
    Inventors: Toshihiko Sekine, Tomohiro Yamada, Katsunori Saito, Yoshiteru Iagarashi
  • Patent number: 10746229
    Abstract: According to one embodiment of the present disclosure, a sealing device of a wheel bearing may be disposed axially outside of rolling elements and may be mounted between an outer ring and a hub. The sealing device of the wheel bearing may comprise an outer ring slinger mounted on the outer ring, a hub slinger mounted on the hub, and a deviation-preventing protrusion which protrudes from an outer circumferential surface of the hub to hold an axial inner end of the hub slinger when the hub slinger moves inward in an axial direction. The outer circumferential surface of the hub may meet the deviation-preventing protrusion at right angles.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: August 18, 2020
    Assignee: ILJIN GLOBAL CO., LTD.
    Inventor: Jong Keun Lim
  • Patent number: 10738830
    Abstract: Bearing assembly of large diameter or of the slewing type, including an inner ring and an outer ring, at least one sealing ring with an axis installed on one of the inner and outer rings, for sealing a gap between the inner and outer rings and comprising: a lip portion designed in rubbing contact with the other of the inner and outer rings, a root portion at least partly engaged with an interference fit inside a holding recess arranged on a stabilizing surface of the one of the inner and outer rings, the root portion having a main lip and at least one secondary lip, the lips applying a contact pressure inside the holding recess in order to anchor the root portion on the one of the inner and outer rings, characterized in that the holding recess comprises two blocking grooves inside which the main lip is engaged with a contact pressure.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: August 11, 2020
    Inventors: Bruno Capoldi, Siegfried Derrer
  • Patent number: 10731707
    Abstract: A sealed bearing module for a tidal turbine, the tidal turbine including a hub and at least one rotor blade, the sealed bearing module including an inner ring, and an outer ring, and a seal system configured to seal the bearing module. The outer ring includes axially extending bores configured to receive fasteners for attaching the outer ring directly to the hub, and the inner ring includes axially extending bores for attaching the inner ring directly or indirectly to the rotor blade.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: August 4, 2020
    Inventors: Michael Baumann, Matthias Hofmann