Patents Examined by Marcus Charles
  • Half thrust bearing for crankshaft of internal combustion engine
    Patent number: 11035408
    Abstract: A half thrust bearing for a crankshaft includes a back metal layer defining a first surface and a second surface, and a bearing alloy layer on the first surface to form a slide surface, and thrust relieves formed adjacent to both circumferential end surfaces and having a thrust relief surface consisting of the bearing alloy layer. Each circumferential end surface of the back metal layer includes an exposed end surface adjacent to the second surface, and a transition surface adjacent to the first surface. The bearing alloy layer further includes an extension portion covering the transition surface and having extension end surface adjacent to the exposed end surface, the extension end surface and the exposed end surface extending at least partly in the same plane.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: June 15, 2021
    Assignee: DAIDO METAL COMPANY LTD.
    Inventor: Shiho Goto
  • Slide unit
    Patent number: 11028876
    Abstract: A slide unit includes a fixed rail fixed to a main body, and provided with a first accommodation space, a movable rail connected to a drawer body to allow the drawer body to be pulled out from and pushed into the main body, provided with a second accommodation space, and configured to be movable with respect to the fixed rail, an inner rail configured such that a first end thereof is inserted in the first accommodation space and a second end thereof is inserted in the second accommodation space, so as to allow the movable rail to be slidable with respect to the fixed rail, and a plurality of slide balls inserted in the first accommodation space to be disposed between the fixed rail and the inner rail, and inserted in the second accommodation space to be disposed between the movable rail and the inner rail.
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: June 8, 2021
    Assignee: SEGOS CO., LTD.
    Inventors: Doo Myun Lee, Sung Joon Kang, Duc Hoi Kim, In Suk Ra, Jung Kyu Lim, Sung Woo Kim, Jae Hyuk Lim
  • Lubricant-impregnated bushing for impact tool
    Patent number: 11027404
    Abstract: A power tool includes a housing having a motor housing portion and a front casing coupled to the motor housing portion. The power tool also includes an electric motor positioned within the motor housing portion, a drive assembly having an output shaft to which a tool element for performing work on a workpiece is attachable, and a powdered metal bushing disposed within the front casing that rotatably supports the output shaft.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: June 8, 2021
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Peter Malak, Michael R. Sande, Ryan Allen Dedrickson, Guang Hu, Fan Bin Zeng, Wei Chao Xu, Qiao Cai
  • Flanged integral piston bearing
    Patent number: 11021994
    Abstract: A method of operating a gas turbine engine of a multi-engine aircraft is disclosed, where the gas turbine engine has an engine shaft mounted for rotation in a bearing of a bearing assembly. The method comprises limiting motive power supplied to the aircraft by the gas turbine engine by operating the gas turbine engine in a standby mode; and when the gas turbine engine is operating in the standby mode, using an oil piston integrated in the bearing supporting the engine shaft of the gas turbine engine to generate an axial preload force on the bearing.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: June 1, 2021
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Simon Cartier
  • Sealing device and rolling bearing device
    Patent number: 11022178
    Abstract: A sealing device includes a seal member and a slinger. The slinger has a slinger fixing part, a first radial part, a first axial part, a second radial part, and a second axial part facing a seal fixing part of the seal member in a radial direction across a first clearance. The seal member has a large-diameter part facing, in an axial direction, an end of the second axial part on the other side in an axial direction across a second clearance. An outer circumferential surface of the large-diameter part and an outer circumferential surface of the second axial part are included in a flow passage surface of a continuous outside flow passage that extends in a straight line along the axial direction. The first clearance and the second clearance communicate with each other, and the sealing device has a labyrinth clearance including the first clearance and the second clearance.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: June 1, 2021
    Assignee: JTEKT CORPORATION
    Inventors: Takafumi Uemoto, Yuya Yamamoto, Takuya Toda, Suguru Nakajima
  • Rolling bearing device and assembling method for the same
    Patent number: 11022172
    Abstract: A rolling bearing device includes a rotary shaft; a housing; a pair of rolling bearings; an outer ring spacer; an elastic member provided in a bottom side of the housing, the bottom side of the housing being a second axial side of the housing, and the elastic member being configured to urge the rolling bearings, the outer ring spacer, and the rotary shaft toward a first axial side; and a retaining ring that is fitted into a circumferential groove provided on an inner periphery in the first axial side of the housing, the retaining ring being in axial contact with the outer ring of the rolling bearing located on the first axial side, and the retaining ring including at least three arc members arranged in a circumferential direction.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: June 1, 2021
    Assignee: JTEKT CORPORATION
    Inventors: Yui Tanaka, Kazuhiro Kimura, Masaaki Ohtsuki
  • Telescopic rail
    Patent number: 11019926
    Abstract: The present invention shows a telescopic rail having at least one inner, middle, and outer rail element, wherein the inner and outer rail elements are each longitudinally displaceably supported at the middle rail element over rolling members that are guided in a rolling member cage. Provision is made in accordance with a first aspect that the rail elements are mechanically force-coupled via a rail synchronization arrangement such that on a longitudinal displacement of the outer rail element with respect to the inner rail element, the middle rail element is longitudinally displaced with respect to both the inner rail element and the outer rail element.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: June 1, 2021
    Assignee: Liebherr-Verzahntechnik GmbH
    Inventors: Thomas Mattern, Markus Zollitsch, Florian Hoessle
  • Spiral groove bearing assembly with minimized deflection
    Patent number: 11017976
    Abstract: A liquid metal or spiral groove bearing structure for an x-ray tube and associated process for manufacturing the bearing structure is provided in which journal bearing sleeve is formed with a number of structures thereon that function to dissipate heat transmitted to the sleeve during operation of the bearing assembly within the x-ray tube to minimize thermal deformation of the sleeve, thereby minimizing gap size alteration within the bearing assembly. The structures formed within the sleeve are slots disposed within the section of the sleeve in which the highest temperature gradients develop. The slots enable an increase in thermal conductance away from the sleeve while minimizing the stresses created from the deformation of the portion(s) of the sleeve between the slots.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: May 25, 2021
    Assignee: General Electric Company
    Inventors: Ian Strider Hunt, Kevin Shane Kruse
  • Bearing apparatus including tilting pads
    Patent number: 11015646
    Abstract: Tilting pad bearing assemblies and apparatuses are disclosed herein. The disclosed tilting pad bearing assemblies and apparatuses may be employed in downhole motors of a subterranean drilling system or other mechanical systems. In an embodiment, a bearing assembly or apparatus includes a support ring and a plurality of tilting pads. Each tilting pad is tilted and/or tiltably secured relative to the support ring. In some embodiments, one or more of the tilting pads include a plurality of superhard bearing segments assembled to form a superhard bearing surface. One or more seams may be positioned between adjacent superhard bearing segments of the superhard bearing segments. In other embodiments, one or more of the tilting pads may include at least one or only one superhard bearing segment, such as a polycrystalline diamond bearing segment.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: May 25, 2021
    Assignee: US Synthetic Corportation
    Inventors: Craig H. Cooley, Timothy N. Sexton
  • Bearing assemblies including thick superhard tables and/or selected exposures, bearing apparatuses, and methods of use
    Patent number: 11015649
    Abstract: Embodiments of the invention are directed to bearing assemblies configured to effectively provide heat dissipation for bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating such bearing assemblies and apparatuses. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed about an axis. Each superhard bearing element of the plurality of superhard bearing elements has a superhard table including a superhard surface. The bearing assembly includes a support ring structure coupled to the plurality of superhard bearing elements. One or more of the superhard bearing elements includes a superhard table, which may improve heat transfer from such superhard bearing elements.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: May 25, 2021
    Assignee: US SYNTHETIC CORPORATION
    Inventors: Jair Jahaziel Gonzalez, Timothy N. Sexton
  • Two hybrid ball bearings and a compressor bearing arrangement
    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
  • Inter-shaft bearing arrangement
    Patent number: 10975726
    Abstract: A sleeve is provided for supplying lubricant to an inter-shaft bearing mounted between co-axially mounted inner and outer shafts of a gas turbine engine. The sleeve has a sleeve annular outer surface and a sleeve annular inner surface. At least one lubricant supply connecting member extends from the sleeve outer surface for connection to a lubricant supply. At least one sleeve channel fluidly links the sleeve annular inner surface to the lubricant supply connecting member.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: April 13, 2021
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Ian A. MacFarlane
  • Method and device for monitoring a bearing clearance of roller bearings
    Patent number: 10975908
    Abstract: In the methods for monitoring a bearing clearance of a roller bearing (4), in particular the bearing clearance of a main bearing of a wind turbine, within the scope of a first measuring series using at least one distance sensor (18), a distance (a, a1, a2) between a rotating part (12) and a stationary part (14) is respectively sensed in at least two different recurring load states (L1, L2), and a difference (?a) between the measured distances (a1, a2) is determined. At a later time the distance measurements are repeated in the same at least two recurring load states (L1, L2) within the scope of a second measuring series. A change in the bearing clearance is inferred on the basis of the changes in the distance difference (?a) within the scope of condition monitoring.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: April 13, 2021
    Assignee: Schaeffler Monitoring Services GmbH
    Inventor: Marc Reichhart
  • Method of determining wear in a bearing surface
    Patent number: 10968957
    Abstract: A method of determining an amount of wear in a spherical working surface of a bearing ring of a spherical plain bearing, the method including providing a reference groove of predetermined depth in an unworn working surface, using the reference groove and axial end faces of the bearing ring as reference surfaces for centering and aligning a measuring tool. The tool having a first surface, and a protrusion that extends from the first surface in radial direction and is adapted to fit into the reference groove and two or more radial openings that extend from a second surface of the tool. Determining the amount of wear by measuring the radial distance to the spherical working surface through each of the radial openings and comparing the measured value with a reference value measured using the tool for an unworn working surface comprising a reference groove of the same predetermined depth.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: April 6, 2021
    Inventors: Arnaud Turmeau, Camille Dayot
  • Air bearing
    Patent number: 10962053
    Abstract: An air bearing includes: a main body part having a bearing surface facing a guide surface; a flow path part provided in the main body part; an air film forming part that supplies compressed air flowing through the flow path part to the guide surface to form an air film; a negative pressure generating part that sucks air between the bearing surface and the guide surface, the negative pressure generating part being provided in the flow path part; a discharge path in communication with the flow path part; and a flow rate adjusting part that adjusts a flow rate of air flowing from the flow path part to the discharge path in accordance with a compressed air pressure corresponding to a load applied to the main body part.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: March 30, 2021
    Assignee: MITUTOYO CORPORATION
    Inventors: Hisayoshi Sakai, Kenji Ueda
  • Bearing with an eccentric seal groove
    Patent number: 10962059
    Abstract: A pump bearing for use in a gear pump including a top face, a side face perimetrically surrounding the top face, a bottom face opposed to the top face, a first bearing bore projecting from the top face to the bottom face defining an axis and configured to contain a drive-side shaft, and a groove within the side face located between the top face and the bottom face a variable depth in a direction perpendicular to the axis configured to a receive seal.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: March 30, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Zachary Allen Ray Le Duc, David Wakefield, Toby Chris Whitehead
  • Air blower for vehicle
    Patent number: 10962050
    Abstract: A vehicle air compressor including a shaft provided with an impeller disposed at one side thereof and a runner disposed at the other side thereof, a motor configured to rotate the shaft, a trust bearing which supports the shaft in a longitudinal direction of the shaft and of which a surface is disposed adjacent to a surface of the runner, wherein a cooling hole for cooling air between the trust bearing and the runner is disposed in the trust bearing.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: March 30, 2021
    Assignee: Hanon Systems
    Inventors: Jong Sung Lee, Hyun Chil Kim, Gun Woong Park, Chi Yong Park, Hyun Sup Yang, Kyu Sung Choi
  • Gas dynamic pressure bearing, motor, and blower
    Patent number: 10962018
    Abstract: A gas dynamic pressure bearing includes a shaft centered on a central axis extending in an up-down direction, and a sleeve that faces at least a portion of the shaft in a radial direction. The portion in which the sleeve and the shaft face each other in the radial direction includes a first dynamic pressure portion at each of both ends in the axial direction, and a second dynamic pressure portion between the first dynamic pressure portions. In the first dynamic pressure portion, one of the sleeve and the shaft includes dynamic pressure grooves arranged in a circumferential direction. A sum of center angles of groove widths of the dynamic pressure grooves in a cross-section cut along a plane orthogonal to the central axis is about 144° or more and about 216° or less.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: March 30, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Kazuhiko Fukushima, Takehito Tamaoka
  • Control tube bearing assembly
    Patent number: 10941564
    Abstract: Disclosed herein is a control tube bearing assembly comprising in one example a main body having an outer surface, a longitudinal axis, a radial axis; and an actuator sleeve radially exterior of the main body longitudinally repositionable thereto. The actuator sleeve in use is grasped by a user and repositioned relative to the main body so as to actuate tape dispensing, mastic dispensing, creasing components, and/or tape cutting components or a taper as desired.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: March 9, 2021
    Inventor: Donald Ray Burns
  • High-speed bearing
    Patent number: 10941811
    Abstract: A roller bearing includes a first race, a second race, and a cage disposed between the first and second races. The cage has an inner rim and a plurality of webs extending radially outboard from the inner rim and being circumferentially arranged around the inner rim to be spaced apart to define pockets. The webs have flanges that extend axially. Portions of the inner rim form inner guide surfaces of the pockets. The cage further includes a wavy outer rim circumscribing the inner rim. The outer rim has radially outer portions attached to the flanges and radially inner portions forming outer guide surfaces of the pockets. The outer rim and the flanges cooperate to define cutouts interleaved with the webs. Cylindrical roller elements are disposed in the pockets between the first and second races and have first ends adjacent the inner guide surfaces and second ends adjacent the outer guide surfaces.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: March 9, 2021
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: James Brown, Alicia Vidal Ortiz