Radial Roller-thrust Roller Patents (Class 384/455)
  • Patent number: 11067120
    Abstract: A rolling bearing provides an inner ring and an outer ring concentrically about a rotation axis X-X? running in an axial direction, and at least first and second axial bearings each axially disposed between the inner ring and the outer ring and each having at least one row of rolling elements, the first and second axial bearings being spaced apart from each other in the axial direction. The rolling bearing further provides only one radial bearing radially disposed between the inner ring and the outer ring and having at least one row of rolling elements. The radial bearing is disposed between an outer raceway located on the inner ring and an inner raceway located on the outer ring.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: July 20, 2021
    Assignee: Aktiebolaget SKF
    Inventor: Damien Barciet
  • Patent number: 10823156
    Abstract: The present invention provides a segmented pitch ring for use in a blade pitch system of a wind turbine. The segmented pitch ring is formed of a plurality of segments manufactured by different processes. In particular, one or more of the segments are formed by a rolling process, and one or more of the segments are formed by a casting process. The segments are arc-shaped or include arc-shaped sections that in combination define a substantially circular circumference of the pitch ring.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: November 3, 2020
    Assignee: Vestas Wind Systems A/S
    Inventors: Michael Christensen, Simon Kabus, Erik Markussen, Jesper Lykkegaard Neubauer
  • Patent number: 10787195
    Abstract: An electric power steering system includes: a steered shaft, a housing containing the steered shaft therein in a movable manner; a ball screw nut engaged threadedly to the steered shaft via a plurality of balls and configured to move the steered shaft in an axial direction; a double row angular contact ball bearing configured to retain the ball screw nut and to support the retained ball screw nut rotatably relative to the housing; a wall portion placed at either side of the double row angular contact ball bearing in the axial direction of the steered shaft, the wall portion being formed integrally with the housing; and an elastic member provided between the wall portion and the outer ring portion and configured to retain the double row angular contact ball bearing to be elastically displaceable in the axial direction.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: September 29, 2020
    Assignee: JTEKT CORPORATION
    Inventors: Toshihiro Asakura, Hirotsugu Kusano, Hirokazu Tojo
  • Patent number: 10683891
    Abstract: A stacked thrust bearing arrangement including a central washer arranged between a first and second bearing assembly is disclosed. The central washer is axially positioned between a first inner bearing ring of the first bearing assembly, and a second inner bearing ring of the second bearing assembly. An inner sleeve defines a first retention flange adapted to engage a first cage of the first bearing assembly, and a second retention flange adapted to engage a second cage of the second bearing assembly.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: June 16, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Dennis Roffe, James Brown
  • Patent number: 10598159
    Abstract: In one aspect, a dual pitch bearing configuration for coupling a rotor blade to a hub of a wind turbine. The dual pitch bearing configuration including a first pitch bearing and at least one additional pitch bearing disposed axially a distance LB from the first pitch bearing. The dual pitch bearing configuration further including one or more spacers disposed between the first pitch bearing and the at least one additional pitch bearing and extending the distance LB. The dual pitch bearing disposed radially within one of a blade root of the rotor blade, a hub extension or a bearing housing and coupled thereto. The dual pitch bearing configuration minimizing moment loading on the first pitch bearing and the at least one additional pitch bearing. A wind turbine including the dual pitch bearing configuration is further disclosed.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: March 24, 2020
    Assignee: General Electric Company
    Inventors: Adam Daniel Minadeo, Norman Arnold Turnquist, Daniel Jason Erno, Fulton Jose Lopez, Bugra Han Ertas, Michael Colan Moscinski
  • Patent number: 10190626
    Abstract: A thrust roller bearing cage (11) a thrust roller bearing (20) and a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a radially outer area bent portion (41) formed by bending an area located radially outside the pockets (21) inward in a radial direction; and projecting portions (44) that are formed in a tip end of the radially outer area bent portion (41) and project inward in the radial direction so as to contact end faces (16) of the rollers (13) accommodated in the pockets. Radially outer edges (21a) of the pockets (21) are located radially outside base end parts (44a) of the projecting portions (44).
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: January 29, 2019
    Assignee: NTN CORPORATION
    Inventors: Kazuyuki Yamamoto, Hisataka Hasegawa
  • Patent number: 10125812
    Abstract: The invention relates to a rotary-table bearing assembly, including: a rotary-table bearing, which has an inner ring, an outer ring, and rolling elements arranged in one or more rows, which roll on the inner ring and on the outer ring; and in each case an assembly component having a clamping segment, to which assembly components the outer ring and the inner ring are connected. According to the invention, the clamping segment of at least one assembly component is designed radially elastic on the assembly component, and/or the outer ring and/or the inner ring has a radially elastic connecting segment, by which the particular ring is connected to the assembly component.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: November 13, 2018
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Jorg-Oliver Hestermann, Gunter Schmid, Jurgen Hilbinger
  • Patent number: 10072449
    Abstract: Provided is a roller, and more particularly, to a rotary shaft of the upper part of a rolling wheel, having an inclined surface formed along the circumference of an outer diametral surface thereof, is inserted into at least one coupling groove formed on a transfer bracket, a thrust member is provided at the upper part of the rotary shaft so as to allow a thrust load to be concentrated on the upper end of the rotary shaft or the thrust member, and a radial member is provided at the inner surface of the coupling groove and the rotary shaft positioned at the lower part of the thrust member, thereby supporting a radial load.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: September 11, 2018
    Inventor: Hyuk Soo Jang
  • Patent number: 10041533
    Abstract: A bearing providing at least two rings able to pivot relative to one another, at least one of the rings including at least two annular ring parts having annular radial surfaces axially opposite each other. The bearing further providing at least one annular shim disposed between the radial surfaces of the annular ring parts and including successive circumferential portions. Each circumferential portion of the shim has a plurality of nicks respectively traversed by axial elements. The nicks of each circumferential portion of the annular shim are shaped and oriented to permit the positioning between the annular ring parts and the removal of each circumferential portion by radial translation.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: August 7, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventor: Michel Nicolas
  • Patent number: 10030697
    Abstract: A ball ramp plate and a ball ramp assembly including the ball ramp plate are provided. The ball ramp plate comprises a stamped metal plate formed with ramped ball pockets on a first side at a ball ramp pitch radius and a thrust bearing support on a second side of the plate. The thrust bearing support has a first support surface at a first pitch radius greater than the ball ramp pitch radius and a second support surface at a second pitch radius less than the ball ramp pitch radius.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: July 24, 2018
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Stephen Carr, Shaun Tate
  • Patent number: 9909567
    Abstract: The invention relates to a rolling bearing arrangement (1, 26, 31, 34, 36, 37), preferably a large rolling bearing with a diameter of 0.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: March 6, 2018
    Assignee: IMO Holding GmbH
    Inventors: Hubertus Frank, Erich Russ, Volker Dietz
  • Patent number: 9739263
    Abstract: The invention is directed to a wind power plant having a rotor mounted rotatably about an axis directed approximately in the wind direction, and having at least two mutually concentric annular elements for connection to oppositely rotatable system components of the wind power plant, one of which comprises means for connection to the rotor of the wind power plant or to a drive shaft of a gearbox coupled thereto; at least one element having a freewheel characteristic is disposed between the two connection elements and together with them forms a freewheel, at least one connection element being provided with at least one integrated raceway for a row of rolling bodies rolling thereon.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: August 22, 2017
    Assignee: IMO Holding GmbH
    Inventor: Hubertus Frank
  • Patent number: 9657780
    Abstract: An axial needle roller bearing assembly is provided having first and second axial end washers, each with a radial body having a concave outer profile and a convex inner profile in radial cross-section and each including an axial flange on one of a radially inner or outer side. First and second intermediate washers having respective intermediate radial bodies with first and second axial sides are provided with the first axial sides defining first and second bearing races and the second axial sides defining contact surfaces for the respective first and second axial end washers. A cage and roller assembly is located between the first and second bearing races, and includes a cage with a plurality of radially extending needle roller pockets, and a plurality of needle rollers received in at least some of the pockets.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: May 23, 2017
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Clayton Brzezinski
  • Patent number: 9605709
    Abstract: Disclosed is a cylindrical roller bearing for absorbing axial and radial forces. The roller bearing includes a first bearing ring and a second bearing ring, which are arranged concentrically about an axis of rotation extending in an axial direction. The second bearing ring has a groove, which is open in a radial direction and in which a projection of the first bearing ring engages. The roller bearing further includes a first radial bearing row and two axial bearing rows spaced in the axial direction that are arranged between the projection and the groove, wherein the first radial bearing row supports the first bearing ring against the second bearing ring in a first radial direction. The roller bearing also includes a second radial bearing row that supports the first bearing ring against the second bearing ring in a second radial direction that is opposite to the first radial direction.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: March 28, 2017
    Assignee: THYSSENKRUPP ROTHE ERDE GMBH
    Inventors: Andreas Kaesler, Thomas Malzer
  • Patent number: 9581193
    Abstract: A combined axial and radial bearing assembly is provided, having a radial bearing including an outer ring having a constant outside diameter, and radially inwardly extending flanges located at axial ends thereof. A radial bearing cage having an axially extended rim on a first side, and radial rolling elements therein is located within the outer ring. An axial bearing is provided including an axial bearing ring having a thrust race, and an axially extending flange connected to a radially inner end thereof. The axially extending flange has an ID that is less than the OD of the radial bearing outer ring. An axial bearing cage with thrust rolling elements located in at least some of the pockets is also provided. The axially extending flange of the axial bearing is press fit on the OD of the radial bearing outer ring in a region aligned with the axially extended rim.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: February 28, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Clayton Brzezinski, Seth Claus, Dennis Roffe
  • Patent number: 9541132
    Abstract: A snap-fit box cage including a first and second ring is provided. The first ring includes a first radially outer flange, a first radially inner flange, and a first radial portion extending therebetween. At least one of the first radially inner flange or the first radially outer flange includes at least one retention projection. The second ring includes a second radially outer flange, a second radially inner flange, and a second radial portion extending therebetween. At least one of the second radially inner flange or the second radially outer flange includes at least one retention recess that is complementary to the retention projection. The first and second rings are matingly secured to one another by the at least one retention projection and the at least one retention recess resiliently engaging with each other, and the rings captively secure rollers installed in pockets formed on the rings.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: January 10, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: James Kevin Brown, Neil Hoan
  • Patent number: 9422976
    Abstract: An axial-radial roller-bearing assembly for mounting rotor blades on a wind-power plant has a first bearing ring forming a race and centered on a bearing axis and a second bearing ring forming another race coaxial to the race formed by the first bearing ring. A radial roller bearing with rollers as rolling elements is between the first and second bearing rings. First, second, third, and fourth axial roller bearings have rollers serving as rolling elements between the first and second bearing rings and axially spaced from one another. The radial roller bearing is axially between the second and third axial roller bearings.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: August 23, 2016
    Assignee: THYSSENKRUPP ROTHE ERDE GMBH
    Inventor: Thomas Handreck
  • Patent number: 9347485
    Abstract: The invention is directed to a device for rotatably coupling two coaxial connecting elements, at least one of which is configured as a circular ring, and each of which has at least one annular surface that faces the corresponding surface of the respective other connecting element but is spaced apart therefrom by a gap, such that they are rotatable in opposite directions about an imaginary axis (axis of rotation) at the center of the annular connecting element and approximately perpendicular to the ring plane, wherein disposed in the gap between the two connecting elements is a rotary joint, configured as a single- or multi-row rolling bearing, for absorbing axial and radial loads and tilting moments, wherein at least one annular connecting element comprises, on its surface facing the gap, a continuously circumferential, planar shoulder having an oblong or elongated cross section and extending away from the gap to a freely terminating, peripheral circumferential edge.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: May 24, 2016
    Assignee: IMO Holding GmbH
    Inventor: Hubertus Frank
  • Patent number: 9188155
    Abstract: A rotary connection for a work machine, such as a crane, includes a rotational axis, an inner bearing ring, an outer bearing ring and at least three bearing body ring arrangements arranged between the bearing rings with a plurality of respective bearing bodies. At least one of the bearing body ring arrangements is configured to at least partially withstand forces directed in the radial direction to the rotational axis. At least two of the bearing body ring arrangements are configured to at least partially withstand forces directed parallel to the rotational axis and are arranged adjacent to and spaced apart from one another along the rotational axis. The at least two bearing body ring arrangements are configured to at least partially withstand forces directed parallel to the rotational axis in each case establish a direction of action and are arranged spaced apart from one another along the direction of action.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: November 17, 2015
    Assignee: TEREX CRANES GERMANY GMBH
    Inventors: Alfons Weckbecker, Ralf Pein, Volker Noll, Frank Schnittker
  • Patent number: 9062661
    Abstract: A bearing arrangement for rotational mounting of machine and plant components, comprising a nose ring, a bearing ring and a retaining ring of a large rolling bearing serving as a main mounting of a rotor of a wind power installation, and further comprising a plurality of tapered-roller rolling bearing arrays, particularly at least two tapered-roller rolling element arrays, which roll circulatingly about a main axis of rotation about the axial direction, and further comprising at least one cylindrical roller array arranged perpendicularly to the tapered-roller rolling element arrays and operative to support radial force components, wherein the plurality of tapered-roller rolling bearing arrays for supporting all axial force components are arranged parallel to one another, and planes of the tapered-roller rolling element arrays in which the tapered-roller rolling element arrays rotate about the axial main axis upon rotational movement of the mounted part do not intersect.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: June 23, 2015
    Assignee: IMO Holding GmbH
    Inventor: Hubertus Frank
  • Publication number: 20150139759
    Abstract: A rotation mechanism includes a mandrel, a rotation axle, a needle roller bearing and an angular bearing. The mandrel includes a shaft portion, a first annular contact portion and a second annular contact portion. The shaft portion has an outer surface, and the first annular contact portion and the second annular contact portion are located on the outer surface and respectively surround the axis of the mandrel. The rotation axle includes an annular portion, a third annular contact portion and a fourth annular contact portion. The annular portion has a shaft hole and an inner surface forming the shaft hole. The third annular contact portion and the fourth annular contact portion are located on the inner surface, and the mandrel passes through the shaft hole. The needle roller bearing is in contact with the first annular contact portion and the third annular contact portion, and is located between them.
    Type: Application
    Filed: February 10, 2014
    Publication date: May 21, 2015
    Applicant: Industrial Technology Research Institute
    Inventors: Wei-Chu LIN, Mei-Chin CHOU, Yu-Shiang HUANG, Hsin-Chuan SU, Hsi-Hung HSIAO
  • Publication number: 20150043850
    Abstract: In a creep preventing rolling bearing apparatus 21, an inner ring 12 is provided with a first key groove 13 opened at an inner peripheral face 12i in an axial end portion 12t. The first key groove 13 is provided so as to have a predetermined length L in the axial direction from the axial end portion 12t at a position having a certain depth D from an outer peripheral face 12o in a radial direction. A rotation shaft 17 is provided with a second key groove 13? on an outer peripheral face 17o along an axial direction. The first key groove 13 and the second key groove 13? are aligned and a key 18 is inserted, whereby the first key groove 13 and the second key groove 13? are fixed at the same time.
    Type: Application
    Filed: July 26, 2012
    Publication date: February 12, 2015
    Applicant: NSK LTD.
    Inventor: Shogo Mochizuki
  • Patent number: 8950945
    Abstract: A roller bearing for a tunneller having an inner ring, an outer ring, two sets of rolling elements arranged between the tracks formed on the rings, the first set of rolling elements including at least one roller able to withstand axial stresses and the second set of rolling elements including an angular-contact roller that is able to withstand both radial and axial stresses, the inner and outer rings being concentric about an axis of rotation of the roller bearing. Each roller in the first set includes a first axis of revolution (Y1-Y1) inclined in relation to the axis of rotation (X-X) by a first angle (?1) of between 45° and 95° and each roller in the second set includes a second axis of revolution (Y2-Y2) inclined in relation to the axis of rotation (X-X) by a second angle (?2) of between 0° and 45°.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize
  • Publication number: 20150038279
    Abstract: A bearing assembly and a related power transmitting component. The bearing assembly includes a first bearing, which is an angular contact bearing, and a second bearing, which is a tapered roller bearing. The first bearing has a first inner bearing race, a first outer bearing race and a plurality of spherical bearing balls disposed between the first inner bearing race and the first outer bearing race. The second bearing assembly has a second inner bearing race, a second outer bearing race and a plurality of tapered bearing rolls disposed between the second inner bearing race and the second outer bearing race. One of the first inner and first outer bearing races is fixedly coupled to one of the second inner and second outer bearing races for axial and rotational movement therewith. The first and second bearings are configured to handle thrust in a common axial direction.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 5, 2015
    Applicant: American Axle & Manufacturing, Inc.
    Inventors: Gregory J. Hilker, William G. Hunt, Gregory E. Woodside, Douglas J. Chemelli
  • Publication number: 20150030453
    Abstract: The present invention relates to a bearing assembly for supporting a shaft having a toroidal roller bearing arrangement. The bearing assembly includes a first set of rolling elements formed of toroidal roller elements arranged in a first row and interposed between an inner ring providing a first inner raceway and an first outer ring providing a first outer raceway, and a thrust bearing arrangement having a second set of rolling elements arranged in a second row. The rolling elements are in contact with and arranged to cooperate with a second inner raceway and a second outer raceway for supporting axial loads and for restricting axial movement of the shaft in relation to the first outer ring. The present invention also relates to a method for manufacturing a bearing assembly for supporting a shaft.
    Type: Application
    Filed: February 18, 2013
    Publication date: January 29, 2015
    Inventor: Christian Zang
  • Publication number: 20150016762
    Abstract: The invention relates to a method for producing a rolling bearing cage for a rolling bearing comprising at least one row of rolling elements. In the method according to the invention, a ring or a ring element made of a metallic solid material is provided and shaped by a forming process and/or a cutting, material-removing process into an annular or segmented main body of the rolling bearing cage. The main body has openings for receiving a respective rolling element, the main body being heated to a temperature above a minimum coating temperature for thermal coating with a thermoplastic material powder, wherein the main body is then immersed in a fluidized bed containing the thermoplastic material powder, wherein thermoplastic material powder adheres to the main body, melts and forms a contiguous coating while the main body is present in the fluidized bed, and wherein, after the coating, the main body is removed from the fluidized bed.
    Type: Application
    Filed: February 27, 2013
    Publication date: January 15, 2015
    Applicant: THYSSENKRUPP ROTHE ERDE GMBH
    Inventors: Wolfgang Claus, Reinhard Juergens, Stefan Schnieder, Joerg Rollmann
  • Patent number: 8931959
    Abstract: The roller bearing comprises an inner ring, an outer ring, at least one row of rolling elements which are arranged between the rings in order to form an axial thrust which can transmit axial forces, and a row of rolling elements arranged between the rings in order to form a radial thrust which can transmit radial forces. The inner ring comprises an annular groove which extends towards the interior from an outer surface of the ring, and forms a raceway for the rolling elements of the radial thrust.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: January 13, 2015
    Assignee: Aktiebolaget SK
    Inventors: Jean-Baptiste Noirot, Cyril Bouron, Bruno Capoldi, Jean-Baptiste Magny, Pascal Ovize
  • Publication number: 20140355918
    Abstract: A rotary support, comprising: a bearing inner race; a bearing outer race including a plurality of axially disposed through holes; a first plurality of rolling elements installed between the bearing inner race and the bearing outer race, and arranged to retain the bearing inner race and the bearing outer race in rolling engagement; and an outer ring radially surrounding and fixed to an outer portion of the bearing inner race and disposed axially opposite to the bearing outer race; wherein the outer ring includes a plurality of axially penetrating mounting holes; and wherein the bearing outer race through holes are axially aligned with the outer ring mounting holes.
    Type: Application
    Filed: May 20, 2014
    Publication date: December 4, 2014
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventor: Jianchang Zhang
  • Patent number: 8845198
    Abstract: A transmission wheel arrangement includes a shaft and a transmission wheel having a hub and rotatably arranged on the shaft. An axial bearing and a radial bearing are arranged axially and radially respectively between the hub of the transmission wheel and the shaft.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: September 30, 2014
    Assignee: GM Global Technology Operations LLC
    Inventor: Erwin Wolf
  • Publication number: 20140219594
    Abstract: A combined load rolling bearing including a roller assembly with a first cage including a plurality of radial cylindrical rollers and a plurality of axial cylindrical rollers is provided. The radial cylindrical rollers are supported so that they can roll on a radially outer race of a first bearing ring and a radially inner race of a second bearing ring. The axial cylindrical rollers are supported so that they can roll on a first axial race of the first bearing ring and an intermediate axial ring. A needle roller assembly is supported between the intermediate axial ring and a second axial race of the second bearing ring. The needle roller assembly includes a second cage with a plurality of needle rollers and the needle roller assembly rotates at a speed differential between the radial cylindrical rollers and the axial cylindrical rollers.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 7, 2014
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventors: Brian LEE, James Kevin BROWN
  • Patent number: 8764300
    Abstract: A wind turbine rotor hub bearing where the series of mobile members include more than two annular series of such members whereof at least two have different median diameters which are arranged in more than two rows scaled along the bearing rotational axis, with two end rows each comprising a series of roller bearings having individually a rotational axis transversal to the axis and at least an intermediary row of mobile members comprising balls.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: July 1, 2014
    Assignee: Defontaine
    Inventors: Germain Errard, Eric Jacquemont, Jean-Michel Delacou
  • Publication number: 20140150586
    Abstract: A wave gear device (30) uses, as a bearing which supports a first rigid internally-toothed gear (31) and a flexible externally-toothed gear (33) so as to be capable of rotation relative to each other, a composite roller bearing (38) equipped with a first roller (53) and second roller (54) for thrust bearing use and a third roller (55) for radial bearing use. Compared to a cross roller bearing or an angular bearing, the composite roller bearing (38) can be implemented as a highly rigid bearing in a small installation space. The first rigid internally-toothed gear (31) and the inner ring portion (51) of the composite roller bearing (38) are formed integrally as a single component, so an attachment part for connecting these members is not necessary. A highly rigid, flat wave gear device can be achieved.
    Type: Application
    Filed: July 29, 2011
    Publication date: June 5, 2014
    Applicant: HARMONIC DRIVE SYSTEMS INC.
    Inventor: Satoru Kanai
  • Patent number: 8662474
    Abstract: Embodiments of a combination bearing are provided, as are embodiments of a valve assembly including a combination bearing. In one embodiment, the valve assembly includes a flowbody having a flow passage therethrough, a drive shaft rotatably mounted within the flowbody, a valve element mounted to the drive shaft and positioned within the flow passage, and a combination bearing coupled between the flowbody and the drive shaft. The combination bearing comprises an integral radial load/thrust ring coupled to the drive shaft, and a thrust washer substantially adjacent the integral radial load/thrust ring, as taken along the longitudinal axis of the combination bearing. An outer radial ring circumscribes the integral thrust/radial load ring. A first plurality of rolling elements is captured between the thrust washer and the integral radial load/thrust ring, and a second plurality of rolling elements is captured between the outer radial ring and the integral radial load/thrust ring.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: March 4, 2014
    Assignee: Honeywell International Inc.
    Inventors: Chris Schlarman, Brent Bristol
  • Publication number: 20140010660
    Abstract: The invention relates to an axial-radial rolling contact bearing, in particular for supporting rotor blades (2) on a wind turbine (1), comprising a first bearing ring (7) and a second bearing ring (8), which form an inner ring and an outer ring, and comprising a radial rolling contact bearing row (4) and a plurality of axial rolling contact bearing rows between the first bearing ring (7) and the second bearing ring (8). According to the invention, at least four axial rolling contact bearing rows (5a, 5b, 5c, 5d) which are arranged at a distance from each other in the axial direction (x) are provided, said radial rolling contact bearing row (4) being arranged between the second axial rolling contact bearing row (5b) and the third axial rolling contact bearing row (5c) in the axial direction (x).
    Type: Application
    Filed: February 16, 2012
    Publication date: January 9, 2014
    Inventor: Thomas Handreck
  • Patent number: 8540092
    Abstract: This invention relates to a hoisting crane comprising a column, a jib and a jib connection member which is disposed on the column and to which the jib is connected pivotably. The crane further comprises an annular bearing structure extending around the column guiding and carrying the jib connection member rotatable about the column. The annular bearing structure comprises one or more column bearing parts connected to the column, comprising column bearing surfaces associated with the vertical column and one or more jib bearing parts connected to the jib connection member, comprising jib bearing surfaces associated with the jib connection member. A first column bearing surface is oriented substantially vertically and is arranged in a radial direction more inwards than a first jib bearing surface arranged opposite the first column bearing surfaces, to support radially inwards directed horizontal loads from the jib connection member to the column.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: September 24, 2013
    Assignee: Itrec B.V.
    Inventors: Joop Roodenburg, Gerrit Van Wijk, Adriaan Jan Rodenburg
  • Patent number: 8523453
    Abstract: An axial radial bearing for a rotor shaft of a wind power installation, which has a vertical circular outer disk, inner ring arranged coaxially to the outer disk, and two circular shaft washers axially arranged on both sides of the outer disk. At least one row of rolling bodies, held at equal distances by a bearing cage, extends between the shaft washers and outer disk, forming the rolling bearings for receiving axial forces, while at least one other row of rolling bodies, optionally held at equal distances by another bearing cage, is arranged between the outer disk and inner ring, forming a third rolling bearing for receiving radial forces. The two rolling bearings for receiving radial forces are formed by two tapered roller bearings oriented towards the longitudinal axis of the bearing by the small front sides, or by a double-row angular ball bearing or by two axial ball bearings.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 3, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Tim Loeschner, Rudolf Zeidlhack
  • Publication number: 20130084034
    Abstract: A bearing assembly that includes both radial and axial roller elements. The bearing assembly can be used in applications requiring a low friction bearing requiring high radial and axial load carrying characteristics. The bearing assembly has an inner ring with a radially outwardly extending rim, an outer ring with a radially inwardly extending rim, radial and axial rollers, and cage segments arranged between the inner and outer ring. The axial rollers are arranged in the cage segments to form axial roller assemblies and the radial rollers are interdisposed between the axial roller assemblies with the radial rollers and the axial rollers being fully encompassed within the inner ring and the outer ring.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 4, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Marion Jack INCE, Joseph T. GRIFFIN, Charles SCHWAB
  • Patent number: 8408805
    Abstract: A rolling bearing embodied as a radial-axial rolling bearing which has a bearing sleeve in which rolling bodies designed for absorbing axial forces are arranged in pockets of an axial cage. The axial cage has, on its inner side, a centering bevel which is produced by deformation of the axial cage.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: April 2, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Manfred Winkler, Daniel Schneider
  • Patent number: 8262549
    Abstract: A tapered roller thrust bearing is disposed in each of both sides in an axial direction of a cylindrical roller bearing with aligning housing ring which is provided with an inner ring, an outer ring, cylindrical rollers and an aligning housing ring. The tapered roller thrust bearing is constituted by disposing tapered rollers between a first raceway surface which is an outer side face in the axial direction of the outer ring and a second raceway surface of a side raceway ring disposed in an outer side in the axial direction of the outer ring. An intersection of lines extended from generatrices of each of the tapered rollers which are in contact with the first raceway surface and the second raceway surface, and an intersection of lines extended from the first raceway surface and the second raceway surface are disposed on a curvature center of the aligning sliding surface.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: September 11, 2012
    Assignee: JTekt Corporation
    Inventor: Takeharu Uranishi
  • Patent number: 8235597
    Abstract: A combined radial-axial rolling bearing for rotatably mounting a rotary body in the region of a diameter step. The rolling bearing has a radial bearing unit which is assigned to a circumferential surface of the rotary body and which at least has a radial bearing ring, and an axial bearing unit which is assigned to an axial surface of the rotary body and which at least has an axial bearing ring. To mount the rotary body radially in the region of the larger diameter, the radial bearing unit is assigned to a circumferential surface which has the larger diameter. The radially outer rim of the axial bearing ring is latched to a rim of the radial bearing ring which faces toward the radially outer rim, such that the two bearing rings form a structural unit which can be assembled in one work step, but otherwise remain functionally separate.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: August 7, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Georg Draser
  • Publication number: 20120076655
    Abstract: A three row roller bearing, in particular for a wind turbine, is provided. The three row roller bearing includes a row of radial rollers receiving radial load and a pair of rows of axial rollers receiving axial load. The axial rollers are tapered. A wind turbine using the three row roller bearing is also provided.
    Type: Application
    Filed: August 23, 2011
    Publication date: March 29, 2012
    Inventor: Henrik Stiesdal
  • Patent number: 8002472
    Abstract: A slew bearing system includes a first bearing ring and a second bearing ring concentrically positioned relative to each other forming at least upper and lower raceways there between, a plurality of bearing rollers positioned in each raceway between the first bearing ring and the second bearing ring, a plurality of delivery nozzles capable of delivering an air and oil mixture into the raceways adjacent the upper raceway, passages capable of fluidly communicating the air and oil mixture through the raceways and collecting some oil from the mixture adjacent the lower raceway, seals capable of regulating air flow through the passages and inhibiting outflow of oil from the raceways, and at least one exit port capable of outward flow of air and oil from the raceways adjacent the lower raceway.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: August 23, 2011
    Assignee: Nucor Corporation
    Inventors: Jeff Craig, Jeff Blankenship, Cory Mecham, Randall J. McNeil
  • Patent number: 7993174
    Abstract: A torque transmission device for a ship for optionally transmitting a drive torque from a main drive or from an auxiliary drive to a propeller shaft of the ship, with a gear unit which can be driven by the main drive and which can be connected to the propeller shaft by a first clutch, and with a second clutch by which the auxiliary drive can be connected to the propeller shaft. The gear unit is received in a gear unit housing, the first clutch and/or second clutch are/is received in a clutch housing that is separate from the gear unit housing, and the first clutch, the second clutch and/or the auxiliary drive are arranged on the side of the gear unit remote of a propeller.
    Type: Grant
    Filed: January 19, 2009
    Date of Patent: August 9, 2011
    Assignee: Renk Aktiengesellschaft
    Inventors: Hartmut Hultsch, Ingo Sommer
  • Patent number: 7963703
    Abstract: A thrust roller bearing including: a pair of races each of which has an annular plate; a cage interposed between the pair of races, formed by a single annular plate including a bent portion bent in an intermediate region in a radial direction of the cage such that a plurality of projecting portions to project in a thickness direction of the cage are formed on a first side and a second side of the cage, and a plurality of pockets stamped out in the thickness direction at predetermined intervals in a circumferential direction of the cage; and a plurality of rollers received respectively in the pockets. At least two projecting portions are formed on each of the first side and the second side of the cage; and a plurality of race-contacting projection portions are arranged on a surface of at least one of the two projecting portions on at least one of the first side and the second side of the cage at predetermined intervals in the circumferential direction of the cage.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: June 21, 2011
    Assignee: JTEKT Corporation
    Inventors: Wataru Takamizawa, Hiroshi Sato, Kanji Kawasaki, Masaki Toyama
  • Patent number: 7780409
    Abstract: Rotor apparatus and methods for vertical lift aircraft are disclosed. In one embodiment, a bearing assembly adapted for rotatably coupling a rotor blade to a support member includes an inner housing annularly disposed about a portion of the support member, an outer housing annularly disposed about at least part of the inner housing and is rotatably coupled to the inner housing by an annular bearing device, and a flexible member adapted to be coupled to the support member and including an engagement portion adapted to engage the outer housing and to at least partially relax a side force exerted on the annular bearing device by a bending of at least one of the rotor blade and the support member.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: August 24, 2010
    Assignee: The Boeing Company
    Inventor: Max U. Kismarton
  • Patent number: 7771127
    Abstract: Bearing assembly (1) for supporting a transmission shaft (2) in a housing (3), comprising an axially non-locating bearing (5) and a pair of angular contact bearings (7,8) which locate the shaft (2) against movement in axial direction (AA?), whereby the shaft (2) is subjected to radial and/or axial load forces (Frad,Fax), characterized in that the housing (2) is adapted in order to obtain the desired stiffness for each of the two angular contact bearings (7,8), whereby a load sharing between said two bearings (7,8) is induced.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: August 10, 2010
    Assignee: Hansen Transmissions International
    Inventors: Warren Smook, Andy Maes
  • Patent number: 7677041
    Abstract: Bearing systems for high speed rotating shafts, such as turbocharger shafts, include a first ball bearing in one end of an elongated cylinder capable of carrying axial thrust in both directions and a second ball bearing in the opposite end of the elongated cylinder with its outer race slideably mounted in the cylinder against the biasing force of a preload spring. The second ball bearing is free to move axially with the shaft upon axial expansion of the shaft when exposed to high temperature. The inner races of the ball bearings are clamped to and rotate with the shaft as part of the rotating assembly.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: March 16, 2010
    Inventor: William E. Woollenweber
  • Patent number: 7637664
    Abstract: A composite roll bearing (1), comprising an outer ring (2) and an annular inner ring (3) of groove shape in cross section having first, second, and third receiving surfaces (3a, 3b, 3c) facing the both end face inner peripheral portions (2a, 2b) and the circular inner peripheral surface (2c) of the outer ring (2) at specified intervals. A plurality of rollers (4) for thrust bearing are installed between one end face portion (2a) of the outer ring (2) and the first receiving surface (3a) of the inner ring (3) and between the other end face (2b) of the outer ring (2) and the second receiving surface (3b) of the inner ring (3). A plurality of rollers (5) for radial bearing are installed between the circular inner peripheral surface (2c) of the outer ring (2) and the third receiving surface (3c) of the inner ring (3). The rollers (5) are restricted to move in a thrust direction by retainer portions (8a, 8a) formed at the inner ends of retainers (6, 7) for the rollers (4) for thrust bearing.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: December 29, 2009
    Assignee: Harmonic Drive Systems, Inc.
    Inventors: Yoshihide Kiyosawa, Harushige Aoyagi, Hiroki Hanaoka
  • Publication number: 20090257697
    Abstract: A bearing with at least one row of rolling elements, where at least one of the at least one row of rolling elements includes a plurality of first rolling elements adapted for substantially transferring axial forces, and a plurality of second rolling elements adapted for substantially transferring radial forces. To minimize friction, at least one of the at least one row of rolling elements includes a mechanism for separating rolling elements, where the mechanism for separating rolling elements includes one or more cages for retaining the rolling elements, where the one or more cages include a pocket adapted for allowing the rolling element to be displaced in the longitudinal direction of the row of elements. A method for transferring forces through a bearing of a wind turbine is also contemplated.
    Type: Application
    Filed: June 17, 2009
    Publication date: October 15, 2009
    Inventor: Jesper Lykkegaard Andersen
  • Patent number: 7575377
    Abstract: A combined radial and axial bearing is defined by the fact that the bearing ring (1) of the radial bearing is held at an axial end by a mounting bore in the runner plate (2) of the axial bearing, and the positively locking engagement is brought about by means of a ring (3) which is arranged between the bearing ring (1) and runner plate and is configured in such a way that the bearing ring (1) and runner plates (2) are prevented from rotating with respect to one another in the circumferential direction but limited axial displacement is possible.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: August 18, 2009
    Assignee: Ina-Schaeffler KG
    Inventors: Matthias Fick, Norbert Radinger