Cage Structure Patents (Class 384/623)
  • Patent number: 11162534
    Abstract: A thrust bearing having an inner cage having inner cage pockets, with inner rollers in the inner cage pockets, and a first outer cage having a larger diameter than the inner cage and having first outer cage pockets, with first outer rollers in the first outer cage pockets. The inner cage and the first outer cage are axially and radially aligned. A radially extending rim is provided on one circumferential side of one of the inner cage or the first outer cage that faces a facing circumferential side of the other of the inner cage or the first outer cage. First and second radially extending side tabs are provided on the facing circumferential side of the other of the inner cage or the first outer cage that define a circumferentially extending channel therebetween that receives the radially extending rim to connect the cages together.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: November 2, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: James Kevin Brown, Alicia Vidal Ortiz, Benjamin Kanda
  • Patent number: 11149794
    Abstract: A sheet metal bearing cage segment includes a first sheet metal ring section, at least one second sheet metal ring section, and a plurality of bridges connecting the first ring section and the at least one second ring section to each other, adjacent pairs of the bridges forming pockets configured to receive at least one rolling element. At least one edge of the first ring section and/or at least one edge of the at least one second ring section and/or of one of the bridges is at least partially formed by laser cutting. Also a method of forming a sheet metal bearing cage at least partially by laser cutting.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: October 19, 2021
    Assignee: AKTIEBOLAGET SKF
    Inventors: Hans-Juergen Friedrich, Norbert Huhn, Thomas Kettner, Manfred Mattes, Harald Metz, Achim Mueller, Alfred Radina, Jonas Schierling, Maximilian Soellner, Markus Volkmuth
  • Patent number: 11149787
    Abstract: A thrust roller bearing includes a plurality of rollers and a cage including a plurality of cage pockets for housing the rollers. The rollers each include a cylindrical portion, an outer crowning portion, and an inner crowning portion. The cage pockets each include an outer surface, an inner surface facing a second end surface of the roller, and a pair of side surfaces facing an outer peripheral surface of the roller. The side surfaces each include a recessed surface that is not contactable with the roller, and flat surfaces that are provided on the outer side in the radial direction and on the inner side in the radial direction, respectively, and are contactable with the roller. A first dimension is larger than a second dimension.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: October 19, 2021
    Assignee: JTEKT CORPORATION
    Inventors: Yuki Shishihara, Shigeo Kamamoto, Junji Murata
  • 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
  • Patent number: 10844907
    Abstract: A cage for a thrust roller bearing is provided. The cage has first and second cage members each having an outer ring portion formed radially outside of a roller retention hole. The outer ring portion has a flange portion that extends, from a radially outer end of the outer ring portion, in an axial direction and is divided along the circumferential direction. The flange portion has a large diameter portion and a small diameter portion. The first cage member and the second cage member are fastened to each other while the large diameter portion and small diameter portion of the first cage member overlap the small diameter portion and large diameter portion of the second cage member, respectively.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: November 24, 2020
    Assignees: JTEKT CORPORATION, UTSUNOMIYA KIKI CO., LTD.
    Inventors: Koichiro Tsurumi, Yoshitomo Kabayama
  • Patent number: 10724576
    Abstract: A rolling-element bearing cage includes a plurality of cage segments, each cage segment including at least two adjacent receiving pockets, each receiving pocket being delimited by a front cage bridge having a front running surface for contacting a rolling element and a rear cage bridge having a rear running surface for contacting the rolling element. The front running surface and the rear running surface of at least one of the at least two adjacent receiving pockets are asymmetric relative to a center plane that divides the receiving pocket.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: July 28, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Albrecht Nestle
  • Patent number: 10670075
    Abstract: A thrust roller bearing includes rollers, a cage that holds the rollers in a manner that allows the rollers to roll, and a washer including a raceway surface on which the rollers roll. The washer includes a raceway portion that has the raceway surface and is disposed on a first axial side of the cage, and hook portions that extend toward a second axial side. Each of the hook portions includes a first projecting portion that extends toward the second axial side from the raceway portion, a second projecting portion that extends radially toward the rollers and toward the second axial side from an end portion of the first projecting portion on the second axial side, and a third projecting portion that further projects radially toward the rollers from an end portion of the second projecting portion on a side opposite to the first projecting portion.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: June 2, 2020
    Assignee: JTEKT CORPORATION
    Inventors: Kotaro Yamashita, Yoshihito Nakashima
  • Patent number: 10352359
    Abstract: A thrust roller bearing cage (11) of the present invention is included in a thrust roller bearing (20) and includes a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a first cylindrical portion (36) extending in a direction of a rotation axis (12); a first disc portion (31) continuous with the first cylindrical portion (36) and extending in a radially outward direction; and a second cylindrical portion (37) continuous with the first disc portion (31) and extending in the direction of the rotation axis (12). The first cylindrical portion (36), the first disc portion (31), and the second cylindrical portion (37) are formed in an area located radially inside the pockets (21). The height (H36) of the first cylindrical portion (36) in the direction of the rotation axis is smaller than the height (H37) of the second cylindrical portion (37) in the direction of the rotation axis.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: July 16, 2019
    Assignee: NTN CORPORATION
    Inventors: Kazuyuki Yamamoto, Hisataka Hasegawa
  • Patent number: 10260555
    Abstract: A thrust roller bearing cage (11) includes a thrust roller bearing (20) and a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a first cylindrical portion (36) extending in a direction of a rotation axis (12); a first disc portion (31) continuous with the first cylindrical portion (36) and extending in a radially outward direction; and a second cylindrical portion (37) continuous with the first disc portion (31) and extending in the direction of the rotation axis (12). The first cylindrical portion (36), the first disc portion (31), and the second cylindrical portion (37) are formed in an area located radially inside the pockets (21). The first disc portion (31) has a through hole (53).
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: April 16, 2019
    Assignee: NTN CORPORATION
    Inventors: Kazuyuki Yamamoto, Hisataka Hasegawa
  • Patent number: 10190625
    Abstract: A thrust roller bearing cage (11) includes 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) at positions aligned with the pockets (21) and project inward in the radial direction beyond radially outer edges of the pockets (21) so as to contact end faces (16) of the rollers (13) accommodated in the pockets (21). The projecting portions (44) have a width that is ? or more and ? or less of the width of the pockets (21).
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: January 29, 2019
    Assignee: NTN CORPORATION
    Inventors: Kazuyuki Yamamoto, Hisataka Hasegawa
  • Patent number: 10060476
    Abstract: A thrust roller bearing cage (11) is a cage (11) provided to a thrust roller bearing and having a plurality of pockets (21) that house needle rollers (13). The cage (11) includes projections (44) that are formed by bending a radially outer area of the cage (11) inwardly along the radius and that project inwardly along the radius toward a radially outer area of the pockets (21) to make contact with end faces (16) of the rollers (13). The projections (44) have corners (45) that make contact with the end faces (16) of the rollers (13). The corners (45) are press-flattened.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: August 28, 2018
    Assignee: NTN CORPORATION
    Inventors: Shingo Kono, Kazuyuki Yamamoto
  • Patent number: 10036420
    Abstract: A thrust bearing includes: a retainer that is provided with a plurality of pockets; a plurality of rollers that are arranged so as to freely rotate inside the plurality of pockets; and at least one first race that has an annular-shaped first race section in which the plurality of rollers move. The first race is provided with a hook curl section that is formed by bending the first race section from an outer-diameter-side periphery thereof toward the inner-diameter side obliquely in the radial direction, and an outer peripheral surface of the retainer has a conical surface that is formed so as to be substantially parallel to an inner peripheral surface of the hook curl section. The inner peripheral surface of the hook curl section holds the retainer without separating therefrom by contacting the outer peripheral surface of the retainer in a sliding manner.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: July 31, 2018
    Assignee: NSK LTD.
    Inventors: Masaki Sadamura, Yuki Shimpo, Hiromichi Takemura, Yutaka Kondou
  • Patent number: 9810261
    Abstract: A bearing including a base, a plurality of slots, and a plurality of rollers disposed in the plurality of slots. At least one of the plurality of slots may be configured to retain a first roller and a second roller of the plurality of rollers at different skewing angles. Methods for manufacturing bearings are also described. In an embodiment, a method of manufacturing a bearing includes providing a first plurality of base layers. The first plurality of base layers may include portions of a plurality of slots and portions of a plurality of cooling channels. The method may include inserting a roller in at least one of the portions of the plurality of slots and providing a second plurality of base layers.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: November 7, 2017
    Assignee: Eaton Corporation
    Inventors: Sorin Gavriliuc, Srinivasan Arjun Tekalur
  • Patent number: 9790993
    Abstract: A cage for a thrust bearing, comprising: a first plurality of circumferentially aligned pockets arranged to accept a first plurality of roller elements; a second plurality of circumferentially aligned pockets located radially inward of the first plurality of pockets and arranged to accept a second plurality of roller elements; a plurality of pairs of circumferentially extending protrusions; and a plurality of openings. Each opening in the plurality of openings: passes through material forming the cage and wholly surrounded by the material forming the cage; and is located between a respective pair of protrusions in a first circumferential direction.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: October 17, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Alaa Makke
  • Patent number: 9593714
    Abstract: A cage is provided with guidance and retention elements for the cylindrical rolling elements. The cage includes a radially inner rim including a first flange, and a plurality of first retention tabs extend from the first flange that include first and second lateral surfaces. A radially outer rim includes a second flange, and a plurality of second retention tabs extend from the second flange that include third and fourth lateral surfaces. The first and second lateral surfaces of the first retention tabs and the third and fourth lateral surfaces of the second retention tabs face each of the pockets to define lower rolling element retention elements. Webs include first and second rolling element facing guide surfaces that face adjacent ones of the pockets. Upper rolling element retention elements of the webs are provided on an opposite side of a centerline from the lower rolling element retention elements.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: March 14, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Marion Jack Ince
  • Patent number: 9523238
    Abstract: This application is directed to methods of using pressure balanced mud motors. The mud motor includes a power section to rotate a passageway housing and propel fluid through a passageway disposed in the passageway housing. The mud motor can also include a roller bearing assembly and a drive shaft assembly to improve the life and efficiency of the pressure balanced mud motor.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: December 20, 2016
    Assignee: Thru Tubing Solutions, Inc.
    Inventors: Brock Watson, Gregory Kliewer, Roger L. Schultz
  • Patent number: 9523239
    Abstract: This application is directed to a pressure balanced mud motor and a method of using the mud motor. The mud motor includes a power section to rotate a passageway housing and propel fluid through a passageway disposed in the passageway housing. The mud motor also includes a roller bearing assembly to better handle the operational conditions and stresses involved with the use of a mud motor downhole.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: December 20, 2016
    Assignee: Thru Tubing Solutions, Inc.
    Inventors: Brock Watson, Gregory Kliewer, Roger L. Schultz
  • Patent number: 9410579
    Abstract: A cage for a rolling bearing including a plurality of cage segments is provided. Each segment has a first set of pockets for a first set of rollers, and a second set of pockets for a second set of rollers. The axes of the pockets of the first set of pockets are parallel with each other and the axes of the pockets of the second set of pockets are parallel with each other.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: August 9, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize, Pascal Vioux
  • Patent number: 9157479
    Abstract: A synthetic resin-made cage plate to retain rollers lies between guideway members. The smaller pitch between the adjacent rollers in a cage results in the greater number of the rollers lying in a preselected length of the cage to get heavier load-carrying capacity. A holder to receive a pinion is molded integrally with the cage plate. The rollers are retained in openings in the cage plate at a tilt such that their rotating axes are perpendicular to the lengthwise direction of the raceway surfaces and also tilting at 45 degrees relative to major surfaces of the cage plate. The openings on their contour edges have bearing lips to retain end surfaces of the rollers. The cage plate has flanges extending lengthwise on its' widthwise opposite edges and bulging sidewise out over the major surfaces of the cage plate to render the cage plate tougher to warp or bend.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: October 13, 2015
    Assignee: NIPPON THOMPSON CO., LTD.
    Inventors: Shinji Kano, Tsuguyoshi Nara
  • Patent number: 9127719
    Abstract: A method of manufacturing a bearing assembly includes the steps of providing first (38) and second (42) cage frames, each including a plurality of holes (46) spaced along a circumference of the respective first and second cage frames (38, 42), positioning a plurality of rollers (22) between the first and second cage frames (38, 42), each of the rollers (22) including a bore (26) coaxial with a rotational axis (30) of the respective rollers (22), aligning the bore (26) of a first of the plurality of rollers (22) with a first hole (46) in each of the respective first and second cage frames (38, 42), then sliding a threaded end (54) of a pin (50) through the first hole (46) in the first cage frame (38) and the first roller (22) a sufficient distance to engage the second cage frame (42). The method further includes rotating the pin (50) to form a screw thread in the first hole (46) of the second cage frame (42) with the threaded end (54) of the pin (50).
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: September 8, 2015
    Assignee: The Timken Company
    Inventors: Robert C. Sykes, Scott J. Brunner
  • Patent number: 9057222
    Abstract: This application is directed to a pressure balanced mud motor and a method of using the mud motor. The mud motor includes a power section to rotate a passageway housing and propel fluid through a passageway disposed in the passageway housing. The mud motor also includes a hydraulic apparatus for balancing a pressure drop experienced across a bearing assembly due to frictional flow of fluid through the passageway.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 16, 2015
    Assignee: Thru Tubing Solutions, Inc.
    Inventors: Brock Watson, Gregory Kliewer, Roger L. Schultz
  • Patent number: 9039290
    Abstract: A cage, which is annular, and is used in a thrust roller bearing, includes a plurality of cage segments arranged in a circumferential direction. Each of the cage segments includes an arc portion; and a bar portion that extends radially inward from the arc portion and that maintains a circumferential interval between rollers adjacent to each other. A groove portion extending along an axial direction is formed at each of end faces of the arc portions, the end faces facing each other in the circumferential direction. In the cage, elastic bodies are inserted into the groove portions and urge the arc portions in the circumferential direction, each of the elastic bodies is disposed between the end faces facing each other, and the cage segments are connected to each other by the elastic bodies.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: May 26, 2015
    Assignee: JTEKT CORPORATION
    Inventor: Ryou Takahashi
  • Patent number: 9022665
    Abstract: The spacer is adapted for a rolling bearing comprising an inner ring, an outer ring and at least one row of contact rollers disposed between raceways provided on the rings. The spacer comprises opposite inner and outer portions, facing one another and a lateral portion extending transversally between the inner and outer portions and connected to said portions. The inner and outer portions delimit together with the lateral portion a pocket configured to receive a contact roller. The pocket is laterally open on the side opposite to the lateral portion.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: May 5, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize
  • Patent number: 9004041
    Abstract: A thrust bearing for use in an engine is disclosed. The thrust bearing may have a ring member with a generally planar front face and a generally planar back face. The thrust bearing may also have a plurality of radially-oriented wedge-shaped channels formed in the front face, and a plurality of recesses formed within the back face. Each of the plurality of recesses may be located in general annular alignment with an associated one of the plurality of radially-oriented wedge-shaped channels.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: April 14, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventor: Stephen M. Bednarz
  • Patent number: 8961029
    Abstract: Construction of a roller thrust bearing is achieved wherein it is possible to keep a thrust race from coming apart from a cage without wear or cracking occurring in a cage element and without impact occurring between the thrust race and cage even when used in an application wherein a rotating section rotates at high speed, or when used in an application wherein relative displacement between members of a rotating section is large. The thickness of metal plate of a first cage element 35 is preferably ? the thickness of metal plate of a second cage element 36 or less. Alternatively, the thickness of metal plate of a second cage element 56 is preferably ? the thickness of metal plate of a first cage element 55 or less.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: February 24, 2015
    Assignee: NSK Ltd.
    Inventors: Ryosuke Yamada, Tomoyuki Yokota
  • Patent number: 8926191
    Abstract: An axial cage for cylindrical rolling elements includes an annular disc, the disc having a W-shaped profile cross-section and including a radially inner rim, a radially outer rim, and a U-shaped bead connected via straight profile sections to the rims. Rectangular cage pockets are worked out of the bead and the adjoining straight sections, between which are pocket webs that connect the rims to one another and hold cylindrical rolling elements in the cage pockets. The outer rim has a crown cap-like overall shape such that it includes, in the region of each cage pocket, a constriction that extends axially into the cage pocket and is in supporting contact with an end face of the rolling elements, and, in the region of each pocket web, a section corresponding to the outer diameter of the axial cage.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: January 6, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Wolfgang Fugel, Andreas Kirschner
  • Patent number: 8926190
    Abstract: A bearing cage assembly comprising of a plurality of discrete bridge elements coupled between first and second cage support wire rings having selected tensions, and conforming to the surfaces of associated rolling elements. The discrete bridge elements maintain rolling element in separation, provide rolling element retention within the bearing assembly, and function as a lubrication reservoir for grease lubricated bearings. The discrete bridge elements may be disposed between adjacent rolling elements, or may be configured to pass through axial bores of hollow rolling elements.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: January 6, 2015
    Assignee: The Timken Company
    Inventors: Gerald P. Fox, Brian Werner, Thomas J. Rybkoski
  • Patent number: 8911155
    Abstract: A cage bar of at least one of pockets, the cage bar being on one side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward one side in an axial direction such that an end face of the cage bar on the other side in the axial direction is recessed toward the one side in the axial direction. Further, a cage bar of the at least one of the pockets, the cage bar being on the other side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward the other side in the axial direction such that an end face of the cage bar on the one side in the axial direction is recessed toward the other side in the axial direction.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: December 16, 2014
    Assignee: JTEKT Corporation
    Inventor: Takaaki Onizuka
  • Patent number: 8888373
    Abstract: A rolling bearing cage (10) having a plurality of loose segments (11, 12, 13, 14) arranged in the circumferential direction is provided. The segments (11, 12, 13, 14) comprise a main body (15) having at least one pocket (16) for receiving rolling bodies (21). At least one play compensating element (17) is arranged circumferentially between two adjacent main bodies (15), and the play compensating element (17) has circumferentially a higher elasticity than a main body (15), and the segments (11, 12, 13, 14) are arranged circumferentially without play at room temperature.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: November 18, 2014
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Andreas Mangold, Tobias Müller, Andreas Bierlein
  • Patent number: 8882361
    Abstract: Between an inner race and an outer race, a plurality of thrust rollers supporting the inner race and the outer race capable of relative rotation are provided. A thrust cage for retaining each thrust roller capable of rolling is composed of a plurality of cage separate bodies separated and arranged in a roller accommodating space. The cage separate body has two projecting portions having a semicircular cross-sectional shape provided on an outer wall surface of an outside connecting portion spaced apart from each other in a peripheral direction of the outer race. With relative rotation between the inner race and the outer race, when each cage separate body is displaced toward an inner peripheral surface side of the outer race, a top portion of each projecting portion is brought into contact with the inner peripheral surface of the outer race.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: November 11, 2014
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventor: Shinichi Sekido
  • Patent number: 8882360
    Abstract: A conical roller bearing device includes: a conical roller bearing that includes an inner ring (24) that has an outer raceway surface on its outer peripheral surface, an outer ring (22) that has an inner raceway surface on its inner peripheral surface, a retainer (26), and a plurality of conical rollers that are rollably arranged between the outer raceway surface of the inner ring (24) and the inner raceway surface of the outer ring (22) and that are respectively accommodated in pockets formed in the retainer (26); and a pressing mechanism that presses the retainer (26) in a direction to reduce gaps between the conical rollers and the outer raceway surface of the inner ring (24) and gaps between the conical rollers and the inner raceway surface of the outer ring (22) along center axes of the inner ring (24) and outer ring (22).
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: November 11, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Motoichi Murakami, Kenichi Harada, Kenichi Nakaoka, Yoshitaka Waseda
  • Patent number: 8851761
    Abstract: In a split cage for a rolling bearing, cage segments each having a plurality of pockets that accommodate rolling elements are arranged in a circular manner along the circumferential direction. Protrusions are formed on end faces of rims of one of the adjacent cage segments, and grooves are formed in end faces of rims of the other one of the adjacent cage segments. By fitting the protrusions into the grooves, the adjacent cage segments are prevented from moving relative to each other in the radial direction.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: October 7, 2014
    Assignee: JTEKT Corporation
    Inventor: Takeshi Miyachi
  • Patent number: 8845204
    Abstract: The spacer is adapted for a rolling bearing comprising an inner ring, an outer ring and at least one row of contact rollers disposed between raceways and guiding surfaces provided on the rings. The spacer comprises opposite inner and outer portions facing one another and at least a first lateral portion extending transversally between the inner and outer portions and connected to the portions. The inner and outer portions and the first lateral portion delimit at least partly a pocket configured to receive at least a contact roller. The inner and outer portions each comprise at least a protruding means extending outwards and having a contact surface with one of the inner and outer rings.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: September 30, 2014
    Assignee: Aktiebolaget SKF
    Inventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize
  • Patent number: 8814440
    Abstract: A thrust roller bearing (21) comprises a plurality of rollers (23) and an annular retainer (11) having a plurality of pockets (14) for containing the rollers (23), not bent in a thickness direction and guided by the rollers. Each of first and second roller retaining parts (17a) and (17b) for retaining the roller (23) includes an arc-shaped curved line projecting toward the pocket in a cross section provided by cutting the retainer (11) by a plane containing the first and second roller retaining parts (17a) and (17b) and perpendicular to a center axis (30) of the roller (23).
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: August 26, 2014
    Assignee: NTN Corporation
    Inventor: Rino Fukami
  • Patent number: 8814437
    Abstract: A method for producing a roller bearing cage (1) is provided, including the following steps: a base body (2) which is close to a net shape is produced by a stereolithography method or by a 3D-printing method, and the provided base body (2) is coated with a thin, nanocrystalline coating (3). A roller bearing cage, including a base body (2) and a nanocrystalline coating (3) fixed to the base body (2) produced by this method is also provided. This method is suitable for producing roller bearing cages in only small quantities in a small series.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: August 26, 2014
    Assignee: Schaeffler Tecnologies GmbH & Co. KG
    Inventor: Wolfgang Braun
  • Patent number: 8790020
    Abstract: A rolling bearing cage, which has two annular elements and cage crossbars connecting the annular elements to each other so as to form pockets for receiving rolling elements arranged between every two adjacent cage crossbars and the annular elements. The cage crossbars have an elastic configuration. Also, a rolling bearing is disclosed that has a rolling bearing cage.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: July 29, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Friedrich, Michael Krueger, Steffen Saebsch, Heinz Schaefers, Matthias Fick, Manfred Winkler, Johannes Enders
  • Patent number: 8790021
    Abstract: The spacer is adapted for a rolling bearing comprising an inner ring, an outer ring and at least two rows of contact rollers disposed between raceways provided on the rings. The spacer comprises opposite inner and outer portions facing one another, a first lateral portion extending transversally between the inner and outer portions and connected to the portions, and a second lateral portion facing the first lateral portion and extending from the outer portion towards the inner portion. The inner and outer portions delimit together with the lateral portions a pocket configured to receive at least two superposed contact rollers. A free edge of the second lateral portion defines with the inner portion an aperture in order to open laterally the pocket on the side opposite to the first lateral portion.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: July 29, 2014
    Assignee: Aktiebolaget SKF
    Inventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize
  • Patent number: 8790019
    Abstract: A cage used in a large-size rolling bearing is formed of a plurality of cage segments having a circular-arc shape and arranged in a circular pattern. Each cage segment includes rims opposed to each other and separated from each other at a predetermined interval, and a plurality of cage bars that extend from one of the rims to the other rim and that define pockets which accommodate the rollers and which are arranged in the circumferential direction. Multiple pairs of hook portions, between which the inner ring is sandwiched, are formed so as to project from the rims, and are arranged at predetermined intervals in the circumferential direction. Distal ends of the hook portions are engaged with annular grooves formed in end portions of the inner ring so as be rotatable relative to the inner ring.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: July 29, 2014
    Assignee: JTEKT Corporation
    Inventor: Hideki Fujiwara
  • Publication number: 20140205228
    Abstract: A cage, which is annular, and is used in a thrust roller bearing, includes a plurality of cage segments arranged in a circumferential direction. Each of the cage segments includes an arc portion; and a bar portion that extends radially inward from the arc portion and that maintains a circumferential interval between rollers adjacent to each other. A groove portion extending along an axial direction is formed at each of end faces of the arc portions, the end faces facing each other in the circumferential direction. In the cage, elastic bodies are inserted into the groove portions and urge the arc portions in the circumferential direction, each of the elastic bodies is disposed between the end faces facing each other, and the cage segments are connected to each other by the elastic bodies.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 24, 2014
    Applicant: JTEKT CORPORATION
    Inventor: Ryou TAKAHASHI
  • Patent number: 8771836
    Abstract: It is an object of the present invention to provide a resin composition whose flowability is secured when the resin composition is injection-molded into injection-molded articles such as a resin-made crown-shaped cage and a resin-made seal both for a rolling bearing and a resin-made sliding bearing and which is capable of enhancing the mechanical strengths and toughnesses of these injection-molded articles to such an extent that these injection-molded articles can be used as bearing members. The resin composition is formed into a molded article and used as a bearing member. The resin composition is composed of polyamide resin or polyester resin to which polycarbodiimide is added. The polyamide resin is at least one resin selected from among polyamide 66 resin and polyamide 11 resin. The polyester resin is polytrimethylene terephthalate resin. 0.5 to 6 wt % of the polycarbodiimide is contained in an entirety of the resin composition.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: July 8, 2014
    Assignee: NTN Corporation
    Inventors: Yoshihide Himeno, Masaki Egami, Eiichirou Shimazu
  • Publication number: 20140126852
    Abstract: A cage bar of at least one of pockets, the cage bar being on one side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward one side in an axial direction such that an end face of the cage bar on the other side in the axial direction is recessed toward the one side in the axial direction. Further, a cage bar of the at least one of the pockets, the cage bar being on the other side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward the other side in the axial direction such that an end face of the cage bar on the one side in the axial direction is recessed toward the other side in the axial direction.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 8, 2014
    Applicant: JTEKT CORPORATION
    Inventor: Takaaki ONIZUKA
  • Patent number: 8690452
    Abstract: A cage for roller bodies, for example axial bearings or flat guides, which is approximately W-shaped in the longitudinal cross-section, having side walls forming W-shaped limbs and webs connecting them, between which the roller bodies are accommodated. The profile of the webs is suitable for limiting the freedom of movement of the roller bodies to at least two degrees of freedom. Furthermore, the profile of the webs is designed such that the freedom of movement of the roller bodies can be limited in at least one additional degree of freedom.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: April 8, 2014
    Assignee: Schaeffler Technologies AG & Co., KG
    Inventors: Wolfgang Fugel, Alexander Reimchen
  • Publication number: 20140016893
    Abstract: An object is to provide a retainer for a thrust bearing, from which rollers are not apt to drop once placed in pockets in the retainer in a manufacturing processes. A retainer is constituted by an annular member made from a flat steel plate; has a main body area in its widthwise intermediate region. The main body area has its outer circumferential edge formed with an outer circumferential engagement edge which is lower than a surface of the main body area. A large number of pockets are equi-spaced in a circumferential direction of the main body area in the thickness direction. Each of the pockets has a guide surface formed with anti-dropping projections of a roller for preventing the roller from dropping.
    Type: Application
    Filed: April 3, 2012
    Publication date: January 16, 2014
    Inventor: Makoto Nishikawa
  • Patent number: 8627570
    Abstract: A manufacturing method of a roller bearing cage, including a cage main body formed with an annular plate, and a plurality of cage pockets opened along a circumferential direction on the cage main body for retaining rollers having flat end faces, includes punching an annular plate from a metal, forming a plurality of cage pockets on the annular plate, and pressing an edge of one of the cage pockets in a thickness direction of the annular plate on a side face of the one of the cage pockets with a press jig having a pressing face of a predetermined shape to form a chamfered portion.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: January 14, 2014
    Assignee: JTEKT Corporation
    Inventor: Wataru Takamizawa
  • Publication number: 20140003758
    Abstract: A roller bearing cage 16 with roller bearing pockets 18 which are arranged one next to the other in the circumferential direction and have the purpose of holding load-bearing roller bodies 10 of a roller bearing, wherein at least one end piece 14 which engages behind a roller bearing component 12 is formed on the roller bearing cage 16. The end piece 14, which is ideally embodied as a retaining claw, holds the inner ring and the roller body 10 together, but can be removed after or during the assembly by means of a predetermined rupture point 15, in order to make room for a further component, such as for example a sealing arrangement. As a result, despite the installation assistance, optimum use of the installation space is provided.
    Type: Application
    Filed: November 15, 2011
    Publication date: January 2, 2014
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventor: Marc-Andre Schaefer
  • Patent number: 8602657
    Abstract: A bearing cage defines an overall axial length and includes a first end portion defining a first contact surface extending at a radially-outermost diameter of the bearing cage a first axial contact length, and a second end portion spaced a distance from the first end portion and defining a second contact surface extending at the radially-outermost diameter of the bearing cage a second axial contact length. The bearing cage further includes a plurality of spanning members extending between the first and second end portions to define a spanning member axial contact length defined at the radially-outermost diameter of the bearing cage by at least one contact pad. The bearing cage produces a total contact ratio, defined as the ratio of the sum total of the first axial contact length, the second axial contact length, and the spanning member axial contact length to the overall axial length, of at least 0.380.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: December 10, 2013
    Assignee: Koyo Bearings USA LLC
    Inventors: Michael G. Brown, Jean E. Kleis
  • Publication number: 20130301974
    Abstract: Construction of a roller thrust bearing is achieved wherein it is possible to keep a thrust race from coming apart from a cage without wear or cracking occurring in a cage element and without impact occurring between the thrust race and cage even when used in an application wherein a rotating section rotates at high speed, or when used in an application wherein relative displacement between members of a rotating section is large. The thickness of metal plate of a first cage element 35 is preferably ? the thickness of metal plate of a second cage element 36 or less. Alternatively, the thickness of metal plate of a second cage element 56 is preferably ? the thickness of metal plate of a first cage element 55 or less.
    Type: Application
    Filed: February 2, 2012
    Publication date: November 14, 2013
    Inventors: Ryosuke Yamada, Tomoyuki Yokota
  • Publication number: 20130287331
    Abstract: Between an inner race and an outer race, a plurality of thrust rollers supporting the inner race and the outer race capable of relative rotation are provided. A thrust cage for retaining each thrust roller capable of rolling is composed of a plurality of cage separate bodies separated and arranged in a roller accommodating space. The cage separate body has two projecting portions having a semicircular cross-sectional shape provided on an outer wall surface of an outside connecting portion spaced apart from each other in a peripheral direction of the outer race. With relative rotation between the inner race and the outer race, when each cage separate body is displaced toward an inner peripheral surface side of the outer race, a top portion of each projecting portion is brought into contact with the inner peripheral surface of the outer race.
    Type: Application
    Filed: January 6, 2012
    Publication date: October 31, 2013
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventor: Shinichi Sekido
  • Patent number: 8529137
    Abstract: The bearing cage has a first flange, a second flange, and a plurality of cage bars extending between the first flange and the second flange so as to form and define outer boundaries for a plurality of pockets. The first flange and the second flange are each bent inward toward the pocket and then extend parallel in a vertical direction, forming a contact surfaces. The contact surfaces are in contact at each end of the rollers arranged in the pocket. The contact surfaces of the bearing cage present a large contact area between the ends of the rollers and the ends of the pockets where there is a lubricant film. Also, the surface of the contact surfaces is smooth.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: September 10, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: James Brown, Seth Claus, Michael Turner
  • Publication number: 20130182991
    Abstract: A plurality of cage bars of a cage is configured so as to project inward in the radial direction from an inner periphery of an annular portion and to be apart from each other in the circumferential direction. The radially inner side of each pocket defined by two cage bars adjacent to each other in the circumferential direction and the annular portion is open in the radial direction. A concave portion is formed at a corner of the pocket, which is located at the radially outer side.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 18, 2013
    Applicant: JTEKT CORPORATION
    Inventor: JTEKT CORPORATION