Split Ring Patents (Class 384/570)
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Patent number: 11951525Abstract: For producing a welded ring, a band of a length corresponding to the circumference of the ring is bent into a ring and its two ends are welded together. The band ends to be welded together have an offset in the circumferential direction of the ring, the offset lying in the plane of the band. The welding is performed from both lateral edges of the ring, from the outside to the inside up to the offset. Welding having an overall improved welding quality and a higher tensile strength is thus obtained.Type: GrantFiled: March 9, 2017Date of Patent: April 9, 2024Assignee: OETIKER SCHWEIZ AGInventors: Stefan Miessmer, Andreas Vetter
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Patent number: 11428202Abstract: A wind turbine blade (10) for a horizontal axis wind turbine (2), wherein the wind turbine blade (10) extends in a longitudinal direction parallel to a longitudinal axis and having a tip end (14) and a root end (16), and wherein the wind turbine blade (2) further includes a shell body is disclosed. The wind turbine blade (10) further includes a root end flange (55, 155, 255) at the root end (16) of the blade (10) and which includes a ring-shaped body that extends circumferentially along the entire root end (16), the root end flange (55, 155, 255) preferably made from a metal, such as stainless steel. The root end flange (55, 155, 255) includes an inwardly extending protrusion (70, 170) with a distal plate part (72, 172, 272, 372, 472, 572, 672, 772) arranged in a distance from the ring body.Type: GrantFiled: August 12, 2016Date of Patent: August 30, 2022Assignee: LM WP PATENT HOLDING A/SInventors: Flemming Ejlersen, René Van Den Berg, David Roberts, Eddy Keesmekers
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Patent number: 11286989Abstract: A split double row spherical roller bearing comprising an outer ring including an outer race, an inner ring within the outer ring including an inner race, a cage mounted between the inner and outer races, the cage mounting rollers which engage the inner and outer races, the inner ring, inner race, outer ring, outer race, and cage each comprising two generally semicircular parts engageable together to form a circular component via respective radially extending contact surfaces, and characterized in that the contact surfaces of at least the outer ring comprise a saw-tooth arrangement in which the angle of each saw tooth joint is between 25 and 40 degrees.Type: GrantFiled: February 20, 2019Date of Patent: March 29, 2022Inventor: Martin Caspall
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Patent number: 11193540Abstract: An inner ring assembly for a ball bearing assembly includes a proximal inner ring made from a first material. The inner ring assembly further includes a distal inner ring made from a second material. The first material is different from the second material.Type: GrantFiled: April 22, 2020Date of Patent: December 7, 2021Assignee: PRATT & WHITNEY CANADA CORP.Inventor: Cedric Poirier
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Patent number: 11067128Abstract: A rolling bearing includes an inner ring and an outer ring, at least the inner ring or the outer ring being split into a plurality of successive circumferential ring segments. The rolling bearing further includes at least one alignment member circumferentially interposed between each pair of facing ends of the successive ring segments of the split-ring. The alignment member being secured onto a first one of the facing ends and protruding into a recess formed onto a second one of the facing ends to align the pair of facing ends in radial and axial directions.Type: GrantFiled: February 13, 2020Date of Patent: July 20, 2021Assignee: Aktiebolaget SKFInventors: Bruno Capoldi, Herve Dondaine
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Patent number: 10400818Abstract: A track roller assembly includes a split inner ring, a split outer ring, a one piece inner ring and/or a one piece outer ring and a liner or plurality of rolling elements engaging therewith, the track roller assembly being disposed in a structure of an Airbus A-350 aircraft, an Airbus A-320 aircraft, an Airbus A320Neo aircraft, an Airbus A330 aircraft, an Airbus A330Neo aircraft, an Airbus A321 aircraft, an Airbus A340 aircraft, and an Airbus A380 aircraft.Type: GrantFiled: December 4, 2015Date of Patent: September 3, 2019Assignee: Roller Bearing Company of America, Inc.Inventors: John H. Cowles, Jr., Jay Phoenix, Arnold E. Fredericksen
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Patent number: 10215235Abstract: A bearing unit configured to support a first component for rotary movement with respect to a second component includes a first bearing having an inner ring and an outer ring and a second bearing having an inner ring and an outer ring and a separator axially disposed between and connecting the outer ring of the first bearing and the outer ring of the second bearing in an interference fit manner or in a friction fit manner to form a preassembled unit. The separator may be annular and have a plastic base body with axial openings in which metal spacers, cylindrical rods, for example, are mounted.Type: GrantFiled: June 23, 2017Date of Patent: February 26, 2019Assignee: Aktiebolaget SKFInventors: Ludwig Edelmann, Matthias Schuler
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Patent number: 9551377Abstract: A crankshaft or connecting-rod bearing assembly of an internal combustion engine includes a bearing journal configured to function as a bearing inner ring, and a bearing outer ring surrounds the bearing journal. At least one row of rolling elements is disposed between the bearing journal and the bearing outer ring, the rolling elements are held by a cage, and the cage includes at least two cage segments, each of which extends around a circumferential section of the bearing journal. Furthermore, the at least two cage segments are connected to each other in a materially-bonded manner at at least one joint lying in the circumferential direction.Type: GrantFiled: July 16, 2015Date of Patent: January 24, 2017Assignee: AKTIEBOLAGET SKFInventors: Roland Haas, Yvonne Koehler, Armin Olschewski, Volker Wendt
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Patent number: 9551372Abstract: A snap ring which has a substantially radially directed ring section with a support surface and a substantially axially directed ring section with a lateral surface, the two ring sections forming an L-shaped cross-section, and a ring gap. For ease of use, at least one of the two end sections that face each other in the ring gap is turned outward in the radial direction in relation to the rest of the ring profile by bending, and, in the bent region, the axial ring section has a notch.Type: GrantFiled: June 21, 2013Date of Patent: January 24, 2017Assignee: Hugo Benzing GmbH & Co. KGInventor: Horst Gutscher
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Patent number: 9388851Abstract: A split cylindrical bearing assembly having a first split outer ring with an inner radial self-aligning feature aligning axially with a second split outer ring having an outer radial self-aligning feature, the second split outer ring having two sections that are fixedly assembled and circumferentially aligned. A split inner ring having two sections fixedly assembled and circumferentially aligned is assembled within and axially aligned with the second split outer ring, and a split cage retaining rolling elements disposed between the second split outer ring and the split inner ring. Also the split cylindrical bearing assembly assembled onto a shaft and into a housing assembly.Type: GrantFiled: December 22, 2014Date of Patent: July 12, 2016Assignee: Schaeffler Technologies AG & Co. KGInventor: Rocco Docimo
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Patent number: 9239076Abstract: Method for manufacturing a bearing ring (14, 34, 36) from at least one steel bar (12) having ends. The method comprises the steps of forming said at least one steel bar (12) into at least one ring segment and flash butt welding the ends (12a, 12b) of said at least one ring segment to make a ring. The method also comprises the step of carburizing at least part (C) of a surface (12c, 12d) of said at least one steel bar (12) which is adjacent to said surface (12a, 12b) that is to be flash butt welded prior to said flash butt welding.Type: GrantFiled: May 27, 2011Date of Patent: January 19, 2016Assignee: AKTIEBOLAGET SKFInventor: Patrik Dahlman
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Patent number: 9140296Abstract: The present invention relates to a roller bearing (10) for supporting a rotatable component such as a shaft. We describe a double row roller bearing (10) for supporting a rotatable circular section component, said roller bearing (10) comprising an inner ring (11) including a pair of inner races (12, 13), an outer ring (17) including a pair of outer races (18, 19), two rows of rollers (22, 23) mounted between the inner and outer races, each row of which rollingly engages respective races in the inner and outer rings, clamping ring means (26) which surrounds and clamps said inner ring (11), at least said inner ring (11) and said clamping ring means (26) each comprising two substantially semicircular parts, the relevant semicircular parts being mounted together to provide a circular component for surrounding the rotatable component, and said clamping ring means (26) surrounds and clamps with said inner ring (11) at a position substantially midway between the axially opposite sides of the inner ring (11).Type: GrantFiled: October 2, 2012Date of Patent: September 22, 2015Assignee: Cooper Roller Bearings Co., Ltd.Inventor: Martin Caspall
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Publication number: 20150131935Abstract: A roller bearing (21) includes a plurality of needle rollers (23), a cage (24) that retains the rollers (23), and an outer ring (22) that has a rolling surface on which the rollers roll and is split in the circumferential direction. The cage (24) includes split sections (32a), (32b) at which the cage can be split in the circumferential direction. The cage (24) is of a roller riding type or an inner land riding type.Type: ApplicationFiled: April 23, 2013Publication date: May 14, 2015Inventors: Akihiko Katayama, Katsufumi Abe
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Patent number: 9011017Abstract: A radial rolling bearing (10) with rolling bodies (24) which are received in at least one cage (26, 28) and which are arranged between an inner ring (20) and an outer ring (22). The radial rolling bearing (12) is radially separable, and the radially multipart inner ring (20) can be fixed on a shaft (16) using two clamping rings (36, 38) which are attached to the axial ends of said inner ring. The inner ring (20) is designed without rims on the axially outer sides, and the clamping rings (36, 38) take on the function of inner ring rims, the rolling bodies (24) running against inner run-on surfaces (50) of the clamping rings (36, 38) in the axial direction. On the basis of the at least partial positioning of the clamping rings (36, 38) axially below the cages (26, 28) or the outer ring (22), the clamping rings (36, 38) take on two additional functions in addition to the actual clamping ring main function of fixing the inner ring (20) on the shaft (16).Type: GrantFiled: April 12, 2012Date of Patent: April 21, 2015Assignee: Schaeffler Technologies, AG & Co. KGInventor: Rainer Schroder
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Patent number: 8956055Abstract: A split bearing ring according to the invention includes two or more split portions into which the split bearing ring is divided with respect to a circumferential direction. Surfaces of the split portions other than circumferential end faces of the spit portions have hardness of HRC 59 or higher, the surfaces of the split portions other than the circumferential end faces are quenched and tempered, and the surfaces of the split portions other than the circumferential end faces have a prior austenite grain size of No. 6 or above. The split portions are formed by applying a load to a bearing ring such that stress generated on one end side of the bearing ring with respect to an axial direction is larger than stress generated on the other end side of the bearing ring with respect to the axial direction.Type: GrantFiled: February 23, 2012Date of Patent: February 17, 2015Assignee: NSK Ltd.Inventors: Yuji Miyamoto, Masahito Matsui
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Patent number: 8939651Abstract: A bearing assembly includes at least first, second and third raceway elements that are each separable from each other and at least first, second and third rows of truncated-cone-shaped rolling elements. The first and second raceway elements are disposed side-by-side in an axial direction of the bearing assembly and oppoe the third raceway element in a radial direction of the bearing assembly. The first and second rows of rolling elements are disposed between the first raceway element and the third raceway element and the third row of rolling elements is disposed between the second raceway element and the third raceway element. The rolling elements of the first and second rows commonly roll on a first raceway of the third raceway element and the rolling elements of the third row roll on a second raceway of the third raceway element, which is not parallel to the first raceway.Type: GrantFiled: March 21, 2011Date of Patent: January 27, 2015Assignee: Aktiebolaget SKFInventors: Joachim Sommer, Armin Olschewski, Rainer Spies, Arno Stubenrauch
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Patent number: 8894292Abstract: A split outer ring of a split rolling bearing, which splits in a radial direction, includes a pair of split outer ring members which are each formed into a semi-cylindrical shape and which are formed into a cylindrical shape by being butted against each other at circumferential end portions. A pair of first flat plane portions which extend from both axial end edges of the end portions towards a center in parallel with an axis and a V-shaped recess portion, positioned between the first flat plane portions and is recessed in a circumferential direction relative to the pair of first flat plane portions, are formed at one end portion of the circumferential end portions which are butted against each other, and a pair of second flat plane portions which extend from the both axial end edges in parallel with the axis.Type: GrantFiled: May 18, 2009Date of Patent: November 25, 2014Assignee: Jtekt CorporationInventors: Kazuyoshi Yamakawa, Junji Murata, Toshiyuki Saito, Takashi Sada, Naoki Tani
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Publication number: 20140334760Abstract: A roller bearing assembly (10) having an annular outer race (22) with a raceway (24), a pair of opposed flanges (30), and a pair of shoulders (32), each shoulder (32) being disposed between a corresponding flange (30) and a corresponding edge of the raceway (24), a roller retainer (12) defining a plurality of roller pockets (16), and a plurality of rollers (14), each roller (14) being disposed in a corresponding roller pocket (16). Each shoulder (32) forms an annular ridge (32a) with the corresponding edge of the raceway (24).Type: ApplicationFiled: December 13, 2012Publication date: November 13, 2014Applicant: Koyo Bearings USA LLCInventor: Scott Abrahamson
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Patent number: 8882125Abstract: A bicycle assembly can include a main frame having a bottom bracket shell to receive a bottom bracket. The bottom bracket shell can be made of carbon fiber with one or more metal rings to serve as bearing surfaces within the bottom bracket shell. The metal rings may also be split metal rings with a gap between two spaced apart ends.Type: GrantFiled: December 9, 2011Date of Patent: November 11, 2014Assignee: Specialized Bicycle Components, Inc.Inventors: Bradley L. Paquin, Jean-Luc Callahan, Robb Jankura, Christopher P. D'Aluisio
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Publication number: 20130251298Abstract: A method for manufacturing a rolling-element bearing includes forming an inner ring from a steel having a sulfur content of 0.002 to 0.015 mass % and an oxygen content of less than 15 ppm, subjecting the inner ring to a hardening heat treatment that ends by performing a final heat treatment step at a predetermined temperature, cold working the inner-ring raceway to generate compressive residual stresses at least in a surface layer of the inner-ring raceway, subjecting the inner ring to a bluing treatment and subjecting the blued inner ring to a thermal post-treatment process at a temperature below the predetermined temperature of the final hardening heat treatment step. The resulting rolling-element bearing may exhibit compressive residual stresses having an absolute value of at least 200 MPa at 0.1 mm beneath the outer surface of the inner-ring raceway and a maximum value of 1500 MPa or less throughout the inner ring.Type: ApplicationFiled: November 15, 2012Publication date: September 26, 2013Applicant: AKTIEBOLAGET SKFInventors: Juergen Gegner, Wolfgang Nierlich, Armin Olschewski, Kenred Stadler, Arno Stubenrauch, Markus Volkmuth
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Patent number: 8523452Abstract: A bearing structure includes a housing including a first housing portion and a second housing portion forming together with the first housing portion, a cross-sectionally generally-circular support hole, and a rolling bearing including a pair of outer rings mounted within the support hole of the housing in closely-contacted relation thereto, a plurality of rolling elements mounted to be able to roll on inner side surfaces of the pair of outer rings, and a pair of cages holding the rolling elements. The first housing portion and the second housing portion are mounted in an offset relation to each other in a radial direction so that at mating surfaces of circumferential end portions of the pair of outer rings, the outer ring end portions disposed at an upstream side with respect to a direction of rotation of the shaft form radially inwardly-projecting steps, respectively.Type: GrantFiled: August 29, 2008Date of Patent: September 3, 2013Assignee: Jtekt CorporationInventors: Kazuyoshi Yamakawa, Takashi Sada
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Publication number: 20130209019Abstract: A split bearing ring according to the invention includes two or more split portions into which the split bearing ring is divided with respect to a circumferential direction. Surfaces of the split portions other than circumferential end faces of the spit portions have hardness of HRC 59 or higher, the surfaces of the split portions other than the circumferential end faces are quenched and tempered, and the surfaces of the split portions other than the circumferential end faces have a prior austenite grain size of No. 6 or above. The split portions are formed by applying a load to a bearing ring such that stress generated on one end side of the bearing ring with respect to an axial direction is larger than stress generated on the other end side of the bearing ring with respect to the axial direction.Type: ApplicationFiled: February 23, 2012Publication date: August 15, 2013Applicant: NSK LTD.Inventors: Yuji Miyamoto, Masahito Matsui
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Patent number: 8418670Abstract: A needle roller bearing (21) as a roller bearing comprises an outer ring (22) having a plurality of outer ring members (22a) and (22b) split by a split line extending in the axial direction of the bearing, and a plurality of needle rollers (23) arranged along the track surface of the outer ring (22). The outer ring member (22a) is in the form of a semicircular shape having a center angle of 180° and has an engagement click (22c) bent from one circumferential side end to the radial outer side. The two outer ring members (22a) and (22b) are connected in the circumferential direction to form the annular outer ring (22).Type: GrantFiled: August 30, 2007Date of Patent: April 16, 2013Assignees: NTN Corporation, Honda Motor Co., Ltd.Inventors: Katsufumi Abe, Akihiko Katayama, Yugo Yoshimura, Shinji Oishi, Hiroki Tsuchiyama, Noriaki Fujii, Tomoya Fujimoto, Keiko Yoshida, Kiminori Komura, Kazuto Abe
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Patent number: 8393800Abstract: Needle roller bearing includes an outer ring having first outer ring member having center angle larger than 180° and second outer ring member having center angle smaller than 180°, needle rollers, a retainer having ring section pairs and column sections arranged between the pair of ring sections, d<X<D and the formula below are satisfied wherein D represents the outer ring inner diameter, r represents a needle roller radius, d represents the retainer outer diameter, and X represents a line segment length l1 connecting circumferential ends of an inner diameter surface of the first outer ring member.Type: GrantFiled: June 3, 2008Date of Patent: March 12, 2013Assignee: NTN CorporationInventors: Katsufumi Abe, Akihiko Katayama
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Patent number: 8360656Abstract: A bearing apparatus includes two split outer ring halves disposed in close contact with each other and a plurality of rollers. A circumferential end of each of the split outer ring halves has a concave-and-convex shape including a first slope portion inclined with respect to a line extending along an axial direction of the split outer ring halves and a second slope portion inclined in an opposite direction to that of the first slope portion. Each of the rollers is provided with crowning so as to be shaped in barrel form, and an amount of crowning is set such that an apex of a projecting portion at the concave-and-convex shape of each of the split outer ring halves is located on an axially outer side of a rolling surface of the roller rolling on an inner peripheral surface of each of the split outer ring halves.Type: GrantFiled: December 3, 2008Date of Patent: January 29, 2013Assignee: JTEKT CorporationInventors: Junji Murata, Kazuyoshi Yamakawa
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Publication number: 20130017089Abstract: A double row tapered bearing assembly includes a first portion and a second portion. The first portion includes a first ring and a second ring. The first ring is connected with the second portion via at least one row of tapered rollers or balls. The second ring is also connected with the second portion via at least one row of tapered rollers or balls. The first ring and the second ring each includes at least one groove. The at least one groove in the first ring faces the at least one groove in the second ring to form a cavity. At least one member is placed in the cavity.Type: ApplicationFiled: July 14, 2011Publication date: January 17, 2013Inventor: Henrik Stiesdal
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Patent number: 8235598Abstract: A bearing apparatus includes two split outer ring halves disposed in close contact with each other and a plurality of rollers. A circumferential end of each of the split outer ring halves has a concave-and-convex shape including a first slope portion inclined with respect to a line extending along an axial direction of the split outer ring halves and a second slope portion inclined in an opposite direction to that of the first slope portion. Each of the rollers is provided with crowning so as to be shaped in barrel form, and an amount of crowning is set such that an apex of a projecting portion at the concave-and-convex shape of each of the split outer ring halves is located on an axially outer side of a rolling surface of the roller rolling on an inner peripheral surface of each of the split outer ring halves.Type: GrantFiled: December 3, 2008Date of Patent: August 7, 2012Assignee: JTEKT CorporationInventors: Junji Murata, Kazuyoshi Yamakawa
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Publication number: 20120087611Abstract: A bearing is provided that includes a first ring having at least one first raceway defined by a radially inward facing surface of the first ring; and a second ring concentric with the first ring and having at least one second raceway defined by a radially outward facing surface of the second ring. The bearing includes a plurality of rolling elements disposed between the first and second rings. The rolling elements rollingly engage the first and second raceways. The first ring has a first gap therein and the second ring has a second gap therein. One or more race reliefs extend into the first raceway and/or the second raceway.Type: ApplicationFiled: October 14, 2011Publication date: April 12, 2012Applicant: ROLLER BEARING COMPANY OF AMERICA, INC.Inventor: Alex Habibvand
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Patent number: 8136998Abstract: A bearing apparatus includes: two split outer ring halves which are mounted to the housing; a plurality of rolling elements which are provided so as to roll on the two split outer ring halves; and a cage which holds the rolling elements such that the rolling elements are disposed at substantially equal intervals in a circumferential direction of the cage and which is split at a position of the cage to form joint surfaces, an outside diameter of the cage being guided by inner circumferential surfaces of the split outer ring halves. An outside diametrical dimension in a normal direction to the joint surfaces is made larger than an outside diametrical dimension of the cage in a direction parallel to the joint surface, and vicinity of an outside diametrical position of the cage lying in the normal direction is made to be guided by the outer ring halves.Type: GrantFiled: December 9, 2008Date of Patent: March 20, 2012Assignee: JTEKT CorporationInventors: Junji Murata, Kazuyoshi Yamakawa, Kazutoshi Toda, Toshiyuki Saito, Shinya Ochi
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Patent number: 8128291Abstract: A needle roller bearing comprises an outer ring having a plurality of outer ring members split by a parting line extending in the axial direction of the bearing, a plurality of needle rollers rotatably arranged on the raceway surface of the outer ring, and a retainer retaining the plurality of needle rollers. A curvature radius r1 of the outer ring member and a curvature radius r2 of the outer diameter of the retainer has a relation such that 1<r1/r2<1.3.Type: GrantFiled: July 14, 2006Date of Patent: March 6, 2012Assignees: NTN Corporation, Honda Motor Co., Ltd.Inventors: Akihiko Katayama, Shinji Oishi, Yugo Yoshimura, Noriaki Fujii, Tomoya Fujimoto
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Publication number: 20120008893Abstract: A positioning protrusion 14 is provided in a center of an outer diameter surface of a halved outer ring 11a in both circumferential and axial directions. The positioning protrusion 14 is configured to engage with a housing, which is placed on an outer diameter side of the halved outer ring, to position the halved outer ring 11a with respect to the housing. A protruding portion 17a and a recessed portion 17b are provided in each abutting portions 16a, 16b where a pair of the halved outer rings 11a abut on each other when fitted on a rotary shaft that is supported by a roller bearing. The protruding portion 17a and the recessed portion 17b are configured to mesh with each other to restrict axial movement of both halved outer rings 11a. The protruding portion 17a and the recessed portion 17b are point-symmetric with respect to a center 20 of the positioning protrusion 14.Type: ApplicationFiled: February 18, 2010Publication date: January 12, 2012Applicant: NTN CORPORATIONInventors: Shinji Oishi, Yugo Yoshimura, Katsufumi Abe
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Patent number: 8007183Abstract: The invention relates to a double-row angular contact anti-friction bearing having a split outer bearing ring, a one-piece inner bearing ring, and anti-friction bodies located in two rows between the two rings. The outer bearing ring is split axially into two individual rings. To permit simple, reliable and secure transport of the bearing, the individual outer bearing rings are interconnected by a connecting element in a positive fit that allows play and the outer surfaces of the individual rings have at least one recess, which is spanned by the connecting element. At least the recess of an individual ring has a groove, in which a hook element on the connecting element engages in a positive fit and the individual rings can be twisted in relation to one another.Type: GrantFiled: February 14, 2007Date of Patent: August 30, 2011Assignee: Schaeffler KGInventors: Ralf Ansorge, Rudolf Zeidlhack
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Patent number: 8002473Abstract: A crankshaft has spaced-apart cheeks and a cylindrical surface between the cheeks. A split ring bearing assembly has first and second bearing parts that join to encircle the cylindrical surface. First and second split ring seal assemblies each have first and second seal parts that join to encircle and sealingly contact with the cylindrical surface on each side of the split ring bearing assembly. A journal includes a first and second journal halves having cylindrical recesses receiving the crankshaft so that the split ring bearing assembly bears upon the journal and the first and second split ring seal assemblies sealingly contact with the journal halves. A lube fill fitting is provided in the journal for the introduction of lubricant which is permanently sequestered between the first and second split ring seal assemblies to provide sealed lubrication of the split ring bearing assemblies.Type: GrantFiled: May 30, 2008Date of Patent: August 23, 2011Assignee: GM Global Technology Operations LLCInventors: Edward P. Becker, Anil K. Sachdev, Emerson J. Adams, Thomas A. Perry
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Patent number: 7896556Abstract: A needle roller bearing comprises an outer ring having a plurality of outer ring members split by split lines extending in an axial direction of the bearing, a plurality of needle rollers arranged on an orbit surface of said outer ring so that they can roll thereon, and a cage holding the needle rollers at intervals. The outer ring member has a projection serving as a positioning engaging part which engages with a housing for positioning, and an engaging click protruding from an axial end of the outer ring member inward along a diameter to prevent the cage from moving in an axial direction, in positions shifted from its circumferential center.Type: GrantFiled: March 13, 2006Date of Patent: March 1, 2011Assignees: NTN Corporation, Honda Motor Co., Ltd.Inventors: Yoshiyasu Nakano, Shinji Oishi, Katsufumi Abe, Akihiko Katayama, Yugo Yoshimura, Noriaki Fujii, Keiko Yoshida
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Patent number: 7896557Abstract: A needle roller bearing comprises an outer ring having a split part in a circumferential direction, a plurality of rollers which can roll along an inner diameter surface of the outer ring, and a cage holding the plurality of rollers. The outer ring has an engaging click protruding inward along a diameter at a width-direction end thereof to prevent the cage from moving in an axial direction.Type: GrantFiled: March 13, 2006Date of Patent: March 1, 2011Assignees: NTN Corporation, Honda Motor Co., Ltd.Inventors: Yoshiyasu Nakano, Shinji Oishi, Katsufumi Abe, Yugo Yoshimura, Noriaki Fujii, Keiko Yoshida
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Patent number: 7866891Abstract: A rolling bearing apparatus is provided that rotatably supports a cam shaft in a cylinder head of an engine. The rolling bearing apparatus includes a plurality of rolling elements; a cage that positions the rolling elements so as to be spaced at regular intervals from each other in a circumferential direction and that retains the rolling elements in a freely rotatable manner; a shell-type outer ring configured to receive the rolling elements and the cage and having a raceway surface of the rolling elements at an inner side thereof; and an outer ring fastening member formed of a material having almost the same thermal expansion coefficient as the shell-type outer ring and having a press-fit portion press-fitted to the shell-type outer ring.Type: GrantFiled: February 29, 2008Date of Patent: January 11, 2011Assignee: Jtekt CorporationInventors: Yoshitaka Waseda, Tsuyoshi Okumura
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Patent number: 7828485Abstract: The clearance between the outer peripheral surface of an annular portion of a cage and the inner peripheral surface of each of rib portions of outer-ring split pieces is set to be smaller than the clearance between the radial end surface of a projection portion of the cage and the inner peripheral surface of each of body portions of the outer-ring split pieces. When a centrifugal force due to engine rotation acts upon the cage, the inner peripheral surface of each of the rib portions of the outer-ring split pieces touches the outer peripheral surface of the annular portion of the cage before the inner peripheral surface of each of the body portions of the outer-ring split pieces touches the radial end surface of the projection portion of the cage. Thus, the radial displacement of the cage can be prevented in good time.Type: GrantFiled: March 20, 2008Date of Patent: November 9, 2010Assignee: JTEKT CorporationInventors: Yoshitaka Waseda, Tsuyoshi Okumura
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Publication number: 20090154862Abstract: A bearing apparatus includes: two split outer ring halves which are mounted to the housing; a plurality of rolling elements which are provided so as to roll on the two split outer ring halves; and a cage which holds the rolling elements such that the rolling elements are disposed at substantially equal intervals in a circumferential direction of the cage and which is split at a position of the cage to form joint surfaces, an outside diameter of the cage being guided by inner circumferential surfaces of the split outer ring halves. An outside diametrical dimension in a normal direction to the joint surfaces is made larger than an outside diametrical dimension of the cage in a direction parallel to the joint surface, and vicinity of an outside diametrical position of the cage lying in the normal direction is made to be guided by the outer ring halves.Type: ApplicationFiled: December 9, 2008Publication date: June 18, 2009Applicant: JTEKT CorporationInventors: Junji Murata, Kazuyoshi Yamakawa, Kazutoshi Toda, Toshiyuki Saito, Shinya Ochi
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Publication number: 20090142013Abstract: A bearing apparatus includes two split outer ring halves disposed in close contact with each other and a plurality of rollers. A circumferential end of each of the split outer ring halves has a concave-and-convex shape including a first slope portion inclined with respect to a line extending along an axial direction of the split outer ring halves and a second slope portion inclined in an opposite direction to that of the first slope portion. Each of the rollers is provided with crowning so as to be shaped in barrel form, and an amount of crowning is set such that an apex of a projecting portion at the concave-and-convex shape of each of the split outer ring halves is located on an axially outer side of a rolling surface of the roller rolling on an inner peripheral surface of each of the split outer ring halves.Type: ApplicationFiled: December 3, 2008Publication date: June 4, 2009Applicant: JTEKT CorporationInventors: Junji Murata, Kazuyoshi Yamakawa
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Publication number: 20090123104Abstract: A needle roller bearing comprises an outer ring having a plurality of outer ring members split by a parting line extending in the axial direction of the bearing, and a plurality of needle rollers rotatably arranged on the raceway surface of the outer ring. Thus, a non-contact length “L” between the outer ring members and the needle roller at an abutment part of the adjacent outer ring members, and an effective length “w” of the needle roller has a relation such that L/w<0.5.Type: ApplicationFiled: July 14, 2006Publication date: May 14, 2009Inventors: Katsufumi Abe, Shinji Oishi, Yugo Yoshimura, Noriaki Fujii, Tomoya Fujimoto
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Publication number: 20090016659Abstract: The invention relates to a double-row angular contact anti-friction bearing having a split outer bearing ring, a one-piece inner bearing ring, and anti-friction bodies located in two rows between the two rings. The outer bearing ring is split axially into two individual rings. To permit simple, reliable and secure transport of the bearing, the individual outer bearing rings are interconnected by a connecting element in a positive fit that allows play and the outer surfaces of the individual rings have at least one recess, which is spanned by the connecting element. At least the recess of an individual ring has a groove, in which a hook element on the connecting element engages in a positive fit and the individual rings can be twisted in relation to one another.Type: ApplicationFiled: February 14, 2007Publication date: January 15, 2009Applicant: SCHAEFFLER KGInventors: Ralf Ansorge, Rudolf Zeidlhack
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Publication number: 20080310787Abstract: A rolling bearing apparatus is provided that rotatably supports a cam shaft in a cylinder head of an engine. The rolling bearing apparatus includes a plurality of rolling elements; a cage that positions the rolling elements so as to be spaced at regular intervals from each other in a circumferential direction and that retains the rolling elements in a freely rotatable manner; a shell-type outer ring configured to receive the rolling elements and the cage and having a raceway surface of the rolling elements at an inner side thereof; and an outer ring fastening member formed of a material having almost the same thermal expansion coefficient as the shell-type outer ring and having a press-fit portion press-fitted to the shell-type outer ring.Type: ApplicationFiled: February 29, 2008Publication date: December 18, 2008Applicant: JTEKT CORPORATIONInventors: Yoshitaka Waseda, Tsuyoshi Okumura
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Publication number: 20080181549Abstract: A needle roller bearing comprises an outer ring having a split part in a circumferential direction, a plurality of rollers which can roll along an inner diameter surface of the outer ring, and a cage holding the plurality of rollers. The outer ring has an engaging click protruding inward along a diameter at a width-direction end thereof to prevent the cage from moving in an axial direction.Type: ApplicationFiled: March 13, 2006Publication date: July 31, 2008Inventors: Yoshiyasu Nakano, Shinji Oishi, Katsufumi Abe, Yugo Yoshimura, Noriaki Fujii, Keiko Yoshida
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Patent number: 7270484Abstract: The present invention provides a split outer race for use in a rolling bearing. The split outer race is formed by bending a strip-shaped metallic plate into a substantially semicircle shape. At least one end of the split outer race in a circumferential direction has a concave-and-convex shape including a first slope portion which is inclined to an axial direction and a second slope portion inclined in a direction opposite to a direction in which the first slope portion is inclined. An edge portion formed on an inner surface of the one end in the circumferential direction has a round shape.Type: GrantFiled: May 25, 2005Date of Patent: September 18, 2007Assignee: Koyo Seiko Co., Ltd.Inventor: Yoshitaka Waseda
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Patent number: 6979131Abstract: A multiple-row radial bearing with at least one bearing race and pertaining rolling bodies, with the bearing race having at least one central collar, is characterized in that the central collar of the bearing race is formed by a single-piece ring (11), which is provided with a slot (12) and has variable diameter, for insertion in a circumferential groove (10).Type: GrantFiled: December 21, 1998Date of Patent: December 27, 2005Assignee: Ina Wälzlager Schaeffler OHGInventors: Roland Lippert, Christoph Becker
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Patent number: 5971622Abstract: A divided type aligning rolling bearing comprises a spherical groove of a lower bearing housing for slidably receiving an outer peripheral surface in a spherical shape of an outer ring lower member. A dowel pin is provided on the outer peripheral surface of the outer ring lower member and fitted in a recess provided on the bottom of the spherical groove of the lower bearing housing so as to have a backlash. The range of the backlash is an aligning range. The outer ring lower member is rotated around the dowel pin, thereby causing both ends of the outer ring lower member to escape from the spherical groove. In order to allow the escape, the lower bearing housing is in a non-rib shape. The outer ring lower member is brought into a detachable state by changing the posture thereof in a stable state.Type: GrantFiled: April 22, 1998Date of Patent: October 26, 1999Assignee: Koyo Seiko Co., Ltd.Inventor: Naohisa Akazawa
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Patent number: 5961221Abstract: A cross roller that may rotate at a high speed with high precision is provided. A first conical roller 7 for receiving loads in a first axial direction B and a radial direction and a second conical roller 8 for receiving loads in a second axial direction A and the radial direction are alternatively held by an inner race 3 and an outer race 4. Also, a predetermined space 9 is provided between large end faces 7b and 8b of the first and second conical rollers 7 and 8 and orbital surfaces 4a and 4b of the outer race 4. Then, a seat ring 10 that is elastically deformable is provided in the space 9. By using the conical rollers 7 and 8, a slippage between the orbital surfaces 3a, 3b, 4a and 4b and the rollers 7 and 8 is prevented. Also, the seat ring 10 is elastically deformed so that a suitable pre-pressure is applied to the first and second conical rollers 7 and 8 by its restoring force.Type: GrantFiled: December 17, 1997Date of Patent: October 5, 1999Assignee: Namu Co., Ltd.Inventor: Ichirou Kamimura
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Patent number: 5882124Abstract: A needle bearing has an outer sleeve and a needle cage. The sleeve is punched out of a flat sheet of metal and is coiled to be cylindrical. It has a window, and the needle cage has a corresponding window. The needle cage is guided circumferentially and axially inside the sleeve in such a way that the windows are aligned relative to one another so that an actuating member can pass radially through both windows. The needle bearing may be used, for example, for guiding a pressure pin for a braking mechanism of a vehicle.Type: GrantFiled: November 25, 1997Date of Patent: March 16, 1999Assignee: The Torrington CompanyInventors: Karl Diemer, Juraj Orgonik, Werner Kupietz
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Split bearing, cage for split or non-split bearing and method of cutting a member of a split bearing
Patent number: 5630669Abstract: A split bearing, a cage for a split or non-split bearing and a method of cutting a member of a split bearing is related in this disclosure. The split bearing has at least one component, such as the outer race, split, i.e., formed into at least two parts, each part defining two longitudinally extending surfaces which mate with a corresponding longitudinal surface of the adjacent part such that the mating surfaces define a helix in their longitudinal extent. The cage of the split or non-split bearing includes two annular parts that in assembly define a plurality of cavities each one adapted to receive a roller member of the bearing. Each of the two annular parts including at least two pieces joined together by a tongue and groove connection. The method of cutting a member of a split bearing involves cutting the member longitudinally such that the cut mating surfaces, define a helix in the longitudinal direction.Type: GrantFiled: July 12, 1994Date of Patent: May 20, 1997Assignee: Craft Bearing Company, Inc.Inventor: Robert N. Stewart -
Patent number: 5590968Abstract: Apparatus comprising an inner member having an axis and an axially extending outer surface, an outer member having an axially extending inner surface, the inner and outer members being rotatable relative to each other about the axis, a bearing between the inner and outer surfaces, the bearing having a radially extending bearing surface, and a bearing retainer assembly including a first retainer which engages the bearing surface and which has a first tapered surface, a second retainer having a second tapered surface engaging the first tapered surface, an axially extending retainer surface engaging one of the inner and outer members, and a radially extending retainer surface, each of the first and second tapered surfaces tapering radially away from the one of the inner and outer members and axially away from the bearing, a spring engaging the retainer surface, and a cap which is fixed to the one of the inner and outer members and which engages the spring so that the spring is compressed between the cap and theType: GrantFiled: September 18, 1995Date of Patent: January 7, 1997Assignee: Harnischfeger CorporationInventor: Andrew P. Dretzka