公开(公告)号：US11885373B2

公开(公告)日：2024-01-30

申请号：US16933530

申请日：2020-07-20

申请人： JTEKT Bearings North America LLC

发明人： Scott Abrahamson

IPC分类号： F16C19/36 ,  F16C33/58 ,  F16C33/64

CPC分类号： F16C19/361 ,  F16C33/585 ,  F16C33/64

摘要： A roller bearing assembly including an tapered inner cup defining an inner raceway, an tapered outer cup defining an outer raceway, the outer raceway having a convex profile, the convex profile being defined by an intersection of the outer raceway and a central plane in which a longitudinal center axis of the roller bearing assembly lies, and a plurality of straight rollers disposed between the tapered inner cup and the tapered outer cup so that each straight roller is in rolling contact with the inner raceway and the outer raceway, each straight roller having a first end face, a second end face and a cylindrical body extending therebetween.

公开(公告)号：US11851627B2

公开(公告)日：2023-12-26

申请号：US17605570

申请日：2020-04-20

申请人： NTN CORPORATION

发明人： Ryouta Kondou ,  Takayuki Kawamura

IPC分类号： C10M135/10 ,  C10M117/02 ,  C10M117/06 ,  C10M137/10 ,  C10M169/06 ,  F16C19/36 ,  F16C19/38 ,  F16C33/61 ,  C10N10/02 ,  C10N10/04 ,  C10N20/02 ,  C10N30/06 ,  C10N30/08 ,  C10N40/02 ,  C10N50/10

CPC分类号： C10M135/10 ,  C10M117/02 ,  C10M117/06 ,  C10M137/10 ,  C10M169/06 ,  F16C19/36 ,  F16C19/38 ,  F16C33/61 ,  C10M2203/1006 ,  C10M2207/1236 ,  C10M2207/1265 ,  C10M2207/2805 ,  C10M2219/046 ,  C10M2223/045 ,  C10N2010/02 ,  C10N2010/04 ,  C10N2020/02 ,  C10N2030/06 ,  C10N2030/08 ,  C10N2040/02 ,  C10N2050/10

摘要： To provide a grease composition for a tapered roller bearing having superior bearing lifetime under a condition of high temperature and a condition of high load, and a tapered roller bearing in which the grease composition for the tapered roller bearing is filled. A tapered roller bearing 11 includes an inner ring 12 having a raceway surface 12a, an outer ring 13 having a raceway surface 13a and a plurality of tapered rollers 14, and a flange part of the inner ring 12 gets into sliding contact with the tapered rollers 14. Grease 16 is filled around the tapered rollers 14. The grease 16 includes a base oil, a thickener and an additive. A frequency in which a storage modulus, which varies depending on frequency, of the grease 16 becomes minimum is equal to 7 Hz or more.

公开(公告)号：US11746656B1

公开(公告)日：2023-09-05

申请号：US16872593

申请日：2020-05-12

申请人： DL Technology, LLC

发明人： Jeffrey P. Fugere

IPC分类号： F01C21/10 ,  F01C21/02 ,  F04C2/16 ,  F04C2/107 ,  F16C19/36 ,  F16C19/14

CPC分类号： F01C21/10 ,  F01C21/02 ,  F04C2/107 ,  F04C2/16 ,  F16C19/14 ,  F16C19/364 ,  F04C2240/30 ,  F04C2240/50 ,  F04C2240/60 ,  F16C2326/58 ,  F16C2360/43

摘要： Provided is a feed screw assembly for a fluid dispense pump, comprising a feed screw; a feed screw shaft extending from the feed screw; a spanner nut about the feed screw shaft; a bearing assembly about the feed screw shaft between the spanner nut and the feed screw The bearing assembly includes an outer ring that directly abuts the spanner nut; and an inner ring that rotates inside and relative to the outer ring, wherein the inner ring is coupled to the feed screw shaft for rotating the feed screw, and wherein the inner ring is separated from the spanner nut by a gap.

公开(公告)号：US11739793B2

公开(公告)日：2023-08-29

申请号：US16942834

申请日：2020-07-30

申请人： Consolidated Nuclear Security, LLC

发明人： Justin T. Bolton

IPC分类号： F16C19/06 ,  F16C19/26 ,  F16C19/36 ,  F16C32/04 ,  F16C41/00 ,  F16C25/08 ,  F16D51/10

CPC分类号： F16C25/083 ,  F16C19/06 ,  F16C41/001 ,  F16D51/10 ,  F16C19/364 ,  F16C32/04

摘要： A self-governing bearing assembly is disclosed. The self-governing bearing assembly includes a stator and a rotor. The stator includes a brake contacting surface. The stator is one of an outer ring and an inner ring. The rotor includes the other of the outer ring and the inner ring, brake pads, and a circular spring. The brake pads are positioned radially from the brake contacting surface and adapted to rotate with the other of the outer ring and the inner ring. Each of the brake pads includes a pad retention slot. The circular spring is positioned within the pad retention slot of each of the brake pads. The bearing elements are axially aligned with a first bearing portion of the stator and a second bearing portion of the rotor. The bearing elements are adapted to rotationally support the rotor relative to the stator.

公开(公告)号：US11732752B2

公开(公告)日：2023-08-22

申请号：US17567972

申请日：2022-01-04

申请人： Siemens Gamesa Renewable Energy A/S

发明人： Vujadin Petronic ,  Søren Poulsen

IPC分类号： F16C19/36 ,  F16C33/78

CPC分类号： F16C19/361 ,  F16C33/7823 ,  F16C2360/31

摘要： Provided is a bearing unit for a rotor unit of a wind turbine, including a first bearing ring, a second bearing ring, a plurality of rolling elements and a sealing member including a sealing member base portion, a first sealing member tip portion and a second sealing member tip portion, wherein the first sealing member tip portion abuts a first wall of the first bearing ring and the second sealing member tip portion abuts a second wall of the bearing unit, wherein the sealing member is configured and arranged such that a first contact pressure between the first sealing member tip portion) and the first wall is transmitted through the sealing member to the second sealing member tip portion to increase a second contact pressure between the second sealing member tip portion and the second wall. Also provided is a wind turbine.

公开(公告)号：US11586787B2

公开(公告)日：2023-02-21

申请号：US17415834

申请日：2020-12-22

申请人： NSK Ltd.

发明人： Yohei Murata ,  Tomohiro Motoda ,  Hideyuki Uyama

IPC分类号： G06F30/17 ,  F16C33/64 ,  F16C19/36 ,  F16C33/58 ,  F16C33/66 ,  G06F111/10

摘要： Provided is a friction design method capable of estimating sliding friction generated between mutual sliding surfaces of two sliding members lubricated with lubricant with high precision. The friction design method sets a friction coefficient μ in a sliding surface model corresponding to mutual sliding surfaces of two sliding members (2 and 3) lubricated with lubricant (step S1), and, based on a correlation between the friction coefficient μ and an oil film parameter (Λ(Rk) or Λ(Rk+Rpk)) calculated using a core portion level difference (Rk) or a sum of the core portion level difference (Rk) and reduced peak height (Rpk) as a parameter representing surface roughness in the sliding surface model (step S2), sets a target value for surface roughness of the sliding surfaces required to be controlled as a product (steps S3 to S6).

公开(公告)号：US20230033801A1

公开(公告)日：2023-02-02

申请号：US17389431

申请日：2021-07-30

申请人： Rivian IP Holdings, LLC

发明人： Mason Verbridge ,  Ana Sopalovic ,  Roy Darnell

IPC分类号： F16C35/073 ,  F16C33/58 ,  F16C19/36

摘要： An input gear assembly in which the input gear is coupled to the input shaft via a pair of spaced-apart pilot regions of the input shaft. One of the pilot regions is disposed adjacent to one of the bearings used, with the pilot region formed in or on the input shaft itself and engaging a corresponding internal surface of the input gear. Another of the pilot regions is formed in the inner bearing raceway of another of the bearings used, with the pilot region formed as an elongate portion of the inner bearing raceway of the input shaft and engaging another corresponding internal surface of the input gear. For manufacturing simplicity, this additional pilot region and the remainder of the elongate inner bearing raceway have the same material properties, surface treatment, straightness, and cylindricity. This arrangement prevents tilting of the input gear with respect to the input shaft and bearing shaft, thereby enhancing performance.

公开(公告)号：US20230018690A1

公开(公告)日：2023-01-19

申请号：US17777576

申请日：2020-11-20

申请人： Robert Bosch Automotive Steering Vendome

发明人： Laurent Fevre ,  Eddy Dupont

IPC分类号： B62D1/181 ,  B62D1/185 ,  F16C19/16 ,  F16C19/36

摘要： A sleeve of a steering column includes (i) an outer tube and an inner tube that are movable relative to each other, and (ii) an adjustment system. The adjustment system includes a screw for adjusting the axial position along an adjustment axis constrained to move in translation with a first of the two elements by at least two guide bearings for rotationally guiding the adjusting screw about the adjustment axis. At least one of the bearings supporting the adjusting screw is a guide bearing with axial force take-up for blocking the translational movement of the adjusting screw.

公开(公告)号：US11542982B2

公开(公告)日：2023-01-03

申请号：US17262862

申请日：2019-08-16

申请人： NTN Corporation

发明人： Takashi Kawai

IPC分类号： F16C19/36 ,  F16C33/36 ,  F16C33/58 ,  F16C33/64

摘要： A tapered roller bearing includes an inner ring having a tapered raceway surface and a large-collar surface on a large-diameter side of the raceway surface, and tapered rollers. Each of the rollers has a large end surface guided by the large-collar surface. When R represents a set curvature radius of the large end surface and RBASE represents a base curvature radius from a vertex of a cone angle of each of the tapered rollers to the large-collar surface, the base curvature radius RBASE is 100 mm or less, and a ratio R/RBASE of the set curvature radius R to the base curvature radius RBASE is set to 0.90 or less. When RACTUAL represents an actual curvature radius of the large end surface of each of the tapered rollers, a ratio RACTUAL/R of the actual curvature radius RACTUAL to the set curvature radius R exceeds 0.5.

公开(公告)号：US11518189B2

公开(公告)日：2022-12-06

申请号：US16715227

申请日：2019-12-16

申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

发明人： Yuki Maruta

IPC分类号： F16C19/38 ,  F16C19/56 ,  B60B27/02 ,  B60B27/00 ,  F16C19/36 ,  F16C33/76 ,  F16C19/54

摘要： A hub structure includes an axle housing, a hub having an insertion hole in a vehicle width direction through which the axle housing is inserted, and an inner bearing disposed between the hub and the axle housing in the insertion hole and rotatably supporting the hub with respect to the axle housing, and an oil seal disposed between the hub and the axle housing in the insertion hole on an inner side relative to the inner bearing in the vehicle width direction. A spacer is provided between the inner bearing and the oil seal in the insertion hole. The spacer has an outer end surface that is contactable with an inner end surface of an inner race of the inner bearing.