Lip Seal Patents (Class 384/484)
  • Patent number: 11549002
    Abstract: A rubber composition includes: 100 parts by mass of a nitrile rubber (A); 10 to 300 parts by mass of a white filler (B); 0.3 to 10 parts by mass of a paraffin wax (C); and 0.5 to 5 parts by mass of a dithiocarbamic acid salt-based antioxidant (D). The nitrile rubber (A) has a content of an acrylonitrile unit of 19 to 30 mass %, and the paraffin wax (C) has a melting point of 45 to 100° C.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: January 10, 2023
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventors: Taiga Kunii, Kazushi Sakate
  • Patent number: 11405707
    Abstract: An operating device includes: an operating member operable by a user; a rotation shaft having an end portion provided with the operating member; a first bearing supporting a first portion of the rotation shaft; and a second bearing supporting a second portion of the rotation shaft. The second portion is located nearer to the operating member than the first portion in an axial direction of the rotation shaft.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: August 2, 2022
    Assignee: YAMAHA CORPORATION
    Inventor: Shinichi Fujita
  • Patent number: 11391378
    Abstract: A butterfly valve that is capable of reducing torque and improves sealing performance. The butterfly valve 10 includes a shaft member 100, a tabular valve body that is provided on the shaft member 100, a case 310 that is attachable to and detachable from a through-hole 510 formed in an attachment member 500 to which the butterfly valve 10 is configured to be attached, a pair of bearings 320 that is provided in the case 310 and rotatably supports the shaft member 100, and a magnetic fluid seal that is provided between the pair of bearings 320 in the case 310 and seals an annular gap between the case 310 and the shaft member 100.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: July 19, 2022
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Daiki Sumikawa
  • Patent number: 11286981
    Abstract: A flanged bearing outer ring unit includes an outer ring formed from metal and having a sliding interface and a polymeric flange attached to the sliding interface by overmolding and/or injection molding, and, optionally including an embedded metal or organo-sheet reinforcement. Also a method and a molding form for forming the flanged bearing outer ring unit.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: March 29, 2022
    Assignee: SKF AEROSPACE FRANCE S.A.S
    Inventor: Rémi Sarlin
  • Patent number: 11268572
    Abstract: A rolling-sliding member that is high in hardness and continues to have a passivation film reliably even after being subjected to a process that does not require any processing for removal of scale, etc., as well as a rolling bearing using the same and a method for manufacturing the rolling-sliding member.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: March 8, 2022
    Assignees: JTEKT CORPORATION, DAIDO STEEL CO., LTD.
    Inventors: Nao Inazaki, Fumihiro Furukawa, Kanji Kawasaki, Hisato Nishisaka, Tomoya Hattori, Kazuhisa Kitamura, Yusuke Kusafuka, Keita Hinoshita, Hiroyuki Takabayashi, Kazuhisa Ishida
  • Patent number: 11255382
    Abstract: A seal assembly includes a housing defining a bore and a shaft received in the bore. A seal member is secured to the housing for sealing a gap between the housing and the shaft. A slinger is secured to the shaft. The slinger being made from plastic and including a first semi-circular part and a second semi-circular part that is secured to the first semi-circular part. The slinger includes a radially extending wall portion with a raised bumper feature at a radially outer surface opposing the seal member. The slinger further includes an axially protruding labyrinth feature extending from the radially extending wall portion and toward the seal member. The first semi-circular part and the second semi-circular part can be snap fit to one another.
    Type: Grant
    Filed: March 8, 2020
    Date of Patent: February 22, 2022
    Assignee: FREUDENBERG-NOK GENERAL PARTNERSHIP
    Inventor: Kah Fei Neoh
  • Patent number: 11079020
    Abstract: A seal ring is provided for sealing a rotating shaft. The seal ring has an outer wall and an inner wall. The outer wall includes one or more external ribs, and the external ribs are disposed along a circumferential direction of the outer wall. The inner wall includes one or more seal contact parts extending inwards from the inner wall, and the seal contact parts are disposed along a circumferential direction of the inner wall. The seal ring is made of an elastic material.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: August 3, 2021
    Assignee: Illinois Tool Works Inc.
    Inventor: Yue Ma
  • Patent number: 11067119
    Abstract: A wheel hub and slinger assembly includes a wheel hub including a base surface, a tolerance compensation portion extending from the base surface and formed to be concave in an axially outward direction, and a flange surface extending from the tolerance compensation portion in a radially outward direction, and a slinger including a mounting portion having an axially inward end portion and a first inner peripheral surface and configured to be press-fitted to the base surface, a bent portion having a second inner peripheral surface spaced apart from the tolerance compensation portion and extending from the mounting portion in a curved surface shape, and an extending portion extending from the bend portion and having a contact surface in contact with the flange surface in the radially outward direction. A stopper having an axially outward end portion surface and a radially outward end portion surface is formed on the wheel hub.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: July 20, 2021
    Assignee: ILJIN GLOBAL CO., LTD
    Inventor: Jong Keun Lim
  • Patent number: 11053980
    Abstract: A rolling-element bearing unit includes at least one outer ring, at least one inner ring, a plurality of rolling elements disposed between the at least one outer ring and the at least one inner ring that are in contact with the at least one outer ring and the at least one inner ring and at least one auxiliary ring attached to an axial end region of the outer ring. The auxiliary ring may include a seal assembly and may be connected to the at least one outer ring with a snap fit.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: July 6, 2021
    Assignee: AKTIEBOLAGET SKF
    Inventors: Ludwig Edelmann, Dominic Namyslo, Matthias Schuler, Johannes Zang
  • Patent number: 10746229
    Abstract: According to one embodiment of the present disclosure, a sealing device of a wheel bearing may be disposed axially outside of rolling elements and may be mounted between an outer ring and a hub. The sealing device of the wheel bearing may comprise an outer ring slinger mounted on the outer ring, a hub slinger mounted on the hub, and a deviation-preventing protrusion which protrudes from an outer circumferential surface of the hub to hold an axial inner end of the hub slinger when the hub slinger moves inward in an axial direction. The outer circumferential surface of the hub may meet the deviation-preventing protrusion at right angles.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: August 18, 2020
    Assignee: ILJIN GLOBAL CO., LTD.
    Inventor: Jong Keun Lim
  • Patent number: 10619674
    Abstract: A bearing assembly includes an outer ring, an inner ring, a cage between the inner ring and the outer ring, a plurality of rolling elements disposed in the cage, and at least one seal unit configured to seal an interior of the bearing assembly on one side with respect to an outer space. The seal unit includes a carrier element and an elastomer element attached to the carrier element, and a ring is mounted axially between the plurality of rolling elements and the carrier element, in the carrier element, for example, which ring is spaced from the cage and distinct from the cage.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: April 14, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Rico Dittmar, Fabricio Teixeira
  • Patent number: 10527091
    Abstract: In a self-aligning roller bearing, in a longitudinal section including a center line of a spherical roller and an axis of the self-aligning roller bearing, a clearance X between an outer end surface of a spherical roller on an axially outer side of the self-aligning roller bearing and a rib portion, and a clearance Y between an inner end surface of the spherical roller on an axially inner side of the self-aligning roller bearing and a guide ring have a relation of X<Y.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: January 7, 2020
    Assignee: JTEKT CORPORATION
    Inventor: Hirotaka Yasuda
  • Patent number: 10458468
    Abstract: A roller assembly includes an outer ring having an interior area defined by an inner surface extending between a first and second axial end thereof. The inner surface has a bearing surface. A flanged headed shaft having an exterior bearing surface extends into the interior area. The shaft has a circumferential retainer receiving surface thereon. Two rows of rollers are positioned in the interior area with a spacer ring therebetween. A retainer ring is secured to the retainer receiving surface. The two rows of rollers and the spacer are axially retained on the shaft by and between the flanged head and the retaining ring so that the roller assembly withstands an axial load of up to 100 percent of an applied radial load.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: October 29, 2019
    Assignee: Roller Bearing Company of America, Inc.
    Inventors: Roman Malychok, Lyudmyla Malychok
  • Patent number: 10066663
    Abstract: A tapered roller bearing is disclosed having a support for pressing roller bodies and a holder for holding an outer ring. A method for producing the tapered roller bearing and a method for mounting a tapered roller bearing are also disclosed.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: September 4, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Bernhard Wilm
  • Patent number: 10054229
    Abstract: A seal arrangement for sealing a radial gap between an inner component and an outer component coaxially mounted around the inner component is provided. The inner component rotates about a rotation axis. The arrangement provides a radial seal connectably mounted to the inner component. The radial seal has a sealing lip that bears against a counterface formed by a radially inner surface of the outer component. When the seal arrangement is stationary, the sealing lip bears against the counterface with an initial lip force. The sealing lip is pivotably arranged in a radial cross section around a pivot point, and is in connection with a counterweight. The sealing lip and the counterweight are arranged in different axial regions from the pivot point and are adapted such that during rotation of the radial seal, a greater centrifugal force acts on the counterweight than on the sealing lip.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: August 21, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventors: Michel Organisciak, Pieter Baart, Claudio Foti
  • Patent number: 9797449
    Abstract: A tapered roller bearing includes an outer ring, an inner ring, a plurality of tapered rollers, and a lubricant holding member. The lubricant holding member is provided integrally with the outer ring. The lubricant holding member includes a tubular portion and an annular portion. The tubular portion extends in an axial direction of the outer ring. The tubular portion is positioned at a first end of the outer ring in the axial direction. The annular portion extends inward in a radial direction of the outer ring, from the first end of the tubular portion in the axial direction. A plurality of recessed portions is formed in an inner peripheral surface of the tubular portion in juxtaposition in the circumferential direction.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: October 24, 2017
    Assignee: JTEKT CORPORATION
    Inventor: Akiyuki Suzuki
  • Patent number: 9638255
    Abstract: A rolling bearing includes an inner race, an outer race, a row of rolling elements disposed between the inner and outer races, and a first seal fixed to one of the inner and outer races. The first seal includes at least one sealing lip cooperating with the other of the inner and outer races. The rolling bearing further includes a second seal fixed to the other of the inner and outer races. The first seal includes at least one sealing lip cooperating with the first seal.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: May 2, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Benoit Arnault, Eric Baudez, Mickael Chollet, Philippe Walter
  • Patent number: 9494197
    Abstract: This method is for replacing sealing elements on a rolling bearing assembly comprising a rotatable element, a fixed element, and at least one bearing mounted between the rotatable element and the fixed element, at least one used sealing element being rotatably fastened to at least one of the rotatable element and the fixed element and having at least one sealing lip adapted to lay on a first surface of the element with respect to which the used sealing element rotates. The method comprises a step of mounting at least one replacement sealing element so that at least one sealing lip of the replacement sealing element lays on a second surface of the element with respect to which the used sealing element and the replacement sealing element rotate, this second surface being located at a predetermined distance of the first surface.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: November 15, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Bruno Capoldi, Siegfried Derrer, Matthias Krebs
  • Patent number: 9488278
    Abstract: A static sealing device for a wheel hub comprising an inner ring associated with an outer ring of a constant velocity joint coupled with the wheel hub. A first sealing assembly is integrated between the inner ring and an outer ring of the wheel hub to protect respective rolling bodies. A second sealing assembly is integrated between the wheel hub and the outer ring of the joint. The first sealing assembly includes a shield fitted to the inner ring with a sleeve portion thereof and a flange portion extending towards the joint carrying an annular signal generating element and a tubular support element which projects axially from the flange portion. The second sealing assembly includes a tubular core having opposite ends embedded in an elastomeric material forming a sealing lip towards the joint and an elastically deformable annular tooth for engaging with a complimentary feature of the tubular support element.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: November 8, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Fabio Nosenzo, Vincenzo Ferraro
  • Patent number: 9415656
    Abstract: A synthetic resin-made sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a vehicle body side through a mounting member; a reinforced synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; and a synthetic resin-made sliding bearing piece 5 disposed in a space 4 between the upper casing 2 and the lower casing 3.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: August 16, 2016
    Assignee: Oiles Corporation
    Inventors: Yoshikazu Sakairi, Katsunori Saito, Robert Hamrodi, Kai Metzler, Yoshiteru Igarashi
  • Patent number: 9371860
    Abstract: A hub-bearing assembly including a rolling bearing having an outer ring, at least an inner ring and at least a row of rolling bodies is provided. The rolling bearing including a housing containing the rolling bearing and having an annular cylindrical shape, the housing at one end forming a radial flange, a closing cap, assembled on the housing at the opposite end with respect to the end, where the housing forms the flange, the cap being cup shaped and having a bottom wall, transverse to the rolling bearing axis, and a side wall, constrained to the bottom wall. First assembly means provided on the housing external wall, the first assembly means being fixed and localized in angular correspondence with the ribs and cooperating with second assembly means, movable and realized on the internal surface of the side wall for assembling, in a dismantled way, the cap on the housing.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: June 21, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Luca Ciulla, Ferdinando Patalacci
  • Patent number: 9222508
    Abstract: A bearing race encapsulation apparatus, which has a spring assembly integrated into a hearing that allows the hearing to compensate for varying expansions and contractions caused by differences in temperature. The bearing race encapsulation apparatus includes an outer bearing ring with an end face and an outer face with a indent formed in the outer face. An encapsulation ring, which has a retention element that is snapped into the indent of the outer bearing ring, a first segment that extends axially outwardly from the retention element, and a second segment that extends radially inwardly from the first segment. A spring is arranged axially between the second segment of the encapsulation ring and the outer bearing ring to compensate for the expansion and contraction.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: December 29, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: James Kevin Brown, Charles Schwab, Jordan Miles, Michael Turner, Brian Lee, Guihui Zhong, Marion Jack Ince
  • Patent number: 9145921
    Abstract: A radial-roller antifriction bearing arrangement, in particular for a needle sleeve (1), which includes a thin-walled outer ring (4), which can be inserted into a bore (2) of a housing (3) and which has two radially inwardly directed rims (5, 6), and of a needle ring (7) which is held in the outer ring (4) by said rims (5, 6). Here, the needle ring (7) is formed by a needle cage (8) and by a multiplicity of bearing needles (9) guided therein at uniform intervals in the circumferential direction, which bearing needles roll on the inner lateral surface (10) of the outer ring (4) and on the outer lateral surface (11) of a shaft (12) to be mounted or of a separate inner ring. Furthermore, axially adjacent to the side surfaces (13, 14) of the needle cage (8) there are arranged at least two seals (15, 16) which protect the needle sleeve (1) against dirt from the outside and against loss of lubricant.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: September 29, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Johannes Enders
  • Patent number: 9133881
    Abstract: A radial roller bearing assembly, in particular for a needle bush (1), which substantially comprises a thin-walled outer ring (4), which can be inserted into a bore (2) or a housing (3), having two ribs (5, 6) directed radially inward, and a needle cage assembly (7) that is held in the outer ring (4) by said ribs (5, 6). According to the invention, the needle cage assembly (7) is formed by a needle cage (8) and a plurality of bearing needles (9) guided therein in the circumferential direction at regular distances, which roll on the inner shell surface (10) of the outer ring (4) and on the outer shell surface (11) of a shaft (12) to be borne or a separate inner ring. Furthermore, at least two seals (15, 16) are arranged axially next to the side surfaces (13, 14) of the needle cage (8) which protect the needle bush (1) from contamination from the outside and from the loss of lubricant.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: September 15, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Heinz Schaefers, Johannes Enders
  • Publication number: 20150147013
    Abstract: Provided is a hub unit bearing wherein a cover can be firmly fitted with an outer ring member, and it is difficult for foreign matter to enter inside through a water drainage hole formed in the cover. The cover that covers the inside end section in the axial direction of the hub unit bearing includes a disk section, a small-diameter cylindrical section bent in the axial direction from the outer perimeter edge section of the disk section and a large-diameter cylindrical section. A cut and raised section that is cut and raised toward the inside in the radial direction is formed in the small-diameter cylindrical section, and a water drainage hole that passes through from inside to outside the cover is provided in the portion that is cut and separated from the small-diameter cylindrical section.
    Type: Application
    Filed: October 16, 2014
    Publication date: May 28, 2015
    Inventor: Yoshio KANEKO
  • Publication number: 20150110430
    Abstract: A bearing assembly is provided. The assembly includes a plurality of tapered rollers and a plurality of spherical rolling elements. A first inner ring defines a first inner raceway on which the plurality of tapered rollers run, and a second inner ring defines a second inner raceway on which the plurality of spherical rolling elements run. A unitary outer ring includes a first portion defining a first outer raceway on which the plurality of tapered rollers run, and a second portion defining a second outer raceway on which the plurality of spherical rolling elements run.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 23, 2015
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Yohannes Haile, Rohan Dubey, Zheng Wang, Shaun Tate
  • Patent number: 9004269
    Abstract: A conveyor chain constructed so as to prevent a leakage of lubricant oil to the outside. The conveyor chain comprises a plurality of bearing elements operable to revolve in a raceway between an outer circumferential surface of a bush and an inner circumferential surface of a roller. A pair of right and left thrust bearing annular members are press-fitted onto the outer circumferential surface of the bush and are positioned between the inner side surface of an inner link plate and the outwardly-facing end surfaces of the bearing elements. Annular sealing members for sealing lubricant oil within bearing element raceway are disposed between the inner circumferential surface of the roller and an inner circumferential surface of the thrust bearing annular member. The sealing members slidably contact but are not deformed by the inner circumferential surface of the roller.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: April 14, 2015
    Assignee: Tsubakimoto Chain Company
    Inventors: Masatsugu Ueno, Makoto Fujiwara
  • Publication number: 20150098669
    Abstract: This rotative assembly comprises a first element rotating with respect to a second element around a rotation axis, at least one bearing arranged between the first and second element, and at least one sealing element arranged between the first element and the second element. The sealing element is housed in a peripheral groove provided on the first element, and comprises at least one sealing lip resting on a surface of the second element. The first element comprises an extraction groove realized on a radial surface of the first element, and which forms an empty space below an internal surface of the sealing element and creates an axial access to said empty space from an axial end surface of the first element.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 9, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventor: Denis CATALANO
  • Patent number: 8979386
    Abstract: A rolling-element bearing includes a first bearing ring (2) and a second bearing ring (4) opposing the first bearing (2) in a radial direction (3). A sealing element (6) of the rolling-element bearing includes a radially-encircling seal support (8) extending in the radial direction (3) by a predetermined distance towards the second bearing ring (4). The seal support (8) is interference-fit and removably attached to an axial end side (9) of the first bearing ring (2). A sealing lip (10) is attached to the seal support (8) and extends from an end of the seal support (8) opposite the first bearing ring (2) in the radial direction (3) up to a mating surface (12), which is part of the second bearing ring (2).
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: March 17, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Andreas Gruber, Henning Kern, Jochen Lorenscheit, Edgar Pickel
  • Publication number: 20150049972
    Abstract: A seal lip portion 9 includes a lip main body (9a) and a projecting section (16) protruding from a peripheral edge of the lip main body (9a) and slidingly engageable with an inner ring (1), and this projecting section (16) is made of a highly frictionally wearable material which allows the projecting section (16), when frictionally worn, to establish a non-contact or a light contact to such an extend as to result in a contact pressure that can be regarded as zero. A fitting section (13) fitted into a seal mounting groove (2b) in a seal member main body (8) is held in a drag-rotation preventive structure that prevents circumferential movement due to a drag-rotation relative to an outer ring (2).
    Type: Application
    Filed: January 9, 2013
    Publication date: February 19, 2015
    Inventors: Katsuaki Sasaki, Kyouhei Kageyama
  • Patent number: 8956052
    Abstract: A sealed anti-friction bearing (1), including an annular sealing washer (11, 12) which seals a rolling-body chamber (7) in the axial direction, wherein the sealing washer (11, 12) has a fastening section (14) for connecting it fixedly to a bearing ring (2) of the anti-friction bearing (1) so as to rotate with it, and wherein the sealing washer (11, 12) is anchored with its fastening section (14) in a circumferential groove (22) of the bearing ring. According to the invention, it is provided that the fastening section (14) has a first clamping element in the form of a barb (19) and a second clamping element in the form of an annular bead (20), and that the barb (19) and the bead (20) enter into a non-positive connection with oppositely lying surfaces of the groove (22).
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: February 17, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Felix Hofbauer, Rainer Schroder, Martin Grehn
  • Patent number: 8950946
    Abstract: A friction device for a bearing assembly includes an annular friction module defining a friction surface that extends around a revolution axis of the friction device and that is configured to lie against and to exert a friction torque on a cylindrical surface rotating with respect to the friction device, the friction surface being cylindrical before the friction device is mounted around the rotating cylindrical surface.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Andreas Gruber, Christian Kogler, Francois Niarfeix, Alexandre Taillepied
  • Publication number: 20140348454
    Abstract: An outer ring, an inner ring, and a ball, each of which is a bearing part, are made of a quench-hardened steel containing not less than 0.90 mass % and not more than 1.05 mass % of carbon, not less than 0.15 mass % and not more than 0.35 mass % of silicon, not less than 0.01 mass % and not more than 0.50 mass % of manganese, and not less than 1.30 mass % and not more than 1.65 mass % of chromium with the rest consisting of an impurity. A contact surface thereof with another part has a nitrogen concentration of not less than 0.25 mass %. A remaining austenite amount in the contact surface is not less than 6 volume % and not more than 12 volume %.
    Type: Application
    Filed: December 7, 2012
    Publication date: November 27, 2014
    Applicant: NTN CORPORATION
    Inventors: Takashi Ueno, Chikara Ohki, Daisuke Sato, Kyouhei Kageyama, Shougo Shimizu
  • Publication number: 20140348455
    Abstract: Construction of a rolling bearing with seal ring can be achieved in which, while securing the required seal performance, the rotation support portion can be made more compact by shortening the dimension in the axial direction of the installation space for an inner ring 3a, and torque can be lowered. A sliding contact edge 23 of a seal lip 12a that is provided around the inner-circumferential edge portion of a seal ring 5a on one end side in the axial direction comes in sliding contact with one end surface 24 of the inner ring 3a. The tip-end edge of a protruding portion 20 closely faces the surface of the inner ring 3a, forming a labyrinth seal 19 in this portion. With this construction, a stopper ring 17 for regulating the position in the axial direction of the inner ring 3a with respect to a shaft 15 is located so as not to protrude from the end surface in the axial direction of the rolling bearing 1a with seal ring.
    Type: Application
    Filed: August 2, 2012
    Publication date: November 27, 2014
    Applicant: NSK Ltd.
    Inventors: Dai Itou, Satoshi Oyama
  • Patent number: 8894289
    Abstract: A sealing device for an axle bearing includes a lubricant maintained on sliding contact surfaces, thereby suppressing elevation of torque due to the depletion of grease. A lubricant-adsorbing layer comprises a thickener and a binder. The lubricant comprises a base oil and a thickener. The thickener and the thickener are mutually attracted. A lubricant layer of a prescribed thickness is formed on the lubricant-adsorbing layer. This lubricant layer adheres closely to the lubricant-adsorbing layer making it difficult to separate the lubricant layer from the lubricant-adsorbing layer.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: November 25, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tasuku Sakurai, Morinobu Kawamura
  • Patent number: 8876394
    Abstract: In a rolling bearing with seal, an annular lip supporting portion having a larger thickness than that of a seal lip is formed on an inner periphery side of a seal member; the seal lip protruding on an inner peripheral surface of the lip supporting portion has: a cylindrical seal surface being in close contact with an outer peripheral surface of an inner race; and an inner side surface at least part of which in a region from an inner end of the seal surface to reach the lip supporting portion stands upright from the inner end of the seal surface in a direction perpendicular to a generating line of the outer peripheral surface of the inner race; and a width of the seal surface in an axial direction is set to be larger than a height of the seal lip in a radial direction.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: November 4, 2014
    Assignee: Keihin Corporation
    Inventors: Tomoaki Ohba, Takuya Usami
  • Patent number: 8864384
    Abstract: A seal lip having: a cylindrical seal surface in close contact with an outer peripheral surface of an inner race with outer side and inner side surfaces standing upright respectively from an outer end and an inner end of the seal surface and reaching a lip supporting portion of a seal member, and protruding on an inner peripheral surface of the lip supporting portion. The outer side surface is a perpendicular surface standing upright from the outer end of the seal surface in a direction perpendicular to a generating line of the outer peripheral surface of the inner race. The inner side surface includes: a perpendicular surface standing upright from the inner end of the seal surface in parallel with the outer side surface; and a conical surface inclined toward the outer side surface extending outward in a radial direction from an outer peripheral end of the perpendicular surface.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: October 21, 2014
    Assignees: Keihin Corporation, Minebea Co., Ltd.
    Inventors: Tomoaki Ohba, Takuya Usami, Kenichiro Nishimura, Akimi Furukoshi
  • Patent number: 8845200
    Abstract: A single-row deep groove ball bearing made substantially of an inner ring and an outer ring disposed coaxially thereto and balls disposed between the rings. The balls roll in deep groove tracks in an outer face of the inner ring and in an inner face of the outer ring, and the balls are held at equal distances to each other in the circumferential direction by a housing. The interior of the bearing is sealed by two circular ring-shaped seals axially opposite each other. At least one of the seals is a lip seal, which has an angular profile. A shape-stable radial seal leg of the seal is attached to the outer ring and forms a gap seal with an axial side of the inner ring, and a sealing lip, which is an overpressure valve, is disposed under the inner ring and slidingly contacts the inner face of the inner ring.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: September 30, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Ludwig Winkelmann
  • Publication number: 20140262383
    Abstract: A tilling implement for use with a farm vehicle includes a frame, a tilling element attached to the frame, a bearing assembly configured to allow the tilling element to rotate relative to the frame. The bearing assembly can include a first race, a second race spaced apart from the first race to define a gap therebetween, a bearing rotatably disposed within the gap to allow relative movement between the first race and the second race, a seal including a flexible protrusion having a distal end that presses against the first race to seal off the gap, and a stop positioned adjacent to the flexible protrusion configured to prevent the distal end of the protrusion from bending towards the bearing.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: David R. Smith, Thomas Steffan, Shawn Gerdeman
  • Patent number: 8827563
    Abstract: A seal, which has a core with a radially outwardly extending flange with an end surface and a sealing body with a sealing lip and an over-molded portion that extends radially outward beyond the flange and encompasses the end surface of the flange. Also, a bearing arrangement is disclosed which includes a bearing cup that has a counterbore with a conical inner surface, and a seal, which is contactable with the bearing cup, and has a core with a radially outwardly extending flange with an end surface and a sealing body with a sealing lip and an over-molded portion which extends radially outwardly beyond the flange and encompasses the end surface of the flange. The seal can be press-fit with the bearing cup such that the over-molded portion and the conical inner surface of the bearing cup are in tight contact with each other and form a static seal.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: September 9, 2014
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: John Tate, Stephen Carr, Craig Goddard
  • Patent number: 8828178
    Abstract: A sealing device which comprises a slinger fixedly fitted to the rotary side member, a core member fixedly fitted to the stationary side member, and an elastic sealing member fixed to the core member and having a seal lip which elastically and slidably contacts the slinger. The slinger comprises a fitting cylindrical portion to be fitted into the rotary side member, a brim portion extending its radial direction at one end of its outside relative to a sealed portion of the fitting cylindrical portion, and a rotary side fixing member fixed to the brim portion. Further, the slinger is made in such a manner that an adhesive layer is formed on its whole surface including a contacting side surface where the seal lip contacts by applying adhesive agent thereon, then the fixing member is integrally fixed thereto, thereafter the adhesive layer is partially removed only in the contacting side surface.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: September 9, 2014
    Assignee: Uchiyama Manufacturing Corp.
    Inventors: Hironori Yamamoto, Koki Ishida, Tatsuo Katayama, Tadashi Kasamoto, Yoshihiko Yamaguchi, Chihiro Asanuma
  • Patent number: 8770848
    Abstract: An axle bearing system includes a bearing portion which includes an inner ring, an outer ring and a plurality of rolling elements which are interposed between the inner ring and the outer ring and which is installed on a hub shaft with seal portions which are each formed by a slinger, a core metal and a non-conductive seal provided therebetween mounted in annular opening portions formed between the inner ring and the outer ring. A conductive body is attached to the seal portion so as to provide an electrical conducting state between the outer ring and the inner ring.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: July 8, 2014
    Assignee: JTEKT Corporation
    Inventors: Yutaka Koma, Shigeaki Furusawa, Keiichi Furukawa, Shigeru Inoue
  • Publication number: 20140177991
    Abstract: In a sealed rolling bearing for use in an environment where a large amount of water is splashed and the internal pressure of the bearing becomes negative, a ratio of the difference between an outer diameter of a seal sliding contact surface of an inner race and an inner diameter of a seal lip of an elastic seal member in its natural state to a diameter of a roll neck portion (shaft) on which the inner race is fitted is in the range of 0.27 to 0.40%. This provides reduced frictional heat generation of the seal lip and adequate pressing force applied to the seal lip, thus securing excellent seal performance without requiring an additional mechanism, such as a vent to a contact seal.
    Type: Application
    Filed: July 10, 2012
    Publication date: June 26, 2014
    Inventors: Tsukasa Toyoda, Yasuhiro Shimizu
  • Patent number: 8757886
    Abstract: A rolling bearing has an inner ring; an outer ring; a seal fixing groove provided at either the inner ring or the outer ring; a seal contact groove provided at either the inner ring or the outer ring on a side where the seal fixing groove has not been provided; and a sealing member with two ends. One end of the sealing member is fitted into the seal fixing groove, and the other end of the sealing member is configured not to contact the seal contact groove in a non-preloaded state but to contact the seal contact groove in an axial direction in a preloaded state. Further, a central line average roughness Ra of a contact surface of the seal contact groove to which the sealing member contacts is Ra?0.6 ?m.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: June 24, 2014
    Assignee: Minebea Co., Ltd.
    Inventors: Takuya Yamamoto, Hiroshi Komiyama
  • Publication number: 20140133792
    Abstract: A rolling contact bearing assembly includes a seal member having a seal lip segment. The seal lip segment includes a waist portion having, as viewed in a cross section, a bent V-shape such that a surface of the seal lip segment on outer side defines a relief recess and also includes a protrusion portion distal to the waist portion and having a tapered shape narrowing towards a free end thereof. The seal member installed in the bearing assembly applies urging force on one of inner and outer raceway rings, against change in degree of interference of the protrusion portion with the raceway ring. The protrusion portion includes such high wear material that rotation of the bearing assembly results in wear of the protrusion portion to cause the protrusion portion to make non-contact status or light contact status of a contact pressure of substantially zero.
    Type: Application
    Filed: June 21, 2012
    Publication date: May 15, 2014
    Applicant: NTN CORPORATION
    Inventors: Katsuaki Sasaki, Yoshiaki Ryouno, Shuguang Lian
  • Patent number: 8702313
    Abstract: A roller bearing assembly includes at least one roller bearing having an outer ring, an inner ring, and roller bodies disposed therebetween, as well as a radial shaft seal ring having a support ring and a seal lip. At least one end side of the outer ring includes a receptacle for retaining the support ring. The support ring extends axially in an outwardly projecting manner beyond the end side of the outer ring and up to an outer circumferential surface of the inner ring. The seal lip connected with the support ring sealingly abuts on the outer circumferential surface of the inner ring at a position that is axially internal of the end side of the outer ring.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: April 22, 2014
    Assignee: Aktiebolaget SKF
    Inventors: Baozhu Liang, Thomas Peuschel, Michael Reugels, Alfred Schwappach
  • Patent number: 8696211
    Abstract: A compact cassette seal and a corresponding wheel hearing for a passenger car or truck. The cassette seal has a bent sheet-metal ring which is and/or can be non-rotatably connected to a radially inner component and an annular sealing system which is non-rotatably connected to a radially outer component. The sealing system has a bearing ring and a radially peripheral seal with at least one sealing lip. The seal is secured to the bearing ring and the sealing lips resting on the bent sheet-metal ring in a sealing manner. A radially outer ring end section of the sealing system defines a labyrinth seal with a bent sheet-metal section of the bent sheet-metal ring. The bent sheet-metal section radially overlaps the ring end section on the exterior thereby forming an axially aligned or substantially axially aligned labyrinth seal section of the labyrinth seal.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: April 15, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Alexander Haepp, Robert Heuberger, Marc-Andre Schaefer, Wilhelm Walter
  • Patent number: 8668390
    Abstract: A radial shaft seal includes a seal ring connected to a support ring and having a seal lip that extends radially inwardly. A tension spring urges the seal lip radially inward against a seal raceway during operation of the radial shaft seal. A retaining device retains the tension spring and is radially supported on a rigid inner circumferential wall that radially surrounds the tension spring. The retaining device may be configured to at least one of: (i) limit a widening of the diameter of tension spring caused by centrifugal force to a predetermined upper limit and (ii) prevent the tension spring from flying off during operation at high rotational speeds.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: March 11, 2014
    Inventor: Ferdinand Schweitzer
  • Publication number: 20140064649
    Abstract: A retainer for a ball bearing includes two annular members that face each other in an axial direction thereof. The two annular members include opposed surfaces each having hemispherical pockets that are formed at positions in a circumferential direction of each of the two annular members and configured to receive balls. The opposed surfaces are snap-fitted to each other to couple together the two annular members. The hemispherical pockets each have an inner peripheral surface provided with ball contact and ball non-contact surfaces. The ball contact surface is formed at a central portion in a pocket circumferential direction and at least at a central portion in a pocket axial direction of the inner peripheral surface. The ball non-contact surface includes a recess recessed to an opposite side to a corresponding ball across the ball contact surface and is opened in at least one of pocket axial ends.
    Type: Application
    Filed: April 24, 2012
    Publication date: March 6, 2014
    Inventors: Shohei Fukama, Yasuyuki Katayama, Takahiro Okada, Katsuaki Sasaki
  • Patent number: 8628249
    Abstract: A sealed, single row angular contact ball bearing which has a seal arranged at both axial ends in a region of the rims. One bearing ring has on both sides one receiving opening for the sealing lip carrier and the associated other bearing ring has on both sides one sealing face for the sealing lip. The rims are coordinated with one another in such a way that receiving openings and sealing faces lie in one plane at the same radial spacing from a bearing axis. It is ensured in this way that the same seal can be used for sealing the angular contact ball bearing of generic configuration on both sides.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: January 14, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Ludwig Winkelmann, Harald Peschke, Dieter Jauernig