Patents Assigned to SKF
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Patent number: 8793998Abstract: A torque transmission device includes a first shaft is coaxially borne relative to a second shaft via at least one roller bearing. An adjusting device adjusts the amount of torque transmitted from the first shaft to the second shaft by changing the internal bearing friction experienced by the at least one roller bearing. In one embodiment, the adjusting device causes one ring of the at least one roller bearing to axially displace relative to a second ring of the at least one roller bearing, thereby changing the amount of bearing friction experienced by roller bodies disposed between the first and second rings and thus the amount of torque transmitted from the first shaft to the second shaft.Type: GrantFiled: December 10, 2009Date of Patent: August 5, 2014Assignee: Aktiebolaget SKFInventor: Marco Schmitt
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Patent number: 8794847Abstract: A bearing assembly includes an outer ring having an inner circumferential surface and a generally annular recess extending radially outwardly from the inner surface. An inner ring is disposed at least partially within the outer ring so as to be rotatable about a central axis, the inner ring having an outer circumferential surface spaced radially inwardly from the outer ring inner surface and at least one integral shoulder extending radially outwardly from the outer surface so as to be disposed at least partially within the outer ring recess. The shoulder is engageable with the outer ring when the inner ring is subjected to an axial force so as to substantially prevent axial displacement of the inner ring relative to the outer ring. Preferably, a plurality of rolling elements are disposed between and rotatably couple the inner and outer rings.Type: GrantFiled: May 11, 2012Date of Patent: August 5, 2014Assignee: Aktiebolaget SKFInventors: Herve Dondaine, David Sabatier, Anastazi Sarigiannis, Gabriel Michel
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Patent number: 8794862Abstract: A seal is for sealing an axial space between first and second axially-spaced members, the first member having a radial surface and the second member having an outer circumferential surface. The seal includes an annular body having inner and outer circumferential surfaces and first and second axial ends, a radial sealing surface proximal to the first end to sealingly engage with the first member radial surface, and a circumferential sealing surface proximal to the second end to sealingly engage with the second member outer surface. At least a portion of the seal body extends circumferentially about and encloses the axial space. The seal may be incorporated in a joint assembly for a linkage having first and second links, the assembly including a shaft coupled with the first link and a boss coupled with the second link, receiving the shaft, and defining an axial space in which the seal is disposed.Type: GrantFiled: August 31, 2011Date of Patent: August 5, 2014Assignee: Aktiebolaget SKFInventors: Tadd McBride, Christopher Hughes
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Patent number: 8796584Abstract: The present invention relates to a method of manufacturing a bearing component, in which a visually undetectable identification mark is created on a surface of the component by means of laser marking performed in a protective gas environment. The protective gas environment prevents the formation of a visible oxide layer, while the temperatures induced at the component surface and below the component surface, due to the laser marking, are sufficient to alter the microstructure of the bearing steel from which the component is made. The altered microstructure is revealable by applying an etchant to the visually undetectable mark, thereby allowing authentication of the bearing component.Type: GrantFiled: December 22, 2009Date of Patent: August 5, 2014Assignee: Aktiebolaget SKFInventors: John Van de Sanden, Hendrik Johannes Krock, Hendrik Anne Mol
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Publication number: 20140210424Abstract: A high speed energy storage flywheel comprises a rotor which is located in a vacuum chamber provided in a stator housing and is supported by magnetic bearings with respect to the stator housing. A fluid tank used for releasing in a controlled manner, a fluid inside the vacuum chamber and therefore create a braking effect on the rotor by friction.Type: ApplicationFiled: January 31, 2014Publication date: July 31, 2014Applicant: SKF MAGNETIC MECHATRONICSInventor: Ulrich Schroeder
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Publication number: 20140212082Abstract: A rolling-element bearing includes an inner ring made of steel and having an inner-ring raceway, an outer ring having an outer ring raceway, and ceramic rolling elements which roll on the inner-ring raceway and on the outer-ring raceway. The inner ring has been subjected to a heat treatment to harden it. The heat treatment is concluded with the performance of a final heat-treatment step at a predetermined temperature. In the inner ring, compressive residual stresses are formed in an outer layer by cold working in the region of the inner-ring raceway. The inner ring also has been subjected to a bluing treatment.Type: ApplicationFiled: January 28, 2014Publication date: July 31, 2014Applicant: Aktiebolaget SKFInventors: Juergen Gegner, Wolfgang Nierlich, Armin Herbert Emil August Olschewski, Arno Stubenrauch
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Publication number: 20140209353Abstract: A cable strain relief holder (1) for a spirally extending cable (2) is disclosed. In order to be able to fix a cable in a simple manner for the purpose of strain relief, the holder comprises a pillar element (3) which extends in an axial direction (a) and has an outer circumferential surface (4), and at least two retaining elements (5, 6), which are disposed extending radially (r) on the outer circumferential surface (4), wherein the at least two retaining elements (5, 6) are disposed at different axial positions and at different circumferential positions of the pillar element (3).Type: ApplicationFiled: October 1, 2013Publication date: July 31, 2014Applicant: Aktiebolaget SKFInventors: Jan Lietz, Hans Peter Panzer, Martin Voegelin
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Patent number: 8790021Abstract: The spacer is adapted for a rolling bearing comprising an inner ring, an outer ring and at least two rows of contact rollers disposed between raceways provided on the rings. The spacer comprises opposite inner and outer portions facing one another, a first lateral portion extending transversally between the inner and outer portions and connected to the portions, and a second lateral portion facing the first lateral portion and extending from the outer portion towards the inner portion. The inner and outer portions delimit together with the lateral portions a pocket configured to receive at least two superposed contact rollers. A free edge of the second lateral portion defines with the inner portion an aperture in order to open laterally the pocket on the side opposite to the first lateral portion.Type: GrantFiled: February 14, 2013Date of Patent: July 29, 2014Assignee: Aktiebolaget SKFInventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize
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Patent number: 8790013Abstract: A rolling element bearing comprises a groove with preferably an indentation in the bottom down the middle of the groove all around the bearing. The groove is to both accommodate a Bragg grated optical fiber and to increase the perceived sensitivity of the optical fiber by weakening the bearing and thereby creating larger deformation for specific loads/vibrations than if the groove was not there.Type: GrantFiled: November 26, 2010Date of Patent: July 29, 2014Assignee: Aktiebolaget SKFInventors: Adam Reedman, Hongyu Yang
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Patent number: 8790016Abstract: A bearing assembly comprises at least one bearing that includes at least one outer ring having a recess at at least one circumferential position. A bearing support has at least one receptacle that receives the at least one outer ring. At least one engagement element is disposed on or in the bearing support and engages in the recess in an interference-fit manner to prevent the rotation of the outer ring relative to the bearing support.Type: GrantFiled: October 25, 2010Date of Patent: July 29, 2014Assignee: Aktiebolaget SKFInventors: Jürgen Bitzl, Burkhard Buchheim, Alexander Dilje, Helmut Hauck, Stefanie Seufert
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Patent number: 8791661Abstract: A linear actuator comprising a spindle, a spindle nut, a transmission, an electrical motor, and an actuation element, is arranged to linearly move the actuation element by means of an interaction of the spindle and the spindle nut, which interaction is being driven by the electrical motor through the transmission. A position of the actuation element, the relative position between spindle and spindle nut, is determined by means of an absolute rotary position sensor and a counter. The counter keeps track of the number of under-flows and over-flows the absolute rotary position sensor generates during movement of the actuation element. A combination of a value from the absolute rotary position sensor and a count from the counter determines the position.Type: GrantFiled: July 30, 2010Date of Patent: July 29, 2014Assignee: Aktiebolaget SKFInventors: Johannes Andrianus Maria Duits, Mario Rossi
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Patent number: 8783959Abstract: A bearing cage has an annular structure with a plurality of pockets defined therein. At least one first surface area of the annular structure is made from, or is coated with, a first material having lipophobic and/or oleophobic properties. A rolling-element bearing includes this bearing cage, a plurality of roller bodies respectively disposed in the pockets, and a lubricant that forms a contact angle of at least 90° when disposed on the first material.Type: GrantFiled: December 10, 2012Date of Patent: July 22, 2014Assignee: Aktiebolaget SKFInventors: Cornelia Haag, Ingo Schulz
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Patent number: 8783967Abstract: This motor vehicle suspension stop comprises a first ring, a second ring, balls (26) bearing against two raceways (226, 246) respectively defined by the first ring and by the second ring, and a cage (30) for holding the balls between the raceways. The cage (30) is provided with abutment pins (50), each for bearing against one of the raceways (226, 246), thereby avoiding direct contact between the cage (30) and the adjacent edges (225, 227, 245, 247) of the rings. These pins (50) are distributed on either side of a radial midplane (P30) of the cage (30) that contains the centers of cells in the cage. The axial distance (d50) between the ends (52) of the abutment pins (50) is strictly less than the minimum distance (D28) between the raceways (226, 246).Type: GrantFiled: June 9, 2010Date of Patent: July 22, 2014Assignee: Aktiebolaget SKFInventors: Bruno Montboeuf, Florence Crenn, Richard Corbett
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Publication number: 20140199012Abstract: A hub bearing assembly includes a hub made of lightweight metallic material and forming a cylindrical portion, on which a tubular inner ring providing a raceway is mounted; a second inner ring is fixed on the first tubular inner ring and provides a second raceway; a cylindrical interstice is formed between the cylindrical portion of the hub and the tubular inner ring and contains a bonding brazing material which integrally joins the hub to the first tubular inner ring.Type: ApplicationFiled: January 13, 2014Publication date: July 17, 2014Applicant: Aktiebolaget SKFInventors: Stefano Galfre', Antonio Ruiu, Laura Sguotti
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Publication number: 20140199013Abstract: A hub bearing assembly includes a hub made of lightweight metallic material and forming a cylindrical portion, on which a tubular inner ring providing a raceway is mounted; a second inner ring is fixed on the first tubular inner ring and provides a second raceway; a cylindrical interstice is formed between the cylindrical portion of the hub and the tubular inner ring and contains a structural adhesive which integrally joins the hub to the first tubular inner ring.Type: ApplicationFiled: January 13, 2014Publication date: July 17, 2014Applicant: Aktiebolaget SKFInventors: Wijbe BUISING, Alessandro Garrone, Cornelius Petrus Antonius Vissers
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Publication number: 20140197678Abstract: A hub unit includes a hub of light material forming a cylindrical portion, a flange and a radial recess having a surface facing the flange, and two bearing rings axially aligned around the cylindrical portion of the hub; a sleeve locking device is radially interposed between the cylindrical portion of the hub and the bearing rings, and comprises a retaining portion engaged in the radial recess of the hub, a terminal edge which preloads the bearing rings, and one or two cuts extending in an axial direction.Type: ApplicationFiled: January 13, 2014Publication date: July 17, 2014Applicant: Aktiebolaget SKFInventors: Davide Antonio Olivieri, Jan Arie Pieter van Riet, Laura Sguotti
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Publication number: 20140197677Abstract: A hub unit is provided with a hub made of an aluminum alloy for plastic processing, which forms, in a single piece, an axially extending cylindrical portion and a radial flange; two bearing rings are mounted axially aligned around the cylindrical portion, an axially inner edge of the cylindrical portion is plastically deformed in a radially outer direction against the axially inner bearing ring.Type: ApplicationFiled: January 13, 2014Publication date: July 17, 2014Applicant: Aktiebolaget SKFInventors: Davide Antonio Olivieri, Laura Sguotti
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Publication number: 20140199179Abstract: A hybrid magnetic suspension of a rotor (1) having compressor wheels (2, 3) having permanent magnets (104, 114) integral to shrunk fit rings (8, 18) arranged on the rotor (1) in the vicinity of the compressor wheels (2, 3), permanent magnets (124, 134) integral to stationary rings (23, 33) coaxially arranged with the rotor (1) and associated with a resilient material (5, 15) to define a passive radial magnetic bearing, coils (6, 16) associated with magnetic armatures (10, 20) and facing rotor parts (7, 17) being located perpendicularly to the rotor (1), and axial sensors (60, 160) configured for sensing the axial position of the rotor (1) and control means (200) configured for feeding the coils (6, 16) as a function of the outputs of the axial sensors (60, 160) for generating both axial bearing forces and a motor torque and thereby being adapted for defining an axial bearingless motor.Type: ApplicationFiled: December 26, 2013Publication date: July 17, 2014Applicant: Aktiebolaget SKFInventors: Joaquim Da Silva, Yves Dupuis, Olivier Lemarchand, Lateb Ramdane, Erwan Salahun, Ulrich Schroeder
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Patent number: 8777494Abstract: This rolling bearing (1) comprises an inner ring (2), an outer ring (3), rolling members (5) placed in a rolling bearing chamber (4) arranged between the inner and outer rings, a bistable washer (7) capable of selectively taking one of two predetermined configurations, and an annular flange (8) partly delimiting the rolling bearing chamber (4) and mounted on a first ring (3; 2) of the inner and outer rings. The flange (8) extends radially from the first ring (3; 2) and is axially aligned with the second ring (2; 3).Type: GrantFiled: September 15, 2009Date of Patent: July 15, 2014Assignee: Aktiebolaget SKFInventor: Benoit Arnault
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Patent number: D710563Type: GrantFiled: November 14, 2012Date of Patent: August 5, 2014Assignee: Aktiebolaget SKFInventors: Hans-Peter Panzer, Martin Vögelin
