Patents Assigned to Aktiebolaget SKF
  • SEALING ASSEMBLY
    Publication number: 20150042044
    Abstract: A sealing assembly includes a seal support having a support ring made from an elastomeric material, at least one seal element having a ring made from a polymer material, and an abutment ring against which a radial portion of the seal element axially abuts. The seal element is connected in a materially-bonded manner to the support ring along a first radially outer portion of the seal element, and the seal element axially abuts on the abutment ring along a second radially inner portion of the seal element. The seal element and the abutment ring are free of any connection along the second radially inner portion of the seal element.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 12, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Helmut Benedix, Juergen Kurth, Willy Seewald, Roland Worsley
  • BEARING SYSTEM AND METHOD FOR OPERATING A BEARING SYSTEM
    Publication number: 20150043858
    Abstract: A bearing system for supporting components that are movable relative to one another includes at least one bearing and a preload mechanism for changing a preload of the at least one bearing based on an operating state of the bearing system, where the preload mechanism includes, for example, a piezoelectric element, a Peltier element, an expansion material or a micromechanical element.
    Type: Application
    Filed: August 5, 2014
    Publication date: February 12, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Wolfgang Aust, Hubert Herbst, Joerg Wainus, Volker Wendt
  • Encoder device for using a magnetic sensor arrangement and bearing unit comprising the same
    Patent number: 8950339
    Abstract: An encoder device for use in a magnetic sensor arrangement, comprising: a metallic ring having a set of clearances in a ferromagnetic material, wherein said clearances are arranged around a circumference of the metallic ring, wherein the metallic ring is configured to generate an oscillating magnetic induction in a nearby magnetic sensor upon rotation of the metallic ring, wherein the metallic ring is made of at least one flat and strip-like sheet metal material, two ends of which are joined to form a loop.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Arnaud Turmeau, Thierry Le Moigne
  • Roller bearing for a tunneller
    Patent number: 8950945
    Abstract: A roller bearing for a tunneller having an inner ring, an outer ring, two sets of rolling elements arranged between the tracks formed on the rings, the first set of rolling elements including at least one roller able to withstand axial stresses and the second set of rolling elements including an angular-contact roller that is able to withstand both radial and axial stresses, the inner and outer rings being concentric about an axis of rotation of the roller bearing. Each roller in the first set includes a first axis of revolution (Y1-Y1) inclined in relation to the axis of rotation (X-X) by a first angle (?1) of between 45° and 95° and each roller in the second set includes a second axis of revolution (Y2-Y2) inclined in relation to the axis of rotation (X-X) by a second angle (?2) of between 0° and 45°.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize
  • Instrumented bearing
    Patent number: 8950944
    Abstract: This instrumented bearing comprises a bearing and a sensor unit for sensing the angular position of the rotatable ring with respect to the fixed ring of the bearing, an encoder element which is fastened to the rotatable ring, and a sensing element fastened to the fixed ring, adapted to sense a parameter representative of the rotation speed of the rotatable ring. The sensing element is mounted in a casing fastened with the fixed ring. The casing provides a peripheral wall mounted on the fixed ring and which includes at least one snap portion adapted to be received in a recess of a surface of the fixed ring, and at least one axial blocking portion adapted to abut against a lateral surface of the fixed ring, perpendicular to the rotation axis of the instrumented bearing. Each snap portion and each blocking portion alternate around a central axis (X6).
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Francois Niarfeix, Alexandre Taillepied
  • Friction device for a bearing assembly, bearing and bearing assembly comprising such a friction device
    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
  • Rod tensioning device
    Patent number: 8950292
    Abstract: A device is for tensioning a rod having a threaded portion and includes an actuator adapted to provide a tensioning axial force and a tie-rod adapted to transmit the axial force from the actuator to the threaded portion of the rod. The tie-rod includes a plurality of jaws, the jaws being movable radially between a closed position at which the jaws are engaged with the rod threaded portion and an open position at which the jaws are disengaged from the threaded portion, each jaw having an outer surface. A locking element includes a sleeve slidable axially along the tie-rod and disposable about the jaws, the sleeve having an inner frustoconical surface contactable with the outer surfaces of the jaws.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Didier Declerck, Valérie Loiseau
  • Wear-compensation device for a gear
    Patent number: 8950280
    Abstract: The wear-compensation device for a gear comprises a fixed support capable of being fixed axially on an external element in order to keep the device on the said external element, a bearing designed to be mounted on a shaft comprising one of the wheels of the gear, an eccentric mounted on the bearing and designed to be in contact with the external element, the said eccentric being able to move angularly relative to the fixed support. The device also comprises a torsion spring mounted axially between the fixed support and the eccentric and capable of exerting a circumferential preload force on the said eccentric, the said spring comprising a first end mounted inside a recess of the eccentric and a second end interacting with the fixed support.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Romuald Lescorail, Carole Girardin, Daniel Jansen
  • RAILWAY AXLEBOX ASSEMBLY AND RAILWAY AXLEBOX INCLUDING THE SAME
    Publication number: 20150036954
    Abstract: A railway axlebox assembly including a bearing including an inner ring adapted to be mounted on a shaft with an axial preload and an outer ring adapted to be mounted in a housing, a backing ring delivering axial support of the inner ring on an inner end portion of the shaft is provided. The assembly includes a seal that is disposed between the backing ring and the inner end portion of the housing. The sealing includes an elastomeric sealing lip bearing with a frictional contact on a sealing surface provided on the backing ring.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 5, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Thierry Le Moigne, Laurent Paulin
  • SEALING DEVICE FOR A HUB-WHEEL ASSEMBLY
    Publication number: 20150036957
    Abstract: A sealing device for a hub-wheel assembly that includes a rolling bearing is provided. The sealing device being has a screen assembled on an outer ring of the bearing and has an annular cylindrical wall, having an internal lateral surface press fit along an external lateral surface of a collar of the outer ring. The internal surface has a respective inner diameter (Di) and the external lateral surface has a respective outer diameter (De). A static sealing element is constrained to the screen; the ratio of the interference between inner diameter (Di) and outer diameter (De) over a screen thickness ranging between 0.22 and 0.5; a coupling length (L, L?) between the internal lateral surface and the external lateral surface is equal or greater than 5 mm; and a ratio between outer diameter (De) of the external lateral surface and coupling length (L, L?) ranging between 1 and 1.19.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 5, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Daniele Duch, Fausto Morello
  • Flanged bearing ring for the hub of a motor vehicle wheel and a method of manufacturing same
    Patent number: 8944522
    Abstract: A flanged bearing ring (10) for the wheel of a motor vehicle includes two different materials joined as a single piece: a tubular core (15) and an outer body (16) around the core. The outer body forms a radial flange (17) and is made of a lighter material than that of the core. At the axially outer end of the ring, at the side where the flange (17) is provided, the interface surfaces between the external body (16) and the core (15) terminate in a groove (21) formed partly in the outer body and partly in the core. The groove (21) accommodates a sealing ring of polymeric material (22) which is cast and continuously covers a circular separation line (23) at the axially outer end of the interface between the core (15) and the outer body (16).
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: February 3, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Andreas Knopf, Paolo Re
  • Flanged bearing ring for a bearing unit of a motor vehicle wheel
    Patent number: 8944523
    Abstract: A flanged bearing ring (10) for the wheel of a motor vehicle includes two different materials joined as a single piece: a tubular core (15) and an outer body (16) around the core. The outer body forms a radial flange (17) and is made of a lighter material than that of the core. At the axially outer end of the ring, at the side where the flange (17) is provided, the interface surfaces between the outer body (16) and the core (15) terminate in a groove (21) formed partly in the outer body and partly in the core. The groove (21) accommodates a sealing ring (22) made of rubber-like or elastomeric material which presses against both the outer body (16) and the core (15) so as to seal continuously, along an entire circumference around the axis (x), a separation line (23) between the core (15) and the outer body (16).
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: February 3, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Paolo Re, Cornelius Petrus Antonius Vissers
  • Roller screw
    Patent number: 8943920
    Abstract: The roller screw mechanism is provided with a screw comprising an external thread, with a nut arranged around and coaxial with the said screw, the nut comprising an internal thread, and with a plurality of rollers interposed between the screw and the nut and comprising flanks interacting with the said threads. The value of the opening angle ? of the flanks of the external thread of the screw is greater than the value of the opening angle of the flanks of the rollers.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: February 3, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Gerard Buvril, Philipp Krebs, Jean-Paul Giraudeau, Sebastien Lecluse
  • ROLLING BEARING TEMPERATURE MEASUREMENT SYSTEM IN A RAILWAY AXLE-BOX AND ASSOCIATED METHOD
    Publication number: 20150030052
    Abstract: A measurement system including: a radial external hole on a cover of a railway axle-box on the side of an edge of the cover facing towards a rolling bearing of the axle-box; a smaller axial hole made on the edge of the cover facing towards a ring of the bearing and opening in the radial hole; a cup-shaped body accommodated in the radial hole; a fork shaped spring integrally carried by a bottom wall of the cup-shaped body, projecting in front of the axial hole; a temperature probe slidingly accommodated within the axial hole and including a tubular element incorporating an electrical temperature sensor and an electric cable protruding from a first end of the tubular element accommodated within the cup-shaped body; and an abutting element removably coupled to the first end to cooperate with the spring, which pushes a second end of the probe out of the axial hole.
    Type: Application
    Filed: July 23, 2014
    Publication date: January 29, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Maurizio Martinetti, Mario Rossi, Silvano Sema, Fabrizio Sozzi
  • ROLLING BEARING AND INTERNAL COMBUSTION ENGINE EQUIPPED WITH SUCH A ROLLING BEARING
    Publication number: 20150027397
    Abstract: The invention relates to a rolling bearing provided with at least one row of rolling elements disposed between an inner raceway and an outer raceway. At least one of the raceways is coated with a tungsten sulphide (WS2) coating. The invention also relates to an internal combustion engine (M) having at least one balance shaft rotated by a crankshaft of the internal combustion engine (M), the at least one balance shaft being freely supported in rotation in a frame (B) of the internal combustion engine (M) by at least one such rolling bearing.
    Type: Application
    Filed: July 28, 2014
    Publication date: January 29, 2015
    Applicant: Aktiebolaget SKF
    Inventors: Richard Corbett, Julien Maffucci
  • Thrust bearing and suspension for vehicle
    Patent number: 8939439
    Abstract: Suspension thrust bearing device comprising a rolling bearing (2) and a bottom cover (4) having a bearing surface capable of accommodating a suspension spring (5), the bottom cover (4) comprising a reinforcing framework (8), which framework has a bearing collar (17) placed axially between the rolling bearing (2) and the bearing surface of the spring (5), the framework (8) also comprising an inner radial extension (19). The framework comprises an axial portion (20) extending in a direction away from the rolling bearing (2), protruding axially relative to the inner radial extension (19) and being situated radially outside the radial extension so as to be able to accommodate a shock-absorbing pad.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: January 27, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Richard Corbett, Samuel Viault
  • Bearing, bearing assembly comprising such a bearing and turbocharger comprising such a bearing assembly
    Patent number: 8939650
    Abstract: This bearing comprises a fixed outer ring and a rotatable inner ring, and at least one lubrication ring having at least one lubrication duct extending between an outer surface and an inner surface of the lubrication ring. The at least one lubrication duct is placed so that the scalar product of a vector collinear to the longitudinal axis of the lubrication duct, and a vector (VL1) collinear to the tangent line (L1) to an outer cylindrical surface of the inner ring, at the point where the longitudinal axis of the lubrication duct (270) intersects the outer cylindrical surface of the inner ring, and oriented in the same direction as the rotation direction (F) of the inner ring, is strictly superior to zero, said vectors being projected in a plane (P2) perpendicular to the rotation axis of the bearing.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: January 27, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Nicolas Berruet, Richard Corbett, Samuel Viault, Jun Wang, Jeroen Wensing
  • Multi-row tapered roller bearing and transmission having such a bearing
    Patent number: 8939651
    Abstract: 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: Grant
    Filed: March 21, 2011
    Date of Patent: January 27, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Joachim Sommer, Armin Olschewski, Rainer Spies, Arno Stubenrauch
  • SLEWING BEARING WITH A THROUGH-HOLE AND PLUG
    Publication number: 20150023624
    Abstract: The invention provides a slewing bearing having two rings and rollers arranged between the rings, wherein one of the rings is provided with a through-hole for inserting the rollers for assembly and maintenance, and with a plug for closing the through-hole. The through-hole is formed as a bore including an inner portion with a smaller bore diameter and an outer portion with a larger bore diameter. The invention provides a slewing bearing, where the smaller diameter portion can be reduced in order to facilitate the assembly, while avoiding an increased diameter in the innermost part of the thorough hole in order to secure stability and robustness.
    Type: Application
    Filed: July 21, 2014
    Publication date: January 22, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Cyril Bouron, Jean-Baptiste Magny, Pascal Ovize
  • Flanged bearing ring for the hub of a motor vehicle wheel
    Patent number: 8936321
    Abstract: A flanged bearing ring for a motor vehicle wheel includes two different materials joined as a single piece: a tubular core and an outer body around the core. The outer body forms a radial flange and is made of a lighter material than that of the core. The ring further includes an element of generally tubular shape, which contacts both the outer body and the inner core to cover and seal with continuity a circular line of separation at the end of the interface surface between the core and the outer body at the axially outer side of the ring. The tubular element further forms a cylindrical axial edge which extends in an axially inner direction and is fixed in the axially outer end of the core cavity, and a cylindrical tubular portion, projecting in an axially outer direction beyond the flange, for centering the vehicle wheel.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: January 20, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Paolo Re, Andreas Knopf