Patents Assigned to SKF
  • Assembly comprising a three-phase machine and a frequency converter
    Patent number: 7948206
    Abstract: Disclosed is an assembly encompassing a three-phase machine and a frequency converter. Said assembly has the following characteristics: the three-phase machine comprises a stator and a rotor; at least the three circuits of the stator and/or the rotor can be operated in an insulated manner relative to each other for the three phases of the rotary current while being connectable to one separate terminal point of the frequency converter, respectively, so as to be insulated relative to each other; and the frequency converter is embodied with a D.C. link having a grounded neutral in such a way that a voltage or current which is symmetric regarding the potential to ground can be output at any moment between the two associated terminal points of each circuit.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: May 24, 2011
    Assignee: AB SKF
    Inventors: Frank Buschbeck, Martin Groeschl, Gerwin Preisinger, Andreas Jagenbrein
  • Pulley Device for Tensioning Idler or Runner Roller
    Publication number: 20110111900
    Abstract: The pulley device for a belt or chain tensioning idler or runner roller comprises a pulley (12), a roller bearing (14), a spacer (18) for the mounting of the rolling bearing (14) and being capable of pressing against an element external to the device, a fastening screw (20) immobilized axially relative to the spacer (18), and at least one retaining ring (22) which is elastic radially and which is mounted inside a groove (60) made on the fastening screw (20), a portion of the ring (22) protruding radially into a recess (52) of the spacer (18).
    Type: Application
    Filed: June 10, 2009
    Publication date: May 12, 2011
    Applicant: AKTIEBOLAGET SKF
    Inventors: Pamphile Wilson, Thierry Prouteau, Cèdric Narbonnais
  • Rolling Bearing and Cage for Such a Bearing
    Publication number: 20110103729
    Abstract: Retaining cage for balls of a rolling bearing, comprising an annular shoulder (16) extended axially by projecting portions (18) defining between them sockets (15) for the balls, emerging radially on either side of the cage. The cage was made from a metal and the surface of each socket (15) is designed to cooperate with one of the balls and is defined by an imaginary cylinder with an axis oriented radially and cut by the plane axially delimiting the cage on the side opposite the shoulder (16) so as to form an axial opening of the socket, the width of this opening being smaller than the diameter of the said imaginary cylinder.
    Type: Application
    Filed: September 25, 2008
    Publication date: May 5, 2011
    Applicant: AKTIEBOLAGET SKF
    Inventors: Francis Claude, Armel Louis Doyer, Alexandre Manceau, Jean-Marie Gerard, Alberto Ferla
  • Control system responsive to relation between friction coefficient and wheel rotational speed for a wheel
    Patent number: 7937203
    Abstract: The invention relates to a control system for a vehicle with wheels, where at least one wheel is connected with means for braking and/or driving the wheel, the control system comprising a measuring device to measure a rotational speed of the wheel, a longitudinal force and a vertical force that occur at the wheel-road contact, and a control unit connected to the measuring device, to control the braking and/or driving of the wheel. The system is equipped to determine the second derivative (SD) of the wheel speed to the quotient of the longitudinal force and the vertical force and use this parameter to control the braking and/or driving the wheel.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: May 3, 2011
    Assignee: AB SKF
    Inventors: Paul Meaney, Simon Le Floc'h, Peter Frijlink
  • Railway bogie
    Patent number: 7934458
    Abstract: An axlebox-spring-unit of a railway bogie includes at least one hydraulic spring having a housing required for functionality of the hydraulic spring, and an axlebox. At least a part of the axlebox forms at least a part of the housing.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: May 3, 2011
    Assignees: AB SKF, Contitech Luftfedersysteme GmbH
    Inventors: Volker Gedenk, Friedrich Hoppmann, Rolf Schmiechen, John Skiller
  • Sensor Mounting Cover for a Rolling-Contact Bearing
    Publication number: 20110088467
    Abstract: A sensor mounting cover is for a rolling-contact bearing and includes a transverse wall and an axial projection joined to the transverse wall and provided with a through-seat for housing a sensor. The sensor faces the bearing from a window defined by an inner edge of the seat and a closure element is associated with the axial projection and is arranged at least around the inner edge so as to close the window.
    Type: Application
    Filed: October 20, 2010
    Publication date: April 21, 2011
    Applicant: AKTIEBOLAGET SKF
    Inventor: Andrea Serafini
  • Annular seal assembly for insertion between two relatively rotatable members and method for its use
    Patent number: 7926814
    Abstract: A seal assembly including first and second rigid shields and a sealing member carried by the first shield and having a first and second annular sealing lip in sealing engagement with respective sliding surfaces of the second shield. The first sealing lip carries in a radial seat thereof a toroidal spring exerting a radially eccentric thrust on the first sealing lip with respect to an elastic hinge defined by a common root portion of the lips, having a center of rotation located along a line extending through a V-shaped sealing edge of the first lip and forming a 20° to 60° angle with a radial plane. The root portion is defined between two opposite annular recesses having a U-shaped cross-section and bottom walls facing each other, substantially aligned along the aforementioned line.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: April 19, 2011
    Assignee: Aktiebolaget SKF
    Inventor: Claudio Foti
  • Bearing wheel hub unit
    Patent number: 7922262
    Abstract: Bearing wheel hub unit (1) is provided with a mounting flange (3) which is integral with an inner race (21) of the bearing (2) in order to mount a wheel, and with a centering collar (4) which extends from a frontal surface (31) of the flange (3) to permit the centering of the wheel in relation to the unit (1). The centering collar (4) produced, preferably of alloy, in such a way as to be independent of the mounting flange (3), and is assembled with the flange (3) by fixing onto the frontal surface (31).
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: April 12, 2011
    Assignee: Aktiebolaget SKF
    Inventors: Claudio Savarese, Angelo Vignotto
  • Tensioning roller device or winder
    Patent number: 7909717
    Abstract: Tensioning roller device including a non-rotating central part around which is rotatably mounted a pulley-forming rotating part, and a protective cap mounted on one end of the central part and extending radially outwards so as to form a narrow passage and/or a baffle with the rotating part, the cap including means for axial fastening to the non-rotating central part and means for angular fastening to the non-rotating central part.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: March 22, 2011
    Assignee: Aktiebolaget SKF
    Inventors: Jérôme Boussaguet, Romuald Lescorail
  • Disengageable Module for a System for Transmitting a Starting Torque to an Internal Combustion Engine
    Publication number: 20110048358
    Abstract: The disengageable module for a system for transmitting a starting torque to an internal combustion engine, of the type comprising a ring gear connected to the crankshaft of the combustion engine, comprises an inner ring (26) intended to be coupled to the crankshaft, an outer ring (28) intended to be coupled to the ring gear, and at least one free wheel (30) provided with a plurality of wedging elements (34) mounted between raceways of the said rings. It further comprises means (50) designed to provide relative centring of the inner ring (26) and of the outer ring (28) and for transmitting radial load, the said means (50) being mounted at least partially between the inner ring and the outer ring leaving radial clearances between themselves and the said inner ring.
    Type: Application
    Filed: October 14, 2008
    Publication date: March 3, 2011
    Applicant: AKTIEBOLAGET SKF
    Inventors: Jean-Philippe Gaborel, Pierre-Julien Louis Barraud, Gwenaël Hingouet, Virginie Hamada
  • BEARING COMPONENT
    Publication number: 20110052442
    Abstract: The present invention provides a bearing component formed from a steel composition comprising: (a) from 0.5-1.2 wt. % carbon, (b) from 0.15-2 wt. % silicon, (c) from 0.25-2 wt. % manganese, (d) from 0.85-3 wt. % chromium, (e) optionally one or more of the following elements from 0-5 wt. % cobalt, from 0-2 wt. % aluminium, from 0-0.6 wt. % molybdenum, from 0-0.5 wt. % nickel, from 0-0.2 wt. % vanadium, from 0-0.1 wt. % sulphur, from 0-0.1 wt. % phosphorous, and (f) the balance iron, together with unavoidable impurities.
    Type: Application
    Filed: March 25, 2009
    Publication date: March 3, 2011
    Applicant: AKTIEBOLAGET SKF
    Inventor: Mohamed Sherif
  • Sealing arrangement between a constant velocity joint and a hub bearing unit of a motor vehicle wheel
    Patent number: 7896750
    Abstract: One end of a resilient sleeve is fitted on a tubular projection of the bell of a constant velocity joint. The sleeve covers a radial slot formed in the projections and the arms of a spring locking ring for axially removably securing the joint bell to a toothed driving ring fixed on a rotatable hub. The other end of the sleeve has a radially inwardly projecting flange which is sealingly axially clamped against a rigid annular part secured to or integral with the hub.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: March 1, 2011
    Assignee: Aktiebolaget SKF
    Inventors: Marco Brunetti, Cristian Concu
  • Large diameter seals
    Patent number: 7896353
    Abstract: A large diameter seal having a band of elastic material on its outer diameter to insure a complete and effective sealing in the counterbore and a method for manufacturing this large diameter seal having elastomeric material on its outer diameter.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: March 1, 2011
    Assignee: SKF USA Inc.
    Inventor: Vester J. Lequire, Jr.
  • Bearing Assembly
    Publication number: 20110033147
    Abstract: A bearing assembly includes a first bearing comprising a first inner ring and a second bearing comprising a second inner ring. A sleeve-shaped spacer is disposed between and axially separates the first and second inner rings. An adhesive connects the spacer to the first and second inner rings.
    Type: Application
    Filed: June 16, 2010
    Publication date: February 10, 2011
    Applicant: AKTIEBOLAGET SKF
    Inventors: Rico Dittmar, Thilo Beck, Gerhard Haas, Michael Kummert, Achim Müller, Bernd Stephen, Arno Stubenrauch, Peter Volpert, Thomas Will
  • METHOD OF MANUFACTURING A LINK ROD FOR AERONAUTICAL CONSTRUCTION
    Publication number: 20110033225
    Abstract: According to this method, plastic welding is used to secure one longitudinal end (11) of a tube (10) made of thermoplastic to a dedicated part (21), made of thermoplastic, of an end piece (20) designed to be joined in an articulated manner to a structural component. According to the invention, the tube is manufactured by extruding thermoplastic in order to obtain a hollow section piece one length of which constitutes the tube and which, at the longitudinal end of the tube, has at least one flat surface (12, 13) parallel to the longitudinal axis (X-X?) of the tube, and in order to perform the plastic welding, the said at least one flat surface of the longitudinal end of the tube is mated against a corresponding flat surface (22, 23) belonging to the dedicated part of the end piece, then the mated flat surfaces are welded together.
    Type: Application
    Filed: June 14, 2010
    Publication date: February 10, 2011
    Applicant: SKF AEROSPACE FRANCE
    Inventor: Jean-Michel BUCHIN
  • MECHANICAL JOINT ASSEMBLY AND A METHOD OF ASSEMBLING SUCH AN ASSEMBLY
    Publication number: 20110023283
    Abstract: The assembly comprises an inner ring, an intermediate member housing the inner ring about a joint axis and, an outer body retaining the intermediate member. The intermediate member defines two first surfaces formed by cylinder portions having the same first axis of revolution which intersects the joint axis. The outer body defines two surfaces formed by cylinder portions having the same second axis of revolution. When the assembly is in an assembled state, the first axis of revolution coincides with the second axis of revolution and the first and second surfaces co-operate to enable the intermediate member to rotate relative to the outer body about the first axis of revolution but to prevent the intermediate member from moving parallel to the joint axis or parallel to an axis orthogonal to the joint axis and to the second axis of revolution.
    Type: Application
    Filed: June 11, 2010
    Publication date: February 3, 2011
    Applicant: SKF AEROSPACE FRANCE
    Inventor: Yvan BLACHON
  • Bearing Assembly
    Publication number: 20110026865
    Abstract: A bearing assembly includes at least one outer ring and an inner ring unit having at least two inner rings, each having a central bore. A supporting element extends through the central bores. Roller bodies are rotatably disposed between the at least one outer ring and each of the inner rings. Radially-outer bores extend through the inner ring unit or the supporting element in the axial direction and each receives a screw or bolt for affixing the bearing assembly on a bearing carrier. The radially-outer bores are spaced from the symmetry axis of the bearing assembly. At least one lubrication conduit is defined on or in at least one of the inner rings and is configured to communicate liquid lubricant to the roller bodies.
    Type: Application
    Filed: July 9, 2010
    Publication date: February 3, 2011
    Applicant: AKTIEBOLAGET SKF
    Inventors: Roland Haas, Elke Huhn, Marcel Gersting, Volker Wendt, Peter Lemper
  • Bearing Arrangement and Mounted Component for a Differential Gear Mechanism
    Publication number: 20110028266
    Abstract: A bearing arrangement has at least two anti-friction bearings which are spaced apart along a central axis. At least one bearing is configured as a tapered roller bearing, the tapered roller bearing having a number of frustoconical rolling bodies. A cone angle between a line of symmetry of each rolling body and the central axis is between 20° and 33°.
    Type: Application
    Filed: June 30, 2010
    Publication date: February 3, 2011
    Applicant: AKTIEBOLAGET SKF
    Inventors: Thomas Friedrich, Wolfgang Husslein, Udo Krug
  • Clutch release bearing device
    Patent number: 7878714
    Abstract: Clutch release bearing device, including an operating element, a rolling bearing furnished with rolling elements, with a non-rotating ring provided with a radial portion facing inwards and having a central opening, and with a rotating ring, the said rolling bearing being mounted on the operating element with which it may move axially, and a self-alignment sleeve placed between the non-rotating ring and the operating element and provided with a plurality of elastic ribs facing inwards.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: February 1, 2011
    Assignee: Aktiebolaget SKF
    Inventors: Benoît Arnault, Jean-Pierre Collognat
  • Sealing device
    Patent number: RE42061
    Abstract: A sealing device for sealing off an opening between a shaft and a grease-lubricated split bearing housing comprises two halves divided by a diametrical cut and each having a main body arranged in a circumferential groove in the bearing housing opening. The sealing device is provided with sealing lips spaced apart from each other and forming an intermediate grease reservoir, and reinforcing portions arranged between the main seal body and the sealing lips to facilitate sealing engagement between the sealing lips and a shaft when an upper bearing housing half arranged with the upper seal half is mounted onto the shaft while the shaft is resting in a lower bearing housing half arranged with the lower seal half.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: January 25, 2011
    Assignee: SKF Mekan AB
    Inventors: Henrik Olsson, Jörgen Stendahl