Patents Assigned to SKF
  • Patent number: 6318512
    Abstract: An electric actuator (13) comprises a housing (17) which contains a screw mechanism (11) and an electric motor (5) which is driveably connected to the screw mechanism (11) which provides a linear movement in response to a rotational movement of the electric motor (5), said screw mechanism (11) comprising a screw (12) and a nut (33) one of which is supported rotatably with respect to the housing (7) by means of an angular contact ball bearing (31), said screw (12) by means of an intermediate coupling element (18) engaging an actuating member (16) for transferring axial forces. The intermediate coupling element (18) engages the screw (12) by means of an axial connection (53, 54) which allows radial movements.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: November 20, 2001
    Assignee: SKF Engineering and Research Centre B.V.
    Inventors: Alexander Jan Carel De Vries, Armin Herbert Emil August Olschewski, Hendrikus Jan Kapaan, Roland Haas
  • Patent number: 6315457
    Abstract: A bearing assembly for a vehicle hub comprises rolling elements (9, 10) which are in rolling contact with at least one inner raceway (2) and outer raceway (1), of respectively an inner ring member and an outer ring member, one of which ring members comprises two bearing rings (3, 4) which are interconnected by means of a mounting sleeve (14) for preloading the rolling elements in axial direction between the raceways. The bearing rings (3, 4) are bonded to the sleeve (14) by means of glueing.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: November 13, 2001
    Assignee: SKF Engineering and Research Centre B.V.
    Inventors: Hendrikus Jan Kapaan, Johannes Franciscus Sanden, Jesko-Henning Tanke, Norbert Huhn
  • Patent number: 6311807
    Abstract: A brake calliper for a disc brake comprises a yoke carrying a pair of opposite brake pads and an electric actuating mechanism connected to the yoke, the actuating mechanism engaging a displaceable support member for displacing the brake pads towards and from each other. The actuating mechanism is driveable over a first range of rotations as well as over a second range of rotations, one of which ranges being for displacing the pads towards and from each other for exerting a braking effect on an associated brake disc, and the other range of which being for wear compensation of the pads.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: November 6, 2001
    Assignee: SKF Engineering and Research Centre B.V.
    Inventor: Andries Christian Rinsma
  • Patent number: 6306230
    Abstract: A method for producing hardened parts of steel from an air-hardening steel comprising the steps of heating the steel is heated to a temperature above 1,100° C., hot-working the steel parts until they reach the A1 emperature, cooling the steel parts in air to about 280° C. under simultaneous thermo-mechanical sizing treatment, then cooling the steel parts in air to room temperature, stress relief treating the steel parts at 150-250° C., and hard-machining the steel parts.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: October 23, 2001
    Assignee: SKF GmbH
    Inventor: Frank Hengerer
  • Patent number: 6302404
    Abstract: A sealing device primarily for sealing off a slit-shaped space between two radially extending surfaces arranged about a shaft and axially displaceable relative to each other along the shaft includes a first sleeve-shaped seal part and an elastically resilient sealing body. The first sleeve-shaped part forms together with the shaft an axially open space facing the cooperating surface. The elastically, resilient sealing body has in an uncompressed state a cross-sectional area and/or a shape deviating from the area and/or shape of the axially open space. The sealing body when subjected to axial forces causing the sealing body surface and the cooperating surface to abut each other is compressed sealingly between the axial space and the cooperating surface, thereby creating a sealing engagement against the entrance of the slit-shaped space and against the shaft.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: October 16, 2001
    Assignee: SKF Sverige AB
    Inventor: Asbjörn Bundgart
  • Patent number: 6302403
    Abstract: A sealing assembly for two mechanical members connected for relative rotation; a first mechanical member is fitted integrally with a substantially rigid shield, from which projects radially an annular sealing member having, on a respective first annular face, a first and a second axial sealing lip, both cooperating in sliding manner with a sealing surface of a second mechanical member; when the first annular face of the annular sealing member is subjected to a pressure substantially equal to the pressure on a second annular face, opposite the first, of the annular sealing member, only the first lip cooperates in sliding manner with the sealing surface, and the second lip mates, with no interference, with the sealing surface to permit fluid passage; conversely, when the first annular face is subjected to a pressure significantly lower than the pressure on the opposite second annular face, the annular sealing member is deformed elastically so that the second lip also cooperates in sliding manner with the sealin
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: October 16, 2001
    Assignee: SKF Industrie S.p.A.
    Inventors: Gianfranco Pairone, Fabrizio Avaro, Mario Micca
  • Patent number: 6295678
    Abstract: The process for making an automatic balancing unit outbalance an unbalance condition in a rotating system, particularly a clothes washing machine with an outer casing an a suspended oscillating washing assembly comprising a wash tub, a cylindrically-shaped perforated drum housed in said tub and capable of rotating in the interior thereof about the axis of the cylinder during washing and spin-extraction, a motor capable of rotatably driving said drum at various speeds and provided with accessory means that are firmly associated with said tub, said drum being connected to said automatic balancing unit formed by at least one annular hollow body, forming a sealed closed-loop configuration and being mounted integrally with said cylindrical drum with their axis coinciding with the rotational axis of said perforated drum, and a plurality of moving masses capable of freely moving in a liquid filled in said hollow body, and which process incorporates that before at least a spin-extraction phase, the drum is driven to
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: October 2, 2001
    Assignee: SKF Autobalance Systems AB
    Inventors: Jöakim Jonsson, Hans Lindell
  • Publication number: 20010018803
    Abstract: A method for securing the outer ring of the bearing in a runner shell wherein the radius of an edge defining the seat for the bearing varies in a predetermined manner around its circumference, the steps comprising, positioning an outer ring of the bearing in the seat of the runner shell so that the edge of the runner shell overlies a circumferentially extending seating groove in the outer ring, placing a die having a forming face in engagement with the peripheral edge of the runner shell, and deforming by means of a die, the edge of the runner shell seat in a manner to displace essentially the same material around the circumference of the edge into the bearing groove, thereby producing a generally uniform force on the bearing ring around the circumference of the ring which eliminates distortion thereof.
    Type: Application
    Filed: May 18, 1999
    Publication date: September 6, 2001
    Applicant: SKF GmbH
    Inventors: BERTHOLD BEYFUSS, HANS-JURGEN FRIEDRICH, PETER HORLING
  • Patent number: 6279231
    Abstract: A method for securing the outer ring of the bearing in a runner shell wherein the radius of an edge defining the seat for the bearing varies in a predetermined manner around its circumference, the steps comprising, positioning an outer ring of the bearing in the seat of the runner shell so that the edge of the runner shell overlies a circumferentially extending seating groove in the outer ring, placing a die having a forming face in engagement with the peripheral edge of the runner shell, and deforming by means of a die, the edge of the runner shell seat in a manner to displace essentially the same material around the circumference of the edge into the bearing groove, thereby producing a generally uniform force on the bearing ring around the circumference of the ring which eliminates distortion thereof.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: August 28, 2001
    Assignee: SKF GmbH
    Inventors: Berthold Beyfuss, Hans-Juergen Friedrich, Peter Horling
  • Patent number: 6276830
    Abstract: Linear guide assembly comprising at least two guide rails, which are moveable in the longitudinal direction with respect to each other and have prismatic shaped raceways, a plurality of rolling elements guided in a cage, at least one gear wheel for the positive guidance of the cage is connected to the cage, which wheel engages in toothed racks, each of which is connected to a guide rail, the gear wheel comprising a disk, having axial projections distributed around the periphery at least one of the end surfaces and rows of uniformly spaced recesses, into which the projections on the disk can engage.
    Type: Grant
    Filed: April 7, 1999
    Date of Patent: August 21, 2001
    Assignee: SKF Linearsysteme GmbH
    Inventors: Ludwig Edelmann, Andreas Geyer, Hermann Glöckner, Georg Hierl, Holger Kristandt, Uwe Mayer, Henryk Velde, Lothar Walter
  • Patent number: 6275781
    Abstract: A vibration data processor and processing method uses a frequency domain filter having low pipeline delay and accurate time domain signal reconstruction. The filter may be user configurable, and the filter may receive input data from a variable number of decimation stages. Sequences of extracted vibrational features are routed to a variable length output buffer for event detection.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: August 14, 2001
    Assignee: SKF Condition Monitoring, Inc.
    Inventors: Phillip L. Maness, Johannes I. Boerhout
  • Patent number: 6270001
    Abstract: A method is disclosed of manufacturing a pulley with integral bearing comprising a sheet metal pulley mounted on the outer race of a bearing. The pulley is a close sliding fit on the outer race. The interstice between the pulley and the race is at least partly filled with a low-melting-point filler metal which, when heated, melts and diffuses by capillary action into the interstice between the pulley and the race, at least partly filling the interstice and fastens the pulley to the race when it solidifies. The filler metal is advantageously a brazing alloy having a melting point much lower than that of the parts to be joined together. Applications of the method include the manufacture of belt tensioning pulleys with integral bearings, as used on automobile vehicle engines, for example.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: August 7, 2001
    Assignee: SKF France
    Inventors: Vedran Tadic, Manfred Brandenstein, Johannes Van De Sanden
  • Patent number: 6267512
    Abstract: A suspension thrust-bearing device for a telescopic suspension strut of a motor vehicle which includes a rolling bearing forming an axial thrust stop, a metal cup for accepting a suspension spring, and an elastic support block. The rolling bearing is positioned between the metal cup and the elastic support block which is secured to the frame of the motor vehicle. The rolling bearing includes an upper race placed within a cap which is in contact with the support block, and a lower race. The cap is provided with means for axially retaining the metal cup, to form a unit assembly, and acts as an interface between the upper race and the elastic support block. An outer cylindrical portion of the cap covers the periphery of the metal cup.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: July 31, 2001
    Assignees: SKF France, Mannesmann Sachs AG
    Inventors: Eric Beghini, Reinhard Liesener, Günther Handke, Lars Winslott
  • Patent number: 6250142
    Abstract: A method and apparatus for measuring the waviness of surfaces of, for example, bearing parts involves the use of a control element that is rotatably applied against a surface of the object to be measured. The control element has a similar geometry to the final bearing component and is placed in a hydrostatic pocket, or kept in a bearing arrangement, allowing it to rotate and move freely. The control element is loaded with a substantially constant force and is arranged to be moved rotatably across the surface to be tested. At least one transducer is arranged to monitor the direct movement of the control element or the movement via the pocket, and a signal is created corresponding to the waviness.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: June 26, 2001
    Assignee: SKF Nova AB
    Inventor: Bo Göransson
  • Patent number: 6245212
    Abstract: An apparatus and method for electrochemically machining a texture on a metal bearing component. A ribbon is provided between an electrode and the metal bearing component. The ribbon is flexible, substantially non-conductive and provided with holes. While the ribbon is in direct contact with the metal bearing component, current is passed between the electrode and the metal bearing component. The pattern of the holes in the ribbon determines the pattern electrochemically machined on the surface of the metal bearing component. According to a preferred embodiment the ribbon is an endless belt.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: June 12, 2001
    Assignee: SKF Engineering and Research Centre B.V.
    Inventors: Hervé Girardin, Carole Michèle Humbert
  • Patent number: 6241395
    Abstract: An encoder wheel (1) for a roller bearing provided with a multipolar magnetised ring (5) presenting an axial thickness (S) which is radially variable in an inversely proportional way to a radius (R) of the ring (5) itself, and also provided with a metallic insert (6) for supporting the multipolar ring (5) itself; the metallic insert (6) presenting a curved annular wall (11), which axially delimits the multipolar ring (5), and presents a variable curvature to the variation of the thickness (S) of the multipolar ring (5).
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: June 5, 2001
    Assignee: SKF Industrie S.p.A.
    Inventors: Angelo Vignotto, Massimo Marivo
  • Patent number: 6241257
    Abstract: The combination comprising, a bearing housed in a belt pulley, a sealing disk covering the bearing clamped between the head of a screw and the inner ring of the roller bearing, means attaching said sealing disk 4 directly to the inner ring axially and radially and including projections 13, 14 extending into the bore of the inner ring to secure the screw 3 for transport.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: June 5, 2001
    Assignee: SKF GmbH
    Inventors: Helmut Hauck, Deiter Plössl, Robert Stolz, Bettina Stoyke
  • Patent number: 6238097
    Abstract: A Sheet-metal cage for rollers of roller bearings, confronting a section having pockets for rollers and at least one side ring having a bore surface extending from one end of said section said ring-shaped section 8 of the side ring 2 carrying the bore surface 3 is connected to the sheet-metal cage by radially deformable flexing elements 7.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: May 29, 2001
    Assignee: SKF GmbH
    Inventors: Berthold Beyfuss, Peter Horling, Jurgen Sturzenberger
  • Patent number: 6234679
    Abstract: A rolling bearing made of bearing steel and incorporating an inner race, an outer race positioned coaxially about the inner race and a set of rolling bodies positioned in the annular space between and in rolling contact with the inner and outer race, wherein at least one of the inner race, the outer race and the set of rolling bodies is provided with a surface coating incorporating an exterior carbon nitride layer and an intermediate layer interposed between the carbon nitride layer and the surface of the coated component(s), said intermediate layer being hexagonal boron carbon nitride.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: May 22, 2001
    Assignee: SKF Nova AB
    Inventor: Hans Sjöström
  • Patent number: D446230
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: August 7, 2001
    Assignee: SKF Mekan AB
    Inventor: Henrik Olsson