Patents Assigned to SKF Kugellagerfabriken GmbH
  • Patent number: 4572678
    Abstract: A cage for a ball bearing is formed by a series of side rings connected in a circular arrangement by crosspieces. The crosspieces have surfaces formed thereon for defining cage pockets in which balls are inserted and held. Each side ring is thin-walled, whereas the crosspieces are relatively thick, so that the cage is elastic. The walls of each cage pocket comprise four circular cylindrical surfaces, an opposing pair of which are integrally connected to converging conical surfaces formed on the projections. The projections may extend either radially inwardly or radially outwardly from the crosspieces or both. The balls of the bearing are held in the pockets by the converging conical surfaces.
    Type: Grant
    Filed: October 3, 1984
    Date of Patent: February 25, 1986
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Gunter Neder, Rainer Schurger
  • Patent number: 4572591
    Abstract: A ball bearing arrangement for longitudinal movement on a shaft or the like comprising a sleeve-shaped cage having a plurality of outwardly directed, axially aligned recesses, in each of which a raceway plate is inserted. Each raceway plate has a closed raceway formed thereon. An endless row of balls is arranged between each raceway plate and the cage. The cage has a plurality of guideways connecting the recesses with the cage bore and guiding the load-bearing balls. The angular distances between the load-bearing balls of adjacent endless rows are unequal. The raceway plates are interchangeable. Therefore, in the construction of each variation only a new cage need be provided.
    Type: Grant
    Filed: August 9, 1984
    Date of Patent: February 25, 1986
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Lothar Walter, Walter Reith, Otmar Winkler
  • Patent number: 4570773
    Abstract: In an antifriction-bearing throwout, particularly for automotive clutches, a clutch bearing with a non-rotating bearing-ring abuts in a radially slidable manner against a thrust plate of a sliding sleeve and is held in the centered position.To facilitate centering of the clutch bearing in relation to the tongue ends of the clutch diaphragm-spring, and to prevent slip-through of the clutch bearing in the case of shock as by hard road-bumps, the non-rotating bearing-ring is arranged in a manner such that, overcoming a radially-acting friction force in relation to sliding sleeve, it can tilt in a circumferential direction, within certain limits, and can slide in a radial direction along two guide-surfaces that run parallel to one another.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: February 18, 1986
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Horst M. Ernst, Manfred Brandenstein, Lothar Walter
  • Patent number: 4571222
    Abstract: A tension roller with a supporting member, pivoted on a pivot stud against the force of a tension spring, and rotatably supported in a roller sleeve by a bearing. The supporting member has a cylindrical interior space, limited by side walls, containing the tension spring. The side walls have bores for the pivot studs and recesses for formation of the stopping faces, against which the free ends of the tension spring abut in order to limit the angle of rotation of the tension roller. The member is made of synthetic material, using injection molding techniques. In order to produce this supporting member in an economical manner, additional recesses permitting insertion of a forming tool consisting of two halves are provided in the side walls of the member.
    Type: Grant
    Filed: April 12, 1983
    Date of Patent: February 18, 1986
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Manfred Brandenstein, Roland Haas, Rudiger Hans, Wolfgang Friedrich
  • Patent number: 4569429
    Abstract: Coupling release assembly comprising a sliding sleeve and a coupling bearing having a fixed bearing ring connected with a radially oriented flange of the sliding sleeve and a rotating bearing ring having a contact surface for a coupling lever, a socket of generally U-shaped cross section consisting of two half moon-shaped shells secured to the outer periphery of a flange of the sliding sleeve and the fixed bearing ring and biasing member urging the fixed bearing ring and flange of the sliding sleeve in prestressed contact with the opposing radially inwardly directly sides of the socket member.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: February 11, 1986
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Manfred Brandenstein, Horst M. Ernst, Lothar Walter, Wolfgang Friedrich
  • Patent number: 4567976
    Abstract: A clutch release, in particular for an automobile clutch, comprising a sliding sleeve, a clutch release bearing, and a spring ring for enabling self-centering of the bearing. The thrust plate of the sliding sleeve is provided with a plurality of circumferentially distributed flexible projections of L-shaped profile which engage the contact flange of the nonrotating bearing ring such that the nonrotating bearing ring radially slidably abuts the thrust plate. The thrust plate is provided with throughholes arranged underneath the respective projections in order to facilitate the elastic yielding of the projections during the operation of snapping them on the contact flange. The flexible projections fix the axially position of the nonrotating bearing ring while allowing radial play.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: February 4, 1986
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Manfred Brandenstein, Roland Haas, Wolfgang Friedrich
  • Patent number: 4563099
    Abstract: A rolling bearing unit, in particular a play-adjustable bearing arrangement, comprising a bearing shaft, a housing having a bore, and angular contact ball bearings having outer rings arranged in the housing bore and inner rings arranged on the bearing shaft. The shaft is provided with three annular grooves, a threaded portion, and an axial groove along the threaded portion. A locking ring is arranged in the first annular groove, a first cover is arranged on the shaft and abuts the locking ring, and the inner ring of the first bearing abuts the cover. The adjustment of the bearing play is achieved by adjustably arranging a second cover on the threaded portion of the shaft to abut the inner ring of the other ball bearing. The securing of the second cover against rotation relative to the shaft is achieved by deforming or indenting the boss of the cover to engage the axial groove.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: January 7, 1986
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Manfred Brandenstein, Roland Haas, Rudiger Hans
  • Patent number: 4560051
    Abstract: An hydraulically actuated clutch release, in particular for automobile clutches, comprising a housing having a cylindrical portion and a flange in which a port for the intake of a pressure medium is incorporated, a cylindrical sleeve, an annular piston having a flange and slidably arranged between the cylindrical sleeve and the cylindrical portion of the housing, thereby forming a pressure medium-admitting chamber, a clutch release bearing having a non-rotating bearing ring, an outer cylindrical sleeve, and a compression ring. The outer cylindrical sleeve comprises two portions of different inner diameter and a bead connecting the portions. One portion fixedly contacts the non-rotating bearing ring and the end face of the annular piston flange, and the other portion covers a portion of the outer sliding surface of the annular piston. The compression spring is arranged between the bead of the outer cylindrical sleeve and the flange of the housing.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: December 24, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Manfred Brandenstein, Roland Haas, Hein Hartmann
  • Patent number: 4560291
    Abstract: A cage for ball bearings consists of two side rings connected together by webs, and having ball pockets with ball pockets having curved partial surfaces inside and outside of the pitch circle and displaced from one another in the axial direction. In this arrangement the rubbing between the walls of the cage pockets and the balls is very small and free space is provided for receiving a lubricant. The pocket walls of the cage sections lying in the region of one or the other of the side rings has several radially-overlying zones, with conical surfaces, the conical surfaces being arranged at different inclinations to the bearing axis.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: December 24, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Roland Bonengel, Herbert Dobhan, Manfred Brandenstein, Ludwig Edelmann, Horst M. Ernst, Helmuth Kregler, Anton Marx, Gunter Neder, Elmar Mause, Armin Olschewski, Rainer Schurger, Robert Stolz
  • Patent number: 4558962
    Abstract: A snap ring for axially holding an axially inserted machine element has a ring joint in the installed condition and is positioned with radial prestress in an annular groove formed in the bore of a ring, housing or the like. In order to ensure that the snap ring does not snap out of the annular groove when axial loading is exerted, the ring joint is formed by the interlocking of at least one projection formed on one end of the snap ring and a corresponding recess formed in the other end of the snap ring, each having oblique surfaces for preventing relative radial displacement between and for aligning the respective ends having the projection formed thereon and the recess formed therein.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: December 17, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventor: Helmut Meinlschmidt
  • Patent number: 4558502
    Abstract: A method for the assembly of universal joints with radially pretensioned fork arms, consisting of the steps of inserting and positioning the joint cross in the joint fork, pressing in the bearing and fixing them by means of pressure units, one of which supports each fork arm and pretensioning each fork arm individually during the entire pressing-in and/or fixing phase by means of the tipping force resulting from the pressure prevailing between the support element and the pressing/peening tool, reduced by a partial force following in response to the amount of the pressing force.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: December 17, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Willi Gossmann, Gebhard Pape, Norbert Klupfel, Emil Ludwig, Josef Stark, Bernhard Bauer, Hans Freund
  • Patent number: 4557708
    Abstract: A tension roller for enabling adjustment of the tightness of a driving belt, comprising a solid support and a bearing press-fit thereon. The solid support has an axially extending mounting bore eccentrically arranged therein and a seating surface formed circumferentially thereon. A plurality of balanced bores are circumferentially distributed in the support in order to obtain a uniform radial elasticity at the seating surface. The balance bores may have a diameter equal to or less than the diameter of the mounting bore. In the latter case, the shortest distance between the balance bore surfaces and the seating surface is equal to the shortest distance between the mounting bore surface and the seating surface. The resultant uniformity of the radial elasticity prevents deformation of the bearing.
    Type: Grant
    Filed: June 1, 1984
    Date of Patent: December 10, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Manfred Brandenstein, Roland Haas, Gerhard Herrmann, Rudiger Hans
  • Patent number: 4553796
    Abstract: A ball bearing for longitudinal movement on a shaft or the like, comprising a cage which at least partially surrounds the shaft and is installed in the bore of a housing, ball guides consisting of axial guide tracks for the loaded and unloaded balls arranged next to each other around the periphery with semi-circular deflector tracks joining pairs of these guide tracks, endless rows of balls guided in the guide tracks, and at least one raceway element supported in the bore of the housing carrying the loaded balls of one or more guide tracks on its radially inwardly directed raceway, a longitudinal fillet projecting radially from the inside and toward the outside approximately as far as the height of the centers of the balls between two guide tracks of each ball guide and formed on the cage in such a way that the radius of curvature of each ball guide passing through the centers of the balls of the deflector tracks is equal to or slightly larger than half the diameter of the balls.
    Type: Grant
    Filed: July 23, 1984
    Date of Patent: November 19, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Lothar Walter, Walter Reith, Otmar Winkler
  • Patent number: 4550479
    Abstract: In a process for the production of a heat treated bearing ring with at least one longitudinal slit extending axially therethrough formed by means of two abutting ends lying opposite one another in the circumferential direction, one or more flat band sections of heat treatable strip material are stamped with at least a holding tongue formed on one or both respective abutting ends and a holding recess on the opposite abutting end fitting the respective holding tongue with a force fit. The band section is bent to form a bearing ring, with each holding tongue of the one abutting end radially engaging the respective holding recess of the other abutting end on the respective longitudinal slit. The ring is then heat treated and then the holding tongue is broken out of its respective recess.
    Type: Grant
    Filed: February 16, 1983
    Date of Patent: November 5, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Lothar Walter, Walter Reith
  • Patent number: 4549442
    Abstract: A wedge mechanism particularly adapted for expanding brakes of motor vehicles including a housing, a wedge member, a pair of push rods displaceably supported in the housing action upon the brake shoes of the brake by opposing displacement in a common perpendicular direction, rollers arranged between one of the two wedge surfaces of the wedge member and a complementary inclined surface of the push rod located opposite it, a cage for the rollers, which in relation to the spreading wedge is movable in longitudinal direction and which in turn has two parallel side portions running in perpendicular direction, with machined openings in them in the direction of the axis of rotation of the rollers for guiding the ends of the rollers facing the side portions, characterized in that both rollers (9) have a face (20,27) at their ends, gradually changing over into their roller surface (21) confronting the inclined wedge surfaces and that the opening in the roller cage (13) is formed by a common recess (16,26) for said rol
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: October 29, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Rudiger Hans, Manfred Brandenstein
  • Patent number: 4547084
    Abstract: A cage for roller bearings made of a plastic material consisting of two annular side parts and a plurality of circumferentially spaced crosspieces joining the side parts to form pockets for the rolling elements, said pockets including elastically deformable retaining projections for guiding said rolling elements and retaining them in the cage, said side parts having a U-shaped cross-section with axially outwardly directed shanks and said crosspieces consisting of two thin-walled, curved parts which are arranged around the periphery at a predetermined distance from one another, the outer surfaces of these parts being arranged to face each other.
    Type: Grant
    Filed: October 4, 1984
    Date of Patent: October 15, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Hans Meining, Rudiger Hans
  • Patent number: 4544168
    Abstract: A sealing arrangement for two machine elements concentrically arranged with respect to one another for relative rotation, especially for the inner and outer bearing rings of a rolling bearing, consists of a holding ring circumferentially arranged spring fingers radially snappable in an annular groove in the outer or inner ring, and a sealing seal of an elastically compressible plastic connected thereto, the holding ring being adapted to be axially inserted between the inner and outer bearing rings. In order to maintain a precise centering of the seal connected to the holding ring, between the outer and inner ring, the holding ring has spring fingers on its axially outer end and a centering section on its axially inner end. The centering section is radially supported in the bore of the outer ring or on the outer surface of the inner ring.
    Type: Grant
    Filed: February 11, 1985
    Date of Patent: October 1, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Rudiger Hans, Wolfgang Friedrich
  • Patent number: 4541740
    Abstract: A rotor bearing assembly is provided wherein a shaft is journalled within a housing by a pair of spaced bearings packed in a quantity of grease. An oil guide surrounds the shaft and a storage space between the guide and the housing is formed for retaining a supply of grease capable of releasing oil into the guide to replenish the packing. A fresh supply of grease is periodically introduced into the storage space through an inlet extending through the housing. An outlet extends through the housing for discharging a corresponding quantity of grease from the storage space into a collection chamber exterior of the housing which receives and holds the discharged grease.
    Type: Grant
    Filed: February 9, 1984
    Date of Patent: September 17, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventor: Lothar Schard
  • Patent number: 4541818
    Abstract: A universal joint for rotatory drives such as are for example used in motor vehicle construction. To improve the life of the bearings, asymmetrical indentations are provided on the yoke arms, or the yoke arms have tangentially directed sections in which the bearing bores are disposed. As a result, the universal joint is subjected to load, and there is no deformation of the bearing bore or unacceptable cramping of the bearings.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: September 17, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Armin Olschewski, Zoltan Laszlofalvi, Heinrich Kunkel
  • Patent number: 4537270
    Abstract: A bearing arrangement for a driven wheel of a vehicle, comprised of a rolling bearing whose outer ring is provided with a flange for affixing the assembly to a vehicle frame or the like. A wheel hub is provided with a flange for supporting a wheel. A drive joint is provided for driving the hub wheel, and a pin or the like is provided for holding the parts together. The axially engaging end surfaces of the wheel hub and drive joint are provided with engaging teeth for the transmission of torques. In order to interconnect the parts precisely to one another for centering and to ensure their reliable interconnection, the inner ring of the rolling bearing is mounted on the outer surface of the wheel hub and/or the drive joint, and end surfaces of the inner ring abut first shoulder surfaces of the wheel hub and the drive joint. The wheel hub and the drive joint directly abut one another at the end surfaces with are provided with substantially axially extending and intermeshing projections.
    Type: Grant
    Filed: May 26, 1983
    Date of Patent: August 27, 1985
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Manfred Brandenstein, Rudiger Hans