Patents Assigned to SKF
  • Patent number: 4111501
    Abstract: Cage for a bearing which is only axially insertable from one side of a bearing which comprises inner race and outer race rings both provided with an integral flange and rows of rolling elements running in race ways between the rings, each two adjacent rolling elements out of two rows in circumferential direction of the bearing being separated in relation to the next pairs of rolling elements by a bearing cage member, characterized in that the bearing cage-partition member has such a shape that it is elastically compressible at least in radial direction, such that the rolling elements during loading of the bearing both in the same as well as in the adjacent race way can take relatively small distance differences in relation to each other.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: September 5, 1978
    Assignee: SKF Industrial Trading & Development Co., B.V.
    Inventors: Gordon Boyd Johnston, Hasse Eivind Strandberg
  • Patent number: 4108503
    Abstract: A linear motion ball bearing including an outer sleeve, a cylindrical ball-retaining cage within the sleeve, with continuous raceways defined between the sleeve and cage, and a plurality of balls in these raceways; the sleeve including, as part of each raceway, an axial return race defined by a slot. The cage has a corresponding and generally adjacent axial race, the cage, in an assembled bearing, being rotated about its central axis and displaced relative to the sleeve, so that balls in the axial race are engaged and retained by an edge of the slot.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: August 22, 1978
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Horst Manfred Ernst, Armin Olschewski, Lothar Walter, Manfred Brandenstein
  • Patent number: 4108504
    Abstract: A longitudinally movable bushing has a continuous raceway for endlessly circulating rolling elements, such as balls. The raceway has a portion for loaded balls, wherein the balls are externally exposed to engage a loading surface, and an unloaded portion joined at its ends to the loaded portion. The ends of the loaded raceway portion gradually widen, the widened portions having the same depth as the remainder of the portions.
    Type: Grant
    Filed: June 23, 1977
    Date of Patent: August 22, 1978
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Horst Manfred Ernst, Armin Olschewski, Lothar Walter, Manfred Brandenstein
  • Patent number: 4107560
    Abstract: A dynamoelectric machine wherein rotor cooling is effected by cooling channels located in the stator structure.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: August 15, 1978
    Assignee: SKF Industrial Trading and Development Company B.V.
    Inventor: Stig Lennart Hallerback
  • Patent number: 4103567
    Abstract: A differential pinion assembly, especially suitable for use in a motor-vehicle transmission is described.This assembly in adapted to transmit the movement to two axle-shafts, has a simple and very compact structure and the friction between the relative movement members is substantially a rolling friction.This assembly comprises a box in the inside of which rotates a differential carrier actuated by a driving toothed pinion engaging with a crown gear solid with the differential carrier. The differential carrier carries satellite gears rotatable relative to it and mates with corresponding planetary gears with each of which one of the aforesaid axle-shafts is solid. The main feature of this assembly is that of comprising a first row of rolling elements interposed and coupled between each of said planetary gears and the above mentioned differential carrier, as well as a second row of rolling elements interposed and coupled between said planetary gear and said box.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: August 1, 1978
    Assignee: SKF Industrial Trading and Development Company N.V.
    Inventors: Colanzi Franco, Sapello Guido
  • Patent number: 4102553
    Abstract: A roller bearing for longitudinally movable machine elements, in which rollers run in and out of a load zone between entry and return paths, has at least one component that defines therein running-in and/or running-out areas which are made elastically yielding by slits which extend parallel to the path below the surface of the running-in and running-out areas.
    Type: Grant
    Filed: May 11, 1977
    Date of Patent: July 25, 1978
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Horst M. Ernst, Manfred Brandenstein, Armin Olschweski
  • Patent number: 4102447
    Abstract: A clutch release thrust bearing has an inner rotor disk with an axially extending portion, and a cup-shaped outer disk with an axially extending portion aligned with the axially extending portion of the inner rotor disk. A layer of plastic material is provided on one of the axially extending portions in order to minimize friction between these two members in the event of axial or radial displacement therebetween.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: July 25, 1978
    Assignee: SKF Kugellagerfabriken GmbH
    Inventor: Wilhelm Fischer
  • Patent number: 4099605
    Abstract: A clutch release device, particularly for motor vehicles, with a self-centering clutch thrust bearing, having a fixed bearing ring, and which is located with radial play with respect to a bearing support, and which has; a sliding sleeve forming the bearing support, an additional sleeve connected to the sliding sleeve, the fixed bearing ring nonrotatingly contacting a contact surface of the additional sleeve, means preventing the fixed bearing from rotating on the additional sleeve, the additional sleeve, at the area of contact with the contact surface, being offset in a direction toward the clutch thrust bearing, the additional sleeve, in the offset, having at least two diametrically opposed recesses for engaging fixed means located on the periphery of the fixed bearing ring for protecting the clutch release bearing from rotation with respect to the bearing support.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: July 11, 1978
    Assignee: SKF Industrial Trading & Development Company B.V.
    Inventors: Horst Manfred Ernst, Armin Olschewski, Rainer Schurger, Lothar Walter, Manfred Brandenstein, Erich Burkl
  • Patent number: 4095852
    Abstract: A bearing assembly having inner and outer bearing rings and a plurality of sliding bearing disks, one of these disks being a force measurement sliding disk having the same dimensions as one of the sliding bearing disks and positioned between the rings in the main load zone of the bearing assembly as a replacement for one of the sliding bearing disks, the force measurement disk being in a recess position between the rings and the other disks and comprising a carrier member with a force measuring transducing element mounted thereon.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: June 20, 1978
    Assignee: SKF Industrial Trading & Development Company B.V.
    Inventor: Karl-Heinz Schutz
  • Patent number: 4095488
    Abstract: A planetary gear system comprising housing, an input shaft at one end and an output shaft at the opposite end and transmission means drivingly connecting the shafts to one another. The transmission means includes a planet support having at least two planet wheel journals mounted therein. At least one of the journals mounts a planet friction wheel adapted to contact a friction ring having at least an elastically deformable portion. Means is provided for adjusting the pressure applying relation between the planet friction wheel and the elastically deformable portion of the friction ring. This arrangement provides a multiple step gear system wherein the play in the system is minimized and the system operates at low noise levels.
    Type: Grant
    Filed: April 7, 1976
    Date of Patent: June 20, 1978
    Assignee: SKF Nova AB
    Inventor: Sven Walter Nilsson
  • Patent number: 4094394
    Abstract: A clutch throw-out device has a thrust bearing and a pressure plate. A radially extending flange on one of the bearing rings of the thrust bearing is coupled to the pressure plate, to inhibit relative rotation therebetween. The coupling includes projections on one of the flange or pressure plate extending into corresponding recesses of the other member at the coupling. The recesses are adequately large to permit radial movement, and elastic damping means are provided at least between the recesses and projections.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: June 13, 1978
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Walter Koder, Reinhart Hillmann
  • Patent number: 4093053
    Abstract: A siding collar is provided for a fork-activated coupling clutch release bearing, including a collar body with a cast-in wear-resistant disc formed on a radial flange. A plurality of contact zones on one side of the disc contact the fork. On the bearing side of the disc the nonrotating bearing ring contacts the disc, the disc having a plurality of guide zones running essentially axially along the edge, with means for securing this bearing ring to the collar having guide zones for holding this bearing ring on the sliding collar against rotation on the sliding collar.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: June 6, 1978
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Horst Manfred Ernst, Armin Olschewski, Rainer Schurger, Lothar Walter, Manfred Brandenstein, Erich Burkl
  • Patent number: 4084649
    Abstract: Rock bit for drilling holes in the earth's crust which can be connected to driving means and being provided with supports or rock bit legs in which rotatable cutting elements or cutter cones are journalled, wherein a rock bit support comprises a removable part to which the bearing outer race ring is connected, the support part being a regularly shaped spatial body having edges which, in the assembled position, are situated in boundary planes of the support or rock bit leg.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: April 18, 1978
    Assignee: SKF Industrial Trading & Development Company B.V.
    Inventor: Hans Bertil van Nederveen
  • Patent number: 4084860
    Abstract: Apparatus for mounting an open end spinning turbine positioned adjacent the front end of a drive shaft includes a bearing block which has a pair of spaced walls traversed by the drive shaft. Rollers are provided between the spaced walls forming a V-groove support for the drive shaft. The rear end of the shaft extends outwardly of the rear wall of the bearing block and has an annular T-slot formed therein. A bushing is mounted in the wall for journalling of the shaft, and a guide member extends within the T-slot for establishing the axial location of the shaft within the supporting rollers.
    Type: Grant
    Filed: May 26, 1976
    Date of Patent: April 18, 1978
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Gisbert Kohler, Hanns-Wilfried Munkel, Hubert Pohl, Walter Sommer, Gunther Wendel
  • Patent number: 4083917
    Abstract: A method for making a stator for an electric machine which is simple, relatively inexpensive and permits mass production of motors having excellent operating characteristics including accurate centering of the rotor for silent and vibration-free function and efficient cooling of the windings and bearings. The method consists of the steps of supporting casings in a position surrounding the winding heads in sealing relation with opposite ends of a lamination stack, positioning a mandrel in the stator cavity having locating means engageable with the stator stack and means on its outer surface to define axial and radial locating positions for bearing shields. The casings, laminations and mandrel define a pair of enclosed cavities at opposite ends of the stator stack. A curable molding material is injected into the cavities by means of centrifugal force and thereafter the molding material is cured to complete the stator assembly.
    Type: Grant
    Filed: June 11, 1976
    Date of Patent: April 11, 1978
    Assignee: SKF Industrial Trading and Development Company B.V.
    Inventors: Stig Lennart Hallerback, Leif Lachonius
  • Patent number: 4082374
    Abstract: An axially movable ball bearing includes a cage having a plurality of circumferentially distributed guideways, each guideway including first and second axially extending channels joined at their ends by semi-circular sections. A plurality of balls are provided in each of the guideways. The first channels are open radially inwardly so that the balls therein may engage a shaft along which the bearing is adapted to move. A thin-walled metal housing is tightly fitted over the cage, and has bridge sections aligned with the first channels. The bridge sections have on their radially inner surfaces, guide courses for engaging the balls in the first channels. The housing is slotted between the bridge sections, so that the second channels project radially outwardly between the bridge sections. The bridge sections are joined together at each axial end of the bearing by end rings. The metal housing has a greater hardness in the region of the courses of the bridge sections than in the other regions thereof.
    Type: Grant
    Filed: July 22, 1976
    Date of Patent: April 4, 1978
    Assignee: SKF Industrial Trading & Development Company B.V.
    Inventors: Horst Manfred Ernst, Armin Olschewski, Lothar Walter, Rainer Schurger, Manfred Brandenstein, Erich Burkl
  • Patent number: 4082383
    Abstract: A ball cage for a ball bearing of the angular contact type having a double row of balls with opposed angular contacts comprises a solid central portion which is bounded between two concentric cylindrical surfaces and between two parallel planes and has cells with part-spherical surfaces for receiving the balls in each axially directed side. Elastic lips having surfaces which form continuations of the part-spherical surfaces of the cells project from the central portion axially beyond the parallel planes and these lips permit the introduction of the balls into the cells in an axial direction and retain the balls in the cells elastically.
    Type: Grant
    Filed: December 2, 1976
    Date of Patent: April 4, 1978
    Assignee: SKF Compagnie d'Applications Mecaniques
    Inventors: Jean Parmentier, Jacques Saurais, Gerard Carre
  • Patent number: 4080014
    Abstract: A slide articulation bearing assembly, in particular to be used in a tiltable converter arrangement, has sliding elements between the bearing inner and outer races, and force measuring devices between one of the bearing races and the sliding elements.
    Type: Grant
    Filed: August 12, 1976
    Date of Patent: March 21, 1978
    Assignees: Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesellschaft, SKF Kugellagerfabriken Gesellschaft mit beschrankter Haftung
    Inventors: Ernst Riegler, Manfred Schmidt, Manfred Memmel, Karl-Heinz Schutz
  • Patent number: 4080019
    Abstract: A self-centering clutch release bearing, having means for enabling its axial sliding on a tube guide, enabling substantial radial movement of the clutch release bearing, and insuring axial pressure so that the clutch release bearing remains entered after radial movement. A ring slides directly on the tube guide, and a sleeve fits inside the bearing's inner race. The ring fits in the sleeve and radial end surfaces of the ring engage end surfaces of the sleeve. Either the sleeve or the ring has a groove whose axial ends engage radial walls of the other.
    Type: Grant
    Filed: July 21, 1976
    Date of Patent: March 21, 1978
    Assignee: SKF Compagnie d'Applications Mecaniques
    Inventors: Thierry Flaissier, Francis Regazzoni, Max Risso, Claude Serville
  • Patent number: 4079914
    Abstract: Device having movable jaws for gripping the shank of a pin or bolt is provided with ridges or grooves on the jaws which mate with corresponding ridges or grooves on the shank. The jaws are mounted to slide toward and away from each other and this sliding movement is induced by linkage pivotally connected to the jaws. An abutment is provided for limiting the movement of one of the jaws so that actuation of the linkage causes movement of said one jaw until it strikes the abutment followed by movement of the other jaw.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: March 21, 1978
    Assignee: SKF Compagnie d'Applications Mecaniques
    Inventors: Georges Boudet, Alain Neron, Alain Jacquot