Patents Assigned to SKF
  • Axial rolling bearing
    Patent number: 4958947
    Abstract: An axial deep groove ball bearing is disclosed. This rolling bearing has a housing ring with a fastening rim located axially beyond the outer face of the housing ring. A ring of synthetic material or rubber is located between the fastening rim and a housing.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: September 25, 1990
    Assignee: SKF GmbH
    Inventors: Heinz Peter, Rainer Schurger
  • Drive device for pumps
    Patent number: 4955786
    Abstract: A drive device for pumps consists of a drive pulley to drive a shaft. The shaft assembly includes an inner bearing seated in the housing bore, an outer bearing seated on a neck of a pump cover, a cover disk with an outer edge, covering the outer bearing and the neck of the pump cover laterally from the outside and is connected to the drive pulley, and a center of the shaft, a spring for the automatic play eliminating adjustment of the radial and axial load-supporting outer and inner bearing.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: September 11, 1990
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Heinrich Kunkel, Heinz Kiener, Armin Olschewski
  • Ring spinning or ring twisting machine
    Patent number: 4947634
    Abstract: In a ring spinning or ring twisting machine the spindles of which each have an asynchronous motor as drive means, and the auxiliary apparatus thereof are driven by at least one electric motor having variable rotational speed, and the ratio of the rotational speeds of the electric motor driving the auxiliary apparatus and the asynchronous motors remains constant, a reluctance motor is used to drive the auxiliary apparatus. Two converters are used which are controlled in such a manner that the speed ratio remains constant.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: August 14, 1990
    Assignee: SKF Textilmaschinen-Komponenten GmbH
    Inventor: Wilhelm Sturwald
  • Preventing movement of an article along a shaft or bore
    Patent number: 4948320
    Abstract: To prevent movement of an article along a shaft or a bore, an element engages the article and engages the shaft or bore at locations forming an angle no greater than tan.sup.-1 .mu..The locations of engagement lie in a first plane extending perpendicular to a second plane in which lies the axis of the bore or shaft. A third plane extends perpendicular to the axis. The angle is between the first and third planes. .mu. is the coefficient of friction between the element and the bore or shaft.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: August 14, 1990
    Assignee: Skf (U K) Limited
    Inventor: Ronald F. Hamblin
  • Device for sealing and generating electrical pulses
    Patent number: 4946296
    Abstract: A device for sealing and generating electrical pulses in a bearing assembly including fixed and rotating bearing rings especially a wheel bearing for motor vehicles. The device consists of a sealing section on the fixed bearing ring with an embedded pulse generator for detecting rotational movement and a sealing section on the rotating bearing ring having cells a certain distance apart from each other which activate the pulse generator. The fixed bearing ring (4, 19) rotates with respect to the sealing section (2) which is secured against rotation by way of a machine element (1, 24), which holds the fixed bearing ring (4, 19).
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: August 7, 1990
    Assignee: SKF GmbH
    Inventors: Armin Olschewski, Robert Stolz, Josef Stork, Heinz Kiener, Georg Hochrein, Sven Benktander, Henri Haller, Hendrikus J. Kapaan
  • Method for the emptying of a package band and an arrangement for it
    Patent number: 4946339
    Abstract: An arrangement for the discharge of goods (50) from a package band (24) of flexible plastic material comprises a discharge board (60). The package band is provided with pockets (16) placed following one another and is moved along the discharge board so as to place the pockets in positions where a discharging device (71) moves a pusher roll (74) towards a receiving table (82). The pusher roll rests against the outer wall (11b) of the package band and pushes the goods (50) out of pockets (16) of the package band. A retaining device (64) is situated inside a tunnel (18) of the package band and holds the same in place while the pusher roll discharges the goods to the receiving table (82).
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: August 7, 1990
    Assignees: Pronova AB, Aktiebolaget SKF
    Inventors: Sven-Olof Berg, Ingemar Broden, Odvan Johansen
  • Bearing arrangement in rotary machines
    Patent number: 4944642
    Abstract: A rotary machine, such as a hammer drill, comprises a tool-carrying shaft (12), which is rotatably supported in the machine housing (11) by means of a ball bearing (24). The outer race ring (25) and the inner race ring (26) of the bearing are axially secured in the housing (11) and on the shaft (12) respectively. In order to make possible a limited axial movement of the shaft (12) relative to the housing (11) one of the race tracks (27) of the inner race ring (26) and the outer race ring (25) is formed cylindrical.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: July 31, 1990
    Assignee: SKF Nova AB
    Inventor: Borje Andersson
  • Method and device for examining the wear and friction properties of surface materials exposed to sliding friction
    Patent number: 4939922
    Abstract: Method for examining the sliding friction between exposed surfaces of different combinations of materials, characterized by the fact that a first test piece of a first type of material and a second test piece of a second type of material are moved against one another over a certain distance and under a certain load while a lubricant is applied between the exposed surfaces, whereby the required energy is measured and this step is subsequently repeated a number of times at various bulk temperatures of the lubricant, following which the measured energy consumption is plotted on a graph as a function of the bulk temperature of the lubricant.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: July 10, 1990
    Assignee: SKF Industrial Trading and Development Co. B.V.
    Inventors: Robert J. Smalley, Maarten Noordman
  • Braking device for drive belts
    Patent number: 4940448
    Abstract: In a braking device for a drive belt, sector-shaped damping elements are mounted near the swivel bearing of the braking device, in an annular section turned away from the drive belt. This arrangement permits the drive belt to be positioned very close to the swivel axis and saves space, particularly in engine blocks having a number of accessory items and little free space. The spring-loaded mounting of the braking device can be achieved by an axially adjoining flat coil springs in the area of the swivel bearing or by a helical spring in an offset position with respect to the swivel axis.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: July 10, 1990
    Assignee: SKF GmbH
    Inventors: Jurgen Kober, Manfred Brandenstein
  • Superparamagnetic liquids and methods of making superparamagnetic liquids
    Patent number: 4938886
    Abstract: Superparamagnetic liquids comprising:(A) magnetic particles in stable colloidal suspension; (B) an A-X-B dispersant wherein A is derived from a non-ionic surface active agent, B is a carboxylic acid group and X is a connecting group between A and B; and (C) a carrier liquid which is a thermodynamically good solvent for A but which does not form a stable superparamagnetic liquid with magnetic particles coated only with oleic acid.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: July 3, 1990
    Assignee: SKF Nova AB
    Inventors: Goran R. Lindsten, John E. Wyman
  • Method of manufacturing a gas suitable for the production of energy
    Patent number: 4936874
    Abstract: The present invention relates to a method of manufacturing a gas suitable for the production of energy, out of coal. The coal is gasified in counterflow with air-blast in a gasifier, and the gas generated is then mixed with a gas containing oxygen, in a ratio such that the quotient CO.sub.2 /CO in the resultant gas does not exceed 0.1, in order to crack tar substances occurring in the gas. The gas is thereafter introduced into a dolomite or lime shaft for removal of sulphur compounds, any remaining tar substances and to gasify any accompanying coal particles not yet gasified.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: June 26, 1990
    Assignee: SKF Steel Engineering AB
    Inventors: Sven Eriksson, Sven Santen
  • Thrust bearing sealing collar assembly
    Patent number: 4932796
    Abstract: Sealing device for a thrust bearing has a pair of bearing disks, including a pair of sealing collars (4, 5, 33, 34), and one of the collars being permanently seated on one of the bearing disks and the other collar being free to rotate on the other disk. The sealing collars (4, 5, 33, 34) are provided with integral sealing lips (29), which rest preferably against the facing end surfaces (30, 30a) of the bearing disks (1, 2).
    Type: Grant
    Filed: May 5, 1989
    Date of Patent: June 12, 1990
    Assignee: SKF GmbH
    Inventors: Rainer Schurger, Heinz Peter
  • Circuit arrangement for textile machines, particularly spinning machines having individually motor-driven spindles
    Patent number: 4931705
    Abstract: In a circuit arrangement for textile machines having a plurality of identical aggregates, each having a drive motor (1), particularly for spinning machines having individually driven spindles, respective motor bars are provided for the connection of each aggregated. Each motor bar is connected with a ground plate which is provided with energy supply lines and has a predetermined number of bar connectors. At least the energy supply lines of a minimum of two ground plates are connected with each other and with a connecting line (9) common to them which leads to a central energy supply device (2) of the machine.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: June 5, 1990
    Assignee: SKF Textilmaschinen-Komponenten GmbH
    Inventor: Stefan Wieczorek
  • Method of making a seal for bearing assembly
    Patent number: 4928371
    Abstract: Bearing assembly comprising inner and outer rings and a plurality of rolling elements in the annular space between the rings means having a seat on the inner peripheral surface of one of the rings facing the annular space incuding a throat section having a saw-toot shaped axial profile, a seal system at least at one axial end of the annular space and having at least one general rigid shield member, a cover member of resilient material covering at least a portion of the shield member, the shield member having a separate sleeve-shaped portion and with interposition of at least part of the elastomeric covering, in the annular seat with the sleeve portion of the armature being placed coaxially with the rings and presenting a separate rim, facing towards the outside of the annular cavity, folded over so as to engage in the sawtooth-shaped throat to immobilize the shield axially in the annular seat.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: May 29, 1990
    Assignee: RIV-SKF Officine di Villar Perosa S.p.A.
    Inventors: Franco Colanzi, Angelo Vignotto
  • Self-centering freewheel mechanism
    Patent number: 4928801
    Abstract: A self-centering freewheel mechanism comprises at least one cage containing wedging cams and U-shaped bearings with inner and outer branches facing towards the cage. Radial protuberances on the cage cooperate elastically with at least one of the surfaces of the branches of each bearing facing towards the inside of the U-shape to fasten the cage and the bearings together in the axial direction.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: May 29, 1990
    Assignee: SKF France
    Inventor: Jean M. Laurent
  • Pocket cage
    Patent number: 4927276
    Abstract: A pocket cage formed from a deformable sheet has a pair of side rings connected by a plurality of webs, each web having a projection comprising a folding of web material formed by bending at a plurality of bending points. At least the material in the middle of each web has reduced resistance to bending relative to the material in areas of each web other than the bending points. This folding is produced by applying opposing pressing forces on the front faces of the side rings using a tool. By placement of the middle bending point on either the outer surface or the bore surface of the web, the projection can be suitably selected to be radially inwardly or outwardly directed respectively.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: May 22, 1990
    Assignee: SKF GmbH
    Inventors: Robert Stolz, Knut Mirring, Rudolf Hein, Dieter Simon, Lothar Raab, Peter Glatz
  • Device in rolling bearings
    Patent number: 4923313
    Abstract: Two rolling bearings, (10, 11) are mounted in pair and arranged to take up axial and radial loads. In order to prevent occurrence of abrasion corrosion the outer race rings (17, 18) are mounted in sleeves (19, 20) which to a limited extent are movable axially and radially relative to the bearing housing (13). The sleeves (19, 20) are designed with tapering contact surfaces (21, 22) adapted to center the sleeves during operation.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: May 8, 1990
    Assignee: Aktiebolaget SKF
    Inventor: Gunnar Bergling
  • Device for moving at least a part of a vehicle in a sideward direction
    Patent number: 4923361
    Abstract: A device for providing sideward displacement of a vehicle having vertically adjustable members such as a forklift truck, comprising at least one displacement member attached to said vertically adjustable member, said displacement member being pivotably movable from an active position to an inactive position, said device including a pedal to move the displacement member from said inactive position to said active position upon raising said adjustment member to a raised position, whereby lowering of said adjustable member causes contact of said displacement member with the ground, and whereby continued lowering of the adjustable member permits pivoting of the displacement member towards its inactive position to simultaneously displace at least a portion of the vehicle in a sideward direction.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: May 8, 1990
    Assignee: SKF Nova AB
    Inventor: Rune Adolfsson
  • Bearing assembly
    Patent number: 4919550
    Abstract: Bearing assembly, in particular for an electric motor of a household appliance, which has a bearing sleeve of a synthetic material forming the running surface of the bearing, a shaft mounted in said sleeve, and a lubricant between the running surface of the sleeve and the shaft. The bearing sleeve consists of a synthetic material in which particles of a magnetic material are imbedded. The lubricant is a magnetic lubricant of which so small a quantity is present between the shaft and the running surface of the bearing sleeve that the lubricant forms an annular film of small axial breadth relative to the axial dimension of the sleeve.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: April 24, 1990
    Assignee: SKF Industrial Trading & Development Company, B.V.
    Inventor: Herman Lankamp
  • Conveyor chain link
    Patent number: D307707
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: May 8, 1990
    Assignee: AB SKF
    Inventors: Goran Abbestam, Leif Lachonius