Patents Assigned to SKF
  • Linear electromechanical screw actuator for a parking brake
    Patent number: 7337883
    Abstract: The actuator comprises a tubular nut (22) coupled by means of an external thread (21) to the casing (12) of the actuator. The nut has an internal thread (23) opposite the external thread, for engaging a threaded rod (11) which is prevented from rotating with respect to the casing. A geared motor (13, 14) rotates a pinion (15) which, through two straight spur gears (161, 162), causes the nut (22) to bring about a screwing movement along a longitudinal axis (x), while the rod (11) translates rapidly in telescopic manner with respect to the casing (12). The spur gears have a pinion portion of greater diameter (161a, 162a) meshing with the pinion (15), and a splined shaft portion (161b, 162b) meshing with a pinion member (22b) integral with the nut (22).
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: March 4, 2008
    Assignee: Aktiebolaget SKF
    Inventor: Andreas Geyer
  • Linear electromechanical screw actuator for parking brake
    Patent number: 7337882
    Abstract: A linear electromechanical actuator of the screw type for a parking brake including a tubular nut (22) coupled by means of an external thread to the casing (12) of the actuator and operated to perform a screwing movement about and along a longitudinal axis (x). The nut has an internal thread (23) opposite the external thread, for engaging a threaded rod (11) which is prevented from rotating with respect to the casing. Operation of the electrical motor (13) brings about a telescopic movement of the nut (22) and the rod (11) with respect to the casing (12), with a rapid linear translation of the rod (x).
    Type: Grant
    Filed: July 5, 2004
    Date of Patent: March 4, 2008
    Assignee: Aktiebolaget SKF
    Inventor: Andreas Geyer
  • Bearing with Reduced Reflow
    Publication number: 20080050059
    Abstract: A method for lubricating the rolling contacts in a rolling element bearing having at least two rings which are each provided with raceways, as well as a at least one series of rolling elements which are in contact with the raceways, comprises the steps of providing the raceway surface of at least one of the rings and rolling elements with a pattern which has a dominant oblique characteristic in relation to the axis of the bearing, providing a lubricant on the raceway surface, and making the rolling elements overroll over the patterned raceway surface over at least the full circumference of the raceway so as to displace the lubricant in the axial direction under the influence of the engagement of the rolling elements with the pattern.
    Type: Application
    Filed: September 20, 2004
    Publication date: February 28, 2008
    Applicant: AB SKF
    Inventors: Pieter Martin Lugt, John Howard Tripp
  • Multi-Revolution Absolute High-Resolution Rotation Measurement System And Bearing Equipped With Such A System
    Publication number: 20080036454
    Abstract: A rotation measurement system comprises a rotatable annular magnetic encoder 16 carrying a series of encoding elements 23 arranged around the circumference of the encoder according to a periodic pattern, characterized in that it comprises a primary sensor assembly 38 comprising at least a primary magnetic sensor 38 disposed facing the encoding elements for detecting the angular position of the encoder with a discrete angular resolution of a fraction of a revolution equal to or less than one period of the encoder and an electronic counter for the number of fractions of a revolution made, and a secondary sensor assembly comprising secondary magnetic sensors 24a to 24d, 25a to 25d disposed facing the encoding elements for determining an absolute position of the encoder between two positions separated by at least one fraction of a revolution.
    Type: Application
    Filed: October 8, 2004
    Publication date: February 14, 2008
    Applicant: AKTIEBOLAGET SKF
    Inventor: Franck Landrieve
  • CYCLIC TIME AVERAGING FOR MACHINE MONITORING
    Publication number: 20080033669
    Abstract: A cyclic time averaging method is directed at processing time-domain vibration data of the machine to produce an averaged time waveform over a selected cyclic time period. It is not necessary to employ a triggering signal to obtain the averaged time waveform.
    Type: Application
    Filed: October 17, 2007
    Publication date: February 7, 2008
    Applicant: SKF Condition Monitoring, Inc.
    Inventor: Johannes Boerhout
  • COMPOSITE DRAIN PLUG
    Publication number: 20080019795
    Abstract: A composite drain plug for an automobile engine. The drain plug is made up of a hollow metal sleeve that is flanged at one end and closed at the other end. There is a core portion filling the hollow sleeve and having a head portion and a stub flange adjacent the flanged end of the sleeve. A circumferential sealing bead is bonded to the stub flange. The core portion is a glass-filled polymer and the sealing bead is made from a material which includes a cross-linked elastomer dispersed in a thermoplastic carrier.
    Type: Application
    Filed: July 18, 2006
    Publication date: January 24, 2008
    Applicant: SKF USA INC.
    Inventors: Dennis Nelson Denton, Thomas Sochacki
  • Cover for tightly sealing a device
    Patent number: 7316214
    Abstract: A cover for tightly sealing a device comprises at least one elastomer part which is designed to fit tightly against a contact surface of a device, and another part which follows the elastomer part, with the elastomer part being arc-shaped in a transition area to the other part.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: January 8, 2008
    Assignee: AB SKF
    Inventor: Hans-Joachim vom Stein
  • IMPROVED LARGE DIAMETER SEALS
    Publication number: 20080001365
    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: Application
    Filed: June 29, 2006
    Publication date: January 3, 2008
    Applicant: SKF USA INC.
    Inventor: Vester J. Lequire
  • Seal Arrangement, Bicycle Pedal Crank Bearing and Bicycle Hub with Seal Arrangement
    Publication number: 20070296155
    Abstract: The sealing arrangement of a bicycle comprises the following features: a first element which extends in the axial direction; a second element which extends in the axial direction and at least partly encloses the first element; the elements are mounted in such a way that they can rotate in relation to each other; a space to be sealed, which extends between the two elements, is in the region of at least one axial end section of one of the elements closed with a sealing ring that is arranged between the two elements; the sealing ring is attached to the second element and comprises a sealing lip which makes sealingly contact with a surface extending radially and completely encircling the first element; and bottom bracket ball bearing and/or bicycle hub with the sealing arrangement.
    Type: Application
    Filed: August 5, 2005
    Publication date: December 27, 2007
    Applicant: AB SKF
    Inventors: Jesko-Henning Tanke, Bernd Stephan
  • Frictionless shaft seal
    Publication number: 20070296153
    Abstract: A sealing element for sealing a shaft comprises a stiffening part, a first elastomer part connected to the stiffening part and adapted to adjoin the housing part and provide a static seal relative, and a second elastomer part of an elastomer material different from the elastomer material forming the first elastomer part. The second elastomer part is connected to the stiffening part and comprises a sealing section adapted to adjoin the shaft to seal a space. The sealing section comprises a return structure for returning a leaking fluid to a space to be sealed. The sealing section also comprises a region at one axial end portion of the sealing section which is peripherally closed in itself and extends along an inner surface of a circular cylinder portion of the sealing section that is adapted to adjoin and seal the shaft as the shaft is not turning.
    Type: Application
    Filed: June 1, 2007
    Publication date: December 27, 2007
    Applicant: AB SKF
    Inventors: Jurgen Kurth, Jurgen Netzer, Wolfgang Irmen, Willy Seewald
  • Low-friction annular sealing assembly for a centrifugal pump, in particular an internal combustion engine cooling liquid pump
    Publication number: 20070290453
    Abstract: A sealing assembly including a sealing member made of elastomeric material and PTFE; a supporting armature embedded in the elastomeric material; and, preferably, an annular L-shaped shield cooperating, in use, with the sealing member. The supporting armature has a sleeve portion; and a radial flange portion, which extends towards an axis of symmetry of the sleeve portion, and partly supports a radial portion of the sealing member, projecting towards the axis of symmetry and made of elastomeric material with no supporting armature.
    Type: Application
    Filed: May 25, 2007
    Publication date: December 20, 2007
    Applicant: AKTIEBOLAGET SKF
    Inventor: Claudio Foti
  • Sealed Bearing
    Publication number: 20070292065
    Abstract: A sealed, self-aligning bearing includes an inner bearing ring with race tracks for rolling bodies, and an outer bearing ring with a race track for the rolling bodies, positioned radially outside the inner bearing ring. At least at one side of the bearing, a bearing seal is arranged axially outside the race tracks and bridges the space between the inner and outer bearing rings. The bearing seal has an outer annular rim fitted in an annular groove in the inner surface of the outer bearing ring and an inner annular rim arranged to slidingly contact the outer surface of the inner bearing ring. The outer rim and the inner rim of the bearing seal are interconnected by an intermediate member formed as a bellows-like thin membrane able to alternatively be stretched and compressed for permitting the bearing rings of the self-aligning bearing to make displacements and/or angular misalignments.
    Type: Application
    Filed: July 7, 2005
    Publication date: December 20, 2007
    Applicant: Aktiebolaget SKF
    Inventor: Johan Falk
  • Fibrous assembly for a composite part, to a composite part and to a method for manufacturing such a composite part
    Publication number: 20070293110
    Abstract: The fibrous assembly (1) is intended to constitute a fibrous reinforcement for a composite part. It comprises at least two preforms (11, 13, 15, 17), each of which includes stacked fibrous cloths. Each preform includes at least one structure (111, 131, 151), the structure (111) of a first preform (11) being substantially complementary to the structure (131) of the second preform (13). The first and second preforms are adapted to be fitted one into the other by engagement of their respective structures, then firmly connected by the injection of polymer resin.
    Type: Application
    Filed: June 13, 2007
    Publication date: December 20, 2007
    Applicant: SKF Aerospace France
    Inventors: Jean-Michel Buchin, Michel Genot
  • Rolling bearing for use in a cryogenic pump
    Publication number: 20070292066
    Abstract: A rolling bearing for use in a cryogenic pump where the bearing is submerged in fluid of a temperature below ?100 degrees centigrade, and incorporating an inside and an outside race of stainless steel, a plurality of rolling bodies positioned between the inside and outside races, and a polymeric cage spacing apart the rolling bodies between the races, wherein the inside and outside races consist of a super-tough martensitic high-nitrogen stainless steel, having a very fine material structure.
    Type: Application
    Filed: November 2, 2006
    Publication date: December 20, 2007
    Applicant: Aktiebolaget SKF
    Inventors: Lars Kahlman, Paul Dietl, Steuart Horton
  • Compressor Shaft Seal
    Publication number: 20070284831
    Abstract: A seal for a compressor for sealing a shaft comprises a first seal part with a sealing edge which is provided on a circular cylindrical surface along a line which deviates from a circular shape and which is closed in itself in the peripheral direction for adjoining and sealing the shaft, and a second seal part with a sealing section which is intended to adjoin the shaft and which is hollowly cylindrical when it adjoins properly with the inside surface which comprises a return structure for a fluid.
    Type: Application
    Filed: June 8, 2007
    Publication date: December 13, 2007
    Applicant: AB SKF
    Inventor: Jurgen Kurth
  • Connection device for connecting a rim to a wheel hub
    Patent number: 7303239
    Abstract: Connection device (10) for connecting a rim (20) to a wheel hub (30) presenting a peripheral connecting outline (11), which is integral with a support body (31) of the wheel hub (30), and a complementary connecting outline (12), which is obtained circumferentially along a mounting border (25) of the rim (20), and which presents a shape which is complementary to the peripheral connecting outline (11) in order to render angularly integral in relation to each other the rim (20) of the wheel hub (30); the peripheral connecting outline (11) and the complementary connecting outline (12) both presenting a radius (R) of angularly variable dimensions with continuity on a plane with is transverse to the rotation axis (A), and are both provided with at least one respective convex portion (13) (14) in relation to the rotation axis (A).
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: December 4, 2007
    Assignees: Aktiebolaget SKF, Miganti International, Ltd.
    Inventors: Jean-Gérard Loustanau, Andrea Griseri, Marcus Caldana
  • MECHANICAL END FACE SEAL WITH ULTRAHARD FACE MATERIAL
    Publication number: 20070267820
    Abstract: An end face seal having two thin, opposed faces of a composite PDC/tungsten carbide or like material for example of a thickness of from about 2 to 5 mm to about 10 to 15 mm, brazed or adhesively adhered by an epoxy resin to a substrate of tungsten carbide or silicon carbide/nitride formed in a ring shape. Thereafter, the PDC layer is finish lapped to a flatness of about 1 to about 10 helium lightbands, with a rough lapping to 3 or 4 helium lightbands, and a finish lapping of about 1 helium lightband.
    Type: Application
    Filed: May 16, 2006
    Publication date: November 22, 2007
    Applicant: SKF USA INC.
    Inventor: Kevin Martin
  • Sealing Arrangement and Link of a Chain with Said Sealing Arrangement
    Publication number: 20070267821
    Abstract: A sealing arrangement-used to create a seal between a first (12) part of a chain and a second (14) part of a chain, wherein said second part can at least be pivoted in relation to the first part, exhibiting the following features: a sealing ring (40) with an annular sealing lip (42) for sealing a lubricant area between parts which can be pivoted towards each other, an elastic ring (60) which can be fixed to one of the parts and which can be used to exert pressure on the sealing ring; in addition to a supporting ring (50) which is arranged between the sealing ring and the elastic ring; and link of a chain provided with said sealing arrangement.
    Type: Application
    Filed: June 27, 2005
    Publication date: November 22, 2007
    Applicant: AB SKF
    Inventors: Hans-Joachim Vom Stein, Wolfgang Korte, Marcus Stojek
  • Mounting bracket, rolling bearing and corresponding assembly method
    Patent number: 7290351
    Abstract: A bracket includes a fixing piece on a rotation element (3), said fixing piece comprising a body (22) in the general form of a ring, provided with an annular radial projection (23). The body includes an opening (33) which permits a variation in the diameter of said body (22) on assembly with engagement of the projection (23) in a corresponding groove (9) on the rotation element (3) to give a radial interference fit. A bar (28) prevents a variation in the diameter of the body (22) as above after the assembly thereof.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: November 6, 2007
    Assignee: Aktiebolaget SKF
    Inventor: François Niarfeix
  • Cyclic time averaging for machine monitoring
    Patent number: 7289919
    Abstract: A cyclic time averaging method is directed at processing time-domain vibration data of the machine to produce an averaged time waveform over a selected cyclic time period. It is not necessary to employ a triggering signal to obtain the averaged time waveform.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: October 30, 2007
    Assignee: SKF Condition Monitoring Inc.
    Inventor: Johannes I. Boerhout