Patents Assigned to SKF
  • Ratchet free wheel device
    Patent number: 6568517
    Abstract: Ratchet free wheel device comprising a first element 1 provided with cavities 14, a number of ratchets 28 able to project into said cavities 14, and a second element 2 for supporting the ratchets 28 so that the second element 2 rotates as one with the first element 1 in one direction of relative rotation of said first and second elements and is free to rotate in an opposite direction of relative rotation. The device comprises a means of controlling the ratchets 28 which is capable of preventing them from projecting into said cavities 14 so that the second element 2 is free to rotate with respect to the first element 1 in two opposite directions of relative rotation of said first and second elements when said control means is active.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: May 27, 2003
    Assignee: SKF France
    Inventors: Marc Le-Calve, Christophe Houdayer, Virginie Hamada
  • Bearing unit, in particular railway axlebox bearing unit, having improved anti-fretting behavior
    Patent number: 6561559
    Abstract: A unit comprises a double row taper rolling element bearing (1) having an inner ring means (12, 13) and an outer ring means (6), said inner ring means being fitted on an axle stub (5) between two opposite mounting faces (7, 10), means (19) being provided for preventing fretting corrosion between at least one of said mounting faces and the inner ring means. At least one mounting face and the inner ring means engage each other by means of a polymer support ring (19). The bearing unit can be applied as a railway axlebox bearing unit.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: May 13, 2003
    Assignee: SKF Engineering and Research Centre B.V.
    Inventors: John Vincent Skiller, Vedran Tadic, Marc Defossez, Dario Bertorelli, Maurizio Martinetti, Enrico Rolih
  • Suspension thrust bearing with retaining means
    Patent number: 6558043
    Abstract: Suspension thrust rolling bearing device of the type comprising a first ring 12, a second ring 13 made of thin sheet, a row of rolling bodies 14 arranged between the two rings, a cap 16 secured to the first ring and a plate 11 capable of forming a seat for a spring 10. The plate 11 comprises a means for securing it directly axially to the second ring 13 or to the cap 16.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: May 6, 2003
    Assignee: SKF France
    Inventors: Eric Beghini, Christophe Houdayer
  • Actuator having a central support, and brake calliper comprising such actuator
    Patent number: 6554109
    Abstract: An actuator (7) comprises a housing (8) which contains a screw mechanism (9) and a motor (10) which is drivably connected to the screw mechanism (9), said screw mechanism (9) providing a linear movement in response to a rotational movement of the motor (10), and comprising a screw (12) and a nut (13) one of which is supported rotatably with respect to the housing (8) by means of a rolling element bearing (25, 62). Support means (22, 61) have been provided which extend axially with respect to the screw mechanism (9), said support means (22, 61) engaging the housing (8), and supporting the screw mechanism (9) so as to take up the axial loads exerted on said screw mechanism (9).
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: April 29, 2003
    Assignee: SKF Engineering and Research Centre B.V.
    Inventors: Armin Herbert Emil August Olschewski, Hendrikus Jan Kapaan, Clair Druet, Thomas Wilhelm Fucks, Manfred Antensteiner, Andries Christian Rinsma, Jiri Gurka, Alexander Jan Carel De Vries
  • Temperature monitoring device
    Patent number: 6549134
    Abstract: Temperature monitoring device for monitoring or controlling the temperature of an object, and preferably indicating and/or recording abnormal temperature variations of the object includes a housing having a contact portion for contacting the object, a sensing member in heat transferring contact with the contact portion for emitting signals representative of the object temperature, a control device that receives signals from the sensing member and actuates an indicator, a power source connectable to the sensing member, the control device and the indicator, and a switch biased to interrupt the power supply to the sensing member, control device and indicator. A portion of the housing is movable between a first position where the switch interrupts the power supply and a second position in which the housing portion urges the switch to the power supply position.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: April 15, 2003
    Assignee: SKF Mekan AB
    Inventors: Sture Östling, Uno Axelsson
  • Unitized tone ring assembly
    Patent number: 6549001
    Abstract: A tone ring assembly for use on a rotatable machine part. The tone ring is able to generate a varying voltage output when rotated at varying speeds. A fixed position magnetic sensor detects this voltage. The tone ring comprises an axially extending main body portion having a plurality of areas able to generate a voltage upon rotation. A retainer having at least one radial flange prevents axial movement of the tone ring and the tone ring includes ribs and spaces on its inside diameter to permit oil to pass therethrough.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: April 15, 2003
    Assignee: SKF USA Inc.
    Inventors: David Dobbs, Mark F. Spreitzer, Morgan J. Bullard
  • Hub and break rotor assembly for a vehicle wheel
    Publication number: 20030068109
    Abstract: A wheel assembly includes a hub and bearing unit in which an annular hub has an axial cylindrical seat with an outer ring of a bearing fitted thereto with radial interference. The ring is locked axially on the hub between a pair of annular rims which project radially outwardly from the outer cylindrical surface of the ring and have been cold-deformed so as to engage two opposite surfaces of the hub. The hub also has an outer radial flange for fixing a brake rotor which in turn has an inner radial flange arranged substantially in the same plane as the flange. The brake rotor is locked axially on the hub by at least one cold-deformed annular rim which projects radially outwardly from the flange on the hub so as to engage a respective one of two radial surfaces of the flange.
    Type: Application
    Filed: October 8, 2002
    Publication date: April 10, 2003
    Applicant: SKF INDUSTRIE S.p.A.
    Inventors: Marco Brunetti, Andrea Griseri
  • Hub and break rotor assembly for a vehicle wheel
    Publication number: 20030066722
    Abstract: A hub and brake rotor assembly for a vehicle wheel includes a hub with an axially central cylindrical seat for a bearing. The hub has a cylindrical portion in which the seat for the bearing is formed, and a radially outward flange formed in one piece with a brake rotor, such as a disc or a drum.
    Type: Application
    Filed: September 27, 2002
    Publication date: April 10, 2003
    Applicant: SKF INDUSTRIE S.p.A.
    Inventors: Michele Musso, Domenico Bosco
  • Rolling structure steel
    Patent number: 6540847
    Abstract: Rolling structure steel, comprising: 0.90-100% by wt. C; 0.95-1.05% by wt Si; 0.25-0.45% by wt Mn; 0.015% by wt. S max.; 0.025% by wt. P max.; 1.30-1.50% by wt. Cr, and 0.17-0.20% by wt. Mo. Preferably this steel is produced by austenising at 860+20° C., quenched in oil and tempered at 240+20° C. In this way steel is obtained having a high rolling contact fatigue strength and dimensional stability at elevated temperature operating conditions.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: April 1, 2003
    Assignee: SKF Engineering & Research Centre B.V.
    Inventor: John Michael Beswick
  • Sealing device for rolling bearings
    Publication number: 20030059141
    Abstract: Sealing device (1) for a rolling bearing (2) which presents an inner race (5), which is axially blocked by a blocking element (4) which is suitable for being arranged in contact with a reference element (6); the device (1) being provided with a distance ring (8) interposed between the blocking element (4) and the reference element (6); the device (1) also being provided with snap fastening means (9) which are integral to the distance ring (8) in order to fasten the distance ring (8) itself to the blocking element (4); the device (1) also being provided with an external covering (10) which is made of rubber material and which is arranged outside the snap fastening means (9) in order to guarantee at least one static seal between the inner race (5) and the blocking means (4) and between the blocking means (4) and the reference element (6).
    Type: Application
    Filed: September 4, 2002
    Publication date: March 27, 2003
    Applicant: SKF Industrie S.P.A.
    Inventors: Angelo Vignotto, Claudio Savarese
  • Annular element for a rolling bearing
    Publication number: 20030059143
    Abstract: An annular element for a rolling bearing comprises a cylindrical surface around the circumference of which a groove, the radial and axial depth of which are variable around the circumference, is formed. The cylindrical surface is suitable for being over-moulded with a plastics material to form a body which is fixed firmly for rotation with the annular element and has a plastics projection complementary with the groove. The projection can cooperate with the groove to prevent relative rotation between the annular element and the body.
    Type: Application
    Filed: September 24, 2002
    Publication date: March 27, 2003
    Applicant: SKF INDUSTRIE S.p.A.
    Inventors: Gianfranco Pairone, Francesco Gallucci
  • Method and device for monitoring a bearing arrangement
    Patent number: 6526830
    Abstract: A method and a device for monitoring a bearing arrangement, having at least one bearing, in a mounting element of a roller journal bearing of a roller in a stand of a rolling mill train are designed to initiate upkeep or repair work on the bearing arrangement at the correct time. The method involves measuring a process quantity at the bearing or in an area adjoining the bearing, providing an evaluation device with the measured value of the process quantity, comparing the measured value with a stored preset value, and triggering a signal as soon as the measured value exceeds or falls below the stored preset value.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: March 4, 2003
    Assignee: SKF GmbH
    Inventors: Jürgen Scholl, Rüdiger Sontheimer
  • Asymmetric angular contact bearing
    Patent number: 6527448
    Abstract: An asymmetric angular contact bearing comprises an inner ring (2) and an outer ring (3) each defining a raceway, at least one ring being provided with a high shoulder (6) and a low shoulder (7) which border the raceway of said ring, as well as a series of rolling elements (8) which are in rolling contact with the raceways. The low shoulder is provided with a circumferential groove (9), a ring member (10) being accommodated in said groove (9) for contacting the rolling elements (8).
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: March 4, 2003
    Assignee: SKF Engineering and Research Centre B.V.
    Inventors: Jiri Gurka, Alfred Moser, Ferdinand Schweitzer, Manfred Antensteiner, Clair Druet, Thomas Fucks, Hendrikus Jan Kapaan
  • Sealed suspension thrust bearing
    Patent number: 6524013
    Abstract: A suspension thrust bearing includes a first race, a second race, a row of rolling members disposed between the two races, a cap fastened to the first race and a sealing member that is fastened to a rotary or non-rotary member and cooperates with a respectively non-rotary or rotary surface. The sealing member includes a seal that is initially separate from the cap. The seal is mounted on the cap. It has a bead which is force-fitted in an annular groove in the cap. The seal is disposed axially between the cap and the second race or another cap fastened to the second race and has a lip that comes into rubbing contact with a bearing surface formed by a surface of the second race or of the other cap fastened to the second race.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: February 25, 2003
    Assignee: SKF France
    Inventors: Eric Beghini, Christophe Houdayer, Jean-Pierre Collognat
  • Device for measuring the angular speed of rolling contact bearings
    Publication number: 20030031391
    Abstract: Device (1) for measuring the angular speed of rolling contact bearings (2) presenting a protective shield (5) which is mounted onto the rolling contact bearing (2), a phonic wheel (6) which is mounted under the protective shield (5), and a sensor (7), which is mounted onto a stud (8) which is outside the rolling contact bearing (2) and which is provided with an external frontal surface (11) which faces the phonic wheel (6); the protective shield (5) is defined by a rigid wall (18), which is mounted onto a fixed race of the rolling contact bearing (2), and which is provided with at least one passing housing (22) for housing the frontal surface (11) of the sensor (7) and for isolating the frontal surface (11) itself from the outside by means of a rubber membrane (23) which is suitable for remaining in direct contact with the frontal surface (11)
    Type: Application
    Filed: June 12, 2002
    Publication date: February 13, 2003
    Applicant: SKF INDUSTRIE S.p.A.
    Inventors: Angelo Vignatto, Claudio Savarese
  • Digital vibration coupling stud
    Patent number: 6513386
    Abstract: A vibration coupling stud for use in a vibration monitoring system includes digital memory and temperature sensing devices. Data is transferred between the vibration coupling stud and a vibration monitor. Data stored in the stud may include asset identification code, measuring point identification, prior measurement data, machine or bearing part numbers, and alarm limits.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: February 4, 2003
    Assignee: SKF Condition Monitoring
    Inventors: John T. Barclay, Stephan L. Thompson, William A. McCarty
  • Sealing device for a rolling contact bearing
    Publication number: 20030016892
    Abstract: Sealing device (1) for a rolling contact bearing (2) presenting an annular sealing lining (5), a protective shield (6) for the lining (5) which is mounted on the outside of the lining (5) itself, and an encoder (15) which is integral to the shield (6) and which is protected by a covering element (16) arranged opposite the shield (6) in relation to the encoder (15).
    Type: Application
    Filed: June 12, 2002
    Publication date: January 23, 2003
    Applicant: SKF INDUSTRIE S.p.A.
    Inventors: Angelo Vignotto, Pierangelo Cherio
  • Method and device for monitoring a bearing arrangement
    Patent number: 6508128
    Abstract: A method and device for monitoring a bearing arrangement, having at least one bearing, in a housing of a roller journal bearing of a roller in a continuous casting installation are designed to initiate upkeep or repair work on the bearing arrangement at the correct time. The method involves measuring a value of a process quantity at the bearing or in an area adjoining the bearing, providing an evaluation device with the measured value of the process quantity, comparing the measured value with a stored preset value, and triggering a signal as soon as the measured value exceeds or falls below the stored preset value.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: January 21, 2003
    Assignee: SKF GmbH
    Inventor: Jens Bode
  • Bearing arrangement and method for fixing at least one bearing in place in a bearing retainer
    Patent number: 6505973
    Abstract: A method for fixing at least one bearing in a depression of a bearing retainer involves deforming a portion of the bearing retainer to cause a portion of the bearing retainer to form an overlapping connection of the bearing which axially retains the bearing in the depression. In the first stage of the two-stage deformation process, a first partial area of the bearing retainer is deformed compress the material forming the bearing retainer. In the second stage of the deformation process, a second partial area of the bearing retainer is deformed to form the overlapping connection, in the axial direction, between the bearing and the bearing retainer.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: January 14, 2003
    Assignee: SKF GmbH
    Inventors: Burkhard Buchheim, Berthold Beyfuss, Helmut Hauck, Peter Horling
  • Insert for bearing storage box
    Patent number: D469957
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: February 11, 2003
    Assignee: Aktiebolaget SKF
    Inventors: Christian Fajers, Anders Sahlgren, Lars Stigsj{umlaut over (oo)}