Patents Assigned to Ina Walzlager Schaeffler oHG
  • Patent number: 7108621
    Abstract: A tensioner for a chain, includes a tensioner piston bearing upon a chain and guided by a cylinder for movement in the direction of the chain. The cylinder and the piston define a pressure chamber for receiving hydraulic fluid, wherein hydraulic fluid is able to escape from the pressure chamber via a leakage gap. A control member is provided to at least reduce the leakage gap in size, when a pressure in the pressure chamber increases.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: September 19, 2006
    Assignee: INA Wälzlager Schaeffler oHG
    Inventors: Thomas Ullein, Bolko Schuseil
  • Patent number: 7041020
    Abstract: The invention relates to a deflection pulley (1), intended for a traction drive, which includes a rolling-contact bearing as well as a ring body (4). A securing screw (8) as well as a spacer sleeve (9) serve as retaining elements. In order to provide a transport safety system (17), the spacer sleeve (9) is provided with at least one radial inwardly directed projection (18) which radially overlaps a threaded section (20) of the securing screw (8).
    Type: Grant
    Filed: July 14, 2001
    Date of Patent: May 9, 2006
    Assignee: INA Wälzlager Schaeffler OHG
    Inventor: Johann Singer
  • Patent number: 6979131
    Abstract: A multiple-row radial bearing with at least one bearing race and pertaining rolling bodies, with the bearing race having at least one central collar, is characterized in that the central collar of the bearing race is formed by a single-piece ring (11), which is provided with a slot (12) and has variable diameter, for insertion in a circumferential groove (10).
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: December 27, 2005
    Assignee: Ina Wälzlager Schaeffler OHG
    Inventors: Roland Lippert, Christoph Becker
  • Patent number: 6904679
    Abstract: A linear rolling bearing has a guide carriage (1) that is U-shaped in cross-section and has two U-legs (6). The guide carriage (1) is slidably supported through balls (3) on two longitudinal sides of a guide rail (2). Each U-leg (6) comprises on an inner surface opposing the guide rail (2) a ground raceway (10) for the balls (3). The raceway (10) is made by a grinding wheel whose diameter is larger than the diagonal dimension of the carriage cavity (7). According to the invention, a stop surface (12) having a retaining contour for a guide member (4) containing the balls (3) is configured on a guide rail-distal outer surface of each U-leg (6) of the guide carriage (1), and the raceway (10) on one of the two U-legs (6) and the stop surface (12) having the retaining contour on the other of the two U-legs (6) are made in common in one work step by the grinding wheel.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: June 14, 2005
    Assignee: Ina Walzlager Schaeffler oHG
    Inventor: Heinz Greiner
  • Patent number: 6892685
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: May 17, 2005
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Patent number: 6889641
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: May 10, 2005
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Patent number: 6857977
    Abstract: The invention relates to a tensioner (1) for a traction drive with a rotationally fixed housing (2) to a side of which a rotatable swivel arm (10), provided with a rotatable tension roller, is associated. A torsion spring (7) is placed between the housing (2) and the swivel arm (10) for loading the swivel arm (10) in the direction of an end position. Support of the tension spring (7) is realized by an insert (17a) placed in a circular ring shaped space (16) radially defined by a housing portion and the torsion spring (7).
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: February 22, 2005
    Assignee: INA Wälzlager Schaeffler oHG
    Inventors: Thomas Bertelshofer, Alfred Strasser, Thomas Ebner, Andreas Lang
  • Patent number: 6820514
    Abstract: A synchronizer body (1) of a synchronizing device for manual transmissions comprising a base body (2) made out of sheet metal by shaping, an inner toothing (11), and an outer toothing (10) and at least one reception (5) formed in the base body (2) for receiving a spring-loaded detent element (7) forms an assembled unit with the spring-loaded detent element (7).
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: November 23, 2004
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Josef Schwuger, Rudolf Sinner, Hartwig Waldert
  • Patent number: 6822349
    Abstract: A linear motor includes a secondary part (1) having several permanent magnets (4) disposed behind one another with alternating orientation of the polarity, or excitation windings. These permanent magnets (4) or excitation windings are wound helically around a rotation axis. Furthermore, there is provided a primary part (2) having a current-carrying winding disposed in parallel relationship to the permanent magnets (4) or excitation windings and arranged about the rotation axis such that a magnetic traveling field travels helically about the rotation axis.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: November 23, 2004
    Assignee: Ina Wälzlager Schaeffler oHG
    Inventors: Erich Lunz, Frank Dürschmied
  • Patent number: 6811507
    Abstract: A continuously variable, conical disk transmission including a torque-transmitting member in the form of a plate-link chain or a thrust link band. The chain includes plate links that are interconnected by pairs of rocker members that extend transversely relative to the chain movement direction. The thrust link band includes a number of thrust links that are in face-to-back contact and that extend transversely relative to the band movement direction. Each of the rocker members and the thrust links have ends that contact surfaces of the conical disks of the transmission for transmitting torque between the sets of disks. The ends of the rocker members and of the thrust links have a carbon-nitrided outer layer having a thickness of at least about 50 &mgr;m for increased durability. The surfaces of the conical disks that are contacted by the chain or the thrust link band can also be similarly treated.
    Type: Grant
    Filed: September 2, 2001
    Date of Patent: November 2, 2004
    Assignees: LuK Lamellen und Kupplungsbau Beteiligungs KG, INA Wälzlager Schaeffler oHG
    Inventors: Markus Baumann, Lothar Moser, Werner Kreiss
  • Publication number: 20040213486
    Abstract: A linear rolling bearing has a guide carriage (1) that is U-shaped in cross-section and has two U-legs (6). The guide carriage (1) is slidably supported through balls (3) on two longitudinal sides of a guide rail (2). Each U-leg (6) comprises on an inner surface opposing the guide rail (2) a ground raceway (10) for the balls (3). The raceway (10) is made by a grinding wheel whose diameter is larger than the diagonal dimension of the carriage cavity (7). According to the invention, a stop surface (12) having a retaining contour for a guide member (4) containing the balls (3) is configured on a guide rail-distal outer surface of each U-leg (6) of the guide carriage (1), and the raceway (10) on one of the two U-legs (6) and the stop surface (12) having the retaining contour on the other of the two U-legs (6) are made in common in one work step by the grinding wheel.
    Type: Application
    Filed: May 18, 2004
    Publication date: October 28, 2004
    Applicant: INA WALZLAGER SCHAEFFLER oHG.
    Inventor: Heinz Greiner
  • Publication number: 20040211312
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Application
    Filed: December 15, 2003
    Publication date: October 28, 2004
    Applicant: INA WALZLAGER SCHAEFFLER oHG
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Patent number: 6808309
    Abstract: A linear rolling bearing has a guide carriage (1) that is U-shaped in cross-section and has two U-legs (6). The guide carriage (1) is slidably supported through balls (3) on two longitudinal sides of a guide rail (2). Each U-leg (6) comprises on an inner surface opposing the guide rail (2) a ground raceway (10) for the balls (3). The raceway (10) is made by a grinding wheel whose diameter is larger than the diagonal dimension of the carriage cavity (7). According to the invention, a stop surface (12) having a retaining contour for a guide member (4) containing the balls (3) is configured on a guide rail-distal outer surface of each U-leg (6) of the guide carriage (1), and the raceway (10) on one of the two U-legs (6) and the stop surface (12) having the retaining contour on the other of the two U-legs (6) are made in common in one work step by the grinding wheel.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: October 26, 2004
    Assignee: Ina Walzlager Schaeffler oHG
    Inventor: Heinz Greiner
  • Patent number: 6752249
    Abstract: An actuating unit for an electromechanically actuated disc brake for automotive vehicles which is composed of a drive unit or an electric motor, an actuating element forming one of two friction linings into engagement with a brake disc, and a reducing gear. A freewheel mechanism that interacts with the electric motor has the function of a parking brake. In order to ensure a high level of reliability in operation of the parking brake and to render it resistant to external influences, in particular, oscillations or vibrations, the present invention suggest that the freewheel mechanism be configured in such a way that its clamping effect is produced by a form-locking torque transmission and that, in its actuated state, it prevents a rotational movement of a bearing in which the rotor of the electric motor is mounted.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: June 22, 2004
    Assignees: Continental Teves AG & Co., oHG, Ina Walzlager Schaeffler oHG
    Inventors: Johann Jungbecker, Stefan Schmitt, Oliver Hoffmann, Joachim Nell, Ernst Neuwirth, Wendelin Backes
  • Publication number: 20040097313
    Abstract: The invention relates to a deflection pulley (1), intended for a traction drive, which includes a rolling-contact bearing as well as a ring body (4). A securing screw (8) as well as a spacer sleeve (9) serve as retaining elements.
    Type: Application
    Filed: June 30, 2003
    Publication date: May 20, 2004
    Applicant: Ina Walzlager Schaeffler OHG
    Inventor: Johann Singer
  • Patent number: 6719460
    Abstract: An arc-shaped rolling bearing segment (14) comprising a cage (16) and rolling elements (15) for a swash plate pivoting bearing of a hydraulic axial piston machine is characterized in that the cage (16) and the support peg (17) are made as a single piece out of a polymer material, and the support peg (17) is surrounded, at least over a part of its axial length, by a metal ring (18).
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: April 13, 2004
    Assignee: INA Walzlager Schaeffler oHG
    Inventors: Klaus Becker, Boris Baumann
  • Patent number: 6701877
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: March 9, 2004
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Patent number: 6682227
    Abstract: A needle case or needle bush produced without cutting for a thin-walled needle bearing is produced without cutting from a cold-rolled strip, which is a heat-treated steel which has the disclosed chemical composition and the disclosed mechanical characteristic values. After a heat treatment, a surface hardness of 860 to 880 HV and a core hardness of 550 to 650 HV are achieved.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: January 27, 2004
    Assignee: Ina Wälzlager Schaeffler oHG
    Inventors: Karl-Ludwig Grell, Günter Grube, Leo Müntnich
  • Patent number: 6659877
    Abstract: In an adjustable-length shaft (1) for transmitting torques comprising a circular inner shaft component (2) that is mounted coaxially through a linear ball bearing for sliding telescopically in axial direction in a hollow outer shaft component (3), the inner shaft component (29 is mounted by two spaced-apart pre-stressed linear ball bearings (4) that are arranged on opposite end sections (6) of the inner shaft component (2) and are received in a reception bore (19) of the outer shaft component (3), a transmission of torque being achieved by a positive engagement of the inner and the outer shaft components (2, 3).
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: December 9, 2003
    Assignee: Ina Walzlager Schaeffler OHG
    Inventors: Thomas Wiesneth, Rudolf Folk
  • Patent number: 6655333
    Abstract: In a valve train of an internal combustion engine having a switchable support element (1), the lost motion spring (18) of the support element (1) is arranged axially offset next to the support element (1) while being coupled to an inner element (3) of the support element (1) by a crossbar (20). Due to this externally positioned spring (18), the support element (1) requires only a relatively small design space.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: December 2, 2003
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Joachim Seitz, Michael Haas, Bodo Rörig, Dicter Schmidt