Patents Assigned to INA Walzlager Schaeffler KG
  • Publication number: 20030161556
    Abstract: In a linear antifriction bearing comprising a guide rail (1) which has a U-shaped cross section and on whose inner side raceways (4) parallel to the rail longitudinal direction are arranged, and comprising a running carriage (2) which can be displaced longitudinally and is supported by rolling elements (3) on the raceways (4) inside the guide rail (1), the rolling elements (3) are arranged in a plurality of endless tracks on a supporting body (5) of the running carriage (2).
    Type: Application
    Filed: January 24, 2003
    Publication date: August 28, 2003
    Applicant: INA-WALZLAGER SCHAEFFLER KG
    Inventor: Horst Friedrich
  • Patent number: 6116787
    Abstract: Two race washers (3 and 4) of a thrust rolling bearing comprise on a peripheral edge two collars (5 and 6) directed towards each other so that an annular gap (7) is formed. The rim (8) of the cage (2) is guided in this annular gap (7).
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: September 12, 2000
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Leo Muntnich, Wolfgang Steinberger
  • Patent number: 5993067
    Abstract: A release bearing (1) for actuating a gearshift clutch of an automotive vehicle comprises an angular contact ball bearing (3) in which forces are transmitted from one bearing raceway to another bearing raceway at an angle of pressure .alpha. to the transverse plane of the angular contact ball bearing (3). To improve the bearing capacity of such a release bearing (1), the angle of pressure .alpha. is configured to be .gtoreq.36.degree. and <45.degree.. Friction between the balls and the raceways of the angular contact ball bearing is reduced by the fact that an osculation K.sub.AU on the outer ring (6) is .gtoreq.1.15 and an osculation K.sub.IR on the inner ring (10) is .gtoreq.1.07.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: November 30, 1999
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Peter Giese, Hartmut Koschmieder, Ralf Bossner
  • Patent number: 5988884
    Abstract: A guide rail arrangement for connecting two relatively displaceable components comprising a lower rail (1) and an upper rail (2) supported thereon by rolling elements (3), said lower and upper rails being configured as rectilinear sheet metal profiles, one of the lower and upper rails partially surrounding the other of the lower and upper rails, whereby hollow spaces are formed for receiving the rolling elements (3) and further slide elements (4) arranged between the rails is characterized in that, in a central region of the arrangement, the two rails (1, 2) define a receiving space (5) for a spring and/or damping element, which receiving space (5) is adjoined by regions comprising the rolling elements and the slide elements (4) and extending in end regions of the rails (1, 2) which results in the creation of an arrangement with uniform load distribution on its components so that a deformation of the components and a pressing-in of the rolling elements is reliably prevented.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: November 23, 1999
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Frank Scheib, Klaus Baalmann, Jorg Gwosdek, Ralf Moseberg, Thomas Winkler, Barbara Fess, Thomas Kurz, Rainer Kleber, Joecbim Ritter, Rolf Fleischhauer
  • Patent number: 5967923
    Abstract: A tensioner for belts and chains having a housing (1) in which a cylinder (3) containing a slidably guided piston (4) is arranged which piston (4) is supported radially by a guide bush (5), one end of a compression spring (13) engaging the piston (4), while the other end thereof engaging a cylinder base (6) of the cylinder (3), which cylinder base (6) is axially supported on a housing bottom (9) by a self-adjusting bearing (10) whereby, to improve the correction of alignment errors between the cylinder (3) and the piston (4), a plurality of peripherally adjacent raised portions (10) made of a ductile material are arranged between the housing bottom (9) and the cylinder base (6) and are plastically deformable under loading by the spring-loaded cylinder base (6).
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: October 19, 1999
    Assignee: INA Walzlager Schaeffler KG
    Inventor: Werner Petri
  • Patent number: 5954020
    Abstract: A cup-shaped tappet (1) for actuating a gas exchange valve (17) of an internal combustion engine, comprising a cylindrical jacket (6) closed at one end by a bottom (7) and guided in a bore (2) of a cylinder head (3), the valve tappet (1) being actuated by a cam (4) of a camshaft (5) acting on the bottom (7) of the tappet (1) characterized in that the bottom (7) and the jacket (6) are steel components having respective wall thicknesses (A),(B) dimensioned so that a product (P.sub.1) of the wall thicknesses, (A).times.(B) expressed in millimeters is <2.3, the wall thickness (A) of the bottom (7) being 1.7 to 2.4 mm and the wall thickness (B) of the jacket (6) being 0.7 to 1.0 mm.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: September 21, 1999
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Dieter Schmidt, Walter Speil, Wolfgang Miereisz, Karl Ludwig Grell, Reinhard Ammon
  • Patent number: 5935009
    Abstract: A tripod constant velocity universal joint comprising a housing (5) having longitudinal grooves (4) arranged in spaced relationship on a periphery thereof, and a tripod spider (2) comprising symmetrically arranged, rotationally symmetrical ball-headed trunnions (3) on which an inner ring (6) comprised of two semi-shells or made as a split ring is retained in a form-fitted manner for angular displacement, said inner ring (6) being radially surrounded by a guide element (7) with rolling elements (10) arranged between the guide element (7) and an outer ring (11) which is guided outwardly for sliding displacement in the longitudinal grooves (4), characterized in that a length of the rolling elements (10) is larger than a width of the outer ring (11), the guide element (7) as seen in longitudinal cross-section is U-shaped and comprises end flanges (8, 9) which extend radially outwards so as to project beyond an inner diameter of the outer ring 11.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: August 10, 1999
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Didier Hosdez, Piotr Olszewski
  • Patent number: 5921577
    Abstract: A clamping device for a steering column (6) which is guided in fixed mounting arms (4, 5) and comprises a tie bolt (7) which is arranged at right angles to the steering column (6), the tie bolt (7) extends between the two mounting arms (4, 5), there being arranged on one end of the tie bolt (7), between a thrust washer (11a) and the mounting arm (4), a clamping washer (12a) comprising clamping ramps (13a) on which rolling elements (14a) are supported while being guided in a retention disc (15a) mounted for rotation on the tie bolt (7), the retention disc (15a) can be rotated by means of a hand lever (19), and, depending on a direction of rotation of the retention disc (15a), the mounting arms (4, 5) effect a clamping or a releasing of the steering column (6), characterized in that the clamping device (1a) comprises a pot-shaped housing (2) which bears against the mounting arm (4) by a bottom (3) and encloses all the clamping means, the housing (2) is closed at one end by a thrust washer (11a), while the clamp
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: July 13, 1999
    Assignees: INA Walzlager Schaeffler KG, Daimler-Benz Aktiengesellschaft
    Inventors: Jurgen Weiss, Wilfried Soyka, Reiner Martin, Alexander Zernickel, Stephan Gaertner, Thomas Kambies, Michael Siemers, Reiner Scheu
  • Patent number: 5896836
    Abstract: A valve control device for an internal combustion piston engine adjusts positions of rotation of a camshaft relative to a crankshaft. This device comprises a hydraulic cylinder (1) comprising a piston (2) and at least one first feed duct (4). Between the cylinder (1) and a hydraulic pump (8), there is disposed a hydraulic valve arrangement (6) by which a hydraulic connection can be established between the first feed duct (4) and a first outlet duct. To assure a reliable prevention of rattling noises during the starting operation, it is proposed that the first outlet duct (10) open into a fluid reservoir (7) below the level of liquid therein.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: April 27, 1999
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Andreas Strauss, Eduard Golovatal-Schmidt, Martin Scheidt
  • Patent number: 5894662
    Abstract: A method for making a trunnion for a rocker arm or a finger lever of an internal combustion engine from a piece of rod-shaped ground stock by removal of a peripheral section to produce a flat bearing surface including forming the round stock into a barrel-shaped blank by upsetting, shaping the barrel-shaped blank into a rotationally symmetrical element including a central shoulder having a uniform diameter which is greater than the diameter of the trunnion and removing the peripheral section at any point from the central shoulder by shearing from two sides thereof in an axial direction of the rotationally symmetrical element whereby any cutting plane material from the central shoulder is directed towards a sheared surface whereby the bearing surface is a hardened surface.
    Type: Grant
    Filed: June 18, 1996
    Date of Patent: April 20, 1999
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Rudolf Bauer, Horst Doppling
  • Patent number: 5890463
    Abstract: The clearance compensation element (5) of a lever (26) is retained axially within a bore (27). An end of the bore (27) comprises a diameter enlargement (29) in which a Belleville-type spring washer (16) with a radially outwards acting retention force is arranged to achieve a positioning of a pressure piston (7) of the clearance compensation element (5).
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: April 6, 1999
    Assignee: INA Walzlager Schaeffler KG
    Inventor: Walter Speil
  • Patent number: 5887688
    Abstract: A synchronizing device (4) comprises a thrust member (10) to initiate synchronization during a gearshifting operation, and the thrust member (10) receives a spherical locking element (12) to lock a sliding sleeve (9) in its neutral position. According to the invention, the thrust member (10) which is made as a one-piece element comprising a foot portion (26) and a head portion (27) receives the locking element (12) and a compression spring (11) in its interior and is displaceable in a T-shaped longitudinal groove (25) of an inner synchronizer ring (5).
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: March 30, 1999
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Volker Ploetz, Wilfried Soyka, Manfred Winkler
  • Patent number: 5885009
    Abstract: A cage (1) for cylindrical rolling elements (5) comprising two side rings (2, 3) connected to each other by circumferentially uniformly spaced crossbars (4) so that receiving pockets (6) are formed for the rolling elements (5) is characterized in that opposing end surfaces (8) of the pockets (6) comprise projections (11) which extend inwards in axial direction and bear against end faces of the rolling elements (5) which prevents an axial offset between the rolling elements (5) and the cage (1) so that after insertion and suspension of the first rolling element (5), the cage (1) can be filled with the rest of the rolling elements (5) without their being damaged.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: March 23, 1999
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Leo Muntnich, Herbert Zettner
  • Patent number: 5879086
    Abstract: An axial rolling bearing with a cage (2) comprising radially directed elastic projections (7, 8) on its inner and/or outer peripheral surface, which elastic projections (7, 8) bear against the collar (6, 5) of the race discs (4, 3) under all operating conditions of the bearing so that the cage (2) is radially centered, even if the shaft lifts off in axial direction.
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: March 9, 1999
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Leo Muntnich, Herbert Zettner
  • Patent number: 5860399
    Abstract: A hydraulic clearance compensation element free of prior art disadvantages and manifesting substantially higher sink values over a wide range of temperatures.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: January 19, 1999
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Walter Speil, Dieter Schmidt
  • Patent number: 5839835
    Abstract: A self-aligning ball bearing for steering shafts (7) of automotive vehicles having an elastic convexity (8) deviating from the circular shape and arranged in at least one peripheral section of at least one of the raceways (2, 4), preferably of the outer raceway (2), so that two adjacent bearing balls (5) are radially prestressed between the raceway convexity (8) and the facing raceway.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: November 24, 1998
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Alexander Zernickel, Herbert Erhardt, Rainer Lutz
  • Patent number: 5829398
    Abstract: A valve timing control device (1) for varying opening and closing times of gas exchange valves of an internal combustion engine, characterized in that, in at least one of the pressure chambers (5, 6), there is arranged at least one spring means (13) whose spring force acts on the adjusting piston (4) to counteract an undesired adjusting direction (delayed opening and closing times t.sub.N+) of the adjusting piston (4) caused by a drag and frictional torque M.sub.S of the camshaft (2) during operation of the internal combustion engine, whereby the drag and frictional torque M.sub.S in a low-speed, low-load range of the internal combustion engine is substantially counteracted by an oppositely directed torque M.sub.F obtained from the spring force of the spring means (13).
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: November 3, 1998
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Andreas Strauss, Eduard Golovatai-Schmidt, Martin Scheidt
  • Patent number: 5823151
    Abstract: In a switchable cam follower (1) comprising an inner element (2) and an outer element (3), with said inner element (2) comprising a hydraulic clearance compensation device (10), a coupling of the two elements (2, 3) is effected by radially extending coupling means (4). These coupling means (4) and the clearance compensation device (10) which is integrated in the inner element (2) are loaded by hydraulic pressure from a cylinder head of an internal combustion engine through separate channels (9, 8). According to the invention, the spring means (5) for the coupling means (4) are configured so that from a hydraulic medium pressure from about 0.6 bars on (idling engine speed), the elements (2, 3) are uncoupled. When a switching engine speed, for example, 3,000 rpm, has been reached, the hydraulic pressure in the channel (9) is reduced to about 0.1 bars by a control valve (11). The coupling means (4) are displaced by the spring means (5) into a coupling position.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: October 20, 1998
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Harald Elendt, Michael Haas, Gerhard Maas
  • Patent number: 5819898
    Abstract: A locking roller overrunning clutch comprising an outer bush (2) having a radial flange (10) at one front end, locking ramps (9) for locking rollers (7) being circumferentially spaced along an inner periphery of the outer bush (2), the overrunning clutch further comprising a cage (3) arranged within the outer bush (2) and having pockets (6) for lodging the locking rollers (7), the pockets (6) being defined by end rings (4) of the cage (3) and by circumferentially spaced crossbars (5) which connect the end rings (4) to each other, at least one of the end rings (4) comprising centering lugs (12) for interlocking with the locking ramps (9), characterized in that the locking ramps (9) extend in axial direction up to an open front end of the outer bush (2) situated away from the radial flange (10), and at least the end ring (4) arranged at the open front end of the outer bush (2) comprises a sealing lip (13) arranged on the end ring (4) on a peripheral surface thereof facing the outer bush (2) and seals a gap form
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: October 13, 1998
    Assignee: INA Walzlager Schaeffler KG
    Inventor: Johann Stark
  • Patent number: 5803813
    Abstract: A tripod type constant velocity universal joint comprising an outer joint member having longitudinal recesses arranged in spaced relationship on a periphery thereof, and trunnions symmetrically arranged on a tripod spider, said trunnions located in said recesses of the outer joint member by tripod rollers mounted on rolling elements, characterized in that an inner ring formed without chip removal from sheet metal is arranged between each trunnion and respective rolling elements, the inner ring, the tripod roller and the rolling elements form a roller assembly, and the inner ring comprises at least first and second radially stepped end flanges which form radially inner stops for the rolling elements and radially outer stops for the tripod roller.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: September 8, 1998
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Didier Hosdez, Pierre Alber