Patents Assigned to INA
  • Patent number: 6375360
    Abstract: An angular contact ball bearing of a steering shaft (27) of an automotive vehicle, said bearing comprising an inner bearing ring (11), an outer bearing ring (1) and bearing balls (7) arranged between the inner and outer bearing rings in rolling contact with raceways (14, 5) formed on the inner and outer bearing rings, the inner bearing ring (11) being received by an elastic tolerance ring (15) of a polymeric material, said bearing further comprising an inseparable assembly, wherein, a retaining ring (20) is arranged between the steering shaft (27) and the tolerance ring (15), the retaining ring (20) comprises circumferentially equi-spaced retaining elements (19) that project therefrom in axial direction and comprise radially outward directed retaining lugs (22) that overlap the outer bearing ring (1), the tolerance ring (15) comprises circumferentially equi-spaced clearances (18) for receiving the retaining elements (19), and the tolerance ring (15) extends in axial direction up to the end of a generally radi
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: April 23, 2002
    Assignee: INA
    Inventors: Ulrike Weisskopf, Rainer Lutz
  • Patent number: 6374692
    Abstract: A shift device for a change-speed gearbox, includes a shift rocker having sidewalls for axially displacing a shift sleeve positively connected to a gear wheel clutch or synchronizing unit. A shift finger is fixedly mounted on a shift shaft and positively engages a shift slot of the shift rocker to operate the shift rocker. The shift rocker is of single-piece configuration and made through a non-cutting process, with a blank being pre-punched from a steel sheet, before the blank is shaped into a finished product by at least one bending operation.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: April 23, 2002
    Assignee: Ina Wälzlager Schaeffler oHG
    Inventors: Wolfgang Steinberger, Klaus Krämer, Arnold Trissler
  • Patent number: 6374785
    Abstract: This invention pertains to a vane-cell positioning device with an external rotor (1) driven by the crankshaft of an internal combustion engine and an internal rotor (2) fixed to and turning with a camshaft which has pivoting vanes (15) that fit inside vane mounting notches (16), said vanes being loaded with pressurized oil in hydraulic work spaces (31) of the external rotor (1). The danger of the pivoting vanes (15) lifting off of the radial sealing surfaces is eliminated by loading the bottoms of the pivoting vanes (15) with pressurized oil as the internal combustion engine is running.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: April 23, 2002
    Assignee: Ina Walzlager Schaeffler OHG
    Inventors: Jens Schäfer, Martin Steigerwald, Matthias Kapp
  • Patent number: 6370976
    Abstract: A gear shifting drum (2) for a gear shifting device of variable-speed gearboxes for motor vehicles has a curved path (11a to 11c) for guiding an engagement member (13) of the gearshift fork (12a to 12c), wherein the gearshift fork (12a to 12c) is directly connected to a synchronization device. According to the invention, at least one radially outwardly directed wall (9, 10) is arranged on the outer surface area (8) of the gear shifting drum (2) for formation of the curved path (11a to 11c).
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: April 16, 2002
    Assignee: Ina Wälzlager Schaeffler OHG
    Inventors: Horst Döppling, Wolgang Steinberger, Manfred Winkler
  • Patent number: 6367983
    Abstract: The invention relates to a window cage (1) for a needle bearing. The pockets (5) of said window cage are formed by punched out sections and by a stamping process with material displacement in a cage strip (9) which is then bent round. According to the invention, the window cage (1) is characterized in that before the cage strip (9) is bent, the opposite surfaces of the web walls of a pocket (5) are made up of three sub-surfaces (10, 11, 12) in the area of the retaining projections (7, 8). The first two sub-surfaces (10) follow a course which is parallel to a middle vertical (13) and each extend into a second sub-surface (11) at their upper end, said second sub-surface running diagonally in the direction of the central point of the pocket. Each of the second sub-surfaces then ends in a third sub-surface (12) which also runs parallel to the middle vertical (13).
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: April 9, 2002
    Assignee: Ina Walzlager Schaeffler OHG
    Inventors: Leo Muntnich, Wolfgang Fugel
  • Patent number: 6367434
    Abstract: The Invention concerns g solenoid valve, more particularly a proportional hydraulic valve which is arranged within a hydraulic system of a device for varying the valve timing of gas exchange valves in an internal combustion engine. The solenoid valve (1) generally comprises an electromagnet (2) having a hollow cylindrical magnet housing (3), at least one coil winding (4) and an armature (5) as Well as a first pole shoe (6) and a second pole shoe (7) and further comprises a valve member (8) having a hollow cylindrical valve housing (9) for receiving a spool valve which is displaceable relative to the valve housing (9) by the armature (5) of the electromagnet (2). According to the invention, the electromagnet (2) and the valve member (8) are connected and fixed radially and axially to each other by force locking and/or positive engagement by the second pole shoe (7) of the electromagnet (2) which is arranged adjacent the valve member (8) and configured as a plug-in lock for the valve housing (9).
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: April 9, 2002
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Martin Steigerwald, Jens Schäfer, Matthias Dohr
  • Patent number: 6367438
    Abstract: The invention concerns a rotary piston adjuster (1, 1′) for hydraulic phase adjustment of a camshaft of an internal combustion engine relative to a drive pinion (6), said adjuster comprising a rotor (3, 3′) fixed to the camshaft and cooperating with the drive pinion (6) for effecting phase adjustment.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: April 9, 2002
    Assignee: Ina Walzlager Schaeffler oHG
    Inventor: Dieter Neller
  • Patent number: 6367346
    Abstract: A gearshift fork (2, 3) for a manual transmission of an automotive vehicle is fixed on a selector rod and engages with its bifurcated section into a peripheral groove of a sliding sleeve. The bifurcated section (6) extends transversely of the central longitudinal axis of the selector rod and comprises a stiffening. To create an economic configuration of the gearshift fork (2, 3) and enable a production in large series, the gearshift fork is manufactured as a complete component by shaping without chip removal.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: April 9, 2002
    Assignee: INA Walzlager Schaeffler oHG
    Inventors: Wolfgang Steinberger, Klaus Kramer, Arnold Trissler
  • Patent number: 6363897
    Abstract: A hydraulic camshaft-adjusting device of the rotary piston type having a drive gear (2) and an impeller. The drive gear (2) has a cavity formed from a perimeter wall and two side walls (5, 6) inside of which at least one hydraulic working chamber is formed from at least two boundary walls (8). The impeller has a wheel hub (10) with at least one vane that extends into a working chamber, dividing the chamber into two associated hydraulic pressure chambers. The pressure medium feed to and from the pressure chambers is done using a pressure medium tap (16) on the side facing a camshaft as well as using pressure medium channels (17) incorporated into the axial sides (14, 15) of the wheel hub (10) of the impeller, which are connected to the pressure medium tap through a pressure medium distributor (20). The pressure medium tap (16) and the pressure medium distributor (20) are encircled at the head (19) and the outer surface (21) by a respective penetration (22, 23) in the side walls (5, 6) of the drive gear (2).
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: April 2, 2002
    Assignee: INA Walzlager Schaeffler oHG
    Inventors: Martin Scheidt, Jens Schafer, Matthias Kapp, Martin Steigerwald
  • Publication number: 20020035977
    Abstract: An engageable cam follower (1) for acting on a pushrod in the valve train of an internal combustion engine is provided. This cam follower (1) includes of a thin-walled hollow cylindrical housing (2) in whose borehole (3) is positioned an internal element (4) axially movable with respect to the housing (2). The housing (2) and the internal element (4) each possess a radial borehole (13, 10) aligned in a relative position to each other. Positioned in the radial borehole (10) of the internal element (4) is a piston (11) having a convex end (14) and movable toward the radial borehole (13) of the housing (2) for coupling the internal element (4) with the housing (2) in the relative position. According to the invention, the borehole (3) ofthe housing (2) is shaped in the area ofthe radial borehole (13) of the housing (2) as a flattening (15) extending in the longitudinal direction of the cam follower (1).
    Type: Application
    Filed: October 26, 2001
    Publication date: March 28, 2002
    Applicant: INA Walzlager Schaeffler oHG
    Inventor: Mario Kuhl
  • Patent number: 6357921
    Abstract: A radial-axial bearing assembly made up of a radial cylinder roller bearing (1) and a thrust cylinder roller bearing (2) characterized in that a radially inwards directed flange (10) of an outer ring (3) of the radial cylinder roller bearing (1) is arranged between the radial cylinder roller bearing (1) and the thrust cylinder roller bearing (2) and thus defines a first raceway (19) for the thrust cylinder roller bearing (2), a first bearing washer (16) is arranged between two cylinder roller crown rings (12, 13) of the thrust cylinder rcller bearing (2) and defines a second and a third raceway (20, 21) for the thrust cylinder roller bearing (2) while a second bearing washer (17) defines a fourth raceway (22) therefor, said second bearing washer (17) being connected to the outer ring (3) of the radial cylinder roller bearing (1) by fixing screws (18) whereby a self-retaining combined radial-axial bearing is formed whose pre-stress can be adjusted by the manufacturer through the axial dimension of the first be
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: March 19, 2002
    Assignee: Ina Walzlager Schaeffler oHG
    Inventor: Thomas Dittenhofer
  • Patent number: 6357336
    Abstract: An oscillating bearing arrangement, for axial piston pumps (1) of a wobble plate type, comprises a shaft (6) connected for rotation about its longitudinal axis (13) to a wobble plate, the shaft (6) being coupled with a shaft bearing (3) arranged in a housing (4) and comprises an inner ring (15) and an outer ring (16), and oscillating driven elements (14) being spring-suspended against the wobble plate characterized in that the wobble plate (23) which is substantially trapezoidal-shaped in longitudinal section is arranged concentrically in a reception bore of the inner ring (15) of the shaft (3).
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: March 19, 2002
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Raphael Wittmann, Joseph Christophel, Jean Louis Hoden
  • Patent number: 6357754
    Abstract: The sealing arrangement for a bearing bushing includes a reinforced seal (2) which is arranged in force-fitting manner against the inner wall (4) of the bearing bushing (1). The reinforcement (3) of the seal (2) forms a radially inwardly directed arm (14) for attachment of a rotary shaft seal (8) which is disposed between the arm (14) and the rolling bodies (7). The seal (2) is further provided with a sealing lip (15) which faces away from the rotary shaft seal (8) and is supported by a sealing element (5). The sealing element (5) assumes the function of a protective cap and of anterior seal and includes a reinforcement ring (16) having an arm (17) circumscribing an end zone (19) of the bearing bushing (1). A radially inwardly directed flange (18) of the reinforcement ring (16) is rubberized on an end face. The rubber packing (22) further circumscribes the free end of the flange (18) and is secured in fixed rotative engagement to the pin (6).
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: March 19, 2002
    Assignee: INA Wälzlager Schaeffler Ohg
    Inventors: Guido Rieder, Siegfried Götz, Manfred Würch, Martin Kruppa
  • Patent number: 6350203
    Abstract: A torque-transmitting linear rolling bearing (16) comprises ball circuits (24) which are formed in a cage (18) between an inner profiled element (17) and an outer profiled element (19), and rolling elements (22) travelling through a first guide track (24a) are elastically biased by a spring sheet (23).
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: February 26, 2002
    Assignee: Ina Walzlager Schaeffler oHG
    Inventor: Alexander Zernickel
  • Patent number: 6345596
    Abstract: An engageable cam follower (1) for acting on a pushrod in the valve train of an internal combustion engine is provided. This cam follower (1) includes of a thin-walled hollow cylindrical housing (2) in whose borehole (3) is positioned an internal element (4) axially movable with respect to the housing (2). The housing (2) and the internal element (4) each possess a radial borehole (13, 10) aligned in a relative position to each other. Positioned in the radial borehole (10) of the internal element (4) is a piston (11) having a convex end (14) and movable toward the radial borehole (13) of the housing (2) for coupling the internal element (4) with the housing (2) in the relative position. According to the invention, the borehole (3) of the housing (2) is shaped in the area of the radial borehole (13) of the housing (2) as a flattening (15) extending in the longitudinal direction of the cam follower (1).
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: February 12, 2002
    Assignee: Ina Walzlager Schaeffler OHG
    Inventor: Mario Kuhl
  • Publication number: 20020014543
    Abstract: A simply constructed and easy-to-produce nozzle valve (1) for oil spraying of pistons in internal combustion engines is provided. The nozzle valve (1) is formed from a thin-walled sheet-metal housing (2), a nozzle (12), a valve body (8), and spring means (10) for the valve body (8). The spring means (10) act at one end directly against the valve body (8) and rest at their other end against a support (11) extending within the housing (2). This support (11) forms a single structural unit together with the nozzle (12).
    Type: Application
    Filed: October 4, 2001
    Publication date: February 7, 2002
    Applicant: INA Walzlager Schaeffler oHG
    Inventor: Friedrich Ness
  • Patent number: 6341587
    Abstract: The invention proposes a lever-type cam follower (1) which, for mounting a pin (7) for a cam roller, comprises bores (5, 6) in the region of its side walls (2, 3). The diameter of the bore (5) is larger than the diameter of the bore (6). Corresponding ends (8, 9) of the pin (7) are configured so that when mounted, the pin (7) is fixed in the bores (5, 6) by a press fit. Thus, the pin (7) can be inserted with its second end (8) at first through the larger bore (5) without causing damage to its raceway (8a) during assembly. At the same time, the press fit guarantees an excellent fixture of the pin (7) in the cam follower (1) with an all-round contact.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: January 29, 2002
    Assignee: INA Walzlager Schaeffler oHG
    Inventors: Walter Speil, Arndt Ihlemann, Martin Jakel
  • Patent number: 6336882
    Abstract: A chainwheel (1) of a control mechanism of an internal combustion engine, said chainwheel being formed in one part or a plurality of parts from at least one hub (1a), a toothed rim (1c) and a wall (1a) connecting the hub (1a) to the toothed rim (1c), provided with at least one means for the damping of vibrations and noises which consists of a noise-damping material.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: January 8, 2002
    Assignee: INA Walzlager Schaeffler oHG
    Inventors: Thomas Ullein, Bolko Schuseil
  • Patent number: 6336329
    Abstract: A hydraulic master cylinder for a clutch or brake of a motor vehicle is simultaneously optimized for cost-effective mass production and for functional properties.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: January 8, 2002
    Assignee: Ina Walzlager Schaffler oHG
    Inventors: Dieter Adler, Gerhard Prosch, Sigurd Wilhelm, Wilfried Eckert
  • Patent number: 6336528
    Abstract: A brake device for a linear guide comprising a carrier body (1) which is movable on a guide rail (2) and incorporates brake shoes (10) which act on the guide rail (2), and a brake piston (8) which is arranged for displacement by a pressure medium in a brake cylinder (9) of the carrier body (1), the brake device further comprising an energy reservoir in form of a compression spring (11) which acts on the pressure medium that is limited by the brake piston (8), a piston/cylinder assembly is arranged between the compression spring (11) and the brake piston (8), which assembly comprises a unitary control element comprising a displaceable, larger diameter control piston (5) arranged in a control pressure chamber (4) to act on the compression spring (11) and a displaceable, smaller diameter high pressure piston (6) arranged in a high pressure chamber (3) to act on the brake piston (8), a pressure connection (13) for supply of pressure medium into the control pressure chamber (4) being disposed on the carrier body (
    Type: Grant
    Filed: January 17, 2000
    Date of Patent: January 8, 2002
    Assignee: Ina Walzlager Schaeffler oHG
    Inventor: Dietmar Rudy