Patents Assigned to INA
  • Patent number: 5727509
    Abstract: The clearance compensation element (5) of a hydraulic tappet (1) is retained axially in cam-remote direction by an axial extension (11) of a guide element (10) which extends radially inwards from the housing (2). The cam-remote end of the axial extension (11) comprises a diameter enlargement (14) 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: May 27, 1997
    Date of Patent: March 17, 1998
    Assignee: Ina Walzlager Schaeffler KG
    Inventor: Walter Speil
  • Patent number: 5727508
    Abstract: A device for the continuous variation of a relative angular position between a crankshaft and a camshaft of an internal combustion engine comprising a drive element (2) driven by the crankshaft of the internal combustion engine through a traction means, a sliding sleeve (7) which is positively locked by a first gearing (8, 9) to the drive element (2) and by a second gearing (10, 11) to a driven element (13), and an adjusting piston (6) which is fixed on the sliding sleeve (7) and guided in a housing (3) to axially delimit two pressure chambers (14, 15) which are sealed from each other by a sealing arrangement whereby a radially inward oriented sealing of the sliding sleeve (7), is achieved by providing a sealing disc (17) of continuous configuration which bears against an inner wall (19) of the sliding sleeve (7).
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: March 17, 1998
    Assignee: Ina Walzlager Schaeffler KG
    Inventor: Dieter Goppelt
  • Patent number: 5727896
    Abstract: A form fitted connection between an angular disc of an axial bearing on a connecting element with the angular disc bearing against an end face of the connecting element with the angular disc comprising at least one retaining lug engaging into an associated recess in an outer peripheral surface of the connecting element.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: March 17, 1998
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Gerald Buer, Michael Beck
  • Patent number: 5727884
    Abstract: In a linear rolling bearing comprising a solid guide rail and a U-shaped carrier body engaging therearound, the carrier body (2) being slidably supported on the guide rail by rolling elements, each deflector comprises a housing and two deflecting shells (10) inserted therein with clearance, on which shells the webs extending into the load-bearing regions for the rolling elements are formed as centering webs (11), and each deflecting shell (10) additionally comprises a projecting, centering collar (12) which extends into a return bore (6) of the carrier body (2).
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: March 17, 1998
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Heinz Greiner, Thomas Winkler, Annette Welsch, Horst Friedrich, Frank Scheib
  • Patent number: 5720244
    Abstract: A support element (1) is designed to be disconnected by a lift movement of a control cam, and includes radially movable coupling elements (12). To disconnect the support element (1), the coupling elements (12) are moved inwards by hydraulic medium, while at the same time a piston (4) communicating with the finger lever is held in cam-distant position by the hydraulic medium.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: February 24, 1998
    Assignee: Ina Walzlager Schaeffler KG
    Inventor: Christof Faria
  • Patent number: 5707153
    Abstract: A bearing unit for linearly moving selector shafts in a toothed-wheel gearbox with rows of beating balls in a cage rolling on the one hand on an inner surface of a sleeve permanently fitted to the gearbox housing and on the other hand on the gear change shaft. The sleeve has a flange at one end by which the sleeve can be secured to a gearbox housing in such a way that it extends freely into the gearbox housing over its entire length.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: January 13, 1998
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Wolfgang Steinberger, Manfred Winkler
  • Patent number: 5706770
    Abstract: A finger lever for a valve drive of an internal combustion engine which finger lever is contacted in a central region by a control cam and cooperates at one end with a gas exchange valve in the opening direction while being pivoted at another end by a bore on a shaft for pivoting relative to a cylinder head of an internal combustion engine by means projecting radially beyond a peripheral surface of a shaft in the region of a surrounding cam follower.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: January 13, 1998
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Dieter Schmidt, Arndt Ihlemann, Bodo Rorig
  • Patent number: 5704319
    Abstract: The invention concerns a hydraulic play-compensation element including a groove (11) in the housing (1) to be located in such a way that, whatever the position of the plunger (2), a length (19) of the plunger is always supported by the cylinder wall above the groove and the securing ring (12) is centered radially around the plunger by means of a recess (14) in the plunger, the recess having a ramp at least at its lower end. The invention thus avoids weakening of the material in the upper part of the plunger.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: January 6, 1998
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Helmut Engelhardt, Dieter Schmidt
  • Patent number: 5704860
    Abstract: The proposed chain tightener is provided with a damping piston (3) in a guide bore (2). A stop ring (8) is provided between the damping piston (3) and the housing (1). The stop ring (8) cooperates with grooves (9, 17, 13) and stops (11, 10, 14) on the housing (1) and on the damping piston (3), preventing the damping piston (3) from sliding too far into the housing (1). To allow the damping piston (3) to be locked in position in the bore (2), it is proposed that the stop ring (8) should be clamped in a locking position between two contact surfaces (12, 16) on the housing (1) and damping piston (3) respectively, the contact surfaces (12, 16) being inclined in relation to the axis of the damping piston.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: January 6, 1998
    Assignee: INA Walzlager Schaeffler KG
    Inventor: Hermann Stief
  • Patent number: 5704458
    Abstract: A freewheel cage (1) arranged between two concentric metal machine components (2,3) and comprising at least one reinforcing ring (14) and a plurality of segments (4) made of an injectable or castable material and arranged on a periphery of the reinforcing ring (14), said segments (4) comprising pockets (7) for locking elements (8) defined between axial crossbars (5) and end sections (6) integral thereto, the locking elements (8) being spring-mounted between facing locking surfaces (9, 10) of the machine components (2,3) while expansion gaps (18) are formed between consecutive segments (4), and at least one sliding surface (20) associated to the freewheel cage (1) is arranged on a periphery thereof for sliding contact with a cylindrical surface (10) of one of the machine components (3), the reinforcing ring (14) is inserted into grooves (15) of the segments (4), and the segments (4) and the reinforcing ring (14) respectively comprise recesses (16) and projections (17) which engage positively with one another,
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: January 6, 1998
    Assignee: INA Walzlager Schaeffler KG
    Inventors: Ernst Neuwirth, Harald Hochmuth
  • Patent number: 5702314
    Abstract: The invention concerns a tensioner for traction drives which includes a base element and a tension roller support arranged partly concentric with each other, and further including a torsion spring which is guided on a bush and braces these two elements against each other. According to the invention, a tension bush (20) which includes a longitudinal slot (21) is inserted between the bush (6) and the inner diameter of the torsion spring (13) so as to bear against the inner periphery of the torsion spring (13).
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: December 30, 1997
    Assignee: Ina Walzlager Schaeffler KG
    Inventor: Michael Schmid
  • Patent number: 5678934
    Abstract: In a bearing housing (1) for a form-fitted reception of an outer bearing ring (3) of a rolling bearing comprising a protective cap (7) for closing the bearing housing (1) at one end, the jacket of the protective cap (7) exhibiting at least two outward projecting, spaced retaining projections (10, 11) which retain the protective cap (7) in the bearing housing (1) and which can be introduced axially into end inserting pockets (5) of the bearing housing (1), characterized in that the bearing housing (1) is provided with a circumferential annular groove (6) for receiving the retaining projections (10, 11) when the protective cap (7) is turned, which annular groove (6) communicates with the inserting pockets (5) in the circumferential direction of the bearing ring (3) which configuration guarantees a secure fixing of the protective cap (7) in the bearing housing (1).
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: October 21, 1997
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Arnold Fischer, Erich Krober
  • Patent number: 5672011
    Abstract: The invention concerns a rolling bearing for linear movements comprising a carrier which is displaceable along a guide rail and supported on two longitudinal sides of the guide rail on several pairs of rolling element circuits, a one-piece cage being associated with each longitudinal side and each rolling element circuit being comprised of a rectilinear row of load-transmitting rolling elements guided by the cage, a row of returning rolling elements arranged in a return passage in the carrier and two rolling element deflector arches connecting the two said rows at ends thereof, a part of each deflector arch being arranged in the one-piece cage as a continuation of the rectilinear row of rolling elements while another part of the deflector arch is arranged in a head piece disposed on an adjacent end face of the carrier.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: September 30, 1997
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Jean Marie Eder, Friedrich Holweg, Heinz Greiner
  • Patent number: 5670265
    Abstract: A steel component is provided on its surface with an electroplated anti-corrosive coating of a metallic material and has a hardness of at least 650 HV, the anti-corrosive coating being thinner than the surface roughness which the hardened component had before the application of the protective coating. Advantageously, the component is a rolling bearing component with a surface roughness R.sub.z of 0.3 to 9.0 .mu.m and a coating thickness of 0.1 to 3.0 .mu.m. Preferably, the anti-corrosive coating comprises a zinc-cobalt alloy, a zinc-iron alloy or a zinc-nickel alloy coating. It is possible to add iron, tin, copper or chromium to the coating composition.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: September 23, 1997
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Karl Ludwig Grell, Reiner Woltmann
  • Patent number: 5669342
    Abstract: A device (1) for simultaneous actuation of at least two gas exchange valves (2) of an internal combustion engine comprising a bridge-type cam follower (3) arranged in driving relationship between a camshaft and the gas exchange valves (2) and serving to directly transmit a stroke motion caused by a control cam (4) of the camshaft to the gas exchange valves (2), said cam follower (3) being guided by guiding means (18,19) for vertical displacement in a cylinder head and comprising a cam contacting element (31) on which the control cam (4) runs, characterized in that the cam contacting element (31) in the cam follower (3) is displaceable relative to the cam follower (3) so that the cam follower (3) can be uncoupled from a stroke-transmitting motion of the control cam (4).
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: September 23, 1997
    Assignee: INA Walzlager Schaeffler KG
    Inventor: Walter Speil
  • Patent number: 5664530
    Abstract: A tappet (1) for a valve drive of an internal combustion engine, which tappet (1) is guided for axial displacement in a reception bore of a cylinder head by a skirt (3) and is closed by a bottom (4) at a cam-proximate end, the skirt (3) comprising a first bush-like section (6) and a second bush-like section (7) of approximately equal diameter separated from each other preferably in a region of a central transverse plane, the first section (6) being connected to the bottom (4), while the second section (7) proceeds longitudinally from the first section (6), characterized in that the hardened first bush-like section (6) is connected to the unhardened second bush-like section (7) by interlocking and a method and apparatus for its preparation.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: September 9, 1997
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Reinhard Ammon, Wilfried Huber
  • Patent number: 5655487
    Abstract: A switchable support element for a lever valve drive of an internal combustion engine comprising a hollow cylindrical housing arranged with an outer peripheral surface in a reception bore of a cylinder head, an inner element supported on the housing by a compression spring being arranged for axial displacement within the housing, while one front end of the housing or of the inner element bears at least indirectly against a finger lever and a second front end bears against he cylinder head.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: August 12, 1997
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Gerhard Maas, Michael Haas
  • Patent number: 5651335
    Abstract: A two-part tappet is designed to be adaptable to different cam contours. Radial bores (11, 12) are provided in the base sections (2, 3) for receiving at least one radially shiftable piston (13) for coupling the sections (2, 3).
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: July 29, 1997
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Harald Elendt, Gerald Fischer, Gerhard Maas, Christof Faria, Michael Haas, Hermann Wiehl
  • Patent number: 5647675
    Abstract: An angular thrust disc has a Z-shaped cross sectional profile, a free end of whose radially outer angular portion comprises radially inward directed projections arranged axially spaced from a free end thereof and made by chipless stamping, which projections engage into a peripheral groove of a shaft or a housing, and a free end of a radially inner angular portion of the angular thrust disc comprises circumferentially spaced and radially outward directed crimpings and recesses which form an installation safeguard and permit an admission of oil into the thrust bearing.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: July 15, 1997
    Assignee: Ina Walzlager Schaeffler KG
    Inventors: Norbert Metten, Heinz Pfann
  • Patent number: 5642988
    Abstract: A radial piston pump (1), preferably for pressure medium supply of an anti-lock system of vehicle brakes, with a rotating pump shaft (3), an end section of which has a pivot (5) extending eccentrically to a longitudinal center axis of the pump shaft (3), there being arranged on the pivot (5) a rolling bearing on whose outer ring (9) are supported by their plane end faces (13) pump plungers (12) in star arrangement in a pump housing (2) and extending radially to the pump shaft (3), characterized in that the rolling bearing is designed as a needle bearing (6) with the needle elements rolling directly against the shaft pivot (5), the outer ring (9) being produced as a deep-drawn sheet metal ring with chiplessly formed edges (10,11) on both sides, in which needle-shaped rolling elements (7) are guided via a cage (8) and in which the outer ring (9) is made with a core hardness of at least 300 HV1.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: July 1, 1997
    Assignee: INA Walzlager Schaeffler KG
    Inventor: Helmut Zorn