Patents Assigned to INA-Schaeffler
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Patent number: 7263908Abstract: Ball screw, between the spindle nut (1) and threaded spindle (2) of which at least one ball chain (6, 8) formed from balls (9) rolls in each case along a ball channel (5) which is delimited by ball grooves (3, 4) formed on the spindle nut (1) and on the threaded spindle (2), the ball chain (6, 8) being deflected from one end of the ball channel (5) to a start of this ball channel (5) in deflection portions of the ball channel (5), one or more spring elements (11, 17, 27, 35) arranged in the ball chain (6, 8) between balls (9) of the ball chain (6, 8) exerting a pressure force on the balls (9) in the axis of the ball chain (6, 8).Type: GrantFiled: June 16, 2005Date of Patent: September 4, 2007Assignee: Ina-Schaeffler KGInventors: Jurgen Osterlanger, Ralf Mayer, Horst Munck
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Patent number: 7261075Abstract: The invention relates to a hydraulic support element (1) for a valve gear for an internal combustion engine. Said element consists of a cylindrical hollow case (2) in whose bore hole (3) a pressure piston (4) made of a glass or carbon fibre reinforced plastic is arranged.Type: GrantFiled: June 3, 2004Date of Patent: August 28, 2007Assignee: Ina Schaeffler-KGInventor: Georg Hofmann
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Patent number: 7246586Abstract: The present invention relates to a process for producing a wear-resistant coating and to a wear-resistant coating on predetermined surfaces of machine or engine parts, in particular for internal combustion engines, which are exposed to frictional wear, comprising at least one nanocrystalline functional layer (4) made up of at least two CrNx phases for reducing friction and increasing the wear resistance of the predetermined surface (2) of the machine or engine part (1).Type: GrantFiled: September 7, 2005Date of Patent: July 24, 2007Assignee: INA - Schaeffler KGInventors: Tim Matthias Hosenfeldt, Karl-Ludwig Grell
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Patent number: 7226377Abstract: A tensioner for a traction member, in particular a belt of a traction drive for an internal combustion engine, includes a base constructed for rotation about a rotation axis and having a pivot arm. The pivot arm has a free end for connection of a rotatable tension roller which bears against a traction member. A spring member urges the pivot arm to seek a forced engagement of the tension roller upon the traction member. Disposed between the base and the pivot arm is a damping element for damping an adjusting movement of the pivot arm. A pivot bearing supporting one portion of the base on a machine part for rotation about the rotation axis, whereby the rotation of the base in relation to the machine part is realized by an actuator to thereby adjust a biasing force of the traction member.Type: GrantFiled: March 22, 2004Date of Patent: June 5, 2007Assignee: INA-Schaeffler KGInventors: Manfred Kraus, Michael Bogner
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Patent number: 7222597Abstract: A hydraulic device for adjusting the rotation angle of a camshaft relative to a crankshaft in an internal combustion engine. The device has a rotor, with blades arranged around its periphery. A stator is connected in a rotationally secure manner to a drive wheel. The rotor and the stator together form pressure chambers, which can be filled with hydraulic fluid via a hydraulic fluid system, in which there is disposed a volume accumulator.Type: GrantFiled: June 14, 2005Date of Patent: May 29, 2007Assignee: INA-Schaeffler KGInventors: Jochen Auchter, Andreas Strauss, Lutz Witthöft, Michael Busse, Dirk Heintzen, Jürgen Plate
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Patent number: 7219639Abstract: Disclosed is a drag lever (1) comprising two side walls (2, 3) which are connected together by a transversal bar (4) which is arranged on an end (6) of the lower side (5) thereof on an end (6) thereof on a head of a support element (9) by means of a dome-shaped cavity (7) on a head (8) of a support element (9). A clamp (10) is applied to the end (6) thereof. The clamp fixes the drag lever (1) to the head such that it can be displaced in a pivoting direction thereof. The clamp (10) is made of thin-walled wire material and extends essentially in a transversal manner in relation to the longitudinal axis of the drag lever (1) and is arranged on the lower side (5) of the transversal bar (4) by means of a central section (11) which is formed by webs (12, 13) which extended in a semi-circular manner in a part of the support element (9) which has a reduced diameter (14) and is located below said head (8).Type: GrantFiled: October 14, 2003Date of Patent: May 22, 2007Assignee: INA-Schaeffler KGInventors: Helmut Engelhardt, Johann Kecker, Jörg Michel
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Patent number: 7220196Abstract: In a chain drive for an internal combustion engine, said chain drive comprising a driving wheel (2), a driven wheel (3), an endlessly circulating chain (1) that connects the driving wheel (2) and the driven wheel (3), a chain tensioner (9) acting on the slack strand (7) of the chain (1), and an additional tensioning device (12) that is loaded by a spring (13) and acts on the tight strand (6) of the chain (1) while being arranged for pivoting, a further driven wheel (4) is installed in the tight strand (6) of the chain drive and is used as a driving wheel for a rotatably mounted compensating shaft for offsetting free forces and moments that occur during operation of the internal combustion engine.Type: GrantFiled: December 5, 2002Date of Patent: May 22, 2007Assignee: INA-Schaeffler KGInventors: Thomas Ullein, Bolko Schuseil, Jeff Hewitt
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Publication number: 20070101956Abstract: A device and a method for determining an angle of rotation between a camshaft (5) and a crankshaft of an internal combustion engine is provided, the device including a camshaft regulator provided with an electronic regulator, and a device for determining the position of the angle of rotation of the camshaft and the crankshaft.Type: ApplicationFiled: June 8, 2004Publication date: May 10, 2007Applicant: INA-Schaeffler KGInventors: Jens Schafer, Martin Steigerwald
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Publication number: 20070096459Abstract: A rotating passage feed system for admitting pressure means into two machine parts (hub part (2), shaft (3)) which rotate relative to one another about a common axis is provided. Conduits (17) that convey the pressure means are located in the shaft (3) and are joined to pressure means connections (6) via tapped holes while a connecting part (5) in which ring channels (8) are provided is also joined thereto. A central sleeve (9) is joined to the connecting part (5) in a non-rotatable manner. The connecting part (5) and the central sleeve (9) are produced in an inexpensive manner as lightweight structure formed from sheet metal through a shaping process.Type: ApplicationFiled: May 14, 2004Publication date: May 3, 2007Applicant: INA-Schaeffler KGInventors: Umberto Rocca, Norbert Metten
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Patent number: 7210369Abstract: In a ball screw drive comprising a spindle nut (2) that can be disposed on a spindle (1), said spindle nut (2) comprising on an inner periphery, a ball groove (3) that is arranged along a helix and defines a load-bearing channel (6) for balls (5), an external deflector (7) comprising a return channel (8) for the balls (5) being arranged on an outer periphery of the spindle nut (2), said external deflector (7) comprising two ball openings (E1, E2), each of which is connected to an end of the load-bearing channel (6) to deflect the balls (5) from one end of the load-bearing channel (6) to the other end of the load-bearing channel (6), the external deflector (7) extends from one of the two ball openings (E1) to the other of the two ball openings (E2) at least approximately over one full winding about an axis of rotation of the spindle nut (2).Type: GrantFiled: May 5, 2005Date of Patent: May 1, 2007Assignee: INA-Schaeffler KGInventors: Gunter Hartig, Jurgen Osterlanger, Dieter Adler, Manfred Kraus, Ralf Mayer
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Patent number: 7210854Abstract: A cage for cylindrical rolling-contact elements, in which two rolling-contact elements that are in contact with one another at their lateral surfaces are arranged in series in the circumferential direction in a pocket and in which each of the two rolling-contact elements is guided parallel to a cage axis, includes a web connecting adjoining side rings to one another, there being stub-shaped webs on the side rings in the center of the pockets, between the two rolling-contact elements, the webs projecting partially into the pocket between the rolling-contact elements. The webs comprise sections that extend parallel to the cage axis, lie partially inside and partially outside the pitch circle and are connected to one another by sections that extend obliquely to the cage axis. The stub-shaped webs have no contact with the rolling-contact elements during rotation of the cage.Type: GrantFiled: July 2, 2003Date of Patent: May 1, 2007Assignee: Ina-Schaeffler KGInventors: Marion J. Ince, Roger L. Ebaugh
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Patent number: 7210439Abstract: The invention proposes a switching element (1) for a valve train of an internal combustion engine, particularly for valve deactivation, with a simple-to-implement measure for adjusting the coupling lash of its coupling means (8) in a receptacle (6) using two retaining rings (19, 20), one of which is stocked in a variety of thicknesses.Type: GrantFiled: May 2, 2006Date of Patent: May 1, 2007Assignee: INA-Schaeffler KGInventors: Norbert Geyer, Peter Sailer, Oliver Schnell
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Patent number: 7210437Abstract: The invention proposes a periodically actuable tappet (1) for a valve train, said tappet (1) comprising a hollow cylindrical skirt (2) that can be arranged through an outer peripheral surface (3) in a guide bore (4) of a surrounding structure (5), said skirt (2) comprising a window-type aperture (6) in which a separate anti-rotation device (8) is arranged through a radially inner portion (7), a radially outer portion (9) of the anti-rotation device (8) extending beyond the skirt (2) for guidance in a longitudinal groove (10) that intersects the guide bore (4), wherein the anti-rotation device (8), as viewed in cross-section, is substantially mushroom-shaped, the inner portion (7) has a rectangular cross-section corresponding to a geometry of the aperture (6) of the skirt (2), into which cross-section, the outer portion (9) merges in the manner of a roof through a fractional cylindrical outer peripheral surface (11), inner legs (12) of the outer portion (9) extend beyond the aperture (6) in peripheral directioType: GrantFiled: July 15, 2005Date of Patent: May 1, 2007Assignee: INA-Schaeffler KGInventor: Norbert Geyer
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Patent number: 7207303Abstract: A switch element (1) is proposed for valve shut-off, fabricated as cam follower for a plunger rod valve drive of an internal combustion engine, having an outer part (2) and an inner element (4) axially movable in its bore (3) and with rotational security (15) relative to the guided inner element (4). The outer part (2), inside the bore (3), has an annular groove (6), and the inner element (4) has a radial bore (7) with two diametrically opposed pistons (8), which to couple the elements (2, 4) in their axially remote relative position achieved by a lost-motion spring (5) are displaceable towards the annular groove (6). On their cam-side under side, emanating from their radially outward, bulbous face, the pistons (8) segmentwise comprise a plane transverse surface as contact area for a facing under side (27) of the annular groove (6). The latter is intersected by two diametrically opposed oil ports (11) running offset 90° from the pistons (8) in circumferential direction.Type: GrantFiled: April 13, 2006Date of Patent: April 24, 2007Assignee: Ina-Schaeffler KGInventors: Norbert Geyer, Peter Sailer, Oliver Schnell
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Patent number: 7204773Abstract: A tensioning device for a chain drive of an internal combustion engine, having a support member (1) which is pivotally mounted thereupon and is axially snapped onto and retained on a bearing journal (4) of the support member (1) via a bearing lug (5). The support member (1) is formed as a deep-drawn sheet metal component and is formed in a single piece with the bearing journal (4). The bearing journal (4) is provided with a cup-shaped hollow form. The tensioning rail (2) is axially secured to the support member (1) by a wrap-around (12).Type: GrantFiled: May 10, 2005Date of Patent: April 17, 2007Assignee: INA-Schaeffler KGInventor: Thomas Ullein
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Patent number: 7189183Abstract: Stop disks (9, 12) that on both sides delimit planet wheels (6) and that are provided on at least two evenly spaced-apart peripheral positions with inner axial passages (9.2, 12.2) that are linked with their respective location bores (9.1, 12.2) via respective constrictions (9.2.1, 12.2.1) and between the inner axial passages (9.2, 12.2), outer axial passages 99.3, 12.3) are disposed off-set outward in the radial direction, and the inner axial passages (9.2, 12.2), when looked at in the radial direction, are disposed in the area of the rolling bodies (11.1) and the outer axial passages (0.3, 12.3) cover at least a part of the front of the planet wheels (6).Type: GrantFiled: December 18, 2002Date of Patent: March 13, 2007Assignee: INA Schaeffler KGInventors: Wolfgang Fugel, Alexander Reimchen
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Patent number: 7188596Abstract: A vane-type camshaft adjuster having a stator, and a rotor connectable to a camshaft. The rotor has a plurality of radially protruding blades inserted in respective blade grooves. The blade groove has groove side faces, a groove bottom and rounded transition regions between the groove side faces and the groove bottom. The transition regions undercut the groove side faces, wherein the rounded transition regions are configured, at least in part, as circular arc segments which undercut the groove bottom.Type: GrantFiled: June 7, 2005Date of Patent: March 13, 2007Assignee: Ina-Schaeffler KGInventors: Mike Kohrs, Hermann Golbach
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Patent number: 7185620Abstract: A cam follower of a valve drive of an internal combustion engine, having a run-on surface for following at least one cam. The run-on surface has a microstructure comprising depressions for accumulating lubricant, wherein the depressions form an at least largely symmetrical microstructure similar to a grid. Two depressions of each enclosed section of the run-on surface running toward each other in the manner of an arrow to form a corner such that they point at least in the predominant direction of a movement of a contact point of a cam on the run-on surface.Type: GrantFiled: April 25, 2005Date of Patent: March 6, 2007Assignee: Ina-Schaeffler KGInventor: Georg Hofmann
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Patent number: 7182521Abstract: An axial roller bearing includes two bearing disks placed in plane-parallel relationship to one another. Each bearing disk has a radial section to form a raceway and an axial collar connected to the radial section, wherein the collar of one bearing disk and the collar of the other bearing disk overlap one another. The axial collars are arranged on an inner or outer peripheral edge of the bearing disks and have breaches to define at least one opening of variable size in dependence on a relative rotation of the bearing disks in circumferential direction. A cage is disposed between the bearing disks for accommodating rolling elements.Type: GrantFiled: April 15, 2005Date of Patent: February 27, 2007Assignee: Ina-Schaeffler KGInventors: Leo Müntnich, Wolfgang Fugel, Alexander Reimchen
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Patent number: 7178984Abstract: A bearing arrangement for supporting a universal joint trunnion in an outer cup includes a radial bearing having cylindrical rolling elements disposed between the trunnion and the outer cup, and a resistance member made of a material to allow elastic deformation and bearing upon a confronting surface area of an end surface of the trunnion. The resistance member and the trunnion are hereby so configured either alone or in combination as to form a large lubricant reservoir. Disposed at a distance to the end surface of the trunnion is a stop member to define an axial gap, whereby the stop member inhibits an axial movement of the trunnion after the trunnion has moved in axial direction to close the gap.Type: GrantFiled: March 12, 2004Date of Patent: February 20, 2007Assignee: INA-Schaeffler KGInventor: Martin Kruppa