Abstract: A device for hydraulically adjusting the rotation angle of a camshaft with respect to a crankshaft of an internal combustion engine: A drive unit connected to a crankshaft and an output unit connected to a camshaft, having radially extending, axially facing sides secured by the pre-stressing force of a central securing bolt. The drive unit is rotably mounted to the output unit and they are so connected that at least two hydraulic pressure chambers transmit relative rotation forces. An annular disk with coating on opposite sides increases the frictional force between the end face of the output unit which faces the camshaft and the end of the camshaft and enables reduction of the pre-stressing force on the bolt. The character of visually detectable elements on the disk enable detection of the presence or absence of the disk.

Abstract: A self-adjusting release bearing in the form of a tapered rolling bearing for a separating clutch disposed between an internal combustion engine and a gearbox of a motor vehicle, includes a non-rotating first bearing ring, a revolving second bearing ring, and a plurality of rolling elements guided between the first and second bearing rings. Supported upon a calotte-shaped section of one of the first and second bearing rings in a contact zone is an adjustment ring having a complementary calotte-shaped section to thereby allow pivoting of the release bearing, whereby a sliding element made of thermoplastic material is disposed in the contact zone.

Abstract: A switching element (1) for a valve drive of an internal combustion engine, preferably for shutting off valves, is provided, and includes an external part (2) in whose bore (3) an inner element (5) is axially movable. The external part (2) and the inner element (5) have at least a respective mutually aligned recess (7, 8) due to an axially spaced relative position obtained through a lost motion spring (6), and in one of the recesses, in the direction of the other recess, displaceable coupling means (9) are mutually applied in the relative position for coupling the inner element (5) with the external part (2). Two pistons (10) are provided as coupling means (9), which travel in the recess (8) formed as a radial bore of the inner element (5), and which diametrically oppose one another.

Abstract: The invention proposes a variable valve train (1) for throttle-free load control of an internal combustion engine. Each cylinder of the internal combustion engine is provided with two inlet valves (9). According to the invention, each inlet valve (9) cooperates with a particular adjusting element (8, 8a), and the adjusting elements (8, 8a) can be actuated independently of each another. This additionally enhances the variability of the valve train.

Abstract: A clutch body (6) for a gear-shifting and synchronizing device is provided, in particular for motor-vehicle transmissions. The clutch body has a clutch disk (1) and a conical ring (5), wherein the clutch disk (1) is rotationally fixed to a gear wheel and has on its outer circumference a toothed section (7), which can be coupled to a counter-section of a sliding sleeve rotationally fixed to a transmission shaft, wherein the clutch disk (1) is produced from several parts (2, 2a, 3, 3a, or 4) and the parts (2, 2a, 3, 3a, or 4) are connected to each other.

Abstract: An axial bearing unit made up of a cage (2) and races (3, 4) is in which the collar (5) located at the outer peripheral edge of the race (3) is extended by a first flange (7) and a protruding rib (8) is formed in an area made up of the collar (5) and the flange (7). The protruding rib faces inwardly to radically contain the cage (2).

Abstract: An axial bearing comprising two runner plates held together by a resilient retaining ring having two angled settings. The retaining ring has holding lugs whose circumcircle can be changed in diameter D1 or D2 by a resilient reversible changeover to selectively hold the runner plates together or release the holding.

Abstract: A saddle support for securing a saddle of a vehicle, typically of a bicycle, comprises an outer part (2) that surrounds at least a portion of an inner part (1) with formation of a gap (8). A rolling bearing for a linear mounting of the inner part (1) on the outer part (2) is arranged in this gap (8). A spring element (5) acting in mounting direction spring-mounts the inner part (1). The rolling bearing is constituted by a linear bearing assembly (9) with recirculating rolling elements. The rolling elements (13) are in rolling contact with rolling element raceways (13a, 15, 14), at least one of said rolling element raceways being configured on the linear bearing assembly (9) and at least one other of said rolling element raceways being configured on the inner part (1).

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.

Abstract: An electrically assisted, power steering system for motor vehicles having an input shaft (6) connected to a pinion shaft (2) by a torsionally elastic member (5) is supported in a steering housing (1) by a rolling bearing. The rolling bearing is formed as an elastic, flexible roller bearing (13), whose cylinder rollers (13.5, 13.6) have at least at one peripheral position an elastically deformable cylinder roller (13.6), having a diameter that is slightly greater than a diameter of the other cylinder rollers (13.5). In this way, an exact guidance of the input shaft (6) is achieved, so that the applied steering torque can be used accurately by an evaluation unit (15) for controlling the servo motor (7).

Abstract: A bevel-pinion shaft (5) of a differential of a motor vehicle is supported in a housing (1) by two spaced unilaterally loadable double-row tandem angular-contact ball bearings (16,17) which face each other in an O-arrangement. Compared to the classical support by conical-roller bearings, a substantially lower frictional moment and substantially lower bearing wear are attained by the bearing arrangement of the present invention.

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).

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.

Abstract: 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.

Abstract: A bearing arrangement (2) in a manual transmission for transferring torque between at least a first guide surface (14b) on a swivel element (14), which can swivel and which is fixed along the bearing relative to the manual transmission, and a second flat guide surface (19a), which can move in the longitudinal direction relative to the bearing (2) and which is supported with the swivel element (14) so that it can swivel at least in the bearing (2). The bearing holds a selector shaft (4) so that it can move in the longitudinal direction and so that it can also swivel, wherein the selector shaft (4) is provided with an adapter (19).

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.

Abstract: A radial bearing unit for a driveshaft in motor vehicles, in particular a halfshaft for connecting a transmission with a driven front wheel, includes a holder having a housing made of two housing portions which are so configured as to form together a spherical receptacle. The integrity of the housing is realized by providing the housing portions with flanges for mutual support. Seated in the spherical receptacle is a curved outer surface area of a rolling-contact bearing. Each of the housing portions has at least two tabs extending radially in spaced-apart relationship from the flanges for form-fitting engagement in a machine part, when the radial bearing unit is installed in the machine part.

Abstract: A clutch release bearing includes a housing, a first bearing ring having a skirt for fixed rotative securement of the bearing ring to the housing, a revolving second bearing ring connected to the separating clutch via a spring element, and a plurality of rolling elements guided between the first and second bearing rings. Seals are provided on both sides of the rolling elements at a distance thereto, wherein one seal is configured to seal an annular gap between the first and second bearing rings and includes a sealing arrangement which is securely fixed to the first bearing ring and comprised of at least two components to establish two sealing zones, wherein the second bearing ring and the sealing arrangement interact in such a way that a desired installation position of the sealing arrangement is automatically establishes as the second bearing ring is installed.

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.

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.