Abstract: The inventions provides a method of making a lever-type cam follower (2) out of thin-walled light-weight sheet metal for loading at least one gas exchange valve of an internal combustion engine, said cam follower comprising two side walls (12a, 12b) which, together with a crossbeam (11) that connects these side walls to each other, form a U-shaped cross-sectional profile pointing away from the gas exchange valve, the cam follower further comprising two finger-like tabs (5a, 5b) for receiving a stem end of the gas exchange valve, which tabs are configured on one end (3) of the cam follower (2) as extensions of the side walls (12a, 12b) and are bent through 180° onto an undersurface (9) of the crossbeam (11), said method comprising the following steps which may be supplemented with further intermediate steps: a) punching out a blank (1) out of sheet metal with the tabs (5a, 5b) being bulged outward in arc-shaped curves that are configured as mirror images of each other in respect of a central longitudinal

Abstract: A self-balancing device for a rotating machine part, includes an unbalance compensation disk, which is made through a non-cutting process and surrounds a rotation axis of a rotating machine element. A plurality of compensating masses is freely movable in an interior space of the compensation disk and assumes automatically a position to compensate an unbalance of the machine element. The compensation disk includes a first half shell and a second half shell having two axial partition planes, which are spaced from one another in a radial direction, wherein the first and second half shells are non-detachable connected to one another.

Abstract: Tensioning device for traction means, such as belts or chains, with a housing-like part in which a tensioning mechanism and a spring elements tensioning the traction means are mounted, whereby the tensioning device can be placed in an assemblage of the traction means drive having a drive shaft so that the tensioning mechanism encompasses the drive shaft, with the housing-like part being disposed so as to prevent rotation, wherein the tensioning mechanism comprises two tensioning arms (7, 8, 26, 27, 47, 49) that are mounted in the housing-like part so as to be able to rotate about axes and with respect to one another, with the tensioning arms being spring-biased by a common spring element (14) that is retained with one end in one tensioning arm and with the other end in the other tensioning arm.

Abstract: An idler gear (7) is mounted in a variable speed gear transmission (1) on a rolling bearing crown ring (10) whose first and second rolling elements (12, 20) are guided in a cage (11) and have different diameters. The first and second rolling elements (12, 20) are of a same type, size ratios between the first and second rolling elements are defined so that, in an unloaded state, the larger diameter of the second rolling elements (20) is such as to become equal to a diameter of the first rolling elements (12) in an engaged state under radial loading, whereby a limit of elasticity of the second rolling elements (20) having the larger diameter in the unloaded state is not exceeded.

Abstract: The invention relates to an electrically driven device (1) for the angular adjustment of a shaft relative to its drive (2), said device comprising an eccentric gearing that comprises at least one internally geared wheel and one spur gear that meshes with the internally geared wheel and can be driven by an electrically rotatable eccentric shaft. The considerable structural complexity and space requirement as also the noise level of prior art devices is reduced by the fact that the internally geared wheel is configured as a first and a second internally geared wheel (6, 9), and the spur gear is configured as a first and a second spur gear (16, 17) that have the same number of teeth and are rotatable in opposite directions, the internally geared wheels (6, 9) are connected to the drive (2) and the spur gears (16, 17) are connected to the camshaft and can be driven through a double eccentric shaft (20) comprising identical eccentrics (18, 19) arranged offset at 180° to each other.

Abstract: In a sliding sleeve (1) of a synchronizing unit having inward directed teeth (2, 11) configured on the inner periphery of the sliding sleeve, the teeth (11) comprise recesses (11a) formed by plastic displacement of material out of the teeth (11).

Abstract: In a linear rolling bearing comprising a shaft (1) acting as a guide rail and having a profiled or round, particularly circular cross-section, an outer peripheral surface of the shaft forming raceways (6) extending in longitudinal direction for rolling elements, for example, balls, cylindrical rollers or convex rollers, the linear rolling bearing further comprising a cup (2) surrounding the shaft (1) and the rolling elements (3), said cup comprising on an inner surface opposing raceways (7) for the rolling elements (3) while being arranged in a reception or a bore (10) of a connecting structure (11), the cup (2) has a divided configuration in longitudinal direction and is composed of a plurality of segments that comprise the opposing raceways (7) and further comprise support surfaces extending parallel to the opposing raceways (7), through which support surfaces, the segments are supported on one another in peripheral direction of the cup (2).

Abstract: A chain tensioner, includes a housing intended for attachment to a stationary machine element of an internal combustion engine, and a piston received in the housing for axial displacement against a strand of a chain to thereby implement a tensioning of the chain. An adjusting mechanism is provided for moving the housing relative to the machine element in a direction to and away from the strand of the chain, whereby a spacer establishes a distance between the housing and the strand to thereby define an installation position of the housing.

Abstract: A method for making a support (6) for a valve stem in a lever-type cam follower made of sheet metal is proposed. According to the invention, this support (6) with its guide walls (7, 8) is made by cold forging.

Abstract: A hydraulic camshaft adjusting device, which comprises a drive wheel (2) and a pivotal impeller wheel (10) connected in a rotationally fixed manner to a camshaft (9), the drive wheel (2) comprises a. cavity formed by a peripheral wall (3) and two lateral walls, in which cavity at least one hydraulic working space (8) is formed by at least two delimitation walls (7) and the pivotal impeller wheel (10) has at least one radial blade (12), and with each blade (12) divides a hydraulic working space (8) into two hydraulic pressure chambers (13, 14), which are sealed off from one another by sealing elements (17) disposed between the drive wheel (2) and the pivotal impeller wheel (10), the pivotal impeller wheel (10) can be mechanically coupled to the drive wheel (2) in a preferred basic position, a locking element (18) disposed on the drive wheel (2) being movable by a spring clement (19) into a complementary seating (20) in the drive wheel (2).

Abstract: A fan rotor (7) for an electromagnetic fan clutch is mounted on a drive shaft (1) with the help of a three-ring bearing (8) so that three different speeds of rotation of the fan rotor (7) can be obtained. To reduce wear, especially in the presence of impact loads and oscillatory movements of the three-ring bearing (8), this three-ring bearing (8) is configured so that different materials are paired with each other in regions of rolling contact.

Abstract: An adjusting device for carrying out an adjusting function particularly for adjusting a seat of a motor vehicle comprising a housing (5) and a pivoting lever (3) whose one end is applied to a clamping roller switch gear (1) arranged in the housing (5) and comprising drive element (10), which is pivotable by the pivoting lever (3), and a driven element wherein for entraining the driven element, clamping rollers (39) adapted to be clamped between the drive element (10) and the driven element which is mounted on the housing (5) in radial direction through a radial bearing (18), further comprising a switchable clamping roller locking gear (2) arranged within the hosing (5) and whose driven shaft (4) is adapted to be coupled to the driven coupling ring 15 of the clamping roller switch gear 91) for transmitting a rotary motion from the clamping roller switch gear (1) to the clamping roller locking gear (2), wherein clamping rollers (19) are adapted to be clamped between the driven shaft (4) of the clamping roller l

Abstract: The invention concerns an overrunning clutch for receiving a shaft (10), said overrunning clutch comprising an outer ring having clamping surfaces, a cage (5) equipped with clamping rollers (6) and spring elements (8) for suspending the clamping rollers (6) being arranged in the outer ring. The clamping rollers (6) comprise a frustoconical bevel (9) on at least one end face, so that when the shaft (10) is not inserted, the enveloping circle diameter DHK of the conic frustum at its outer end is equal to or larger than the diameter DW of the shaft (10). This enables an automatic assembly of the entire overrunning clutch because the shaft (10) can be inserted without any problem into the cage (5).

Abstract: A transport and mounting device for one or more sets of adjoining full complement cylindrical rolling elements which are disposed during transportation between an inner and an outer bushing arranged concentrically in each other, one end of each of the bushings comprising a retaining collar which is oppositely oriented to the retaining collar of the other bushing, the retaining collars of the device are arranged next to each other in axial direction and are in contact and in overlapping relationship with each other.

Abstract: A coil spring (1) and support bearing (2) arrangement for suspension struts (3) with a shock absorber, supporting a steering knuckle of an automobile has a rolling-contact bearing (7), with an axis (x); a receiving body (6), arranged below the rolling-contact bearing (7) in which the rolling-contact bearing is inserted; and a coil spring (1). The coil spring (1) has a force application line (f), which is offset relative to the axis (x) of the rolling-contact bearing (7) at an angle (a). The coil spring (1) has a first portion (8), which, starting from the winding end (17), winds around the receiving body (6). The first portion (8) abuts the receiving body (6). The winding end (17) of the coil spring (1) is arranged in the area of the plane E1 formed by the force application line (f) and the axis (x).

Abstract: In a linear guide comprising a guide housing (1, 16) configured as a profiled support, and at least one guide rail (2) fixed therein, a guide carriage (3) being supported for longitudinal displacement on the guide rail (2) while being connected to a running carriage (5, 17) that is situated partly outside the housing (1, 16) and extends through a longitudinal opening (7, 8, 18, 19) into the housing (1, 16), the linear guide comprising within the housing (1, 16), a drive for the longitudinal displacement of the guide carriage (3) and of the running carriage (5, 17), according to the invention, the guide housing (1, 16) is an extrusion molded profile made of aluminium and the drive is configured as an electromotor with one motor component arranged in the guide housing (1, 16) and one motor component arranged in the running carriage (5, 17).

Abstract: A synchronizing ring (1, 8, 13) having a substantially cone-shaped annular body (2, 10, 14, 21) is made by shaping out of sheet metal and is provided on its end section (2b) having the small cone-diameter, with stops (5, 6, 7) that extend in radial direction beyond the contour of the outer peripheral surface of the annular body (2, 10, 12, 14).

Abstract: A radial-axial roller bearing, having an inner ring (5), coaxially with which an outer ring (4) is disposed, between which rolling bodies (15) roll in order to absorb radial forces, and having cylindrical rolling bodies (17, 18) disposed in cages (19, 20, 24, 25) on both sides to absorb lateral forces, the tracks of which are formed on one side by the end faces of the outer ring (4) and on the other side by a runner plate (8, 9) in each case. The inner ring (5) is formed from two part-rings (6, 7), which are integrally connected to the runner plates (8, 9), a separating plane (14) being placed between the part-rings (6, 7) in the track region of the radial bearing (1). In this manner, a compact, tilt-resistant bearing unit is formed.

Abstract: A method of actuating a device for varying the valve timing of an internal combustion engine without jamming of the locking element during starting of the internal combustion engine, the solenoid of the hydraulic valve is at first energized through a number of high frequency cycles of high and low energization that are broken off after a defined period of time or after a defined number of cycles, followed by a renewed energization of the solenoid with a high energization with a simultaneous check by the microprocessor to determine whether the element fixed to the camshaft has been angularly displaced relative to the element fixed to the crankshaft out of its basic position whereby if the microprocessor determines that the element fixed to the crankshaft is still in the basic position, the first two phases of energization are repeated and the microprocessor has determined an angular displacement of the element fixed to the camshaft, the solenoid is energized with a current defined by the microprocessor which i

Abstract: A device (1) for varying the valve timing of gas exchange valves of an internal combustion engines, and the invention more particularly concerns a hydraulic camshaft adjusting device of a rotary piston type comprising a drive pinion (5) connected in driving relationship to a crankshaft, and a winged wheel (6) connected rotationally fast to a camshaft (4), the drive pinion (5) comprises a hollow space (10) defined by a circumferential wall (7) and two side walls (8, 9), a plurality of hydraulic working chambers being formed in the hollow space (10) by a plurality of limiting walls and the winged wheel (6) comprises a plurality of radial wings (14) that extend individually into the hydraulic working chambers (12) and divide these into first and second hydraulic pressure chambers (15, 16) which, when pressurized by a hydraulic pressure medium, effect a pivoting or a fixing of the winged wheel (6) relative to the drive pinion (6).