Abstract: The present invention pertains to a valve actuating lever having a non-cut formed oblong base body which is configured essentially symmetrical to a longitudinal symmetry plane extending essentially longitudinally therefrom, a valve contact area arranged on a first end of said base body, two tabs arranged on both sides of said longitudinal symmetry plane in said valve contact area, each respectively having a lateral surface aligned facing said longitudinal symmetry plane, whereby said tabs are formed on said base body and bent over toward said valve contact area. Said tabs are arranged spaced at a clearance distance at an end edge of said oblong base body, said clearance distance being less than the clearance of said lateral surfaces in the valve contact area.

Abstract: A cam follower (1) designed to be switchable between different lifts for at least one gas-exchange valve and includes two adjacent sections (2,4) which can be coupled together via a coupling element (15). The coupling element (15) cooperates with a shutoff slide (14). It is a special feature of the shut-off slide (14) that it is produced as a mechanically closable and openable piston for an inlet (22) in a pressure chamber (20) in front of the coupling means (15), the piston, however, being maintainable hydraulically in its open position via high switching pressure. At the same time, the shutoff slide (14) is completely incorporated in the cam follower (1) and does not extend beyond it. As a result, undesired fluctuations in the pressure of the hydraulic fluid can no longer act on the coupling means (15) during the base circle of the cams acting on the cam follower (1) and an intended turned-off state.

Abstract: A clamp-type locking mechanism has a driven element rotatably arranged with respect to a holding element and having ramps which together with a track of the holding element define clamping gaps for receiving spring-loaded clamp rollers. An adjustment element is swingable to a limited extent with respect to the driven element and provided for rotation in unison with the driven element, with the adjustment element having engagement members for moving the clamp rollers out of their clamping gaps. Located between the driven element and the holding element is a friction device for transmitting a friction moment. In order to maintain a correct friction moment during wear of the friction device, a spring mechanism is provided by which the friction device is biased with its friction surface against the holding element.

Abstract: A roller bearing with roller elements constructed as rollers (4) or balls arranged between an inner race (3) and an outer race (5), and with a thick-walled outer ring (6) if provided. The inner surface of the outer ring forms the outer race (5) and the outer surface is provided for direct rolling on a cylindrical matching roller path, and has a crowned contour (7) curved in longitudinal section. In accordance with the invention, the spherical crowned contour (7) of the outer ring (6) is formed from several arcs that pass smooth into one another whereby the radius of curvature of a central arc and the radius of curvature of an outer arc have in a ratio from 2 to 1 up to 5 to 1 in relation to one another.

Abstract: A pressure roller for textile machines, in particular for a texturing machine, is provided. A covering (3) is preferably arranged over an intermediate sheath (4) on a support sheath (5). The support sheath (5) is rotatably supported via a deep groove ball bearing (1) on a carrying axle (2). For cost-effective manufacturing of a pressure roller, a standardized deep groove ball bearing (1) that has at least an outer bearing race (6, 7) and balls (9) that roll on the ball grooves (10, 11) of the bearing race (6, 7) is proposed; the outer bearing race (6) of which carries the support sheath. The structural height of the standardized deep groove ball bearing amounts to at maximum 80 percent of the axial extension of the support sheath (5).

Abstract: The invention relates to a hydraulic camshaft adjustment device of rotary piston type, which consists of a driving wheel in drive Connection with a crankshaft and of an impeller which is torsionally connected to a camshaft. The driving wheel has a hollow space formed by a peripheral wall and two side walls, at least one hydraulic working space being formed, in this hollow space by at least two boundary walls. The impeller has at least one radial vane (13) and with each vane (13), subdivides a hydraulic working space into two hydraulic pressure chambers. In this arrangement, the outer end surface of each vane (13) of the impeller is in sealing con tact with the peripheral wall of the driving wheel by means of a spring element.

Abstract: A thrust ball bearing includes first and second circular ring shaped bearing disks arranged in spaced-apart disposition and moving eccentrically to one another so that bearing balls, arranged therebetween, roll on pertaining circular tracks. Both circular ring shaped bearing disks are made from a through-hardenable ferrous material to thereby permit realization of a particularly high fatigue strength.

Abstract: A device for actuating a vehicle brake, which device comprises a threaded spindle (1) which is secured against rotation in a stationary housing (4) while being axially displaceable toward and away from a brake disc (6) of the vehicle brake, and further comprises a nut (2) which surrounds the threaded spindle (1) and effects a displacement thereof, the nut (2) having a longitudinal axis and being mounted for rotation about this longitudinal axis in the stationary housing (4) while being connected to the rotor of a drive motor (9), comprises, according to the invention, a motion-transmitting ramp unit (10) equipped with rolling elements and arranged between the nut (2) and the drive motor (9).

Abstract: The invention concerns a rolling bearing cage (1, 21) made of a resilient plastic and comprising at at least one peripheral point, an axially extending gap (2) formed by a first cage end (4) and a second cage end (3) which is spaced from the first cage end (4), each of the first and the second cage ends (4, 3) comprising at least one projection and at least one recess, said recess and projection having complementary shapes, and as viewed in axial direction, the recess and the projection partially engage each other, and as viewed in peripheral direction, the recess and the projection partially overlap each other.

Abstract: The invention concerns a suspension strut (1) for automotive vehicles comprising a shock absorber (20) to which a coil spring (21) is associated, the suspension strut (1) being connected to a steering knuckle (5) and a vehicle body (4) at articulation points (2, 3), the upper articulation point (2) comprising a bearing (6) which is associated to carrier elements (10, 11). According to the invention, the bearing (6) comprises bearing rings (7, 8) which are supported directly on carrier elements (10, 11) and centered on radially spaced rims (12, 13), the carrier elements (10, 11) being made of different materials.

Abstract: A switchable cam follower (1) for a valve train of an internal combustion engine, which valve train can be actuated indirectly by tappet push rods, the cam follower comprises an outer and an inner section (4,5) end for switching-off the cam follower (1) from the cam lift, the inner section (5) is pivotable relative to the outer section (4) during a valve lift phase of the cam.

Abstract: A cam follower (1) is proposed, which is made from a sheet metal material, and has a profile that is U-shaped in cross-section. In the area of its one end (6), its side walls (2) taper conically. At the same time, straps (7) for guiding a shaft end of a gas exchange valve are provided on an underside (5) of the cam follower (1) as an extension of the side walls (2) and are bent by 180° to fit on the underside (5) in the area of the end (6). A cam follower (1) of this type is made in a simple way, has an excellent guide possibility for the shaft end of the gas exchange valve, and has a smaller mass with a smaller mass moment of inertia than cam followers that have been used until now.

Abstract: A finger lever that is shaped without cutting having two side walls (5, 6), which are connected in a first end area (1) by a lower wall (4) in a U-shape which opens upwardly, is provided with a bearing surface for a gas exchange valve (11) that is formed by the side walls (5, 6) being adjacent to each other axially in the second end area (2) so that a separation plane (13) is formed in a longitudinal center plane (12) of the finger lever.

Abstract: The invention concerns a centering device for steering valves of automotive vehicles and is characterized in that a needle roller bearing (16) is arranged between the drive shaft (5) and the valve bushing (12), said needle roller bearing (16) having an outer bearing ring (17) which is configured as a thin-walled sleeve which comprises, in at least one peripheral section, an elastically yielding raceway convexity (18) deviating from the circular shape, and said peripheral section comprises an angular groove (22) which is situated radially opposite an angular groove (23) disposed in an associated portion of the drive shaft (5). The needle roller bearing (16) of the invention assures a fine centering to the hydraulic center of the steering valve.

Abstract: A switchable cam follower (1) of a valve train of an internal combustion engine, a stop means (19) extending between the axially relatively displaceable components, housing (2) and inner element (6), of the cam follower (1), a first component of the stop means (19) being a locking element (15) fixed in a reception (12) of the inner element (6), the locking element (15) extends radially outwardly into a slot (18) which is a further component of the stop means (19) and slot (18) has an upper end (20) which defines an upper end stop whereby the locking element (15) extends over a substantial part of half a length of the reception (12) in the inner element (6) and, at the same time, penetrates to the largest possible extent through the housing (2) in the region of the slot (18) which guarantees an excellent fixing of the locking element (15) in the housing (2) which is maintained through the entire life of the cam follower (1), and is further assured that component loading resulting from abutment is only slight.

Abstract: The invention concerns a radial piston pump comprising a rotating pump shaft having an end portion connected to a rotationally fixed eccentric ring, said radial piston pump further comprising an eccentric bearing arranged on an outer peripheral surface of the eccentric ring, the eccentric bearing comprising a needle roller bushing having radially inward directed flanges between which bearing needle rollers are arranged for rolling, at least one pump plunger arranged in a pump housing and extending radially of the pump shaft being supported by an end face on the needle roller bushing, while the end portion of the pump shaft is supported in a housing via an adjacent second support bearing.

Abstract: A tensioner for traction means such as a belt, includes a housing which accommodates a cylinder for guiding a hydraulically dampened, spring-loaded plunger in an axial direction for tensioning the traction means. The interior space of the housing is closed by a cover which has a guide opening for passage of the plunger. A seal is placed outside the cover to seal an annular opening bounded by the housing and the plunger. In order to prevent a gas cushion under pressure and trapped between the cover and the seal, from pushing the seal from its seat, the cover is formed with a vent passageway which communicates with the interior space for release of the gas cushion via the vent passageway into the interior space.

Abstract: The invention relates to a rocker arm (1) of a valve train of an internal combustion engine. This rocker arm (1) comprises two longitudinally extending side walls (2, 3) which enclose an intermediate space (16) while being connected to each other by a crossbeam (4) to form a U-shaped cross-section. According to the invention, a separate channel (24) for the transport of lubricant is created on a top surface (22) of the crossbeam (4). This channel (24) starts from an abutment (9) for an end of a push rod on the undersurface (8) of the crossbeam (4) and leads to a support (12) for an end of a gas exchange valve in the region of a second end (11) of the crossbeam (4).

Abstract: A bearing assembly includes a rolling bearing, having an inner ring, an outer ring, rolling bodies arranged between the inner ring and the outer ring, and a clamping ring, for supporting a steering shaft and a further bearing, for supporting a steering shaft. The rolling bearing is further provided with a pre-tensioning element for axially loading the rolling bearing and the further bearing relative to one another, and a support element for axially supporting the steering shaft are further provided, with the outer ring circumscribing at least one of the pre-tensioning element and the support element at radial and axial distances to an inner surface area of the outer ring. A retention member holds the at least one of the pre-tensioning element and the support element in axial direction, to form an assembly unit, with the pre-tensioning element and the support element being integrated in the outer ring.

Abstract: A device provided on a internal combustion piston engine for changing the rotational relations between at least one camshaft (5) and a crankshaft (6) includes a hydraulic cylinder (4). This hydraulic cylinder (4) is acted upon by a supply unit (7, 14) which displaces gas cushions in the hydraulic cylinder (4) when the internal combustion piston engine is at a standstill and replaces the gas cushions with hydraulic cylinder, especially motor oil.