Abstract: A bearing assembly for a threaded drive, includes two grooved ball bearings arranged in side-by-side disposition and suited to one another for adjustment of a desired prestress, and a restraining element which holds the grooved ball bearings in place and is provided with a flange, directed radially outwards, for attachment to a housing. The restraining member is formed by a sleeve, made through a process without material removal, and has one end provided with a radially inwardly directed projection for embracing an end face of the grooved ball bearings.

Abstract: A shift device for a change-speed gearbox, includes a plurality of shift rockers, each shift rocker being supported in a pivot bearing and rotatable by actuating a shift finger, fixedly mounted on a shift shaft. The shift rockers are provided to axially displace respectively connected shift sleeves, whereby a locking unit is operatively connected via locking levers to the shift rockers to lock those shift rockers that are not activated. Each locking lever has one end of curved configuration which terminates in a cylindrical pin for engagement in a recess of the associated shift rocker, wherein the cylindrical pin is captivated within the recess of the shift rocker by impressing boundary regions of the recess.

Abstract: A shift rocker for use in a gear shift mechanism, includes a bracket of forked configuration, with the bracket having spaced-apart sidewalls in parallel relation for axially displacing a shift sleeve, and an arched cross member interconnecting the sidewalls. Connected to the cross member of the bracket for introduction of force is a rail which includes, directly or indirectly, a shift slot for engagement of a shift finger in fixed rotative engagement with a shift shaft, a latch contour for a separate stationary shift latching means, and a receiving member for engagement of a locking lever of a locking unit to inhibit a shifting movement of the shift rocker when the shift rocker is inactive.

Abstract: A linear rolling bearing element mounted to a running surface of a guide rail, includes a main body which having a rolling-element circuit for guiding the main body along a guide rail via a plurality of rolling elements, with the rolling-element circuit having a load-bearing track and a return track. The main body has opposite ends, each of the ends having formed therein a bay which is accessible through an adjacent end face of the main body. Received in each of the bays of the main body is a deflection member which has formed therein an arcuate passageway for interconnecting the load-bearing track and the return track. Disposed in the load-bearing track, the return track and the arcuate passageways is a guide system of a polymer material, for guiding the rolling elements. The guide system includes a coating which is applied through an injection-molding process in a single working step in the load-bearing track and the return track.

Abstract: A shift control apparatus for use in a change-speed gearbox of motor vehicles includes a housing, a selector shaft axially slidably and rotatably supported in the housing and operatively connected to a gear selector lever for axial displacement of the selector shaft to realize a preselection of a shifting lane and rotation of the selector for shift into a selected gear, a shifter finger secured to the selector shaft and engaging slidable shifter forks or shifter bars, and a restraining mechanism for preventing a misshift between a reverse gear and a forward gear positioned in a same shifting lane. The restraining mechanism includes a transmission element mounted in fixed rotative engagement to the selector shaft and having a flanged edge, and a restraining member rotatable and axially moveable in parallel relationship to the selector shaft. The restraining member has a locking surface forming a deflector ramp for support of the flanged edge of the transmission element, thereby effecting a deflection, i.e.

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 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: 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 tappet (1) for a valve drive of an internal combustion engine is so designed as to be switchable for different valve lifts and includes an outer circular ring shaped section (5) which encloses a circular section (6). Both sections (5, 6) are acted upon by cams of different lifts, and selectively interconnectable together by coupling elements (9). According to the invention, a juncture (12) for hydraulic fluid is positioned in the skirt (2) and extending from a feed bore (13) in the cylinder head (4) at a lowest point of the tappet (1), when viewed in direction of gravity, in order to install the tappet (1) in an extreme slanted disposition. In opposition thereto, a port (21) of the channel (27), following the juncture (12), is arranged at a highest section of the tappet (1), when viewed in the direction of gravity.

Abstract: A shiftable clamping-type locking mechanism, includes two track-defining elements and a plurality of clamping members, e.g. rollers or balls, arranged between the tracks of the elements and so spring-biased as to seek a clamped position. The clamping members are shiftable by a control unit from the clamped position into a release position in which the clamping members are liberated from the tracks so that the two elements can be freely moved relative to one another. A coupling unit positively connects the two elements to one another in order to prevent an undesired slip between the elements.

Abstract: A tensioner for a driving member includes a piston (4) guided slidably in a housing (1) and spring-loaded against the driving member. The tensioner further includes a damping device (9, 18) for damping movements of the piston through discharge of hydraulic fluid, such as engine oil, from a pressure chamber (16) via at least one leak gap (13, 26) of the damping device (9, 18). A simple and economic implementation of the leak gap is assured by arranging a rotationally symmetrical body such as a cylinder (10) in a receptacle (11, 24) of the damping device (9, 18), so that the leak gap (13, 26) is formed between the wall (12, 25) of the receptacle and the peripheral surface of the rotationally symmetrical body (10).

Abstract: A valve timing control apparatus for adjusting a rotational relation of a camshaft relative to a drive unit of an internal combustion engine, includes a clutch unit positioned between the drive unit and the camshaft and including first and second sections connected to the camshaft and movable relative to one another. A freewheel mechanism is placed between the first and second sections, whereby the first and second sections and the freewheel mechanism form each a clamping surface for interaction with confronting surfaces of the camshaft and the drive unit.

Abstract: A synchronizer element for use in a synchronizing device of a manual transmission, includes a hub secured in fixed rotative engagement on a gearshaft, and a guide member fixedly secured to the hub and having a splined outer circumference formed with at least one pocket for receiving a loading member and in mesh with a shift sleeve moveable between axially spaced pinion gears rotatably supported on the shaft. The synchronizer element is made of two separate parts which are so joined together as to form pockets for thrust members which are held captive and guided in the pockets.

Abstract: A lever-type cam follower for a valve drive of an internal combustion engine for operating at least one gas exchange valve, includes a main body exhibiting a substantially U-shaped configuration and comprised of two spaced-apart side walls extending in a longitudinal direction and a cross member interconnecting the side walls. The cross member defines a valve-proximate side which includes a substantially planar bearing surface for receiving a gas exchange valve. In addition, the cross member is provided with a passageway for conduction of lubricant to a contact zone of the gas exchange valve upon the bearing surface, whereby the passageway is disposed outside the contact zone but in immediate proximity thereto.

Abstract: A device for continuously adjusting an angular orientation of a camshaft relative to a crankshaft of an internal combustion engine, includes a housing, an adjusting piston dividing the housing into two pressure compartments and reciprocating in the housing between two end positions in response to operation of a pressure fluid circuit, and a sliding sleeve connected in one piece to the adjusting piston. The sliding sleeve has a first toothed section in mesh with a drive wheel that is in driving relationship with the crankshaft, and a second toothed section in engagement with a toothed bushing that is securely fixed to the camshaft. The toothed sections are formed as helical gears so that an axial displacement of the adjusting piston effects a relative rotation between the drive wheel and the camshaft.

Abstract: A tensioning eye for use in a tensioner for a traction drive, in particular a belt drive, in an internal combustion engine, includes a fastening sleeve, a bushing, and an elastic ring circumscribing the bushing for securing the bushing in a bore of the fastening sleeve. The elastic ring has opposite ends formed with radially outwardly directed flanges which are spaced from opposing end faces of the fastening sleeve and define an outer diameter which is greater than a greatest inner diameter of the recess so as to form a radial overlap.

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.