Abstract: A gear shifting drum (2) for a gear shifting device of variable-speed gearboxes for motor vehicles has a curved path (11a to 11c) for guiding an engagement member (13) of the gearshift fork (12a to 12c), wherein the gearshift fork (12a to 12c) is directly connected to a synchronization device. According to the invention, at least one radially outwardly directed wall (9, 10) is arranged on the outer surface area (8) of the gear shifting drum (2) for formation of the curved path (11a to 11c).

Abstract: The invention relates to a window cage (1) for a needle bearing. The pockets (5) of said window cage are formed by punched out sections and by a stamping process with material displacement in a cage strip (9) which is then bent round. According to the invention, the window cage (1) is characterized in that before the cage strip (9) is bent, the opposite surfaces of the web walls of a pocket (5) are made up of three sub-surfaces (10, 11, 12) in the area of the retaining projections (7, 8). The first two sub-surfaces (10) follow a course which is parallel to a middle vertical (13) and each extend into a second sub-surface (11) at their upper end, said second sub-surface running diagonally in the direction of the central point of the pocket. Each of the second sub-surfaces then ends in a third sub-surface (12) which also runs parallel to the middle vertical (13).

Abstract: A gearshift fork (2, 3) for a manual transmission of an automotive vehicle is fixed on a selector rod and engages with its bifurcated section into a peripheral groove of a sliding sleeve. The bifurcated section (6) extends transversely of the central longitudinal axis of the selector rod and comprises a stiffening. To create an economic configuration of the gearshift fork (2, 3) and enable a production in large series, the gearshift fork is manufactured as a complete component by shaping without chip removal.

Abstract: The invention concerns a rotary piston adjuster (1, 1′) for hydraulic phase adjustment of a camshaft of an internal combustion engine relative to a drive pinion (6), said adjuster comprising a rotor (3, 3′) fixed to the camshaft and cooperating with the drive pinion (6) for effecting phase adjustment.

Abstract: The Invention concerns g solenoid valve, more particularly a proportional hydraulic valve which is arranged within a hydraulic system of a device for varying the valve timing of gas exchange valves in an internal combustion engine. The solenoid valve (1) generally comprises an electromagnet (2) having a hollow cylindrical magnet housing (3), at least one coil winding (4) and an armature (5) as Well as a first pole shoe (6) and a second pole shoe (7) and further comprises a valve member (8) having a hollow cylindrical valve housing (9) for receiving a spool valve which is displaceable relative to the valve housing (9) by the armature (5) of the electromagnet (2). According to the invention, the electromagnet (2) and the valve member (8) are connected and fixed radially and axially to each other by force locking and/or positive engagement by the second pole shoe (7) of the electromagnet (2) which is arranged adjacent the valve member (8) and configured as a plug-in lock for the valve housing (9).

Abstract: A hydraulic camshaft-adjusting device of the rotary piston type having a drive gear (2) and an impeller. The drive gear (2) has a cavity formed from a perimeter wall and two side walls (5, 6) inside of which at least one hydraulic working chamber is formed from at least two boundary walls (8). The impeller has a wheel hub (10) with at least one vane that extends into a working chamber, dividing the chamber into two associated hydraulic pressure chambers. The pressure medium feed to and from the pressure chambers is done using a pressure medium tap (16) on the side facing a camshaft as well as using pressure medium channels (17) incorporated into the axial sides (14, 15) of the wheel hub (10) of the impeller, which are connected to the pressure medium tap through a pressure medium distributor (20). The pressure medium tap (16) and the pressure medium distributor (20) are encircled at the head (19) and the outer surface (21) by a respective penetration (22, 23) in the side walls (5, 6) of the drive gear (2).

Abstract: An engageable cam follower (1) for acting on a pushrod in the valve train of an internal combustion engine is provided. This cam follower (1) includes of a thin-walled hollow cylindrical housing (2) in whose borehole (3) is positioned an internal element (4) axially movable with respect to the housing (2). The housing (2) and the internal element (4) each possess a radial borehole (13, 10) aligned in a relative position to each other. Positioned in the radial borehole (10) of the internal element (4) is a piston (11) having a convex end (14) and movable toward the radial borehole (13) of the housing (2) for coupling the internal element (4) with the housing (2) in the relative position. According to the invention, the borehole (3) ofthe housing (2) is shaped in the area ofthe radial borehole (13) of the housing (2) as a flattening (15) extending in the longitudinal direction of the cam follower (1).

Abstract: A radial-axial bearing assembly made up of a radial cylinder roller bearing (1) and a thrust cylinder roller bearing (2) characterized in that a radially inwards directed flange (10) of an outer ring (3) of the radial cylinder roller bearing (1) is arranged between the radial cylinder roller bearing (1) and the thrust cylinder roller bearing (2) and thus defines a first raceway (19) for the thrust cylinder roller bearing (2), a first bearing washer (16) is arranged between two cylinder roller crown rings (12, 13) of the thrust cylinder rcller bearing (2) and defines a second and a third raceway (20, 21) for the thrust cylinder roller bearing (2) while a second bearing washer (17) defines a fourth raceway (22) therefor, said second bearing washer (17) being connected to the outer ring (3) of the radial cylinder roller bearing (1) by fixing screws (18) whereby a self-retaining combined radial-axial bearing is formed whose pre-stress can be adjusted by the manufacturer through the axial dimension of the first be

Abstract: An oscillating bearing arrangement, for axial piston pumps (1) of a wobble plate type, comprises a shaft (6) connected for rotation about its longitudinal axis (13) to a wobble plate, the shaft (6) being coupled with a shaft bearing (3) arranged in a housing (4) and comprises an inner ring (15) and an outer ring (16), and oscillating driven elements (14) being spring-suspended against the wobble plate characterized in that the wobble plate (23) which is substantially trapezoidal-shaped in longitudinal section is arranged concentrically in a reception bore of the inner ring (15) of the shaft (3).

Abstract: The sealing arrangement for a bearing bushing includes a reinforced seal (2) which is arranged in force-fitting manner against the inner wall (4) of the bearing bushing (1). The reinforcement (3) of the seal (2) forms a radially inwardly directed arm (14) for attachment of a rotary shaft seal (8) which is disposed between the arm (14) and the rolling bodies (7). The seal (2) is further provided with a sealing lip (15) which faces away from the rotary shaft seal (8) and is supported by a sealing element (5). The sealing element (5) assumes the function of a protective cap and of anterior seal and includes a reinforcement ring (16) having an arm (17) circumscribing an end zone (19) of the bearing bushing (1). A radially inwardly directed flange (18) of the reinforcement ring (16) is rubberized on an end face. The rubber packing (22) further circumscribes the free end of the flange (18) and is secured in fixed rotative engagement to the pin (6).

Abstract: A torque-transmitting linear rolling bearing (16) comprises ball circuits (24) which are formed in a cage (18) between an inner profiled element (17) and an outer profiled element (19), and rolling elements (22) travelling through a first guide track (24a) are elastically biased by a spring sheet (23).

Abstract: An engageable cam follower (1) for acting on a pushrod in the valve train of an internal combustion engine is provided. This cam follower (1) includes of a thin-walled hollow cylindrical housing (2) in whose borehole (3) is positioned an internal element (4) axially movable with respect to the housing (2). The housing (2) and the internal element (4) each possess a radial borehole (13, 10) aligned in a relative position to each other. Positioned in the radial borehole (10) of the internal element (4) is a piston (11) having a convex end (14) and movable toward the radial borehole (13) of the housing (2) for coupling the internal element (4) with the housing (2) in the relative position. According to the invention, the borehole (3) of the housing (2) is shaped in the area of the radial borehole (13) of the housing (2) as a flattening (15) extending in the longitudinal direction of the cam follower (1).

Abstract: A simply constructed and easy-to-produce nozzle valve (1) for oil spraying of pistons in internal combustion engines is provided. The nozzle valve (1) is formed from a thin-walled sheet-metal housing (2), a nozzle (12), a valve body (8), and spring means (10) for the valve body (8). The spring means (10) act at one end directly against the valve body (8) and rest at their other end against a support (11) extending within the housing (2). This support (11) forms a single structural unit together with the nozzle (12).

Abstract: The invention proposes a lever-type cam follower (1) which, for mounting a pin (7) for a cam roller, comprises bores (5, 6) in the region of its side walls (2, 3). The diameter of the bore (5) is larger than the diameter of the bore (6). Corresponding ends (8, 9) of the pin (7) are configured so that when mounted, the pin (7) is fixed in the bores (5, 6) by a press fit. Thus, the pin (7) can be inserted with its second end (8) at first through the larger bore (5) without causing damage to its raceway (8a) during assembly. At the same time, the press fit guarantees an excellent fixture of the pin (7) in the cam follower (1) with an all-round contact.

Abstract: A brake device for a linear guide comprising a carrier body (1) which is movable on a guide rail (2) and incorporates brake shoes (10) which act on the guide rail (2), and a brake piston (8) which is arranged for displacement by a pressure medium in a brake cylinder (9) of the carrier body (1), the brake device further comprising an energy reservoir in form of a compression spring (11) which acts on the pressure medium that is limited by the brake piston (8), a piston/cylinder assembly is arranged between the compression spring (11) and the brake piston (8), which assembly comprises a unitary control element comprising a displaceable, larger diameter control piston (5) arranged in a control pressure chamber (4) to act on the compression spring (11) and a displaceable, smaller diameter high pressure piston (6) arranged in a high pressure chamber (3) to act on the brake piston (8), a pressure connection (13) for supply of pressure medium into the control pressure chamber (4) being disposed on the carrier body (

Abstract: A chainwheel (1) of a control mechanism of an internal combustion engine, said chainwheel being formed in one part or a plurality of parts from at least one hub (1a), a toothed rim (1c) and a wall (1a) connecting the hub (1a) to the toothed rim (1c), provided with at least one means for the damping of vibrations and noises which consists of a noise-damping material.

Abstract: A method of making a formed body from iron alloys, in particular a cage for use in a radial roller bearing, axial roller bearing or linear roller bearing, includes the steps of treating a metal strip by heat treatment or thermochemical treatment for providing the metal strip with desired properties with respect to hardness, strength and wear resistance, and punching a plurality of spaced slots into the metal strip for formation of pockets for receiving rolling elements.

Abstract: An electromagnetic valve drive (1) is proposed comprising a gas exchange valve (2), an actuator rod (3), an armature (4), a closing magnet (5), an opening magnet (6), a closing spring (7) and an opening spring (8). The valve drive (1) comprises means for establishing an equilibrium between the closing and opening springs (7, 8) which equilibrium is determined by symmetric energies of the closing and opening springs (7, 8) at a half stroke of the armature (4). These means are configured as an axially displaceable support (13) for the closing spring (7) on the cylinder head (11) of the internal combustion engine. The support (13) is made, for example, as a hydraulically lifting annular piston (17).

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 valve drive (1) including of a hydraulic support element (2), a finger lever (18) supported on the support element (2), and a cam (25) of a camshaft (26), is provided with opening mechanisms (27, 28, 29) for the forcible opening of a check valve (14) of the support element (2) during contact of a base circle (&agr;) of the cam on the finger lever (18). The opening mechanisms (27, 28, 29) are formed from a slide extending in a support element, which acts on a closing body (13) of the check valve (14). In addition, they include a separate lever for the slide, where this lever communicates with a signal path on the camshaft (26). By these measures, eccentricity of the base circle (&agr;) or the like no longer lead during a play compensation phase of the support element (2) to an undesired hardening of a high pressure chamber (12) of the support element (2).