Abstract: A method for installing a flange on the end of a tubular member lined with a thermoplastic liner is provided. The flange is formed with a groove having extrusion openings extending from the front to the rear surface of the flange, the groove for receiving the reformed end of the liner which is forced into the extrusion openings and extends above the front surface of the flange to provide a surface for securing with a corresponding flange.

Abstract: A clamping roller overrunning clutch, each of whose clamping rollers (4) is urged against clamping tracks (5) by at least one arc-shaped spring element, preferably a leaf spring (6), whose arc ends (11) are suspended against the clamping rollers (4) whereby a proper spring loading of the clamping rollers (4) is assured by the fact that a support surface (10) for the arc-shaped spring element (6) extending between the arc ends (11) is made so that a support contact (A, A′, A″) between the support surface (10) and the arc-shaped spring element (6) migrates toward the arc ends (11) of the arc-shaped spring element (6) with increasing load and a method of making the said clutch.

Abstract: A device for converting a rotary motion into an axial motion has a threaded spindle (1), a nut concentrically surrounding the threaded spindle with a clearance and a plurality of axially parallel rollers (2) guided in a cage (6) and arranged in the clearance, said rollers (2) have a circumferential profile by which they mesh with the external thread of the threaded spindle (1) and with the corresponding internal thread of the nut. Each of these rollers (2) is axially displaceable within the cage (6) by the dimension of the thread pitch during a rotation of the nut relative to the threaded spindle (1), while at the end of such a rotation, each roller (2) is re-displaceable within an axial groove (7) of the nut into the starting position by a cam (8, 12) arranged in the vicinity of each end face of the cage (6). According to the invention, the nut is a thin-walled sheet metal sleeve (3) made by non-chipping shaping. In this way, a device with a simpler structure and more economic to manufacture is obtained.

Abstract: An internal sealing of a vane-type adjusting device comprising a drive pinion (2) connected to a crankshaft of an internal combustion engine by a toothed belt or a timing chain and has a hollow space (9) into which a winged wheel (13) is inserted and rotationally fixed to a camshaft of an internal combustion engine, the drive pinion (2) comprising on the inner surface of its circumferential wall (3) at least one working chamber (5), and the wings of the winged wheel (13) divide each working chamber (5) into two pressure chambers (10, 11) and to avoid pressure medium leakage between the pressure chambers (10, 11) of each working chamber (5) and between the individual working chambers (5), each wing of the winged wheel (13) is configured as a separate wing segment (18) which is displaceable within a guide (15) in the winged wheel (13) and is sealed leak-tight radially by the radial centrifugal force which results from the rotation of the vane-type adjusting device (1) during engine operation, and axially by at

Abstract: A switchable cam follower (1) for a valve train (1b) of an internal combustion engine (1c) which is indirectly actuatable via tappet push rods (1a), the cam follower (1) comprising an outer section (2) which encloses an inner section (4) that is axially movable relative thereto, the outer section (2) having a pot-shaped configuration with a bottom (6) which comprises an end (5) for cam contact and separates the inner section (4) from a cam (4a) whereby upon coupling of the sections (2, 4) by a coupling means (23), a high lift of a gas exchange valve (22a) is effected, and upon uncoupling of the sections (2, 4), a zero lift, the cam follower (1) having a relatively simple structure with only a small design space requirement and can be installed in receptions (20a) of the internal combustion engine (1c) as provided hitherto for non-switchable cam followers.

Abstract: A play-free radial ball bearing in which the inner bearing ring is constructed in two parts, whereby at least one of the two bearing ring elements (4, 5) is axially and radially movable and the bearing outer ring (6, 23, 25) has a race (2) with a radius that is clearly larger that the radius of the bearing balls (1). Due to the significantly greater osculation of the outer race (2) in comparison to the bearing balls (1), a restricted tipping of the shaft with, at the same time, freedom from play in the bearing, is made possible in connection with the two part movable inner ring.

Abstract: A device for tensioning a traction mechanism, preferably a chain, which includes a traction wheel, preferably a sprocket (1), rotatably mounted on a hollow axle (3). Within the hollow axle (3), a hollow piston element (5, 6) is arranged, which is biased against the hollow axle (3) using a spring element, preferably a coil spring (12). The piston element (5, 6) is arranged in a piston chamber (4) such that the longitudinal axis of the piston element (5, 6) is arranged perpendicular to the traction wheel axis. In the inner space (7) of the piston element (6), motor oil is preferably provided for hydraulic damping of the piston element (6).

Abstract: The invention relates to an indexing gear (21) for a synchronizing device (1) for a geared speed change transmission installed in motor vehicles to which a coupling body (22) as well as a friction ring (23) are allocated. In accordance with the invention, the indexing gear (21), the coupling body (22) as well as the friction ring (23) are constructed as component parts which can be prefabricated, which are joined in a rotatably fixed manner.

Abstract: An operating lever for a valve train of an internal combustion engine comprises, on the valve-proximate end, a sliding shoe arranged between itself and an end of a valve stem of a gas exchange valve.The operating lever is characterized in that it is configured as a chiplessly shaped sheet metal part and comprises in the valve-proximate region (2), a bottom wall (12) which is connected in an upwardly open U-shape to two side walls (5, 6), the bottom wall (12) comprises a downwardly open recess (13) for receiving the sliding shoe (14) which is inseparably retained in the recess (13), and spatial dimensions of the sliding shoe (14) and the recess (13) are matched to each other so that the sliding shoe (14) can freely execute a pivoting movement in the recess (13) caused by a displacement of the valve stem (11).

Abstract: An axial piston machine, in particular an axial piston pump of a high-pressure cleaning device, includes a wobble drive having a wobble member rotatable about an axis of rotation, and a swash plate rotatably supported by the wobble member and extending at an inclination with respect to the axis of rotation. The swash plate interacts on one end face thereof with at least one piston. For simplification of the assembly of an axial piston machine, the wobble member is so configured as to have a conical portion flared in the direction of the swash plate and formed with a ball race for a ball bearing.

Abstract: An apparatus for manufacturing a liner for installation in an existing conduit in reduced form. The apparatus includes an extruder for extruding heated thermoplastic pipe material through a die to form a tubular shape, a shaping station for shaping the extruded tubular plastic material to the reduced form, a cooling station to cool the liner so that the liner maintains the reduced form and a reheating station to render the liner pliable to be put in suitable form for storage. The liner may be spooled on itself in a layered condition or on a solid spool.

Abstract: A tappet (1) comprises an annular section (2) which concentrically surrounds a circular section (5). The two sections (2, 5) can be loaded by cams (4, 7) of different lift and be coupled to each other when desired by radially displaceable sliders (11, 14). To avoid switching errors, the slider (11) extending in the annular section (2) can be selectively prevented from being displaced by a piston (26) which comprises a control edge (28) and is displaceable in the longitudinal direction of the tappet (1). For this purpose, the piston (26) cooperates with a groove (29) of a cam (4) starting from a second part (.beta.) of the base circle of the cam. During this part (.beta.) of the base circle, the piston (26) can be displaced by hydraulic medium pressure in cam direction into the groove (29) so that it extends with its control edge (28) in an annular groove (30 or 31) of the first slider (11) and thus locks this slider (11) out of its desired displacement phases.

Abstract: The invention relates to a radial bearing assembly for a drive shaft of vehicles which connects a transmission (2) with a driven front wheel (5), with a laterally sealed radial bearing (11a) received in a holder (15) which is securely fixed in place on the side of an internal combustion engine for supporting the drive halfshaft (7). In accordance with the invention, a drive shaft (7) in the form of a hollow shaft is provided, with an inner ring (12a) of the radial bearing (11a) being formed from a sheet metal band in a non-cutting fashion. The radial bearing (11a) is received via a spherically shaped outer surface area (14) of an outer ring (13a) in an oriented position in the holder (15) which is assembled from flanges (16, 17).

Abstract: A head rest (35) for a vehicle seat is vertically adjustable relative to a back rest (36) of the vehicle seat. The head rest (35) is fixed on supporting rods (37, 38) which are longitudinally displaceable in a fixed reception (40) arranged in the back rest (36). A clamping element (10) locks the head rest (35) in a defined position relative to the reception. According to the invention, the supporting rods (37 and 38) are prevented from being pushed inwards during an accident by the fact that the locking element (10) is configured as an overrunning clutch(22, 16, 26) acting in a linear direction of movement which, in a locked position, prevents at least one (38) of the supporting rods from being pushed into the reception (40), and the locking element can be locked and unlocked by an actuating element.

Abstract: A cam follower is provided having a thin-walled ring fixed in the bore of the shaft to extend across a parting plane between the shaft and the support. The ring includes a radially inwardly directed collar having a bore or an internal thread which is mated to a corresponding thread of a threaded fastener. Due to the fact that the collar or the internal thread is arranged in the region of an edge of the securing ring remote from the cylinder head, the threaded fastener has an adequate axial mobility in the pre-assembled state. This freedom of movement enables excellent handling during final assembly.

Abstract: In a tappet (1) of a valve train of an internal combustion engine, the leakage of hydraulic medium occurring between its reception bore (6) and skirt (2) is to be reduced. To achieve this, the tappet (1) of the invention comprises an anti-rotation device (22) and, at the same time, a supply of hydraulic medium from a supply gallery (21) to an annular oil reservoir (17) is effected directly, i.e. annular grooves and other oil deflecting measures are dispensed with. An aperture (19) in the skirt (2) for the supply of hydraulic medium can, at the same time, be advantageously arranged in a bottom-proximate region thereof.

Abstract: A hydraulic clearance compensation element actuated by a cam of a camshaft and adapted for use with a valve drive, includes a casing closed on one end by a bottom which bears upon one end of a gas exchange valve, a pressure piston so received in the interior of the casing that a leakage gap for hydraulic fluid is formed between an outer surface area of the pressure piston and an adjacent side wall of the casing for enabling the clearance compensating function. The pressure piston and the casing are movable relative to one another in axial direction, with a high pressure chamber being defined between the bottom and a confronting end face of the pressure piston for receiving a hydraulic fluid.

Abstract: An apparatus for converting a rotational movement into a rectilinear movement includes a threaded spindle, a nut (8) which surrounds the latter concentrically at a spacing, and a number of rolling bodies which are disposed in the spacing and roll on the track-forming outer thread of the threaded spindle as well as on the corresponding track (4) forming inner thread of the nut (8). The rolling bodies are guided by a cage (9) which includes slot-shaped pockets (11) disposed sequentially at spacings in the circumferential direction for receiving the rolling bodies, whereby, during a rotation of the nut (8) relative to the threaded spindle, each rolling body is axially displaceable by the amount of the threaded pitch inside the cage (9). At the conclusion of this rotation inside an axial groove (13) in the nut (8), the rolling body can be returned to its initial position by a cam (15) disposed in the vicinity of an end face of the cage (9).

Abstract: Two race washers (3 and 4) of a thrust rolling bearing comprise on a peripheral edge two collars (5 and 6) directed towards each other so that an annular gap (7) is formed. The rim (8) of the cage (2) is guided in this annular gap (7).

Abstract: A rolling bearing (5) which is used for the clearance-free and noiseless mounting of a shaft (2) of a converter in an automatic transmission comprises at least one race ring which is composed of two ring elements (11, 12) which define a gap (14) filled with fluid between themselves.According to the invention, the first ring element (11) is configured as a thin-walled bushing whose raceway (10) comprises, in at least one peripheral section, an elastically yielding raceway convexity (13) deviating from its circular shape so that at least one of the rolling elements (6) is pre-stressed between the raceway convexity (13) and a raceway (9) situated opposite thereto.