Abstract: An overrunning clutch comprising two concentric machine components (1,2) rotatable relative to each other and having locking surfaces (13,14) formed on their mutually facing peripheral surfaces, and, arranged therebetween, a plastic cage (4) comprising end rings (15) connected to each other by crossbars (16), pockets (17) for locking elements (3) spring-urged against the locking surfaces (13,14) being formed between circumferentially adjacent crossbars (16), the plastic cage (4) further comprising at least one radial projection (19) which engages into a recess (20) of one of the machine components (2) to prevent rotation of the plastic cage (4) relative to this machine component (2), characterized in that the radial projection (19) is arranged on a crossbar (16).

Abstract: A device (1) for adjusting valve timing in an internal combustion engine, disposed within a control gear of at least one camshaft on a drive pinion (3) which is in driving relationship with this camshaft, said device (1) comprising an adjusting piston (2) which is axially displaceable by a hydraulic medium and whose first and second end faces (11,12) delimit a first and a second pressure chambers (13,14) while a peripheral surface (15) of the adjusting piston (2) bears sealingly against a housing (16) which delimits the first and the second pressure chambers (13,14) radially outwards, the adjusting piston (2) comprising two oppositely oriented helical gear sections, (6,7) and first (6) of said two helical gear sections cooperates with a corresponding gear (5) of a driving element (4) connected to the drive pinion (3), while second (7) of said two helical gear sections cooperates with a gear (8) of a driven element (9) connected to the camshaft, a stop element (18,19) or an end portion of the housing being arr

Abstract: A roller lever (1) of a casting material configured as a finger lever for a valve drive of an internal combustion engine and comprising a first end portion (2) and a second end portion (4) connected to each other by side walls (7, 8) whose central portions (6) define a free space (9) in which a rotatably mounted supporting roller (10) is guided, said side walls (7, 8) comprising, in a region of the supporting roller (10), circular ring-shaped running surfaces (13, 14) facing the free space (9), the roller lever (1) further comprising a mold parting line (15) resulting from manufacture in a casting mold having a mold parting, characterized in that the mold parting line (15) between two halves of the casting mold extends outside of the running surface (13, 14) along a peripheral contour (16) of the running surfaces (13, 14) and a roller lever of a casting material configured as a rocker arm for a valve drive of an internal combustion engine, one end region of the roller lever being a fork-shaped region for rece

Abstract: In a belt or chain tensioner a sliding bearing ring is arranged between an element rigidly connected to the housing and an element rigidly connected to the tension arm. In order to achieve an improved damping, the sliding bearing ring is provided at one place with a through-slot into which engages a projection on one of the two elements. In addition, the sliding bearing ring is preferably provided with at least two, and preferably more, axially oriented grooves which define narrow and flexible lamellae formed between them. The lamellae are inclined with respect to and bear against a facing peripheral surface of one of the two elements in order to obtain a direction-dependent damping, since the lamellae are easily pushed aside in one direction of rotation but are entrained and pushed up into an upright position in the opposite direction of rotation.

Abstract: The invention concerns a radial rolling bearing having cylindrical rolling elements which roll between an inner and an outer ring while individual spacers are disposed between every two adjacent rolling elements, the spacers comprising, on both sides of their central longitudinal plane, contact surfaces while being guided during rotation of the radial rolling bearing by one of their end sections on a raceway of the inner or the outer ring.

Abstract: A sealing arrangement for a bearing bush of a cardan spider of a universal joint of a propeller shaft, in which a bearing journal is mounted on a rolling bearing, said sealing arrangement comprising an armored seal inserted into the bearing bush at a free end thereof and having at least one sealing lip which bears against a surface of the bearing journal under pre-tension, characterized in that the sealing arrangement comprises a seal (1,21) whose armoring (6) assures an axial positional fixing of the seal (1,21) by a positive engagement with an inner surface (8) of the bearing bush (2).

Abstract: A method of leakproof first filling of a hydraulic valve actuating tappet (1) with hydraulic oil,a) comprising almost completely filling the central oil reservoir (7) together with a high pressure chamber (18) situated axially between the bottom (11) of the pressure piston (10) and the guide sleeve (5), and the annular oil reservoir (17), with hydraulic oil, andb) filling at least the supply bore (19) leading to the annular oil reservoir (17), with a lubricating grease or a pasty material (20) which is flow-resistant at ambient temperature.

Abstract: A tappet (1) for a valve drive of an internal combustion engine, characterized in that an upper edge (22) of the cylindrical element (15) extends directly along the underside (8) of the housing bottom (7) except in a region of a trough-like formation (24) provided in the cylindrical element (15) in a region of the underside (8) of the housing bottom (7) for oil transfer from the canal (19) into the annular oil reservoir (18), the ratio of the width of the recess (24) at an upper edge thereof facing the bottom of the width of the canal (19) is .gtoreq.1.75.

Abstract: A process for the thermochemical treatment of thin-walled structural elements made of steel comprising enriching an edge zone of a thin-walled structural element with nitrogen and carbon at 590.degree. to 700.degree. C. to harden the edge zone whereby an intermediate layer (3) is formed in the diffusion zone (2), said intermediate layer comprising 1 to 3% by weight of nitrogen and at most 0.8% by weight of carbon and cooling the said thin-walled structural element under an inert atmosphere at a rate of 50.degree. to 100.degree. C. per minute to room temperature to form a nitrogen austenite and/or braunite phase between the connection layer (1) and the basic structure (4) with increased fatigue strength.

Abstract: A differential gearing comprising a differential case (2) mounted in a gearbox casing (1) and connected via a crown wheel (6) to a drive pinion (4) of a third motion shaft (5), axle shafts (9) being mounted in the differential case (2), characterized in that the axle shafts (9) are mounted in the differential case (2) on a clearance-free or pre-tensioned rolling bearing (11).

Abstract: The invention concerns a device for continuous angular adjustment between at least two shafts, a crankshaft and a camshaft of an internal combustion engine, in driving relationship particularly, comprising an adjusting element (4) which is connected to a shaft to be adjusted while being arranged in an axial direction thereto and comprising a hydraulically actuatable piston (14) which is connected to a pressure medium circuit, characterized in that an end region of the shaft to be adjusted, which can be the camshaft (5) or an intermediate shaft, is surrounded by a fixed connecting plate (8a,8b) which comprises pressure medium ducts (6,7) for pressure medium supply to the adjusting element (4).

Abstract: A planetary transmission comprising a planet carrier (6) connected rotationally fast to a driving shaft (3), a planet gear (7) of which planet carrier (6) is simultaneously in mesh with an annulus (9) fixed on a housing (1,2) and with a sun gear (10) connected rotationally fast to a driven shaft (12) arranged concentric with the driving shaft (3), each of the driving shaft (3) and the driven shaft (12) being mounted for rotation relative to the housing (1,2) on at least one bearing (16,17) and outer and inner rings (22,25 31 34) of said bearings (16,17) being seated on bearing seats (5,14,11,15), characterized in that at least one of two bearing seats (5,14,11,15) of each bearing (16,17) comprises at an axial end thereof, a resilient projection (19,24,27,32) engaging by elastic reverse deformation, an end face of the inner or outer bearing ring (22,25,31,34) seated thereon.

Abstract: A planet carrier (6) of a planetary transmission wherein planet gears (7) in mesh with an annulus (9) and a sun gear (10) are mounted on pins (8) which are guided on both sides of the planet gears (7) in lodgings (15,15a) of disk-shaped carrier elements (13,13a) connected to each other, characterized in that the lodgings (15,15a) are made in the form of pockets opening radially outwards to enable radial insertion of the pins (8).

Abstract: In a guide rail (14) for railborne load carriers comprising a support (13) and at least one running rail (15) arranged in a groove (2) of the support (13), this support (13) is an extruded hollow profile. This results in a simple manufacturing method and a small material requirement.

Abstract: A radial bearing which can be pressurized by a pressure medium and is arranged between two elements of a load-switchable transmission which rotate at different speeds, a hydraulic pressure medium flowing through the radial bearing causing engagement of a multiplate clutch, and radial sealing rings (10,11) being arranged between the two elements of said transmission in a region of the radial bearing on each side of a pressure medium passage, characterized in that the radial bearing is configured as a rolling bearing whose rolling elements (7,8) are bearing needles guided in a cage (9) which comprises several preferably circumferentially uniformly spaced radial through-apertures (20).

Abstract: A hydraulically actuatable device (1) for disengaging a gearshift clutch of an automotive vehicle, having an annular piston (4) arranged for sliding displacement with its inner peripheral surface (9) on a guide sleeve (6) and its outer peripheral surface (13) in a clutch output cylinder (2), a release bearing (5) positionally fixed by a disc spring (20) being lodged in an end of the annular piston (4) away from a pressure chamber (8), characterized in that, there is arranged on end of the annular piston (4) a fixing ring (12) comprising a cylindrical portion (14) which engages around a part of the outer peripheral surface (13) of the annular piston (4) to which it is fixed by positive engagement, and a radially inwards oriented arm (17) of an inner ring (16) of the release bearing (5) engages into a portion (15,45) of the fixing ring (12) having a U- or L-shaped cross-section and extending beyond end of the annular piston (4), arm (17) of the inner ring (16) being urged by the disc spring (20) supported on a

Abstract: A locking member being provided with a parallel to a side face running primary recess within an internal or external rim surface. This primary recess is dividing the member into a solid supporting portion and a first portion having a side face provided with a locking member, the depth of the recess being such that the member formes one integrated single piece. The side face of the first portion is divided by secondary cuts carried through a central point of symmetry forming a number of sectors corresponding to the number of desired locking members, the secondary cuts at the same time constituting gripping surfaces for tools for the manipulation and use of the member. The locking member also provides internal or external locking to an internal or external threaded but also non-threaded surfaces.

Abstract: A device (3) for adjusting valve timing in an internal combustion engine, disposed on a drive pinion (4) within a control gear of at least one camshaft (2) mounted in a cylinder head (1), which drive pinion (4) is in driving relationship with said camshaft (2), said device (3) comprising an adjusting piston (5) axially displaceable by a hydraulic medium and having two oppositely oriented helical gear sections (6,9), and first of said two helical gear sections (6) cooperates with a corresponding gear (7) of a driving element (8) connected to the drive pinion (4), while second of said two helical gear sections (9) cooperates with a gear (10) of a driven element (11) connected to the camshaft (2), an end region of the camshaft (2) facing the device (3) being circumferentially surrounded by a connecting bracket (14) positioned, as seen in camshaft direction, behind the device (3) and comprising at least one pressure medium connection (19) for hydraulic medium supply to the adjusting piston (5) characterized in th

Abstract: An overrunning clutch assembly inserted between a rotary driving element and a rotary driven element and comprising a locking element overrunning clutch and a radial rolling bearing arranged adjacent to each other with a gap therebetween, an axial securing arrangement provided for the two components of the overrunning clutch assembly comprising rims extending laterally from respective cages of the overrunning clutch assembly and the radial rolling bearing, characterized in that the axial securing (3, 3a to 3f) of the locking element overrunning clutch (2,20) and the radial rolling bearing (15,25) is effected in the gap (14, 14a to 14f).

Abstract: A device for damping torsional vibrations in a drive train of a traction drive connecting an internal combustion piston engine and an auxiliary unit, comprising an overrunning clutch (5,30,48) arranged between a driving pulley (2,25,42) and an input shaft (1) of the auxiliary unit or between a crankshaft and a driven pulley of the internal combustion piston engine, characterized in that the overrunning clutch (5,30,48) comprises an inner or outer ring (8,9,28,29,50) made of sheet metal without chip removal on which locking ramps cooperating with locking rollers (10,30a,48a) are formed, and the inner or outer ring (8,9,28,29,50) extends at least on one side beyond a region of the locking ramps to form a raceway for a rolling bearing (6,7,31,32,45,49).