Abstract: A cage for an overrunning clutch with a metallic outer race accommodating concentrically a metallic inner element and having in a cage arranged between the outer race and the inner element camming elements retained under the action of springs in camming contact with the surfaces of the outer race, on the one hand, and of the inner element, on the other hand, the cage being made of injection moldable or castable polymeric material and having pockets for the camming elements defined by crossbars and at least one end ring connected therewith, at least one circumferential surface of the cage cooperating in the form of a sliding bearing with a cylindrical surface of the adjacent structural part (outer race and/or inner element), characterized in that the cage (1,15,22,30,39) is provided at least in the area of the end ring (4,18,23,33,45) with an annular metallic reinforcement shield (13,19,20,26,27,34,35,47) connected to the cage (1,15,22,30,39) in a form-fitting manner especially through injection-molding around

Abstract: A tensioning device for chain or belt drives comprising a damping piston guided in a cylindrical housing and loaded in the chain tensioning direction by a compression spring located in the housing, wherein a high pressure chamber for hydraulic fluid is situated between the housing bottom and the damping piston and is open via a leakage gap formed by the guide bore of the housing and the damping piston and closed with respect to an oil reservoir by a non-return valve, the hydraulic pressure in the high pressure chamber during the operation of the tensioning device being higher in the cold state than in the heated state due to differences in viscosity, characterized in that the high pressure chamber is delimited by an additional piston acting as an overpressure piston on which a second compression spring acts in the direction of the high pressure chamber, the overpressure piston being able to bear against a fixed stop and the spring force of the second compression spring and the effective surface of the overpre

Abstract: A hydrostatic bearing assembly highly adaptable to different types of applications, with the actual guiding and bearing functions being associated with guiding rails and separate carrying elements comprising separate bearing elements, the separately produced bearing elements having pressure pockets pressurized by a pressure agent, so as to permit a reduction in production costs and a better adaptation to required conditions of play so as to achieve a higher load bearing capacity.

Abstract: An apparatus is proposed for tensioning V-belts, especially for automotive vehicles, said apparatus comprising a length-variable link member (6) for tensioning a pulley against the V-belt. The link member comprises a casing (10) carrying a connection bearing (9), and a piston rod (8) guided within the casing and carrying a further connection bearing (7), and a helical compression spring (18) fixed between a spring rest (19) of the casing and a spring rest (20) of the piston rod.

Abstract: An axial-radial rolling bearing comprising a first row of rolling elements which, for the absorption of axial forces are arranged between plane-parallel raceways of two race discs and a second row of rolling elements which, for the absorption of radial forces are arranged between flanges extending essentially axially and formed at adjacent peripheral edges of the race discs, characterized in that the flanges extend in different axial directions and overlap each other over at least a part of their length, the two rows of rolling elements being arranged radially one above the other substantially in one plane.

Abstract: A tensioning device for belts, chains and the like, particularly for the camshaft drive of an internal combustion engine, the device comprising a tension pulley mounted on a movable carrier and a control element by which, when heating occurs, the carrier can be moved by an actuating member in the slackening direction of the belt against the action of a pressure spring, the control element comprising a hollow cylindrical sleeve and a pressure piston arranged therein for longitudinal displacement on whose part lying outside the sleeve a pressure member with a slanting contact surface forming an acute angle with the piston axis is fitted, the contact surface being in contact with a corresponding contact surface of the carrier of the tension pulley for increasing the working reliability of the control element so that automatic adjustment of a defined belt pretension is effected during operation.

Abstract: An inner bearing ring of a clutch release bearing for an automotive vehicle clutch equipped with diaphragm springs, whereby the clutch release bearing comprises a rolling bearing with two concentric bearing rings arranged on a sliding sleeve between which rings rolling elements roll, and whereby a washer is fixed on the side face of the rotating inner ring which faces the clutch and which during operation acts with the spring finger ends of the diaphragm spring, characterized in that the inner ring (6) is formed from a metal raceway element (9) and an annular element, whereby the annular element forms the circular washer (10) which with its side not facing the clutch is supported on the raceway element (9) and which has an axial extension (12) which is inserted clearance-free into the bore of the metal raceway element (9) and which on its end (13) opposite the washer (10) engages behind the end of the metal raceway element (9) so that the raceway element (9) is retained in a form-locking way on the annular el

Abstract: A rolling-bearing-mounted linear guiding unit comprising a hardened and polished guide rail on which rolling element raceways are formed and a guide carriage longitudinally displaceably mounted on the guide rail and provided with a fixing surface turned away from the guide rail and an inner contour adapted in shape to the profile of the guide rail, rolling elements rolling in endless race canals between the rolling element raceways of the guide rail and surfaces situated opposite to these in the guide carriage and a damping element bveing provided next to the guide carriage and a damping element being provided next to the guide carriage and forming a damping gap with the guide rail, characterized in that the damping element is formed as a saddle engaging around the guide rail, which saddle in respect of the guide rail, has a fixing surface identical to that of the guide carriage, the inner contour of the saddle being adapted for the most part to the profile of the guide rail so that these delimit a damping ga

Abstract: A caterpillar track comprising chain links hinged to one another by bolts, each bolt traversing boreholes of adjacent chain links and being directly supported in the borehole of one chain link while being supported in the other chain link by resilient annular elements made of polymeric material cross-linked with the bolt and frictionally engaging the borehole walls, the improvement comprising supporting the bolt (1) in the boreholes (4) of the other chain link (2) also by at least one rolling bearing (9,16) arranged between adjacent resilient annular elements (5,6).

Abstract: A cage for rolling bearings consisting of individual cage elements provided with rolling element pockets whereby the individual cage elements, at their ends in the region of at least one rolling element pocket have a reduced constructional height where they are placed on one another to overlap in the axial direction and are joined together in this region, characterized by the fact that in the region of the reduced constructional height, cut-outs and lugs are provided which engage with one another in a form fit when these regions are placed on one another and made to overlap.

Abstract: A drive decoupling apparatus for a drive mechanism including a drive shaft, clutch release mechanism, driven mechanism, and diaphragm spring associated with the driven mechanism, premanufactured in a single unit, sub-assembly form such as a cartridge. The design facilitates assembly of the mechanism in a sealed cartridge form in the relatively clean surroundings of a bearing assembly plant, such that the sealed cartridge sub-assembly may be easily installed at an automobile assembly factory at the time of installation of the other drive train components.

Abstract: A unitary, axially self-locating needle bearing which may be of the drawn shell type has an inner race having a crimped flange projecting radially outwardly from the inner race, an outer race having a flange projecting radially inwardly at either end of the outer race, and a plurality of needle rollers held in a cage contained between the drawn inner race and the drawn outer race. The flange on the inner race axially located the inner race with respect to the outer race. The crimp forms a radially outwardly projecting flange on the inner race positioned between one end of the caged needle rollers and one of the inwardly projecting flanges of the outer race. The other inwardly projecting flange of the outer race is positioned at the other end of the caged needle rollers.

Abstract: A roller bearing cage for cylindrical rollers comprising two parallel end rings (1) connected by a plurality of crossbars (2) distributed over the circumference of the cage to form pockets (3) for accommodating two adjacent rollers (4) in each pocket, the crossbars (2) being provided with holding projections (5) in the area of their inner and outer border edges projecting into the pockets (3), the cage being made of a flat sheet metal strip rolled into a round shape and welded at the abutment point (6) where the ends of the strip meet in the area of a pocket (7) being dimensioned to accommodate a single roller (4).

Abstract: A self-adjusting hydraulic valve tappet arranged in a guide bore of a cylinder head of an internal combustion engine and against one end face of which a control cam abuts and which on the other side bears against the end of a valve stem with its second end face, the valve tappet comprising a cup-shaped housing consisting of a hollow cylindrical wall closed at one end by a bottom against which the control cam abuts from outside and which is provided with a cylindrical guide sleeve concentric with the hollow cylindrical wall and extending at one end towards the bottom and at the other into the center of a disk member which with its outer periphery merges into the hollow cylindrical wall of the housing whereby between the hollow cylindrical wall and the cylindrical guide sleeve an annular oil reservoir supplied with oil through a bore leading to the out-side is defined, the actual hydraulic clearance compensation element being guided longitudinally displaceably in the guide sleeve and formed by an inner piston a

Abstract: Apparatus for applying an optimum tensioning force to an endless belt or the like, including a first pivot axis, a belt engaging pulley eccentrically supported for rotation about a second axis displaced from the first pivot axis, a torsional biasing spring for urging the belt-engaging pulley into belt-tensioning engagement with the belt and for automatically maintaining the tension force applied to belt. The torsion spring is disposed about the first axis within the eccentric pulley, which includes further springs for releaseably gripping the pivot to adjustably limit the applied tensioning force in a first direction and in a second direction, whereby the tension in the belt is optimally maintained throughout the engine operating temperature cycle.

Abstract: A method of producing a structural element comprising a metallic sleeve provided with a continuous axial slot at a circumferential area and an outer surface completely surrounded by a jacket comprising making a metallic sleeve (3,18) with an inner diameter corresponding to a maximum of the inner diameter of the finished structural element (1,16) surrounding the said sleeve with the jacket (4,17) in an apparatus (5) provided with a core (8) for receiving the metallic sleeve (3,18) and elastically widening the metallic sleeve (3,18) when placed on the core (8) whereby the slot (2,19) of the metallic sleeve (3,18) is at least partially filled with the material of the jacket (4,17) during formation of the jacket (4,17) so that the boundary surfaces of the slot (2,19) of the metallic sleeve (3,18) is at least partially covered and the structural element producted thereby.

Abstract: A one-piece synthetic plastic cage for retention of clamping rollers in an overrunning roller clutch has two spaced-apart coaxial rims, axially parallel bars extending between the rims and defining roller pockets, and a discrete leaf spring for each bar. The springs are integral with one of the rims and are located radially outwardly of the corresponding bars so that they can bypass such bars by moving in the circumferential direction of the rims. One leg of each spring is integral with the one rim, and the other leg is integral with the one leg and has a free end which bears against the clamping roller in the corresponding pocket.

Abstract: A release bearing assembly for a push type motor vehicle clutch, one side of which is acted upon by a clutch lever via a housing of the release bearing and against the other side of which clutch disk springs are arranged whereby the housing is axially displaceable along a guiding tube characterized in that the housing is provided with an axially displaceable sleeve, a pressure spring acts between a contact surface of the housing and a collar of the sliding sleeve and in the engaged state of the clutch, the sliding sleeve abuts against a stop face which causes the pressure spring to press the release bearing via the housing concentrically against the clutch disk springs.

Abstract: A tensioning device for belts, chains and the like particularly for the camshaft drive of an internal combustion engine, with a tension pulley supported on a movable carrier, with a control element, by which in the case of heating, the carrier can be moved via an actuating element against the action of a pressure spring in the slackening direction of the belt characterized in that, the control element consists of a hollow cylindrical sleeve closed at the one end by a bottom and on the other end has a flange extending radially inwards, against which from the inside a washer abuts, which in its center receives a longitudinally movable and sealed pressure piston, in the annular hollow space between the bore of the sleeve and the pressure piston, the pressure spring is arranged whereby it is supported on one hand on the washer and on the other hand on the pressure piston, between the bottom and the pressure piston, whose end face is at a distance from the bottom, a further pressure spring is arranged which with l

Abstract: A method of producing a hardened non-magnetizable roller bearing element made of an austenitic material comprising carburizing the near-surface material layer of a roller bearing element in an oxygen-free atmosphere at high temperatures and then cooling the roller bearing element and the element produced by the process having a load bearing capacity equal to steel roller bearing elements but still non-magnetizable.