Abstract: A sliding sleeve for a clutch shifter particularly for automobile clutches comprising an elongated hub body made of a plastic material, a thrust collar which protrudes radially outwardly from the hub body and includes contact surfaces for the shift lever of the clutch and for the shift bearing, at least two lugs secured in the hub body and directed radially inwardly adjacent the bore of the thrust collar, each lug being of generally U-shaped cross section to define a groove for the shift lever extending in an axial direction and a thin plastic layer overlying the side surfaces of the groove receiving the projections of the shift lever in the hub body and the adjacent surfaces of the ends of the lugs directed radially outwardly and running parallel to the contact surfaces.

Abstract: In a method for fixedly mounting a machine element such as a bearing on a smooth shaft, the material of the shaft is displaced by forcing a stamping tool into an outer surface of the shaft, in a direction at an angle to the axis of the shaft.

Abstract: In an antifriction-bearing throwout, particularly for automotive clutches, a clutch bearing with a non-rotating bearing-ring abuts in a radially slidable manner against a thrust plate of a sliding sleeve and is held in the centered position.To facilitate centering of the clutch bearing in relation to the tongue ends of the clutch diaphragm-spring, and to prevent slip-through of the clutch bearing in the case of shock as by hard road-bumps, the non-rotating bearing-ring is arranged in a manner such that, overcoming a radially-acting friction force in relation to sliding sleeve, it can tilt in a circumferential direction, within certain limits, and can slide in a radial direction along two guide-surfaces that run parallel to one another.

Abstract: A tension roller with a supporting member, pivoted on a pivot stud against the force of a tension spring, and rotatably supported in a roller sleeve by a bearing. The supporting member has a cylindrical interior space, limited by side walls, containing the tension spring. The side walls have bores for the pivot studs and recesses for formation of the stopping faces, against which the free ends of the tension spring abut in order to limit the angle of rotation of the tension roller. The member is made of synthetic material, using injection molding techniques. In order to produce this supporting member in an economical manner, additional recesses permitting insertion of a forming tool consisting of two halves are provided in the side walls of the member.

Abstract: Coupling release assembly comprising a sliding sleeve and a coupling bearing having a fixed bearing ring connected with a radially oriented flange of the sliding sleeve and a rotating bearing ring having a contact surface for a coupling lever, a socket of generally U-shaped cross section consisting of two half moon-shaped shells secured to the outer periphery of a flange of the sliding sleeve and the fixed bearing ring and biasing member urging the fixed bearing ring and flange of the sliding sleeve in prestressed contact with the opposing radially inwardly directly sides of the socket member.

Abstract: A clutch release, in particular for an automobile clutch, comprising a sliding sleeve, a clutch release bearing, and a spring ring for enabling self-centering of the bearing. The thrust plate of the sliding sleeve is provided with a plurality of circumferentially distributed flexible projections of L-shaped profile which engage the contact flange of the nonrotating bearing ring such that the nonrotating bearing ring radially slidably abuts the thrust plate. The thrust plate is provided with throughholes arranged underneath the respective projections in order to facilitate the elastic yielding of the projections during the operation of snapping them on the contact flange. The flexible projections fix the axially position of the nonrotating bearing ring while allowing radial play.

Abstract: A rolling bearing unit, in particular a play-adjustable bearing arrangement, comprising a bearing shaft, a housing having a bore, and angular contact ball bearings having outer rings arranged in the housing bore and inner rings arranged on the bearing shaft. The shaft is provided with three annular grooves, a threaded portion, and an axial groove along the threaded portion. A locking ring is arranged in the first annular groove, a first cover is arranged on the shaft and abuts the locking ring, and the inner ring of the first bearing abuts the cover. The adjustment of the bearing play is achieved by adjustably arranging a second cover on the threaded portion of the shaft to abut the inner ring of the other ball bearing. The securing of the second cover against rotation relative to the shaft is achieved by deforming or indenting the boss of the cover to engage the axial groove.

Abstract: An hydraulically actuated clutch release, in particular for automobile clutches, comprising a housing having a cylindrical portion and a flange in which a port for the intake of a pressure medium is incorporated, a cylindrical sleeve, an annular piston having a flange and slidably arranged between the cylindrical sleeve and the cylindrical portion of the housing, thereby forming a pressure medium-admitting chamber, a clutch release bearing having a non-rotating bearing ring, an outer cylindrical sleeve, and a compression ring. The outer cylindrical sleeve comprises two portions of different inner diameter and a bead connecting the portions. One portion fixedly contacts the non-rotating bearing ring and the end face of the annular piston flange, and the other portion covers a portion of the outer sliding surface of the annular piston. The compression spring is arranged between the bead of the outer cylindrical sleeve and the flange of the housing.

Abstract: A cage for ball bearings consists of two side rings connected together by webs, and having ball pockets with ball pockets having curved partial surfaces inside and outside of the pitch circle and displaced from one another in the axial direction. In this arrangement the rubbing between the walls of the cage pockets and the balls is very small and free space is provided for receiving a lubricant. The pocket walls of the cage sections lying in the region of one or the other of the side rings has several radially-overlying zones, with conical surfaces, the conical surfaces being arranged at different inclinations to the bearing axis.

Abstract: A wedge assembly particularly adapted for expanding brakes of motor vehicles including a housing and at least a pair of push rods movably supported in the housing and operatively connected to brake shoes of the brake, the push rods having confronting oppositely inclined faces comprising a wedge member having a pair of oppositely inclined wedge faces complementing the inclined faces of the push rods and at least a roller engaging between the inclined faces of said wedge member and push rods, and a cage for guiding said rollers slidingly movable in a longitudinal direction on said expansion wedge member, said cage having two flank portions extending parallel to the transverse direction having two free flank ends reciprocally directed in the transverse direction and provided with guide means for the rollers, each of said rollers having smooth axial end faces blending at their circumferential edge into a rolling face and said guide means being formed by two radial guide sections on each flank end of the roller ca

Abstract: A tension roller for enabling adjustment of the tightness of a driving belt, comprising a solid support and a bearing press-fit thereon. The solid support has an axially extending mounting bore eccentrically arranged therein and a seating surface formed circumferentially thereon. A plurality of balanced bores are circumferentially distributed in the support in order to obtain a uniform radial elasticity at the seating surface. The balance bores may have a diameter equal to or less than the diameter of the mounting bore. In the latter case, the shortest distance between the balance bore surfaces and the seating surface is equal to the shortest distance between the mounting bore surface and the seating surface. The resultant uniformity of the radial elasticity prevents deformation of the bearing.

Abstract: A wedge mechanism particularly adapted for expanding brakes of motor vehicles including a housing, a wedge member, a pair of push rods displaceably supported in the housing action upon the brake shoes of the brake by opposing displacement in a common perpendicular direction, rollers arranged between one of the two wedge surfaces of the wedge member and a complementary inclined surface of the push rod located opposite it, a cage for the rollers, which in relation to the spreading wedge is movable in longitudinal direction and which in turn has two parallel side portions running in perpendicular direction, with machined openings in them in the direction of the axis of rotation of the rollers for guiding the ends of the rollers facing the side portions, characterized in that both rollers (9) have a face (20,27) at their ends, gradually changing over into their roller surface (21) confronting the inclined wedge surfaces and that the opening in the roller cage (13) is formed by a common recess (16,26) for said rol

Abstract: A bearing arrangement for a driven wheel of a vehicle, comprised of a rolling bearing whose outer ring is provided with a flange for affixing the assembly to a vehicle frame or the like. A wheel hub is provided with a flange for supporting a wheel. A drive joint is provided for driving the hub wheel, and a pin or the like is provided for holding the parts together. The axially engaging end surfaces of the wheel hub and drive joint are provided with engaging teeth for the transmission of torques. In order to interconnect the parts precisely to one another for centering and to ensure their reliable interconnection, the inner ring of the rolling bearing is mounted on the outer surface of the wheel hub and/or the drive joint, and end surfaces of the inner ring abut first shoulder surfaces of the wheel hub and the drive joint. The wheel hub and the drive joint directly abut one another at the end surfaces with are provided with substantially axially extending and intermeshing projections.

Abstract: A roller casing for a pulley is comprised of coaxial ring halves mounted one over the other. The diameter of the running surface can be varied without varying the bearing size by employing corrugations in the circumferential direction, or by providing lateral radially outwardly directed rims on the inner ring part. Alternatively the iner ring may be comprised of two ring halves having their central parts directed toward one another.

Abstract: In a hydraulically operable release arrangement for clutches, especially for vehicle clutches, the release force is transmitted to the plate spring or the like of the clutch by way of a piston, a fixed bearing ring, a multiplicity of rolling bodies, and a rotating bearing ring. The piston is movably arranged in a housing and is biased by a helical spring arranged in a pressure space formed between the piston and the housing. The piston and the housing are each provided with an axial projection. In order to secure the piston against rotation and to damp vibrations in the piston without additional machining or special parts, the helical spring is arranged with its spring ends abutting the axial projections such that rotation of the piston in the direction of rotation of the rotating bearing ring is prevented.

Abstract: Sealing ring for radial rolling bearings with an outer race and an inner race and rolling bodies in the gap between them, consisting of a ring body of elastic material bridging the gap with, at one radial end, at least one sealing lip or the like sliding along a contact surface of the outer race or inner race and with, at its opposite end, a hub section supported on a seating surface of the inner or outer race and a stiffening plate incorporated into the ring body with a radial web section and, in the hub section, a collar section connected to the outer edge of the web section facing the hub, characterized in that the collar section of the stiffening plate is formed both by axially inward-bent and axially outward-bent tabs of the outer edge of the stiffening plate.

Abstract: A hydraulic release arrangement, especially for vehicle clutches, consisting of a housing (1,2,3) with a pressure space (6) sealed by a rolling bellows (7), in which the release bearing (4) is arranged to be displaceable in the housing (1,2,3) in the axial direction.In order to produce a compact hydraulic release arrangement and inhibit the bending in of the rolling bellows (7) in the low pressure range, a spacing element (27) is provided in the space defined by the rolling bellows (7) between the release bearing (4) and the housing (1,2,3), the spacing element being arranged to abut the inside of the bellows wall with axial prestress with an annular projection in at least one turned-back region (30) of the rolling bellows (7).

Abstract: A tension roller for a drive belt is comprised of a two-part pin and a roller rotatably supported on the pin by a rolling bearing. One part of the pin is substantially solid and has a seating surface for receiving the inner ring of the rolling bearing. The other part of the pin is cup-shaped and extends over the seating surface to engage a side surface of the inner ring. An eccentric bore is provided in the pin for mounting the tension roller on a machine frame by means of a mounting screw. The eccentric bore, in the solid portion of the pin, extends to and separates the outer surface of the pin, whereby the mounting screw partially engages the inner ring of the bearing. The arrangement permits the maximum range of tension adjustments for the tension roller.

Abstract: A support for a tension roller is comprised of two cup-shaped sleeves, oriented with their open ends in the same direction, and with an inner one of the cup-shaped sleeves extending into the other of the cup-shaped sleeves. The outer end of the inner cup-shaped sleeve is outwardly flanged, to define a clamp between the flange and the open end of the other cup-shaped sleeve for holding the inner ring of the tension roller bearing. The bottoms of the two cup-shaped sleeves are initially spaced, and are drawn together upon tightening of a mounting screw extending therethrough into a machine frame, in order to clamp the inner bearing ring between the flange and the open end of the other cup-shaped sleeve.

Abstract: An hydraulically operated clutch release has an annular piston hydraulically moveable in an annular chamber. A felt ring is mounted on a shoulder of the piston away from the chamber, to engage the bore surface of the chamber, and a holding ring is snapped onto the end of the shoulder to hold the felt ring on the shoulder. An extension of the holding ring forms a seal with the bore on the chamber, and defines, with the felt ring a dust catching recess.