Abstract: A locking pin, in particular for the securing of shift positions of a shift linkage in automobile transmissions, comprises a hollow cylindrical shaft portion (1) which is drawn from thin-walled sheet metal and closed at one end by a bottom (2). This bottom (2) projects radially beyond the shaft portion (1). A locking element (3) projecting out of the shaft portion (1) at the open end thereof is guided longitudinally displaceable in the shaft portion (1), retained secure against loss und pre-tensioned in the locking direction by a spring (4). To obtain a locking pin which is cost-effective in manufacturing and easily dismountable, a diameter enlargement (7) serving as a stop is provided at a pre-determined distance both from the open end of the shaft portion (1) and from the bottom (2).

Abstract: The present invention comprises a spacer, especially a spacer for use with a thrust roller bearing assembly. An internal radial lip projecting into the central aperture of the spacer provides for frictional retention on a shaft passing therethrough. Where the thrust bearing and spacer combination is to be installed in a bore, one or more external radial lips may be included to frictionally retain the spacer within the bore. The spacer element is adapted for coupling to one of the bearing elements. In one embodiment, the bearing and spacer may be bonded together. In another embodiment, the spacer and bearing are joined by mutually engageable circumferential locking surfaces. The spacer is selected from a plurality of spacers of differing axial dimension, each spacer being color coded according to its axial dimension.

Abstract: In a tightening device for a drive belt in an internal combustion engine, particularly for a toothed belt in the camshaft gear with a tension roller supported on a pivoting lever comprising a tension spring acting upon the pivoting lever in the direction of tension and a blocking device opposing the motion of the pivoting lever, whose blocking element changes its position as a function of the temperature, the blocking element formed as an end stop by the free end (17) of a preferably plate shaped stop body (18) whose other end (19) is held in a fixed housing (1) wherein the end stop in the operating state of the internal combustion engine is disposed at a distance from the adjacent support face of the pivoting lever. The tightening device with the thermally adjustable end stop avoids a tooth jump, particularly in the case of long belts.

Abstract: A mechanical valve tappet arranged in a guide bore of a cylinder head of an internal combustion engine, which valve tappet comprises a cup-shaped housing with a hollow cylindrical wall (1) closed at one end by a bottom (2) against which a control cam runs from the outside while an adjusting element (5) bears against the inner surface of the bottom by a first flat end face and is in contact with the end of a valve stem of a two-way gas valve by a second end face which is parallel to said first end face, characterized in that the adjusting element (5) is a solid component with a cylindrical outer peripheral surface and parallel end faces, projections being provided on the cup-shaped housing to cooperate with the cylindrical outer peripheral surface of the adjusting element so that the adjusting element (5) is retained by interlocking or by force engagement on the cup-shaped housing.

Abstract: In an assembly for simultaneously actuating two valves (2) of an internal combustion engine, comprising a beam-shaped bridge (6) in end regions whereof hydraulic lash adjusters (5) are lodged which engage stem ends of valves (2), the bridge (6) being guided parallel to longitudinal axes of the valves (2) in the cylinder heade (1), and valve actuating components engaging a central region of the bridge (6) between the two lash adjusters (5), a less complicated structure as compared to known constructions and thus also less design space requirement with, at the same time, reduced friction, are obtained by the fact that a rotatably mounted roller (8) adapted to be engaged directly by a control cam (10) is arranged at the center of the bridge (6).

Abstract: A method for manufacturing a cage of a polymeric material for a radial rolling bearing with two end rings formed at the cage and arranged at a distance to each other in the axial direction and crossbars spaced behind one another in the peripheral direction connecting the end rings and forming pockets for receiving rolling elements, each crossbar being formed by two relatively thin-walled crossbar walls delimiting the neighboring pockets and a connecting section situated between the crossbar walls, and a device for executing the method.

Abstract: A pre-adjustable, spring-loadable tensioner for belts or chains, in particular for a control gear of an internal combustion engine, comprising a tension roller (2) mounted on a tension roller support (3) of eccentric configuration which in turn is guided on an eccentric inner component which can be screwed onto a housing (20), the tensioner (1) further comprising a spring (12, 29) resiliently urging the tension roller support (3) against the housing (20), characterized in that the inner component comprises a flanged eccentric bush (5) which engages freely rotatable into a base plate (7) which is guided by a radial guide arm (9) on the housing (20).

Abstract: A friction device, in particular for belt tensioners for driving auxiliary units of internal combustion engines, comprising a housing (1), a pressure disk (17, 20, 21) and arranged therebetween, a friction disk (19), the pressure disk (17, 20, 21) and the friction disk (19) being rotatable with respect to each other and an axial force acting between the pressure disk (17, 20, 21) and the housing (1) via the friction disk (19), characterized in that at least one end face of the friction disk (19) is in contact with a protruding (convex) support surface (22, 23) extending towards it.

Abstract: An eccentric anti-friction drive for fluid power apparatus is disclosed wherein the eccentric element comprises a tubular cup or sleeve made by deep drawing a hardenable steel material. The eccentric element comprises two cylindrical peripheries disposed eccentrically with respect to one another. One of the cylindrical peripheries is fitted to the rotating member of a prime mover and the other cylindrical periphery comprises the inner or outer race of an anti-friction bearing of the anti-friction drive.

Abstract: A linear bearing with revolving roller elements has a carrier body on which a closed track is formed, the runner elements moving on this track, which comprises a load track, a return track, and two substantially U-shaped roller element deflection tracks. Lateral guide means are provided for the roller elements: the guide means have homogeneous lateral guide walls for the roller elements and are formed to be step-free and continuous over the length of the load track and over at least part of the adjacent deflection tracks.

Abstract: A speed changing device for a gear box, particularly for a toothed change speed gear of a motor vehicle in which a gear wheel, freely rotatable on a driven shaft can be coupled with the driven shaft by means of an axially displaceable claw ring and a toothed bushing, the claw ring being axially displaceable by an electric driving device via a gearshift fork, arranged on a selector shaft which is parallel to the driven shaft, characterized in that the gearshift fork is axially displacable on the associated stationary selector shaft by a spindle drive comprising an externally threaded section arranged on the selector shaft and an internally threaded section, the axes of both threaded sections being arranged on the axis (D.sub.1), of the selector shaft and one of the threaded sections being actuatable by rotation by an electromotor.

Abstract: A rolling bearing, in particular for steering columns of automotive vehicles, comprising rolling elements in the form of balls arranged between an inner ring and another ring, and a tolerance ring made of a polymeric material which is at least partially surrounded by the inner ring and is pressed axially against the inner ring in the direction of the balls by a spring, characterized in that the spring (7, 17) is made of a polymeric material.

Abstract: A rolling bearing arrangement for a conical crusher in which a vertically arranged driving element is rotatably mounted on a base and a crushing cone is mounted inclined with respect to the vertical on the upper end of the driving element so as to be freely rotatable, characterized in that the rolling bearing arrangement comprises a single common hollow cylindrical outer part in which two inner rings situated axially behind each other are supported on rolling elements, the outer part being part of the driving element and the first inner ring being connected with the base whereas the second inner ring, which is arranged inclined and eccentrically offset with regard to the first inner ring, carries the crushing cone.

Abstract: Wiper unit for a bearing element, preferably a rolling bearing element, which is slidably mounted on the running surface of a shaped part and at least one of its front ends comprising a wiper blade retained by a supporting plate and whose one end region is in contact with the running surface for cleaning the same, characterized in that the wiper blade (5) comprises several flexible tongues (9 to 11) which lie in one comon plane before the mounting of the wiper unit on the bearing element (1) and whose ends are in resilient contact with respective sections of the running surface of the shaped part (2) in the assembled state.

Abstract: The present invention relates to a method and an apparatus for biological purification of wastewater with no excess activated sludge by subjecting a machanically and/or chemically pretreated wastewater to the conditions of total endogenous respiration at aeration with one or more surface turbine type aerators of 5.10.sup.-2 to 12.10.sup.0.2 kW/m.sup.3 of wastewater, at a microorganism to food ratio of 20 to 100. The height of the liquid level in the basin is at least 5 m. There is provided a high-grade effluent at low capital and operational investment.

Abstract: A light metal tappet particularly for the timing gear of an internal combustion engine comprising a tappet base body and a steel plate anchored at the contact face for the control cams of the timing gear and having a hardened surface, characterized in that the steel plate is made of an austenitic base material which is carbon dispersion hardened, has the same coefficient of thermal expansion as aluminium and comprises a nitrided surface.

Abstract: A rolling element cage made particularly of polymeric material in which rolling elements are guided in pockets and which is split at at least one point of its periphery, the cage ends delimiting the separating gap being formed by crossbars which comprise projections and corresponding recesses which fix these cage ends at least in the axial direction by interlocking, characterized in that the recesses in the crossbar forming the respective cage end extend into the adjacent pocket and, when the separating gap is closed, the projections projecting into the recesses extend at the most upto the delimiting surface of the pocket facing the cage end.

Abstract: An anti-friction bearing assembly having an integrally formed oil feed nozzle especially for use in automotive manual transmissions is disclosed. The oil feed nozzle may be formed as part of the outer race of a shell bearing or as part of the cage of a shell bearing. The nozzle directs oil from a reservoir into the axial bore of a shaft for supplying lubricant to cross bores in the shaft. Vanes may be provided on the nozzle formed integrally with the cage so that when the cage rotates the vanes pump the oil through the nozzle and the shaft bore.

Abstract: A control device for a fuel injection nozzle of an internal combustion engine, particularly a diesel engine, provided with a movably guided valve body which forms a valve seat and is controlled by a driving unit and provided with an inner space and with a pressure chamber between an inlet and the valve seat whereby an injection pressure for the injection nozzle is built up in the pressure chamber when the valve seat is closed and pressure compensation is effected between the pressure chamber and an outlet when the valve seat is open characterized in that the valve seat is formed by the end of the valve body lying near the inlet, the pressure chamber communicates with the inner space of the valve body through the valve seat when this is open and the inner space communicates with the outlet.

Abstract: A method of manufactore of, and apparatus for, a torque converter assembly having an improved reactor assembly. A torque converter is disclosed having a stator which has improved and simplified casting and machining requirements. A stator hub is provided having a cylindrical bore substantially coaxial with the axis of the transmission shaft to which the torque converter is mounted. An overrunning clutch and thrust bearing cartridge assembly is provided to be fitted into the stator hub bore. The overrunning clutch provides improved lubrication on both sides of the clutch engaging element surfaces, either rollers or sprags, between the inner and outer rings which form the clutch races. Wear surfaces within the clutch assembly are stamped steel instead of aluminum. Clutch load is increased by increasing the roller or sprag dimensions in the direction of the stator axis, while maintaining the same stator hub width. Thrust bearings are mounted to the outside of the overrunning clutch.