Abstract: A rotary-vane pump has a pump outlet, a pressure chamber of the pump, a flow control valve, and a throttle disposed between the pump outlet and the flow control valve. According to the present invention, the throttle is formed by an insert which is disposed in a pressure passage between the pump outlet and the flow control valve. Specifically, the pressure passage is disposed between the pump outlet and the pressure chamber, and the insert is hollow cylindrical and has an axial bore having one axial end portion disposed on the pressure passage. The insert is disposed in the pressure passage at an angle approximately 90.degree. in relation to the inflow direction of pressure medium in the passage.

Abstract: A rail vehicle for the transport of heavy and/or bulky goods with one multi-axle driving mechanism each. The driving mechanisms are respectively arranged on both ends of said rail vehicle. The rail vehicle furthermore includes at least one bridge girder interconnecting the bogies at each end of said rail vehicle. Pivotally mounted on said at least one bridge girder by means of an interposed displaceable member is a beak of a loading bridge supported by said driving mechanisms. The displaceable member with a displacing device facing the vehicle end infinitely variably displaceably and/or arrestably is connected to the bridge girder. The displacing device which faces toward the central portion of the vehicle rigidly or movably connects the displaceable member by way of a pivot point or bolt fixedly guided on the beak to the beak which is rotatable about a joint. The two displacing devices are adapted by a controlling device to be controlled in conformity with each other.

Abstract: An improvement in a heavy-duty refuse compactor which includes a large capacity container having an initially open rear end normally closed by a top-hinged, releasably-locked door adapted to be swung upward to an open position for discharge of refuse from the container; the improvement comprising a counterbalance mechanism, connected between the container and the door, arranged to assist in the manual opening and closing of the door by the operator, and to permit such opening and closing from a convenient position. The counterbalance mechanism includes a novel link and lever array wherein the lever carries a heavy counterweight.

Abstract: An axially movable ball bearing includes a cage having a plurality of circumferentially distributed guideways, each guideway including first and second axially extending channels joined at their ends by semi-circular sections. A plurality of balls are provided in each of the guideways. The first channels are open radially inwardly so that the balls therein may engage a shaft along which the bearing is adapted to move. A thin-walled metal housing is tightly fitted over the cage, and has bridge sections aligned with the first channels. The bridge sections have on their radially inner surfaces, guide courses for engaging the balls in the first channels. The housing is slotted between the bridge sections, so that the second channels project radially outwardly between the bridge sections. The bridge sections are joined together at each axial end of the bearing by end rings. The metal housing has a greater hardness in the region of the courses of the bridge sections than in the other regions thereof.