Abstract: A method of manufacturing a gear wheel with stub toothing for a change-speed gearbox includes drop-forging a gear wheel body and forming the stub toothing by cold die-grooving in the forging die using a forming tool with forming parts which are arranged in a fan-shaped manner. The forming ends penetrate into the tooth spaces, wherein the forming parts are guided jointly between an upper and a lower receiving plate and are moved in a direction radially inwards in such a way that material is displaced out of the region of the tooth flanks into the tooth root regions.

Abstract: A rotary pump with an improved seal on a control pressure chamber, including: a housing having a delivery chamber; a feed wheel rotatable in the delivery chamber; an actuating member surrounding the feed wheel forming delivery cells and moveable in the housing relative to the feed wheel. The control pressure chamber is delineated by the actuating member together with axially facing axial co-operating surfaces, forming an axial sealing gap and a radial sealing gap. A control fluid can be introduced into the control pressure chamber for applying pressure to the actuating member to exert an actuating force in the actuating direction; a restoring device for generating a restoring force; and a sealing element arranged on the actuating member or the circumferential co-operating surface. To compensate for a change in gap width of one of the axial sealing gaps, a base leakage cross-section is provided on the sealing element.

Abstract: A measurement arrangement for accurate and repeatable measurement of transmission and reception characteristics of a communication device. The arrangement comprises an at least partly conductive box forming a substantially enclosed cavity, and arranged in the box a reference antenna, at least one conducting mode mixer and/or at least one mode mixer with absorbing material.

Abstract: A measurement arrangement for accurate and repeatable measurement of transmission and reception characteristics of a communication device. The arrangement comprises an at least partly conductive box forming a substantially enclosed cavity, and arranged in the box a reference antenna, at least one conducting mode mixer and/or at least one mode mixer with absorbing material.

Abstract: A process for the manufacture of a synchronizing component, provided with a hort toothing having undercut teeth, for a shift transmission by precision forging, in which the teeth, the radially inner side of which lies against a common cylindrical surface and the base of which is placed on a common lower plane surface, being first manufactured with parallel tooth flanks and then subjected to final clenching, permits especially precise formation of the coupling surfaces, the following process steps being essential:(a) by means of preliminary forging a semi-finished product is produced the short toothing of which has teeth (7) having excess dimensions exceeding the finished tooth head (10),(b) by means of one or more subsequent calibrating strokes the cold semi-finished product is acted upon in such a manner that(aa) firstly the tooth head (10) are subjected to preliminary clenching, the radially outer sides of the teeth being supported on the forging-die side,(bb) simultaneously with the preliminary clenching o

Abstract: In the disclosed detector, data is passed into two channels. In one channel successive interword pulses are gated out and the resulting pulses stretched at least one-half pulse width. In the second channel pulses representing the entire data word stretched so that the interword pulses overlap. After the data words are suitably synchronized to equalize the stretching delays, an exclusive OR gate compares the channel outputs to produce a step representing the interword interval. The step opens a counter which counts a predetermined number of clock pulses to define the beginning of the next word. A delay at the beginning of the channels eliminates any lead between the data and the corresponding clock pulses.