Abstract: A pneumatic starter arrangement includes a pneumatic actuator having a piston supporting for axial displacement a starter pinion to engage or disengage a flywheel gear of an internal combustion engine. A pressure air source is connected to the actuator via a supply branch conduit including a pilot valve. A starter motor which rotates the starter pinion is connected to the pressure air supply via a main control valve. To insure flawless engagement of the starter pinion with the flywheel gear, a bypass conduit with a relief valve is connected between the supply branch conduit and the starter motor. The main control valve is normally in its closed position and is controlled by a switching conduit leading to a port in the pneumatic actuator so that when the piston of the actuator displaces the starter pinion in its fully engaged position, the main control valve is switched on and the starter motor is activated.

Abstract: Control arrangement for a reversible hydrostatic axial or radial piston machine comprises a fluid guiding outer annular space surrounding a control body consisting of an eccentric disk connected to the shaft of the machine for rotation therewith and an inner control ring which is freely turnable on the periphery of the disk, as well as an outer control ring telescopingly and sealingly guided on the inner control ring, in which the rings are hydraulically and by spring pressed apart in axial direction, with one of the control rings engaging with an end face thereof a planar control face of the machine and the other of the control rings engages with an end face thereof a planar support face, which is axially spaced from and parallel to the planar control face, and wherein the eccentric disk has a hub surrounding the shaft and having an end face which, supported by the force of a spring, is hydraulically pressed against the control face, whereby the disk with the end face on its hub and one of the control rings