AXIAL PISTON DEVICE

摘要

An axial piston device may be operated as a pump and includes a self-centering rotary valve. The device includes a stationary housing encompassing a shaft and the rotary valve. The rotary valve and the shaft are coupled to each other. Upon rotation, the rotary valve self-centers as a result of elimination of moments and forces within the pump. The inventive pump is a piston device. The valve is within a valve bore, which is a part of a manifold. A shaft is within the manifold and the shaft is attached at its distal end to a planar surface of the rotary valve. The shaft has a first axis of rotation and the rotary valve has a second axis of rotation. During operation of the pump, the first axis is often times offset from the second axis. The pump operates via a swashplate with reciprocating pistons while the housing remains stationary.

主权项

1. A piston device comprising:
a stationary cylinder block, a shaft that is rotatable about its own axis within the stationary cylinder block, and the shaft comprising a plurality of passages configured to receive, direct and exhaust fluid, the shaft centrically and eccentrically rotatable during operation of the pump, and a swash plate coupled to the shaft, the swash plate having a first side coupled to a first plurality of pistons.