| 摘要 |
<p>Hydraulic piston pump given a reciprocating to-and-fro movement by bearing, by means of a pad, against a cam carried by a drive shaft, characterised in that a device forming a non-return intake valve is built into each piston (14), whilst the delivery pressure is permanently reinjected inside the pad (17), via which the said pad (17) rests on the said cam (6). <IMAGE></p> |
