| 摘要 |
<p>PCT No. PCT/EP96/03029 Sec. 371 Date May 4, 1998 Sec. 102(e) Date May 4, 1998 PCT Filed Jul. 11, 1996 PCT Pub. No. WO97/05388 PCT Pub. Date Feb. 13, 1997The present invention relates to a piston pump for a hydraulic system including a cylindrical bore, a pump piston adapted to reciprocate in the cylindrical bore and bounding, as a movable wall, a working chamber, and an inlet valve which closes in the way of a non-return valve and has a closure member and a valve seat, the closure member being preloaded by a valve spring which is arranged in a spring housing that cooperates with the pump piston, on the one hand, and with a compression spring preloading the pump piston, on the other hand, wherein the spring housing is attached to the pump piston and the compression spring is attached to the spring housing, and at least one of the attachments is by way of a frictional and/or operative engagement.</p> |
