Improvements in or relating to Fluid Control Valves

摘要

1,168,512. Valves. ALFRED TEVES G.m.b.H. 6 Oct., 1967 [14 Feb., 1967], No. 45815/67. Heading F2V. The grooves 13 in the spool 20 of a slide valve are shaped as shown to provide a fluid reaction force tending to assist the spring (not shown) to return the spool to its neutral position.