| 摘要 |
<p>1350408 Pneumatic motor control circuits ROSS OPERATING VALVE CO 17 Nov 1971 [18 Dec 1970] 53382/71 Heading F1P [Also in Divisions F2 and G4] Clamps A, B and C are extended in turn and then all retracted in response to successive manual actuations of a valve 101. The circuit comprises three valves 11a, 11b, 11c, each of which provides a pulse on a first outlet 14a, b, c in response to a first pulse at its inlet 13a, b, c. Each valve 11a, b, c, has a spool which is moved rightwards by the first pulse applied to its inlet so that the next and any subsequent pulses applied to its inlet are directed to the second outlet 15a, b, c. The second pulse applied to valve 11c (i.e. the fourth pulse of a sequence) moves all the spools leftwards and retracts all the clamps.</p> |
