| 摘要 |
1,175,308. Valves. BLACK, SIVALLS & BRYSON Inc. 5 March, 1968 [14 March, 1967], No. 10722/68. Heading F2V. [Also in Divisions F4 and G3] A valve adapted to transmit only the higher of two pressure signals 21, 23 transmitted thereto comprises a pair of diaphragms 29, 31 which are biased downwards by signal 21 and upwards by signal 23 such that when signal 21 is the higher, as shown, diaphragm 31 is unseated to admit signal 21 to outlet 24. Diaphragm 29 is unseated when signal 23 is the higher. |
