Relay lock-out

Details Relay lock-out Relay lock-out

1976-12-13

1978-06-13

Weakley, Harold W.

Fluid handling

Systems

Multi-way valve unit

13762427, 1376256, F16K 1700

Patent

active

040943402

ABSTRACT:
Device for providing a first signal to an actuator as a function of a further signal received from a further member, wherein on said device blocking said first signal, means other than said further signal are required to cause unblocking of said first signal.

REFERENCES:
patent: 3131722 (1964-05-01), Abbott
patent: 3253516 (1966-05-01), Huntington
patent: 3746401 (1973-07-01), Stearns
patent: 3781065 (1973-12-01), Kersting
patent: 3980336 (1976-09-01), Bitonti

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