Remote air operator for an air valve, with manual override and i

Details Remote air operator for an air valve, with manual override and i Remote air operator for an air valve, with manual override and i

1982-03-01

1984-06-12

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

Fluid and non-fluid actuators

92 84, 13762566, 251 634, F15B 13042, F16K 31122, F16K 31143

Patent

active

044536976

ABSTRACT:
A remote air operator for an air valve which includes a manual override and indicator means. The remote air operator includes a piston having an overtravel push pin which is adapted to be operated by an air pressure signal from a remote location. The push pin is adapted to directly engage the end of a valve spool and move the same from a first position to a second position. The push pin is slidably mounted in a remote control piston operated by the air pressure signal, and it is normally biased to an operative position by an overtravel spring. A second manual operator piston is slidably mounted in the remote operator piston and it is retained therein, and engages one end of the overtravel spring. A manual operator rod is attached to the manual operator piston to permit manual operation of the push pin to operate a valve spool.

REFERENCES:
patent: 1912447 (1933-06-01), Gray
patent: 2371815 (1945-03-01), Fitch
patent: 3506035 (1970-04-01), Chabrier
patent: 3530897 (1970-09-01), Buchanan
patent: 3734455 (1973-05-01), Natho et al.
patent: 3845932 (1974-11-01), Fontaine
patent: 3980270 (1976-09-01), Thomas
patent: 4088064 (1978-05-01), Tsunemoto et al.
patent: 4306586 (1981-12-01), Spencer
patent: 4325535 (1982-04-01), Foster
patent: 4372333 (1983-02-01), Goans

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