Shock actuated unit

Details Shock actuated unit Shock actuated unit

1982-09-20

1985-03-12

Herrmann, Allan D.

Machine element or mechanism

Automatic operation or control

74626, 74802, 137 38, 251 73, 251 74, G05G 1700, F16K 1736, F16K 3153

Patent

active

045037175

ABSTRACT:
A seismic actuator preferably including a differential gear mechanism having an output connected to a valve or other element to be controlled, an input connected to a manually operated member, and an input/output connected to a power unit which acts automatically upon subjection of the apparatus to shock forces to actuate the controlled member, with the differential gear mechanism functioning to permit operation of the controlled element by either the manually operated member or the automatic power unit, and also enabling resetting of the power unit by the manual member. The apparatus may include a source of pressure fluid and valve means responsive to shock forces to control the delivery of pressure fluid to a power unit in a manner causing the power unit to actuate the controlled element when the shock forces are encountered.

REFERENCES:
patent: 1793228 (1931-02-01), Hackethal
patent: 1831021 (1931-11-01), Markel
patent: 2621544 (1952-12-01), Rossmann
patent: 2669257 (1954-02-01), Ramsay
patent: 2997052 (1961-08-01), Mangini
patent: 3113473 (1963-12-01), Morlen
patent: 4007643 (1977-02-01), Matsushita
patent: 4185507 (1980-01-01), Domyan
"Greer Fail Safe Actuators", Greer Rotary Actuator Division, Bulletin _No. 8151, Reissued 4/81.

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