Controlled actuator

Details Controlled actuator Controlled actuator

1974-07-25

1976-11-23

Engle, Samuel W.

Ammunition and explosives

Igniting devices and systems

102 81, 60632, 244149, F42C 502

Patent

active

039929990

ABSTRACT:
A compact aneroid actuated explosive initiator for releasing a parachute upon descent to a predetermined altitude includes a firing pin releasably restrained by a rotatable sear that is urged toward release position. Cocking is achieved by compressing a driving spring without moving the firing pin, but concomitantly releasing a first restraint upon release of the sear. A second restraint upon release of the sear is provided by trigger levers under control of an aneroid barometer whereby the sear can be released and the firing pin driven by the firing spring only after cocking has been accomplished and a selected barometric condition exists.

REFERENCES:
patent: 2873681 (1959-02-01), Lauritsen
patent: 2958278 (1960-11-01), Turlay
patent: 2969212 (1961-01-01), Martin
patent: 3015277 (1962-01-01), Junghaw et al.
patent: 3142958 (1964-08-01), Roberts et al.

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