Temperature-compensated, acceleration-activated igniter

Details Temperature-compensated, acceleration-activated igniter Temperature-compensated, acceleration-activated igniter

1989-07-03

1990-08-21

Nelson, Peter A.

Ammunition and explosives

Igniting devices and systems

Arming devices

102251, 102352, F42C 1524

Patent

active

049496395

ABSTRACT:
A propellant igniter that is controlled by temperature and is activated by cceleration. The igniter includes a booster or primer for igniting a propellant charge. A spring-loaded firing pin is cocked by a rotating sear that, when released, energizes the booster. Rotation of the sear is controlled by a plurality of springs one of which produces a moment on the sear that is a function of temperature while others, a plurality of captive springs, produce restoring forces that are inversely proportional to acceleration as detected by an acceleration sensor. When the captive springs are sufficiently relaxed by the acceleration sensor, due to an increased acceleration, to allow the sear to rotate, the cocked firing pin is released, the booster is activated and ignition occurs.

REFERENCES:
patent: 4128061 (1978-12-01), Kaiser
patent: 4144816 (1979-03-01), Beuchat
patent: 4449457 (1984-05-01), Halssig
patent: 4699057 (1987-10-01), Ibarra
patent: 4716830 (1988-01-01), Davis et al.

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