Safety device for a mechanical igniter of a gas generator

Details Safety device for a mechanical igniter of a gas generator Safety device for a mechanical igniter of a gas generator

1994-01-18

1996-05-21

Dickson, Paul N.

Land vehicles

Wheeled

Attachment

280806, 411535, 411553, B60R 2132

Patent

active

055182674

ABSTRACT:
A mechanical igniter for a gas generator has a weight, a latch lever and a firing pin, which are provided in a casing as movable elements to fire a percussion cap attached to the gas generator in response to acceleration. The mechanical igniter further has a restraint member movably supported in the casing as a safety catch for making the movable elements immovable. The casing and the restraint member are respectively formed with cam surfaces which cooperate with each other to rotate the restraint member about its own axis so that the restraint member is selectively set in a restraint position and a release position. The restraint member has a rotary control portion that is concealed in the casing and has a portion that is engageable by a rotary tightening tool, such as used in an ordinary bolt tightening operation or the like. The restraint member is rotated by engaging the rotary tightening tool with the rotary control portion of the restraint member and turning the tool. As a result of the rotation, the restraint member is displaced from the restraint position to the release position and set in the latter position by the cooperation of the cam surfaces. Thus, the movable elements are released from the immovable state, thereby allowing the igniter to fire the percussion cap in response to acceleration.

REFERENCES:
patent: 3675280 (1972-07-01), Winslade
patent: 4916836 (1990-04-01), Baggio et al.
patent: 4955638 (1990-09-01), Kinoshita et al.
patent: 5129680 (1992-07-01), Mori
patent: 5143403 (1992-09-01), Fohl
patent: 5149134 (1992-09-01), Fohl
patent: 5163709 (1992-11-01), Mori
"Simmons Fasteners", Simmons Fastener Corp. Jan. 29, 1962, p. 42.

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