Firearms – Safety mechanism – On trigger guard
Patent
1993-02-05
1994-12-13
Johnson, Stephen M.
Firearms
Safety mechanism
On trigger guard
42 101, F41A 1754
Patent
active
053719654
ABSTRACT:
The gun safety indicator is a generally oval, round or ovoid-shaped cup with a lip or flange around its perimeter. The bottom of the cup is a diaphragm which will flex when pressure is applied. In its relaxed state, the diaphragm has a circumference equal to or slightly larger than the circumference of the opening between the trigger guard and the trigger with the trigger depressed. The safety indicator is pushed through the trigger guard opening of an unloaded gun with the user's thumb on the inner side of the pressure diaphragm. The applied force deforms the diaphragm enough to decrease its effective circumference, allowing it to pass through the trigger guard opening. Due to the close fit, the pressure of the inner edge of the trigger guard compresses the sidewall of the cup such that the sidewall closest to the diaphragm bulges outward around the edges of the trigger guard to hold the device in place.
REFERENCES:
patent: 2080202 (1937-05-01), Drake
patent: 2590516 (1952-03-01), De Von Breymann
patent: 3022596 (1960-05-01), Cannon
patent: 3713239 (1973-01-01), Sperling
patent: 3732641 (1973-05-01), Adajian
patent: 4443962 (1984-04-01), Bernet et al.
patent: 4723370 (1988-02-01), Sheehan
patent: 4825576 (1989-02-01), Troncoso et al.
patent: 4912867 (1990-04-01), Dukes, Jr.
patent: 4945665 (1990-08-01), Nelson
patent: 5033218 (1991-07-01), Nelson
patent: 5075994 (1991-12-01), Nishioka
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