Firing chamber safety plug

Details Firing chamber safety plug Firing chamber safety plug

1991-06-20

1991-12-10

Kyle, Deborah L.

Firearms

Safety mechanism

Firearm lock

42 96, F41A 1744

Patent

active

050706357

ABSTRACT:
A safety plug for preventing firearms from being surreptitiously loaded while on display in stores. The plug utilizes an O-ring that serves to firmly hold the safety plug in place. The use of an O-ring eliminates the need for high precision plug dimensions, permitting inexpensive mass production manufacturing techniques. The O-ring fits within a groove that is substantially wider than the thickness of the O-ring which prevents O-ring shearing. Once inserted, the safety plug is entirely within the firing chamber and thus does not interfere with the operating action of the firearm. The plug can only be removed by a cleaning rod inserted through the muzzle to force the plug out of the firing chamber. The use of translucent materials enables the firearm barrel to be inspected and acts as a diffuser to eliminate "hot spots" that commonly result during bore light inspections. An alternative embodiment for semi-automatic firearms provides a visual "safety" as the action remains partially open once the plug is inserted.

REFERENCES:
patent: H213 (1987-02-01), Panlaqui
patent: 3360880 (1968-01-01), Finnegan
patent: 3382596 (1968-05-01), Rockwood
patent: 3444639 (1969-05-01), Rockwood
patent: 3678609 (1972-07-01), Fazio
patent: 3848350 (1974-11-01), Seminiano
patent: 4776123 (1988-10-01), Ascroft
patent: 4835894 (1989-06-01), Libassi
patent: 4965952 (1990-10-01), Miller et al.
patent: 5014457 (1991-05-01), Lewis et al.
Kamiya, Barrel Plugs and Muzzle Brakes, Action Pursuit Game, Dec. 1990, p. 106.
Photograph of Related Art Sold by L. L. Bean Co., Freeport, Me.

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