Firing pin block for firearm with a rotary breech bolt

Details Firing pin block for firearm with a rotary breech bolt Firing pin block for firearm with a rotary breech bolt

1982-05-03

1983-06-28

Bentley, Stephen C.

Ordnance

Automatic

Breech block lock

F41D 306, F41D 1116

Patent

active

043899196

ABSTRACT:
A firing pin block for a firearm of the type having a rotary breech bolt, a reciprocating bolt carrier, complementary locking lugs formed on the bolt and barrel to releasably secure them together, and cam means drivingly connecting the bolt and bolt carrier for opening and closing the bolt. The firing pin block positively prevents discharge of the firearm at any time when the bolt is unlocked. It does not rely on the presence or good condition of any separate parts, but instead coordinates the cam-actuated rotary operation of the locking lugs with relative longitudinal displacements between the bolt and bolt carrier, to cause the latter to block an enlarged abutment formed on the firing pin whenever the bolt is unlocked.

REFERENCES:
patent: 2675638 (1954-04-01), Crittendon
patent: 2685754 (1954-08-01), Crittendon et al.
patent: 2926446 (1960-03-01), Benson
patent: 2976637 (1961-03-01), Robinson
patent: 3285133 (1966-11-01), Fowler
patent: 3397473 (1968-08-01), Browning
patent: 3675534 (1972-07-01), Beretta
patent: 3690218 (1972-09-01), Maillard
Edward C. Ezell, Small Arms of the World, 1977, pp. 560-562.

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