Ordnance – Automatic – Breech block lock
Patent
1987-09-14
1990-01-16
Bentley, Stephen C.
Ordnance
Automatic
Breech block lock
F41D 504
Patent
active
048935476
ABSTRACT:
A locked breach, gas operated long action firearm capable of firing heavy caliber shotgun or rifle shells with substantially reduced recoil. The gas piston and bolt carrier assembly are supported for recoil movement along a single guide rod which extends the entire length of the gun, permitting a longer recoil path resulting in reduced impulse due to recoil. The guide rod has a noncircular or radially-assymmetrical cross-section mating with a corresponding opening in the gas piston, so that the bolt carrier assembly remains in alignment over the entire recoil path. Separate close-bolt and open-bolt embodiments are disclosed, and the open-bolt embodiment is selectively capable of firing either semi-automatic or full-automatic while permitting reliable cartridge feeding from a box or drum magazine.
REFERENCES:
patent: 981210 (1911-01-01), Menteyne et al.
patent: 1043670 (1912-11-01), Chronis
patent: 2775166 (1956-12-01), Janson
patent: 3540147 (1970-11-01), Cream et al.
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