Automatic pistol

Details Automatic pistol Automatic pistol

2008-04-24

2011-11-29

Johnson, Stephen M (Department: 3641)

Ordnance

Automatic

Blow back breech block

C089S190000, C089S186000, C089S184000, C089S171000, C089S176000

Reexamination Certificate

active

08065950

ABSTRACT:
An automatic pistol essentially consists of an immovable barrel, a breech with a firing pin and a cartridge extractor, a breech frame, a spring-loaded device for the removal of gas with a gas piston and a gas cylinder, a firing mechanism and a magazine. The barrel is fitted with an end piece, which is located in the lower part of the rear end of the barrel. The design of the breech allows for the displacement of its front part downwards, when the breech is in its front end position. The front part of the breech is fitted with side locking lugs. The corresponding locking grooves are located in the cavities on the end piece of the barrel. The gas piston has an opening for ejecting the cartridge casing. In the course of the backward movement, the gas piston unlocks the breech and draws it back. In the forward movement, the breech is carried forward and pushed downwards. The gas cylinder is located at the front part of the barrel and encompasses the barrel. Along the length of the barrel gas ducts are fixed.

REFERENCES:
patent: 743002 (1903-11-01), Knoble
patent: 1083872 (1914-01-01), Berthier
patent: 1176254 (1916-03-01), Smith
patent: 1418021 (1922-05-01), Reifgraber
patent: 1428304 (1922-09-01), Stevenson
patent: 1455880 (1923-05-01), Hammond
patent: 2997924 (1961-08-01), Rosebush
patent: 3069976 (1962-12-01), Stevens, Jr.
patent: 3306168 (1967-02-01), Blumrick
patent: 3866516 (1975-02-01), Frisoli
patent: 4461203 (1984-07-01), Jawdat
patent: 6257116 (2001-07-01), Moczijdlower et al.
patent: 0573093 (1993-12-01), None
patent: 2156938 (2000-09-01), None
patent: 2166720 (2001-05-01), None

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