Ordnance – Cartridge feeding – Movable chamber
Reexamination Certificate
1997-09-26
2001-05-22
Johnson, Stephen M. (Department: 3641)
Ordnance
Cartridge feeding
Movable chamber
C089S155000, C042S009000, C042S027000, C042S039500, C102S376000
Reexamination Certificate
active
06234058
ABSTRACT:
This invention pertains generally to firearms and cartridges and, more particularly, to a semiautomatic pistol of a size small enough to be carried in a pocket or other concealed location, and to ammunition for use therein.
Because of inherent size limitations, pocket guns heretofore provided have had very limited fire power and very poor accuracy. Such guns are typically .22 or .32 caliber and have barrels which are no more than about two inches long. They tend to be relatively heavy and difficult to hold, with room for only two fingers on the grip below the trigger. Accuracy is limited not only by the shortness of the barrel, but also by a tendency of the barrel to rise when the gun is fired.
Because of the complexity of the action and the need to expel the casings of spent cartridges, it is very difficult to design a pocket gun which can be fired semiautomatically.
It is in general an object of the invention to provide a new and improved firearm and ammunition.
Another object of the invention is to provide a firearm and ammunition of the above character which overcome the limitations and disadvantages of pocket guns and ammunition of the prior art.
These and other objects are achieved in accordance with the invention by providing a semiautomatic pistol which is small enough to be carried in a pocket or otherwise concealed on the body of a person, and caseless ammunition for use in the pistol. The pistol has a grip adapted to be held in the hand of a shooter, a barrel extending in a forward direction from the grip, a closed chamber at the rear of the barrel, means for firing a caseless cartridge in the chamber with the entire cartridge being discharged through the barrel, and means responsive to the firing of the cartridge for opening the chamber and loading another cartridge into the chamber.
The caseless cartridge consists of a hollow projectile filled with gunpowder, and a primer for igniting the powder. The primer is mounted directly to the projectile, and there is no casing or other material to ejected before another round is loaded.
REFERENCES:
patent: 1191357 (1916-07-01), Snyder
patent: 2307369 (1943-01-01), Ferrel
patent: 3952657 (1976-04-01), Kaltmann
patent: 3997994 (1976-12-01), Kastner et al.
patent: 4152857 (1979-05-01), Ketterer
Flehr Hohbach Test Albritton & Herbert LLP
Johnson Stephen M.
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