Underwater side arm
OwnerReed E. Donnard, Edward R. Hirsekorninventors
Life of this patent
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Abstract
1. A device including an expendable cartridge-barrel assembly comprising a cartridge casing forming a barrel, the wall thickness of said barrel being at least equal to about the diameter of the bore therein, a retainer affixed to and rearwardly of said casing, a high energy propellant enclosed within said assembly, a primer within said retainer and communicating with said propellant, a projectile frictionally fitted within and extending along the bore of said barrel and having a rear end in proximate relation to said propellant, said projectile being designed for high sectional density and minimum drag with water, and a watertight seal affixed to a front end of said cartridge-barrel assembly.
Claims8
A device including an expendable cartridge-barrel assembly comprising a cartridge casing forming a barrel, the wall thickness of said barrel being at least equal to about the diameter of the bore therein, a retainer affixed to and rearwardly of said casing, a high energy propellant enclosed within said assembly, a primer within said retainer and communicating with said propellant, a projectile frictionally fitted within and extending along the bore of said barrel and having a rear end in proximate relation to said propellant, said projectile being designed for high sectional density and minimum drag with water, and a watertight seal affixed to a front end of said cartridge-barrel assembly.
In combination with an underwater side arm, an expendable cartridge-barrel assembly comprising a cartridge casing forming a barrel at one end, a retainer screw-threadedly mounted to the other end of said casing and providing a primer support, a propellant within the casing and adjacent the primer support, a water-tight seal affixed to a front end of said barrel and a water-tight seal affixed to a front face of said propellant, a projectile frictionally fitted within and extending along the bore of said barrel and having its rear end contacting said water-tight seal affixed to the front face of said propellant, said projectile being designed for high sectional density and minimum drag with water.
An underwater side arm including an expendable cartridge-barrel assembly comprising a casing forming a barrel at one end, a retainer mounted on the other end of said casing, a primer supported and contained within said retainer, said casing and retainer forming a chamber therebetween, an internal shoulder shaped in said casing adjacent a forward end of said chamber, a propellant within said chamber communicating with said primer, a piston movable within the chamber having a rear portion contacting the propellant, an O-ring disposed about an outer periphery of said piston generally intermediate its ends, a flanged shoulder integral with a forward portion of said piston and having a recess disposed centrally thereof;
- a projectile having its rear end seated within said recess and its remaining portions extending through the chamber, through the bore of said barrel, through a water-tight seal affixed to a forward end thereof and terminating at a point beyond said forward end;
- a firing pin aligned with said primer, a housing for supporting said firing pin, a cartridge holder surrounding said cartridge-barrel assembly generally about its chamber, a swivel connection between the firing pin housing and cartridge holder adjacent their lower portions, means for locking said firing pin housing to said cartridge holder and means for spring loading and releasing said firing pin.
Dependencies are inferred from the claim text.