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US 4,057,002 AGranted
Kinetic barrel gun
AssigneeThe United States of America as represented by the Secretary of the Army
InventorWilliam F. Donovan
Life of this patent
Estimating the term…
Abstract
A gun having a piston accelerated by a first charge and a projectile moun to and accelerated relative to the piston by a powder charge on said piston ignited by a firing pin pneumatically actuated by the gases of the first charge. The gases of the first charge travel a convuluted path of decreasing cross-section.
Claims11
A gun for firing a projectile therefrom whereby the acceleration of the projectile is increased within the gun comprising:
- a tube having a primary combustion chamber and a piston-barrel chamber, said combustion chamber containing first charge means which includes an igniter means and a charge eccentrically mounted relative to the longitudinal axis of the tube to produce a stream of gas from said charge to said piston-barrel chamber and a gas pressure increasing means interposed between said charge and said chamber;
- said piston-barrel chamber having a piston therein accelerated by said gas from said charge means;
- said piston having means for retaining a projectile and second charge means for accelerating said projectile relative to said piston;
- and a firing means activated by said first charge means for igniting said second charge means.
1 more element
A gun for accelerating a projectile therefrom comprising:
- a housing;
- a piston located in said housing;
- first charge means in said housing for accelerating said piston;
- a projectile mounted on said piston;
- second charge means retained on said piston for accelerating said projectile relative to said piston;
- and means actuated by said first charge means for igniting said second charge means including a pin pneumatically actuated by the gases of said first charge means.
3 more elements
Dependencies are inferred from the claim text.