Research/Patents/US 4907511
US 4907511Tier 1 — UAP Program Assignee

LIQUID PROPELLANT GUN

Assignee

General Dynamics

Filed as: GENERAL DYNAMICS ARMAMENT SYSTEMS, INC.

Filed

Jun 4, 1984

Granted

Mar 13, 1990

Location

SHELBURNE VT US

Abstract

A feature of this invention is the provision in an annular piston, annular control valve, liquid propellant gun, of a check valve to permit liquid propellant under relatively low pressure to flow from the supply system into the combustion chamber and to preclude the pulse of pressure generated in the combustion chamber from feeding back to the supply system. This valve allows propellant to be removed automatically from the pumping chamber in the event of a misfire. Another feature of this invention is the provision in an annular piston, annular control valve, liquid propellant gun of a frangible stem which secures the projectile to the cartridge case. The stem breaks to release the projectile for travel down the gun bore when a predetermined level of combustion gas pressure has been developed in the combustion chamber.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Feb 19, 1986

Rescinded

Jul 31, 1989

Duration

3 years, 5 months

Inventor

  • 1MELVIN J. BULMAN

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records