Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Philip Edward Koth0
Date of Patent
June 7, 2011
Patent Application Number
11787776
Date Filed
April 18, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
An improved two-stage light gas gun for launching projectiles at high speeds. The gun consists of three tubes: the expansion, pump, and launch tubes. The expansion tube contains a close-fitting expansion piston that is propelled by an explosive charge. The expansion piston in turn drives the pump piston housed within the pump tube by means of a rod connecting the two pistons. The action of the pump piston adiabatically compresses and heats a light gas of hydrogen or helium, bursting a diaphragm at a predetermined pressure and expelling the projectile from the launch tube at a very high speed.
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