Pneumatic gun

According to the invention a firing mechanism is provided for use in semi-automatic guns of the type which use compressed gas to fire projectiles from a gun barrel. The mechanism has an inlet valve to receive the gas and an automatic outlet valve connected pneumatically to the inlet valve. A compoun...

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Bibliographic Details
Main Author SHEPHERD; CHARLES G
Format Patent
LanguageEnglish
Published 14.07.1998
Edition6
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE ORCOMBUSTIBLE PROPELLANT CHARGE
WEAPONS NOT OTHERWISE PROVIDED FOR
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Summary:According to the invention a firing mechanism is provided for use in semi-automatic guns of the type which use compressed gas to fire projectiles from a gun barrel. The mechanism has an inlet valve to receive the gas and an automatic outlet valve connected pneumatically to the inlet valve. A compound valve element is biased to move longitudinally from a first position where it is ready for firing to a second position. When the mechanism is actuated the valve element moves to the second position and gas flows from the inlet valve into a gas chamber in the outlet valve. When the gas reaches a selected pressure the valve element is driven back towards the first position before the gas is free to fire a projectile. This ensures that sufficient force is available to recock the gun and that the gas pressure available to drive the projectile is generally constant thereby controlling the muzzle velocity of the projectile.
Bibliography:Application Number: US19970794707