Pneumatic gun

Mechanical guns and projectors – Fluid pressure – With control for discharge of fluid pressure

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Details

124 73, F41B 1132

Patent

active

057788685

ABSTRACT:
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.

REFERENCES:
patent: 3921614 (1975-11-01), Fogelgren
patent: 4936282 (1990-06-01), Dobbins et al.
patent: 5063905 (1991-12-01), Farrell
patent: 5078118 (1992-01-01), Perrone
patent: 5228427 (1993-07-01), Gardner, Jr.
patent: 5257614 (1993-11-01), Sullivan
patent: 5280778 (1994-01-01), Kotsiopoulos
patent: 5333594 (1994-08-01), Robinson
patent: 5339791 (1994-08-01), Sullivan
patent: 5349939 (1994-09-01), Perrone
patent: 5363834 (1994-11-01), Stuchlik
patent: 5383442 (1995-01-01), Tippmann

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