Gas spring airgun

Details Gas spring airgun Gas spring airgun

1991-06-10

1993-03-16

Reese, Randolph A.

Mechanical guns and projectors

Fluid pressure

Provided by movement of user-actuated, projector-mounted...

124 65, F41B 1100

Patent

active

051935171

ABSTRACT:
A gas spring airgun in which the power system comprises a main cylinder which contains a piston and a hollow dummy piston. The piston is a sliding fit within the main cylinder while the dummy piston is fixed relative to the main cylinder, and is of considerably small diameter. A collar is located in the space between the dummy piston and the piston and is substantially fixed relative to the piston and slidable relative to the dummy piston, when the system is pressurized.

REFERENCES:
patent: 2101198 (1937-12-01), Robinson
patent: 2145277 (1939-01-01), Reardon
patent: 2652821 (1953-09-01), Fitch
patent: 4709686 (1987-12-01), Taylor et al.
patent: 4771758 (1988-09-01), Taylor et al.
patent: 4850329 (1989-07-01), Taylor et al.
patent: 4870945 (1989-10-01), Hutchison

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