Driving piston braking means for explosive powder actuated setti

Details Driving piston braking means for explosive powder actuated setti Driving piston braking means for explosive powder actuated setti

1989-06-12

1990-07-17

Jordan, Charles T.

Ordnance

Explosive operated apparatus

227 10, B25C 114

Patent

active

049413910

ABSTRACT:
In an explosive powder actuated setting device, a driving piston (8) is displaceable between a ready-to-fire position and a fired position within a barrel (12) formed by a piston guide (5). When the piston is driven from the ready-to-fire position into the fired position, it is held by braking balls (17) supported in recesses (16) in the piston guide. As it moves into the fired position, the piston moves the braking balls into the range of a spring (18) which biases the balls inwardly against the shank (11) of the piston (8). When the piston is returned into the ready-to-fire position, the balls move out of the range of the spring releasing the biasing force acting on the piston shank via the balls.

REFERENCES:
patent: 3115636 (1963-12-01), Elliott
patent: 3915242 (1975-10-01), Bell
patent: 4064783 (1977-12-01), Ess
patent: 4358041 (1982-11-01), Ollivier

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