Time coupling

Details Time coupling Time coupling

1992-05-29

1993-12-07

Johnson, Stephen M.

Ammunition and explosives

Igniting devices and systems

Arming devices

102256, 102260, F42C 15184, F42C 1521

Patent

active

H00012661

ABSTRACT:
A coupling device for use with a primer and blasting cap in demolition fig devices and the like. The device includes a body portion defining a straight line path from the primer to the blasting cap. Also included is a moveable slide positioned in the body to block the straight line path and moveable to clear that path. A spring is used to act on the slide to clear the path, and a safety pin holds the slide against the spring until firing is desired. A time delay device such as a liquid annular orifice dashpot delays movement of the slide. A preferred embodiment uses two slides and two springs to first clear the path and second place a blasting cap lead in alignment on the path when the slides clear the path.

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