Electricity: circuit makers and breakers – Fluid pressure – Piston
Patent
1992-02-24
1993-10-12
Scott, J. R.
Electricity: circuit makers and breakers
Fluid pressure
Piston
200 83R, H01H 3524
Patent
active
052527964
ABSTRACT:
A signal tube operated switch includes a contact arrangement which is moved from a first, open circuit position to a second, closed circuit position by a shock wave or pressure pulse initiated by a detonator. The switch is preferably an electric switch and in at least one embodiment includes a movable conductive piston consisting of at least one portion in continuous conductive engagement with the conductive signal tube. The other portion of the contact arrangement causes a change in the circuit after the contact arrangement is relocated to the second circuit closing position. Accordingly, the overall working efficiency of delay detonators is improved.
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Creighton Wray James
Scott J. R.
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