Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing control mechanically actuated in bore
Patent
1983-12-12
1985-06-18
Suchfield, George A.
Boring or penetrating the earth
Boring with explosion in inaccessible hole
Firing control mechanically actuated in bore
102310, E21B 43116
Patent
active
045236500
ABSTRACT:
An explosive safe/arm system for use in a perforating gun includes a selectively rotatable member mounted intermediate a detonator and a length of detonator cord. The rotatable member includes a transversely oriented bore which is selectively rotatable into and out of axial alignment with the detonator and the detonator cord. Mounted within the bore is an explosive element for transferring an explosive detonation wave from the detonator to the detonator cord when the bore is in axial alignment.
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McClure Gerald B.
McPhee William A.
Sehnert Steven D.
Bui Thuy M.
Byron Richard M.
Dresser Industries Inc.
McCollum Patrick H.
Suchfield George A.
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