Ammunition and explosives – Igniting devices and systems – Arming devices
Patent
1990-02-16
1991-07-02
Brown, David H.
Ammunition and explosives
Igniting devices and systems
Arming devices
89 115, 1022021, 102262, F42C 15188, F42C 1534
Patent
active
050277081
ABSTRACT:
A safe-arm or quick arm system for a perforating gun includes a body containing a detonator and an adapter head containing an electrical plug and a detonating cord shell, the body and associated detonator being rotatable relative to the adapter head and associated detonating cord shell. Upon rotation of the body relative to the adapter head, the detonator moves from a start position to a transport position. In this position, the plug is not electrically connected to the detonator and the leads connected to the detonator are short circuited. The detonator is not adapted to receive electrical power. Upon further rotation of the body relative to the adapter head, the detonator moves from the transport position to an electrical contact position. In this position, the plug is electrically connected to the detonator but the detonator is not aligned with the detonating cord shell. Upon further rotation of the body relative to the adapter head, the detonator moves from the electrical contact position to the armed position. In this position, the plug is electrically connected to the detonator and the detonator is aligned with the detonating cord shell.
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Aseltine Clifford L.
Dailey Terrell E.
Gonzalez Manuel T.
Bouchard John H.
Brown David H.
Garrana Henry N.
Schlumberger Technology Corporation
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