E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/13
E21B 43/116 (2006.01) E21B 43/1185 (2006.01)
Patent
CA 1311189
ABSTRACT OF THE INVENTION A firing head which is actuatable by either mechanical or hydraulic force. The firing head includes two pistons, one releasable through mechanical force, and the other releasable through hydraulic force. The first piston is secured in position until application of either an impact or an upward tension on an actuation piston. The second firing piston is responsive to hydrostatic pressure.
584844
George Flint R.
George Kevin R.
George Flint R.
George Kevin R.
Haliburton Company
Swabey Ogilvy Renault
LandOfFree
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