E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/06 (2006.01)
Patent
CA 2465058
A bonnet lock mechanism for a blowout preventer including an angled surface disposed in the blowout preventer, a latching dog having a tapered surface disposed in the bonnet, and a lock actuator operatively coupled to the latching dog. The the lock actuator is adapted to move the latching dog such that the latching dog is in locking engagement with the angled surface of the blowout preventer.
Berckenhoff Michael Wayne
Hemphill Edward Ryan
Holland William Rinehart
Borden Ladner Gervais Llp
Hydril Company
Hydril Usa Manufacturing Llc
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