Blowout preventer operator locking system

Details Blowout preventer operator locking system Blowout preventer operator locking system

2007-11-27

2007-11-27

Rivell, John (Department: 3753)

Valves and valve actuation

Blow-out preventers

Radial reciprocating ram

C251S285000, C166S085400

Reexamination Certificate

active

11466160

ABSTRACT:
A blowout preventer operator locking system comprises a piston rod having one end coupled to a closure member. The operator further comprises an operator housing having one end coupled to a bonnet and a second end coupled to a head. The piston rod extends through the bonnet onto the operator housing where it is coupled to a piston that is disposed within the operator housing. The piston comprises a body and a flange. A sleeve is slidingly disposed within a cavity disposed within the piston and is rotationally fixed relative to the piston. A lock rod is rotatably coupled to the head and is threadedly engaged with the sleeve so that rotation of the lock rod axially translates the sleeve relative to the piston.

REFERENCES:
patent: 4492359 (1985-01-01), Baugh
patent: 4589625 (1986-05-01), Jones
patent: 5287879 (1994-02-01), Leggett et al.
patent: 5505426 (1996-04-01), Whitby et al.
patent: 5575452 (1996-11-01), Whitby et al.
patent: 6843463 (2005-01-01), McWhorter et al.
patent: 6969042 (2005-11-01), Gaydos

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