Emergency shutdown valve actuator

Fluid handling – With casing – support – protector or static constructional... – Guards and shields

Reexamination Certificate

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Details

C251S014000

Reexamination Certificate

active

06913034

ABSTRACT:
An emergency shutdown valve actuator includes a support and a fluid activated actuator drive secured to the support. Clamps are provided for clamping the support onto a tubular member. A drive key is provided which is adapted to couple the actuator drive and a female receptacle of a valve member, such that movement of the actuator drive is transmitted via the drive key to the valve member to move the valve member between an open and a closed position. The actuator drive is coupled to a fluid source controlled from a remote control panel such that fluid is supplied to activate the actuator drive in the event of an emergency.

REFERENCES:
patent: 2964054 (1960-12-01), Weatherhead, Jr.
patent: 3954251 (1976-05-01), Callahan, Jr.
patent: 3964508 (1976-06-01), Miller
patent: 4046350 (1977-09-01), Massey et al.
patent: 4576358 (1986-03-01), Mott et al.
patent: 4633897 (1987-01-01), Effenberger
patent: 4650153 (1987-03-01), Winegeart
patent: 4872482 (1989-10-01), Jarrett
patent: 5150730 (1992-09-01), Campbell
patent: 5340078 (1994-08-01), Dean
patent: 5954088 (1999-09-01), Huang
patent: 6076799 (2000-06-01), Baumann
patent: 6216724 (2001-04-01), Niinivaara

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