Lever operator for a valve control and actuating mechanism

Details Lever operator for a valve control and actuating mechanism Lever operator for a valve control and actuating mechanism

1981-12-11

1984-07-17

Walton, George L.

Valves and valve actuation

With means for blocking or disabling actuator

Released by non-valving actuator motion

74 54, 74471XY, 70176, 70180, 251104, 251215, 251229, 251251, 137385, F16K 3502, F16K 3152

Patent

active

044601530

ABSTRACT:
A lever operator for use primarily with valves of the plug type in which a tapered plug is raised to unseat associated slips and then rotated to a valve open position during opening of the valve and is rotated to a valve close position and lowered to seat the associated slips for closing the valve. The lever operator comprises an elongated lever arm having an eccentric cam at one end thereof connected to the trunnion of the valve to which the invention is assembled and also comprises a unique dual slot gate mechanism which houses the lever arm and restricts the motion of the arm to the requisite vertical and rotational movement which must be carried out in the appropriate sequence to properly operate the tapered plug mechanism of the valve.

REFERENCES:
patent: 1758727 (1930-05-01), Wildin
patent: 2553349 (1951-05-01), Annicq
patent: 3228415 (1966-01-01), Geiss
patent: 3329394 (1967-07-01), Overbaugh
patent: 3492880 (1970-02-01), Pearson
patent: 3793893 (1974-02-01), Heinen
patent: 3865130 (1975-02-01), Mullis
patent: 4126294 (1978-11-01), DeFrees
patent: 4130129 (1978-12-01), Pollock
patent: 4234157 (1980-11-01), Hodgeman et al.
patent: 4293117 (1981-10-01), Mueller
patent: 4350322 (1982-09-01), Mueller

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