Automatic valve manual lock out

Details Automatic valve manual lock out Automatic valve manual lock out

2006-09-12

2006-09-12

Bastianelli, John (Department: 3751)

Valves and valve actuation

With means for blocking or disabling actuator

Attachments

C251S091000, C251S292000, C070S177000

Reexamination Certificate

active

07104518

ABSTRACT:
A ready method to disconnect the motive power of an actuator from the input of a valve. A handle is inserted onto the coupling held in the housing, disconnecting the motive power of the actuator and engaging the driven piece connected to the input shaft of the valve. With this handle in place, manual control of the valve is attained and the handle indicates position. The housing can be orientated so that the handle can be inline with the valve action as normally done on manually operated valves. The position of the valve may be fixed by locking the handle to the housing, removing automatic control of the valve. When the handle is removed from the coupling, normal automatic operation is restored. The handle may store at the valve for ready use by maintenance or in a secure location to prevent unauthorized use.

REFERENCES:
patent: 2746478 (1956-05-01), Johnson
patent: 4534379 (1985-08-01), Burge
patent: 4647007 (1987-03-01), Bajka
patent: 5139041 (1992-08-01), Albrecht
patent: 5143114 (1992-09-01), Daniels
patent: 6148851 (2000-11-01), Friedline et al.
patent: 6361017 (2002-03-01), Nimberger et al.
patent: 6604391 (2003-08-01), Vellette et al.
patent: 6622536 (2003-09-01), Fuller

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