Locks – Special application – For control and machine elements
Patent
1994-10-03
1997-09-09
Gall, Lloyd A.
Locks
Special application
For control and machine elements
70178, 70221, 70422, F16K 3510
Patent
active
056644477
ABSTRACT:
A lockout device to prevent tampering with the manually set position of a valve or regulator or other device having a rotatable shaft for adjusting, for example, the flow of fluid through the device, from a position initially set to some other position. The lockout device is usable with a wide range of standard valves and regulators which have a drive stem and includes a drive gear that engages the drive stem and a key locking device mounted in a generally cylindrical handle of the lockout device and being selectively movable from a first position in which the handle free-wheels relative to the drive stem of the valve so as to prevent unauthorized moving of the rotational position of the valve stem by any person not having a key to an engaging position in which the handle is locked to the drive stem to permit ordinary rotational movement and setting of the valve stem position.
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Adams Paul
Gall Lloyd A.
Myers Jeffrey D.
Peacock Deborah A.
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