Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1992-11-25
1995-05-02
Walton, George L.
Fluid handling
Processes
Cleaning, repairing, or assembling
73 46, 137312, 137315, 251214, 277 2, 277 17, F16K 4300, G01M 308
Patent
active
RE0349232
ABSTRACT:
A safety structure for detecting fluid leakage from a valve having an exposed end of a rotatable valve stem connected to a valve element within the valve for rotating the valve element between an open and a closed position. The safety structure comprises a jacket, and an elongated handle extension disposed within the jacket for rotation about its axis. The handle extension includes an end which extends outward from the jacket for turning the handle extension. The jacket terminates in an annular flange which is attached to the valve in an isolating configuration having the exposed end of the valve stem covered, and the handle extension connected to valve stem via a slot on the lower end of the handle extension and a pair of opposed flats on the covered end of the rotatable valve stem over which the slot extends for transferring the rotation of the handle extension to the valve stem. A sealed chamber in the jacket surrounds the elongated handle and extends along the handle in the isolating configuration to communicate with the rotatable valve stem and isolate the covered end of the rotatable valve stem. A leakage detector is connected to a sniffer port in the jacket which communicates with the sealed chamber and detects leakage from the valve around the rotatable valve stem. A fluid reservoir is connected with a collection port in the jacket which communicates with the sealed chamber and collects fluid leakage from the valve around the rotatable valve stem.
REFERENCES:
patent: 909479 (1909-01-01), Thwing
patent: 1606715 (1926-11-01), Miller
patent: 2156498 (1939-05-01), Hinrichs
patent: 2691773 (1954-10-01), Lichtenberger
patent: 2954797 (1960-10-01), Dryer
patent: 3209830 (1965-10-01), Orr et al.
patent: 3219059 (1965-11-01), Williams et al.
patent: 3307574 (1967-03-01), Anderson
patent: 3392983 (1968-07-01), Hajner
patent: 3563508 (1971-02-01), DeLorenzo
patent: 3838707 (1974-10-01), Wachowitz
patent: 3887196 (1975-06-01), Renfrow
patent: 3955822 (1976-05-01), Irby
patent: 3972396 (1976-08-01), Bochnak
patent: 4010769 (1977-03-01), DeLorenzo et al.
patent: 4304251 (1981-12-01), Schadel et al.
patent: 4515344 (1985-05-01), Gemignani
patent: 4573344 (1986-03-01), Ezekoye
patent: 4694848 (1987-09-01), Jorgensen et al.
patent: 4834137 (1989-05-01), Kawaguchi et al.
Neotecha AG
Walton George L.
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