Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1981-12-21
1983-11-29
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
251231, 251292, 166334, 175218, F16K 3700, F16K 3144
Patent
active
044176007
ABSTRACT:
A manually operated valve. The valve has a housing with a uniform outside diameter compatible with the outside diameter of flow conductors attached to the valve. An operating sleeve is movable longitudinally within the housing by engagement with a shifting tool from the exterior of the housing. The operating sleeve shifts the valve between its open and closed positions. A detent spring is provided to give an indication when the shifting tool has moved the operating sleeve sufficient to fully open or close the valve. The valve is particularly adapted for using in a drill string or workover string in an oil or gas well.
Chambers A. Michael
Felger Thomas R.
Otis Engineering Corporation
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