Position indicator for on/off valves

Details Position indicator for on/off valves Position indicator for on/off valves

1995-08-22

1997-02-25

Look, Edward K.

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

116215, 116277, F16K 3700

Patent

active

056051760

ABSTRACT:
A valve position indicator for on/off valves includes a card having red and green sectors journalled in a housing, and gravity biased to remain stationary during rotation of the housing about a non-vertical axis. A cover of the housing overlies the card and includes a window through which either the red or green sector is visible. The device may be mounted within a recess of the handle of an on/off valve to indicate correct and incorrect positioning of the valve. The valve is in the correct position when the green sector appears on the window and is incorrectly positioned when the red sector appears in the window. A locking tab projects from the housing and is received within one of two detents of the valve handle to align the window with either the red or green sector, respectively, when the handle is moved to the open position and vice versa.

REFERENCES:
patent: 1312303 (1919-08-01), Berry
patent: 2104520 (1938-01-01), Jackson et al.
patent: 2104521 (1938-01-01), Jackson et al.
patent: 2617381 (1952-11-01), Insul
patent: 2820477 (1958-01-01), Dorsak et al.
patent: 2930343 (1960-03-01), Derrick

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