Position indicator for rising stem valve

Details Position indicator for rising stem valve Position indicator for rising stem valve

1982-06-21

1986-02-11

Chambers, A. Michael

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

137556, 116277, F16K 3700

Patent

active

045693668

ABSTRACT:
A rising stem valve includes a scale plate attached to the stem and rising with the stem. A stationary reference mark on the valve bonnet indicates the degree of opening of the valve on the scale plate. The scale plate is rotatable around the valve stem to permit viewing from any position.

REFERENCES:
patent: 171071 (1875-12-01), Wallace
patent: 188154 (1877-03-01), Leavitt et al.
patent: 486610 (1892-10-01), Giles
patent: 575848 (1897-01-01), O'Brien
patent: 577147 (1897-02-01), Paul
patent: 1195429 (1916-08-01), Action
patent: 1678409 (1928-07-01), Bowland
patent: 1799143 (1931-04-01), Bailey
patent: 2234052 (1941-03-01), Luenz
patent: 2239842 (1941-04-01), Evans
patent: 2646767 (1953-07-01), Hanson
patent: 2768604 (1956-10-01), Enerud
patent: 3183926 (1965-05-01), Boudot
patent: 3565089 (1971-02-01), Thompson

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