Valves and valve actuation – With friction detent
Patent
1986-12-22
1988-01-12
Chambers, A. Michael
Valves and valve actuation
With friction detent
251208, F16K 3100
Patent
active
047186380
ABSTRACT:
A compact gas flow control valve has a valve body having an inlet for receiving gas pressure, to provide gas at a substantially constant delivery pressure to be delivered by the gas flow control valve, and an outlet for delivery of the gas. Flow rate of the delivered gas is controlled by a rotor. A flow control plate covering the rotor has a plurality of orifices produced by one of various processes including mechanical drilling, laser drilling, piercing, punching, and selective etching. A selector mechanism orients the rotor to permit flow only through a selected one of said orifices at such delivery pressure for delivery by the outlet. The etched orifices define a preselected schedule of different flow rates determined by the diameter of the respective orifices. The control valve is positioned by a shaft and flow control knob having a positive detent mechanism for preventing stable orientation in a position other than for selected flow control.
REFERENCES:
patent: 690112 (1901-12-01), Kull
patent: 756492 (1904-04-01), Gold
patent: 1315054 (1919-09-01), Teisseire
patent: 1611940 (1926-12-01), Ohmer
patent: 2616503 (1952-11-01), Armentrout
patent: 3332439 (1967-07-01), Burke
patent: 4235258 (1980-11-01), Uno et al.
patent: 4275867 (1981-06-01), Schils
Nurre Harry
Phlipot James R.
Pinkston Steve R.
Chambers A. Michael
Essex Industries, Inc.
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