Pressure responsive cap for gas appliances

Details Pressure responsive cap for gas appliances Pressure responsive cap for gas appliances

1983-01-24

1985-05-21

Walton, George L.

Fluid handling

Combustion failure responsive fuel safety cut-off for burners

236 99R, 251 25, 431 85, F23D 516

Patent

active

045180032

ABSTRACT:
The invention relates to a pressure responsive assembly for controlling the supply of gas to a gas appliance. A pressure responsive device includes a sealed air bulb positioned to monitor the pilot flame of the appliance. A capillary tube connected at one end to the sealed bulb has its other end supported in the central channel of a small plug. An expandable diaphragm or membrane, having a central aperture aligned with the axis of the plug, is disposed to bear against a button member positioned between the diaphragm and an actuating lever set to control operation of a gas supply valve. The button member is shaped with channels, grooves or apertures to establish a through air connection between the capillary tube and external air when the diaphragm is in a deflated condition.

REFERENCES:
patent: Re20835 (1938-08-01), Spencer
patent: 2217419 (1940-10-01), Saul
patent: 2704648 (1955-03-01), Cobb
patent: 2746471 (1956-05-01), Cobb
patent: 3204686 (1965-09-01), Thomson

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