Patent 10021887 was granted and assigned to Masterbuilt Manufacturing on July, 2018 by the United States Patent and Trademark Office.
A stand-alone gas-fired smoker constitutes a cabinet for holding food products to be cooked. A gas burner in the bottom of the cabinet is connected to a source of flammable gas by means of a variable gas valve. The gas burner heats the cabinet and thereby cooks the food products. An oil filled temperature sensing bulb is connected by means of a capillary tube to the variable gas valve in order to modulate the gas delivered through the variable gas valve to the gas burner and thereby modulate the temperature within the cabinet. A safety/ignition valve is connected between of the gas source and the variable gas valve. The safety/ignition valve is connected to a flame sensor, and the safety/ignition valve closes if the flame sensor senses that the gas burner has been extinguished.