Importance

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Abstract

An internal-combustion type of gas lighter is provided including a cylindrical lighter housing enclosing a lighter body having a fuel gas reservoir therein; a fuel gas ejection nozzle in communication with the fuel gas reservoir via a valve; a lid permitting ignition of a combustible mixture when open and preventing ignition when shut; an orifice member positioned downstream of the fuel gas ejection nozzle to increase the flow rate of fuel gas ejected from the fuel gas ejection nozzle; a mixing tube positioned downstream of the orifice member, the mixing tube having air injection apertures to suck air under a negative pressure caused by a jet flow of fuel gas from the orifice member, thereby providing a fuel gas-and-air combustible mixture; a diffuser positioned downstream of the mixing tube to decrease the flow rate of the combustible gas mixture and to diffuse the combustible mixture; an ignition actuator to operate a piezoelectric element for igniting the combustible mixture; a combustion cylinder positioned downstream of the diffuser to permit the complete combustion of the combustible mixture therein; a flame controller which controls the flow rate of the fuel gas supplied to the combustion cylinder; and an air injection controller, adjustable independently of the flame controller, for controlling the amount of air to be fed to the mixing tube, the air-injection controller having a thumb ring rotatably fixed to the cylindrical housing and operatively connected to an adjustable, apertured piece, rotatably fitted surrounding the mixing tube, and adjustable to place an aperture thereof in alignment with an air-injection aperture of the mixing tube.

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First Claim