Hand gas torch

Details Hand gas torch Hand gas torch

1997-08-21

1998-04-21

Yeung, James C.

Combustion

Electrical or mechanical igniter correlated with burner feed

Having electric current producer

431344, 126407, 126413, F23Q 712

Patent

active

057411280

ABSTRACT:
A hand gas torch which includes a fuel gas tank having a gas outlet, gas flow rate control valve assembly mounted in the gas outlet of the fuel gas tank and controlled by a gas lever to open a fuel gas passage, a casing fastened to the fuel gas tank around the gas outlet, a flame nozzle assembly fastened to the casing at which fuel gas and air mixture is burned, a fuel gas nozzle assembly connected between the flame nozzle assembly and the gas flow rate control valve assembly, a piezoelectric device mounted in the casing and controlled to produce sparks at the flame nozzle assembly for burning fuel gas and air mixture, a press button depressed to trigger the piezoelectric device and to drive the gas lever in opening the gas flow rate control valve assembly, a rotary cap controlled to lock/unlock the press button, and a switch controlled to hold the gas flow rate control valve assembly in an open status.

REFERENCES:
patent: 3597732 (1971-08-01), Yoshinaga
patent: 4804324 (1989-02-01), Yoshinaga
patent: 5505614 (1996-04-01), Lin
patent: 5531592 (1996-07-01), Tsai
patent: 5564919 (1996-10-01), Tsai
patent: 5573393 (1996-11-01), Tsai
patent: 5647738 (1997-07-01), Tsai

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