Valve having mechanism for diverting reverse gas flow

Details Valve having mechanism for diverting reverse gas flow Valve having mechanism for diverting reverse gas flow

2006-04-25

2006-04-25

Basichas, Alfred (Department: 3749)

Combustion

Flame holder and fuel tank assembly

C431S346000, C431S153000, C137S625260

Reexamination Certificate

active

07033166

ABSTRACT:
The present invention is to provide a valve with a safety mechanism for diverting reverse gas flow being mountable in a gas lighter wherein a shoulder is formed around a mouth proximate a forward opening of a sleeve and is spaced apart from the forward opening by a predetermined gap when an actuation member is not pressed, the actuation member is pressed to lift a leakproof nut at a bottom of the mouth for opening a bottom hole of a seat to permit gas to flow into the valve, the shoulder then contacts the forward opening for blocking gas flow and direct the gas flow to a nozzle through a hose for ignition. Thus, after the actuation member being released, the gas remaining in the hose will flow back and leak through the gap and the forward opening to the outside because the gas pressure in the hose is larger than the outside pressure.

REFERENCES:
patent: 4251226 (1981-02-01), Nishikawa
patent: 5407348 (1995-04-01), Mims et al.
patent: 5735684 (1998-04-01), Tsai
patent: 6171098 (2001-01-01), Meyer et al.
patent: 6884063 (2005-04-01), Wong

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