Ignition plug with air passage and double check valve

Electric lamp and discharge devices – Spark plugs – With fluid feed or air vent

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137512, H01T 1302, F16K 1500

Patent

active

045132208

ABSTRACT:
An ignition plug provided with a tubular center electrode through which open air is introduced into the engine cylinder to accelerate exhaust of the combustion gas from the cylinder in the exhaust stroke of an engine cycle. The tubular electrode has a double-check valve fitted therein to prevent leakage of the high-pressure gas from the cylinder when the cylinder pressure is above the ambient pressure. The valve is composed of two differently-weighted floats serially disposed in the center electrode, one of the floats being in operative position even if the other resonates with engine vibration.

REFERENCES:
patent: 2059257 (1936-11-01), Letterman
patent: 2903014 (1959-09-01), Sheppard
patent: 3043281 (1962-07-01), Candelise
patent: 4139469 (1979-02-01), Rainin et al.
patent: 4282897 (1981-08-01), De Mey
patent: 4392507 (1983-07-01), Harris

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