Valve control for back draft carburetor

Details Valve control for back draft carburetor Valve control for back draft carburetor

1988-04-04

1989-06-06

Miles, Tim

Gas and liquid contact apparatus

Fluid distribution

Systems

261 721, 261DIG67, F02M 508

Patent

active

048365068

ABSTRACT:
A back draft carburetor of the type in which a vacuum source in the throat of a carburetor is communicated to the air space above the fuel in the float bowl of the carburetor includes a valve disposed between the vacuum source and the float bowl. At low vacuum levels in the carburetor throat, the valve is in a closed position in which the vacuum in the carburetor is sealed off from the float bowl. Upon sensing a higher vacuum level, the valve moves to an open position which allows the vacuum in the carburetor throat to be communicated to the air space in the float bowl.

REFERENCES:
patent: 1010184 (1911-11-01), Schulz
patent: 2029142 (1936-01-01), Wemhoner
patent: 2701709 (1955-02-01), Brunner
patent: 3058728 (1962-10-01), Ruth
patent: 3307837 (1967-03-01), Winkler
patent: 3796413 (1974-03-01), Woods
patent: 3831910 (1974-08-01), Shadbolt
patent: 4040399 (1977-08-01), Meininger
patent: 4283356 (1981-08-01), Arai et al.
patent: 4376738 (1983-03-01), Reinmuth

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