Gas and liquid contact apparatus – Fluid distribution – Valved
Patent
1989-07-12
1990-12-25
Miles, Tim
Gas and liquid contact apparatus
Fluid distribution
Valved
261 781, F02M 902
Patent
active
049800973
ABSTRACT:
A carburetor of the slide and metering rod type is characterized by the provision of a device for obstructing reverse or backflow air from the outlet end of the carburetor body from passing the metering rod in order to prevent the backflow air from contaminating or from drawing excess fuel into the air/fuel mixture. The obstruction device may comprise either a flanged tubular collar arranged within the outlet end or a tapered surface of an insert arranged adjacent the carburetor throttle slide member. Alternatively, the body may comprise a plurality of rearwardly and inwardly extending recesses near the outlet end thereof for preventing the flow of contaminated backflow air past the metering rod. Openings may be provided in the obstruction devices for reverting the backflow air into the flow of the air/fuel mixture rearwardly of the metering rod and toward the outlet end of the carburetor.
REFERENCES:
patent: Re31475 (1983-12-01), Edmonston
patent: 1971494 (1934-08-01), Lesage
patent: 3326539 (1967-06-01), Phipps
patent: 3382853 (1968-05-01), Kinoshita
patent: 3467072 (1969-09-01), Toesca
patent: 3738336 (1973-06-01), Holland
patent: 3746320 (1973-07-01), Van Camp et al.
patent: 3814391 (1974-06-01), Cedarholm
patent: 3985839 (1976-10-01), Edmonston
patent: 4013741 (1977-03-01), Edmonston
patent: 4442046 (1984-04-01), Edmonston
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