Inner air vent systems for float chambers in carburetors

Details Inner air vent systems for float chambers in carburetors Inner air vent systems for float chambers in carburetors

1987-02-24

1988-03-01

Miles, Tim

Gas and liquid contact apparatus

Fluid distribution

Liquid supply tank

261DIG67, 55DIG28, F02M 508

Patent

active

047284676

ABSTRACT:
An inner air vent system for internal combustion engines is disclosed which prevents accidental flush of fuel from the float chamber into the venturi tube of the carburetor as when the vehicle is running on a steep slope or extremely rough surface. The inner air vent system comprises an air passage axially defined in the mounting bosses of the air cleaner, air intake pipe and carburetor, with the air cleaner being located above the carburetor. The air passage has a lower end thereof opened into the air gap inside the float chamber. With this arrangement, tilt of the vehicle even into an extreme position is unlikely to permit the flow of fuel from the float chamber into the carburetor venturi tube, because of the air passage having its upper opening held high enough above the fuel level in the float chamber. Furthermore, the inner air vent system can be constructed without the addition of extra joints and piping work, there is no significant increase in assembling cost. In addition, the system is very simple in structure, it can be incorporated in a small, lightweight engine.

REFERENCES:
patent: 2153069 (1939-04-01), Barr et al.
patent: 2921775 (1960-01-01), Moseley
patent: 3194224 (1965-07-01), Lechtenberg et al.
patent: 3778024 (1973-12-01), Rogerson
patent: 4134378 (1979-01-01), Kingsley
patent: 4233043 (1980-11-01), Catterson

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