Patent ID: 6439548
Filing Date: 2002-08-27
Classification: F02M,Y10S

Abstract:
In a carburetor having a float chamber and a float provided in said float chamber wherein the amount of fuel flowing into said float chamber is adjusted according to behavior of said float to thereby form a constant fuel level in said float chamber; an overflow device comprising:an overflow pipe having an upper end opening exposed to a space in said float chamber defined above said constant fuel level; and a shield member arranged above said constant fuel level and having a side wall extending along an upper end portion of said overflow pipe between an upper position above said upper end opening and a lower position below said upper end opening so as to define a shielded space around said upper end opening; said shielded space being kept in communication with said space in said float chamber through a fuel opening for allowing the fuel to flow into and out of said shielded space and a vent opening capable of suppressing the entry of the fuel into said shielded space; said fuel opening being positioned below said upper end opening; and at least a part of said vent opening being positioned above said upper end opening.