Patent ID: 7267112

Claim:
An internal combustion engine, comprising: a carburetor having an intake air passage, and a fuel chamber in fluid communication with said passage, said chamber containing a volume of liquid fuel and an air space; a fuel tank in fluid communication with said fuel chamber, said fuel tank containing a volume of liquid fuel and an air space; and a fuel vapor control device including a housing containing fuel vapor absorbent media and having a substantially elongate profile along an axis, said housing defining first and second ends and a central portion therebetween, said carburetor passage in fluid communication with one of said first and second ends and the other of said first and second ends in fluid communication with the atmosphere, at least one of said carburetor air space and said fuel tank air space in fluid communication with said central portion of said housing at a location on said housing disposed axially in between said first and second ends; whereby fuel vapors collect within said fuel vapor absorbent media initially within said central portion of said housing and thereafter outwardly toward said first and second ends, and passage of air through said carburetor passage induces a flow of air from the atmosphere axially through said housing to said carburetor passage to purge fuel vapors from said housing.