Patent ID: 8551231

Claim:
A vaporized fuel treatment apparatus that is attached to a filler neck of a fuel tank for use and adsorbs vaporized fuel from the fuel tank, comprising: a housing attached to the filler neck; and a cover member provided on an open end of the housing, wherein, using a partition wall member housed in the housing as a boundary, a gas-liquid separation chamber is defined on a side of the filler neck and a fuel adsorption chamber housing an adsorbent is defined on a side of the cover member, a wall portion that defines a conduction passage within the fuel adsorption chamber, the wall portion being formed on at least one of the cover member and the partition wall member, and the vaporized fuel from the fuel tank is led from the gas-liquid separation chamber into the fuel adsorption chamber through a through hole formed in a central portion of the partition wall member, and then led to an outer peripheral portion of the housing, which communicates with the outside, through the conduction passage in the fuel adsorption chamber.