Patent ID: 9683526
Date: 2017-06-20
CPC Classifications: F02M

Claim:
1. A canister comprising: a casing provided with a cylindrical case member having one end closed as a bottom portion and another end opened as an opened portion, and a cylindrical bottom case member closing the opened portion of the cylindrical case member, the casing being formed with a fuel vapor introducing port, a purge port and an air communication port; an adsorbent material disposed within the cylindrical case member; a pad member disposed between the adsorbent material and the cylindrical bottom case member; a grid member disposed between the adsorbent material and the cylindrical bottom case member, the pad member and the grid member being laminated as a lamination layer; and an air ventilation path formed to the grid member so as to extend in axial and radial directions of the casing in a meandering manner, wherein the grid member includes: wherein the bottom surface portion is formed with a plurality of first openings and a plurality of second openings so as to extend along a circumferential direction thereof and also formed with an intermediate wall portion so as to extend in parallel with the side surface portion thereof, in which the intermediate wall portion has a length shorter than that of the side surface portion in an axial direction of the grid member.