Patent ID: 8177894
Filing Date: 2012-05-15
Classification: F02M

Abstract:
1. A canister comprising: a canister case having an adsorbent chamber; an adsorbent housed in the adsorbent chamber of the canister case; a filter disposed between the adsorbent chamber and a port mounted on an end wall of the adsorbent chamber, and adapted to be loosely fitted within the adsorbent chamber in welding of the filter; and a tentative filter engaging projection provided in the adsorbent chamber for tentatively holding the filter loosely fitted within the adsorbent chamber; wherein the tentative filter engaging projection is formed in a rib shape extending along an axial direction on an inner wall surface of the adsorbent chamber; and wherein the extending length of the tentative filter engaging portion from the inner wall surface is set such that a circumferential edge of the filter can elastically contact with the tentative filter engaging portion.