| 摘要 |
<p>Canadian Case 2192 An air filter bag is disclosed for use in vacuum cleaners. The filter bag includes a plastic collar having an annular peripheral rim or skirt extending both axially away from a body portion of the bag and inwardly toward the axis of the body portion for cooperation with a flanged air duct for retention and sealing purposes. The collar also includes an annular sealing lip spaced radially inward of the rim for cooperation with the air duct for sealing purposes thereby providing the collar with a dual sealing arrangement. In order to facilitate removal of the filter bag from a flanged air duct, the collar is provided with a tab portion integrally attached to the rim.</p> |
