Patent ID: 7404839

Claim:
A device for adapting a cover for an existing air filter assembly to seal an end portion of a replacement cylindrical air filter having a round cross-sectional shape wherein the cover includes a plate having a radially inner convex guide separated from a radially outer convex guide by a concave receiver, a tightening member connected to the plate, and a catch having a first end movably connected to the tightening member, and the catch having a second end configured to engage a keeper, the tightening member adjustable to vary a distance between the catch and the plate, the device comprising: an adaptor attachable to the plate of the cover, the adaptor comprising: a first side for engagement with the plate; and, an opposing second side for engagement with an end portion of a cylindrical filter and having a sealing surface extending radially inwardly from a peripheral edge, the sealing surface having a sufficient area to overlap a portion of the radially inner guide of the plate and a portion of the receiver when the adaptor is attached to the plate wherein the adaptor can be caused to seal the end portion of the cylindrical filter.