Patent ID: 7386959

Claim:
A frame assembly comprising: first and second frame halves, each including an inner frame portion, an outer frame portion, and an axially projecting attachment rib axially aligned with the attachment rib of the other frame half and terminating axially in a free edge remote from said inner and outer frame portions; a plurality of spaced locking ribs, each said locking rib extending longitudinally along a portion of the attachment rib of the first frame half, substantially in parallel to said free edge of said attachment rib and remote from said inner and outer frame portions thereof; and a clip structure projecting axially from the attachment rib of the second frame half, said clip being separately formed from said frame halves and being secured to said second frame half, said clip defining first and second axially open U-shaped receptacles for axially receiving respectively said attachment rib of said first frame half and said attachment rib of said second frame half, thereby to secure said frame halves together in axially opposed, facing relation, wherein said clip is formed by stamping and forming a metal plate, wherein each of said U-shaped receptacles comprises first and second legs, said first leg comprising a frame of material surrounding an opening and said second leg being laterally offset by a base segment from and disposed in opposed facing relation to said opening.