Patent ID: 8214974

Claim:
A clip fastener for attaching gaskets and gasket-like devices to a mounting surface consists of a single strand of resilient metal wire, said fastener comprising a mounting surface engagement head, a neck and an annular base perpendicular to the plane of the head and attached to the neck; the head with an apex and a pair of shoulders extended from the apex to the shoulders, wherein one of the shoulders twists into an end of the metal wire and the other one of the shoulders twists inward to be an adjacent point to the end of the metal wire, forming into the neck at the thinnest portion of the shoulders; a portion of the metal wire connecting the neck and the base is slightly tilted downwards from the neck and forms an acute angle with the plane of the base and then the metal wire helically winds into the annular base, the neck is spaced apart from and above the base; there are wave shaped protrusions on the base, and the plane of protrusions is perpendicular to the base; another end of the wire close to a beginning of the base annulus but left with space is in the same plane as the base.