Patent ID: 6932328

Claim:
An adapter attached to an elongated rail having an undercut groove facing a structure on which the rail is to be mounted to a support therefor including a rotatable locking cam portion that is rotatable between unlocked and locked rotational positions, said adapter comprising: an extended portion adapted to be received in the undercut groove on the rail, the extended portion being movable between an unlocked position in which it can enter the undercut groove and a locked position in which it engages walls of the undercut groove to lock the rail to the adapter; and an undercut recess facing the support, the undercut recess having a size and shape such that, when the locking cam portion is in the unlocked rotational position, it can enter the undercut recess and such that, when the locking cam portion is in the locked rotational position, it causes the extended portion of the adapter to move from the unlocked position to the locked position and thereby retain the rail against displacement relative to the support.