Patent ID: 7491025

Claim:
A fastener for releasably securing a first substrate to a second substrate having an aperture formed therein, the second substrate further having at least one boss extending outwardly therefrom adjacent the aperture and a detent formed in the at least one boss comprising: a base member having a generally flat top wall and being configured to be mounted to the first substrate; a locking member having a generally flat bottom wall positioned adjacent the generally flat top wall of the base member and being mounted for rotation relative to the base member between an insertion position for insertion of the base member and the locking member through an aperture formed in the second substrate and a locking position for releasably securing the first and second substrates together upon rotation of the locking member relative to the base member; a resilient member operable to bias the locking member toward the base member upon compression of the resilient member; at least one detent extending inwardly from the generally flat top wall of the base member; and at least one protrusion extending outwardly from the generally flat bottom wall of the locking member, wherein the at least one detent of the base member and the at least one protrusion of the locking member are configured to releasably engage in the insertion position of the locking member and disengage upon rotation of the locking member relative to the base member toward the locking position, and further wherein the at least one protrusion of the locking member is configured to releasably engage with the detent of the at least one boss upon rotation of the locking member to the locking position.