Quick detachable hinging structure

Claim 1

A cover and mounting structure therefor for releasable attachment of the cover to the bed of a pickup truck, said bed having two side walls joined by a front wall with each side wall including a horizontal top, a pair of substantially vertical and opposite facing surfaces, and an inside horizontal underside surface and said front wall having top and forward surfaces, including: a pair of separate elongated mounting brackets, one for mounting on each side wall of the bed and each including separate surfaces abutting said bed side wall, vertical, horizontal top and horizontal underside surfaces, said horizontal surfaces on each said bracket being separated a fixed distance and separate members extending across the top surface of the front wall and down along the forward surface thereof; means for releasably interlocking one edge of said cover and corresponding ends of said elongated brackets mounted on the respective side walls and the front wall for allowing pivotal motion therebetween; a pair of coil springs, each having two ends; means for releasably attaching one end of each coil spring to said cover and the other coil spring end to a mounting bracket whereby the mounting brackets can be placed on the respective bed side wall and front wall, the cover and brackets joined by the releasable interlocking means and the coil springs connected to the cover and mounting brackets to hold the brackets on the bed side walls thereby fastening the cover on the bed.