Abstract: A support assembly including a clamp assembly and support bar designed to be removably mounted in one of a plurality of vertically oriented slots in a mounting panel wherein a clamp assembly includes a keeper bar dimensioned and configured for placement on the interior pocket portion of one of the slots in movable, cooperative relation to a force distribution plate disposed in flush, abutting engagement with the exterior surface of the mounting panel and in overlapping relation to an entrance or throat portion of the slot, the latter being of lesser width than the pocket portion as well as the length of the keeper bar to prevent inadvertent removal therefrom. A connecting element interconnects the keeper bar to the fourth plate wherein relative movement therebetween provides a clamping action on the mounting panel in the area of the entrance to the vertical slot.

Abstract: In combination, a vertically slotted panel wherein the vertical slots provide a constricted throat entrance and an internal enlarged pocket to captivatingly nest a keeper which is sized and arranged for limited rotation in the pocket into and out of locking engagement with the side walls of the pocket and which constitutes a clamp member by reason of a screw extending through it and through a force distribution plate sized to overlay the throat margins and from which a support arm extends perpendicularly to the panel so that it is adapted to be tightened into clamping relation in any of a wide variety of locations on the panel by means of screws.