Pallet rack

Claim 1

In a vertically adjustable pallet rack having at least four rectangularly spaced vertical support posts and pairs of spaced horizontal shelf beams mounted between corresponding pairs of said posts, each said post having a front wall and rearwardly extending side walls facing each other, the combination comprising: a. a post-to-beam connector fixed to the end of each horizontal shelf beam, said connector having a first wall attached to the shelf beam; b. a second wall laterally spaced from said first wall; a bridge wall connecting said first and second walls; d. means defining two vertically disposed series of keyhole shaped apertures in the front wall of each post, said series being spaced from each other and from the side walls of the post, e. each said aperture having a relatively wide upper portion of generally circular shape and a narrower lower portion defined by a vertical side adjacent the central portion of said post and an inclined side tapering downwardly to an arcuate bottom wall portion connecting said vertical and inclined sides; f. at least two vertically spaced hooks defined in said second wall of said connector for engagement with the apertures of the post, said hooks lying in a common plane; g. each said hook having a throat and a bulbous projection above said throat adapted to engage the vertical wall of the aperture while said throat engages the arcuate bottom wall portion of the aperture at a point spaced vertically below said bulbous projection on the opposite side of said hook therefrom above the bottom of the aperture in a direction generally normal to said arcuate bottom wall portion; and h. said first wall of said connector defining a clearance space with respect to the side of said post when said connector is attached to said post.