Interlocking storage pallet

Claim 1

An integrally molded plastic pallet comprising a pair of generally planar load bearing surfaces (1) and (2), disposed in spaced parallel opposed relationship to one another, the surfaces comprised of a plurality of parallel rib members (3), spanning the area between the outer edges of the pallet on the upper and lower surfaces of the pallet, the ribs (3) on the upper and lower surfaces being horizontally displaced relative to each other, a plurality of reinforcing columnar portions (4) located at spaced positions on the surface of the pallet and joining the load bearing surfaces, the portions comprised of at least four generally vertical unitary walls (27), perpendicular to the planar load bearing surfaces and separating the two surfaces, the unitary walls each having a channel shaped rib (28) on at least one end of each wall and a plurality of parallel channel shaped ribs (3) spanning the area between the unitary vertical walls (27) on the upper and lower surfaces of the pallet, the spanning ribs (3) being horizontally displaced relative to each other, and the columnar reinforcing portions (4) having protuberance means (7) and recess means (18) on the surfaces at corresponding positions to provide interlocking of a plurality of such pallets in stacked relation wherein lateral relative displacement of adjacent pallets is prevented.