US Patent 7401441 Channeled floor covering

A floor covering main body comprising an intermediate channeled surface. A plurality of non-contiguous but adjacent lugs extends upwardly from the intermediate channeled surface. A substantially planar composite upper surface is disposed above the intermediate surface and is defined by the top surfaces of the lugs. The intermediate channeled surface carries or channels liquid away from the upper walking surface. A plurality of floor covering main bodies can be aligned to form a flooring system. In another configuration, some or all of the lugs may be contiguous.