Patent ID: 7377474

Claim:
In a separable magnetic assembly for reversibly securing an object to a ground attachment surface, the assembly including a housing, at least one magnet disposed within the housing, a fastening assembly adapted to couple an object to the housing, and a base plate for being coupled to the ground attachment surface and reversibly receiving the at least one magnet disposed in the housing, the base plate comprising: (a) a circular body capable of carrying a magnetic current, the circular body having a beveled outer perimeter sidewall, a substantially planar upper surface, and a substantially planar base surface opposing the substantially planar upper surface, wherein the beveled outer perimeter sidewall is a linear bevel tapering outwardly between an outer edge of the substantially planar upper surface and an outer edge of the substantially planar base surface; (b) a centrally-located opening extending through the circular body from the substantially planar upper surface to the substantially planar base surface, the centrally-located opening sized and configured for receiving a bolt downwardly extending from the magnetic assembly, wherein the substantially planar upper surface extends between the beveled outer perimeter sidewall and the centrally-located opening, and wherein the shortest distance on the substantially planar upper surface from the beveled outer perimeter sidewall to the centrally-located opening is equal to or greater than the greatest distance across the centrally-located opening; and (c) the substantially planar upper surface having a non-skid surface.