Patent ID: 7610731

Claim:
A floor structure unit, comprising: a. a tray, further comprising: i. an upper horizontal surface; ii. a lower horizontal surface; iii. at least one retaining wall extending vertically from either of the horizontal surfaces; iv. a first set of interlocking members; and v. a second set of interlocking members, wherein the first set of interlocking members and the second set of interlocking members are contrapositive; b. a flooring material disposed on the tray upper horizontal surface such that the first set of interlocking members is substantially flush with the flooring material and the second set of interlocking members extends beyond the flooring material; c. a rubber matrix disposed in the tray lower horizontal surface; and d. a rubber grommet disposed about the perimeter of the at least one retaining wall, wherein the rubber grommet and the rubber matrix are a unitary piece.