Patent ID: 8740005

Claim:
An injection molded plastic tank having an interior for containing fluids comprising: (a) a first injection molded plastic half tank comprising a concave wall having an edge with a first flange running therealong; (b) a second injection molded plastic half tank having a concave wall and comprising an edge with a second flange running therealong; each flange having a first surface for mating with the flange of the other half tank; a second surface spaced apart from the first surface by the thickness of the flange; and, a multiplicity of nubs spaced apart along said second surface, each nub having a free end spaced apart from said second surface; wherein the flanges of the half tanks are mated to each other and the mated half tanks thereby define said tank interior and wherein said multiplicity of nubs on each of the mated flanges form a plurality of mated nub pairs; and, (c) a multiplicity of clamps, each clamp having (i) a C-shape cross section body having an interior concavity extending along a length axis thereof; (ii) opposing side grooves running lengthwise within the interior concavity of the C-shape cross section body, each groove having a groove bottom, and (iii) a first inwardly flared portion running between said grooves and transverse to the length of the clamp at one lengthwise end of the clamp for enabling lengthwise engagement of said clamp with a mated nub pair; wherein each clamp is twistable lengthwise in a plane parallel to said flange first surface when the clamp is partially engaged with a mated nub pair; and wherein each clamp is engaged with a mated nub pair, thereby holding fixedly to each other said half tank flanges.