B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
20/15.1
B65D 90/00 (2006.01) B65D 90/04 (2006.01)
Patent
CA 2038114
CRP/M-1172 PATENT DOUBLE CONTAINMENT TANK LINE SYSTEM Alan R. Lasson ABSTRACT OF THE DISCLOSURE A plastic liner sheet is positioned between an outer bottom wall and an inner bottom wall of a dual wall tank providing uniform spacing and a degree of support. The liner sheet is molded with integral spacer elements in the form of semi-spherical bosses extending from the top and bottom surfaces of the liner sheet. Equilaterally positioned depressions surround each boss so that a boss on one side forms a depression on the opposite side and vice versa. The support function is augmented by providing a series of steel balls which are placed in selected depressions dependent on the expected loading on the tank bottom from the weight of the tank and its contents. The inner tank bottom may be constructed by butt welding a series of steel plates of desired shape to form the tank floor with weld backing plates resting on the liner top and supported by a linear line of the spaced steel balls in a spaced number of linearly aligned depressions.
Baker Hughes Incorporated
Lasson Alan R.
Smart & Biggar
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