Fluid storage tank
OwnerWilliam T. Cuttsinventor
Life of this patent
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Abstract
An improved fluid storage tank of the type having a bottom, side walls and a floating roof. A plurality of first support legs extend upwardly from the bottom. A plurality of second support legs extend from the floating roof. A power device attached to the floating roof is provided to rotate the roof between a first position in which the first and second support legs are not aligned, allowing the roof to be supported at a first elevation, and a second position in which the first and second support legs are aligned, allowing the roof to be supported at a second elevation.
Claims12
An improved fluid storage tank of the type having a bottom, side walls and a floating roof in which the improvement comprises support means for selectively supporting said floating roof at a first elevation above said bottom and a second elevation above said bottom, independently of the fluid in said tank, said support means comprising:
- a plurality of first support legs attached to said bottom and extending vertically upward therefrom;
- a plurality of second support legs attached to said floating roof and extending vertically therefrom;
- and
- means for rotating said floating roof about a central axis thereof between a first position in which said first and second support legs are not vertically aligned, allowing said roof to be supported on said support means at said first elevation, and a second position in which corresponding ones of said first and second support legs are vertically aligned, allowing said roof to be supported on said support means at said second elevation.
Dependencies are inferred from the claim text.