US4018356A — Floating deck for liquid storage tank

Claim 1

Independent Claim 130 words

In a floating deck for use in a liquid storage tank, a generally circular planar platform formed of a plurality of interconnected modular units made of cellular foam plastic, said modular units being of different shape and including at least: a first series of panels, each being in the form of a truncated triangle; a second series of panels, each having a shape including at least a parallelogram portion and a small triangular-shaped portion outwardly projecting from one side of said parallelogram portion at the upper end thereof; said small triangular-shaped portion having a dimension corresponding to the truncated portion of said truncated triangle of said first series of panels so as to form a continuous platform when said first and second series of panels are interconnected to one another.

Claim 2

Dependent Claim 130 words

In a floating deck for use in a liquid storage tank, a generally circular planar platform formed of a plurality of interconnected modular units made of cellular foam plastic, said modular units being of different shape and including at least: a first series of panels, each being in the form of a truncated triangle; a second series of panels, each having a shape including at least a parallelogram portion and a small triangular-shaped portion outwardly projecting from one side of said parallelogram portion at the upper end thereof; said small triangular-shaped portion having a dimension corresponding to the truncated portion of said truncated triangle of said first series of panels so as to form a continuous platform when said first and second series of panels are interconnected to one another.

Claim 3

Dependent Claim 61 words

In a floating deck as defined in claim 1, the shape of said second series of panels further includes an upper portion defining a truncated triangle corresponding in shape to that of said truncated triangle of said first series of panels; the truncated part of said truncated triangle of said upper portion having a dimension corresponding to that of said small

Claim 4

Dependent Claim 123 words

triangular-shaped portion of said second series of panels. 3. In a floating deck as defined in claim 1, further comprising a third series of panels, each defining a parallelogram shape and including: a. two longitudinally spaced small triangular-shaped portions on one side thereof; said small triangular-shaped portions of said third series of panels each having a dimension corresponding to the small triangular-shaped portion of said parallelogram portion of said second series; b. a small triangular-shaped recess on the opposite side of said panel in the mid-portion thereof, said triangular-shaped recess having a dimension corresponding to the small triangular-shaped portions of any of the previously recited panels whereby said small triangular-shaped portions of any of the previously recited panels may be fittingly received therein.

Claim 5

Dependent Claim 74 words

In a floating deck as defined in claim 1 comprising a further series of panels, each having a shape defining a parallelogram including at least: a. a small triangular-shaped portion outwardly projecting from one side thereof at the upper end thereof; b. a small triangular-shaped recess provided on the opposite side of said parallelogram at the upper end thereof; said portion and said recess having a shape corresponding to similar triangular-shaped portions on any

Claim 6

Dependent Claim 24 words

of the previously recited panels. 5. In a floating deck as defined in claim 1, further comprising a layer of asbestos sheets covering said

Claim 7

Dependent Claim 46 words

modular units and a screen of metal extending over said layer. 6. In a floating deck as defined in claim 5, further comprising metal strips circumferentially spaced at the perimeter of said platform and contacting said screen and said storage tank wall for dissipating static electricity.

Claim 8

Dependent Claim 67 words

. In a floating deck as defined in claim 1, each of said first and second panels including, on one side thereof, male engaging profile means and, on the opposite side thereof, female engaging profile means, said profile means having correspondingly shaped cross-sections whereby adjacent panels may be interconnected in side-by-side arrangement; each said panel further including inter-engaging profile means on bases thereof to connect a base

Claim 9

Dependent Claim 47 words

of one panel to a base of a radially adjacent panel. 8. In a floating deck as defined in claim 7, further comprising end pieces circumferentially disposed on said platform, said end pieces having profiles correspondingly engaging the profile means of the bases of outmost radially disposed

Claim 10

Dependent Claim 23 words

panels. 9. In a floating deck as defined in claim 8, further comprising sealing means disposed circumferentially on said end pieces for providing

Claim 11

Dependent Claim 55 words

an air-tight engagement between the platform and a storage tank wall. 10. In a floating deck as defined in claim 8, further comprising an epoxy adhesive on all sides and bases of at least one of the panels in at least one of said first and second series of panels and on the pieces for

Claim 12

Dependent Claim 74 words

further sealingly securing said panels together. 11. In a floating deck as defined in claim 1, wherein at least one of the panels in at least one of said first and second series of panels are moulded from a rigid hard skin polyurethane closed cell foamed material of low cubic density, each said panel having a planar upper surface and having an undersurface provided with reinforcing protruding rib means; said rib means defining vapor

Claim 13

Dependent Claim 34 words

trapping pockets. 12. In a floating deck as defined in claim 11, further comprising openings provided in said reinforcing rib means to slidably receive therein supporting legs for supporting said platform on the bottom

Claim 14

Dependent Claim 148 words

of the liquid storage tank. 13. In a floating deck for use in a liquid storage tank, a generally circular planar platform formed of a plurality of interconnected modular units made of cellular foam plastics, said modular units being of different shape and including at least: a first series of panels, each being in the form of a truncated triangle; a second series of panels, each having a shape consisting of a. an upper portion defining a truncated triangle; b. a lower portion, continuous with said upper portions, defining a parallelogram; and c. a small triangular-shaped portion extending from one side of said lower portion at the upper end thereof; said small triangular-shaped portion having a dimension corresponding to the truncated portion of said truncated triangle of said first series of panels so as to form a continuous surface when said first and second series of panels are

Claim 15

Dependent Claim 148 words

of the liquid storage tank. 13. In a floating deck for use in a liquid storage tank, a generally circular planar platform formed of a plurality of interconnected modular units made of cellular foam plastics, said modular units being of different shape and including at least: a first series of panels, each being in the form of a truncated triangle; a second series of panels, each having a shape consisting of a. an upper portion defining a truncated triangle; b. a lower portion, continuous with said upper portions, defining a parallelogram; and c. a small triangular-shaped portion extending from one side of said lower portion at the upper end thereof; said small triangular-shaped portion having a dimension corresponding to the truncated portion of said truncated triangle of said first series of panels so as to form a continuous surface when said first and second series of panels are

Claim 16

Dependent Claim 35 words

interconnected to one another. 14. In a floating deck as defined in claim 13, wherein said truncated triangle of said first series of panels, when assembled to said small triangular portion, defines therewith an isosceles

Claim 17

Dependent Claim 33 words

triangle. 15. In a floating deck as defined in claim 13, said small triangular-shaped portion having a dimension corresponding to the truncated portion of said upper portion of said second series of panels.

Claim 18

Dependent Claim 112 words

. In a floating deck as defined in claim 15, further comprising a fourth series of panels, each defining a parallelogram shape and including: a. two small triangular-shaped portions extending from one side thereof; said small triangular-shaped portions of said fourth series of panels each having a dimension corresponding to the small triangular-shaped portion of said second series of panels; b. two small spaced triangular-shaped recesses on the opposite side of said panel, said triangular-shaped recesses each having a dimension corresponding to the small triangular-shaped portions of the any of the previously recited panels whereby said small triangular-shaped portions of any of the previously recited panels may be received in said recesses.

Claim 19

Dependent Claim 54 words

In a floating deck as defined in claim 15, further comprising a third series of panels, each defining a parallelogram shape and further including a small triangular-shaped portion extending from one side thereof adjacent the upper end thereof, said small triangular-portion of said third series of panels having a dimension corresponding to the small

Claim 20

Dependent Claim 85 words

triangular-shaped portion of said second series of panels. 18. In a floating deck as defined in claim 16, comprising a further series of panels, each defining a parallelogram shape and including: a. a small triangular-shaped portion extending from one side thereof at the upper end thereof; b. a small triangular-shaped recess provided on the opposite side of said parallelogram at the upper end thereof; said portion and said recess having identical shape corresponding to similar small triangular-shaped portions on any of the previously recited panels.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1980-04-18	1980-10-18	1981-04-19	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1984-04-18	1984-10-18	1985-04-19	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1988-04-18	1988-10-18	1989-04-19	$7700.00	Window Closed / Lapsed

Floating deck for liquid storage tank

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