US3872522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective cover for pools
Assignee: R & C BENNETT R & D Inc
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Filing: 1973-11-12
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Granted: 1975-03-25
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Expires: 1993-11-12
Abstract
Abstract A protective cover for pools of liquid such as swimming pools consisting of a plurality of separate panels each of a size and material such that the panel will have a predetermined buoyancy factor, at least one face of each panel having a series of indentations formed therein with at least some portion of the indentations being provided with bores opening on the opposite face of the panel; at least a portion of the indentations adjacent the edges of the panels are of a sufficient size to provide hand holds for individuals while these and the remaining indentations serve as receptacles for receiving debris deposited on the surface of the panel, or when in contact with the water serve to reduce water absorption and wind displacement.
Inventors
- 👤 Robert Br Bennett
- 👤 Charlotte S Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:31
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/06; E04H4/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
85 words
A protective coVering for a pool of liquid comprising a plurality of panels each having at least two substantially parallel surfaces and a predetermined thickness, at least one of said surfaces having formed therein a plurality of indentations, said indentations having a depth that is less than said predetermined thickness, said panels being constructed from a material having a density that is less than that of the liquid of the pool so that each of said panels will be buoyant when placed on the liquid.
Claim 2
Dependent Claim
85 words
A protective coVering for a pool of liquid comprising a plurality of panels each having at least two substantially parallel surfaces and a predetermined thickness, at least one of said surfaces having formed therein a plurality of indentations, said indentations having a depth that is less than said predetermined thickness, said panels being constructed from a material having a density that is less than that of the liquid of the pool so that each of said panels will be buoyant when placed on the liquid.
Claim 3
Dependent Claim
30 words
The protective covering as claimed in claim 1 wherein at least some of said indentations formed in said one surface have openings extending through said panel to the other surface.
Claim 4
Dependent Claim
24 words
The protective covering as claimed in claim 1 wherein the depth of each of said indentations is less than half of said predetermined thickness.
Claim 5
Dependent Claim
41 words
The protective covering as claimed in claim 3 wherein the other of said surfaces of each of said panels is also provided with a plurality of indentations of substantially the same depth as the said indentations formed in said one surface.
Claim 6
Dependent Claim
55 words
The protective covering as claimed in claim 4 wherein the said indentations on said one surface of each panel are each spaced a distance from the said indentations of said other surface and at least some of said indentations of said one and said other surface are connected by small openings extending through said panel.
Claim 7
Dependent Claim
14 words
The protective covering as claimed in claim 1 wherein said indentations have curved surfaces.
Claim 8
Dependent Claim
45 words
The protective covering as claimed in claim 5 wherein said indentations are hemispherical in shape, and said openings connect said indentations of said one and said other surface of each panel at each of said indentations'' point of greatest depth relative to said respective surfaces.
Claim 9
Dependent Claim
19 words
The protective covering as claimed in claim 1 wherein the liquid is water and said material is polyurethane foam.
Claim 10
Dependent Claim
14 words
The protective covering as claimed in claim 1 wherein said material is polystyrene foam.
Claim 11
Dependent Claim
106 words
A protective covering for a pool of liquid comprising a plurality of panels each having at least two substantially parallel surfaces and a predetermined thickness, each of said surfaces of each of said panels having formed therein a plurality of indentations, at least some of said indentations on one of said surfaces having bores formed therein communicating with at least some of the indentations formed in the other of said surfaces, said panels being constructed from a material having a density that is less than that of the liquid of the pool so that each of said panels will be buoyant when placed on the liquid.
Claim 12
Dependent Claim
106 words
A protective covering for a pool of liquid comprising a plurality of panels each having at least two substantially parallel surfaces and a predetermined thickness, each of said surfaces of each of said panels having formed therein a plurality of indentations, at least some of said indentations on one of said surfaces having bores formed therein communicating with at least some of the indentations formed in the other of said surfaces, said panels being constructed from a material having a density that is less than that of the liquid of the pool so that each of said panels will be buoyant when placed on the liquid.
References Cited (Backward Citations)
AU1378028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |