Patent US3933002A successfully refreshed from Google Patents.
US3933002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skating rink
Assignee: Individual
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Filing: 1974-06-17
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Granted: 1976-01-20
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Expires: 1994-06-17
Abstract
Abstract A skating rink comprising a rigid wall forming the periphery of a closed area, and a sheet, spread over the area and the wall, to form a water container. The wall is formed of elongated flexible tube of plastic sheet which is placed in a peripheral configuration and then filled with space-filling, rigid material, either water, which is allowed to freeze, or formed-in-place plastic foam. The sheet is held in place either by tucking its edges under the wall or by wire clips which hold the sheet and wall together. A plastic foam blanket can be used to reduce puncturing of the wall.
Inventors
- 👤 Earle R. Vickery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:56
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/10; E01C13/102
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
65 words
A skating rink, comprising: a. a flexible tube formed of sheet plastic and containing a rigid material, the tube being laid out on a horizontal surface to form the periphery of a closed geometric figure, and b. a flexible, water-proof sheet laid out over the closed geometric figure and extending beyond its periphery, thereby forming a liner of a structure capable of containing a liquid.
Claim 2
Dependent Claim
65 words
A skating rink, comprising: a. a flexible tube formed of sheet plastic and containing a rigid material, the tube being laid out on a horizontal surface to form the periphery of a closed geometric figure, and b. a flexible, water-proof sheet laid out over the closed geometric figure and extending beyond its periphery, thereby forming a liner of a structure capable of containing a liquid.
Claim 3
Dependent Claim
14 words
A skating rink as recited in claim 1 wherein, the rigid material is ice.
Claim 4
Dependent Claim
16 words
A skating rink as recited in claim 1 wherein, the rigid material is formed-in-place foamed plastic.
Claim 5
Dependent Claim
20 words
A skating rink as recited in claim 1 wherein, resilient clips are used to hold the sheet against the tube.
Claim 6
Dependent Claim
21 words
A skating rink as recited in claim 1 wherein, a portion of the tube is covered with a thick, resilient blanket.
Claim 7
Independent Claim
77 words
A method of forming a skating rink, comprising the steps of: a. forming a flexible tube into the periphery of a closed geometric figure on a horizontal surface, b. placing a material in the tube, c. causing the material to fill the tube and form a rigid mass, d. covering the closed figure with a water resistant sheet to form a liquid holding structure, and e. placing water in the structure, f. causing the water to freeze.
Claim 8
Independent Claim
77 words
A method of forming a skating rink, comprising the steps of: a. forming a flexible tube into the periphery of a closed geometric figure on a horizontal surface, b. placing a material in the tube, c. causing the material to fill the tube and form a rigid mass, d. covering the closed figure with a water resistant sheet to form a liquid holding structure, and e. placing water in the structure, f. causing the water to freeze.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |