Patent US3457072A successfully refreshed from Google Patents.
Patent US4027442A successfully refreshed from Google Patents.
US4027442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing swimming pools
Assignee: Kdi Sylvan Pools Inc
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Filing: 1976-02-18
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Granted: 1977-06-07
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Expires: 1996-02-18
Abstract
Abstract A method of constructing swimming pools is described which includes spraying a mass of foamable plastic against the exposed pool wall surface of an assembled pool which plastic material adheres thereto and hardens, forming a dense resilient foam mass with a hardened exterior skin facing toward the interior of the pool, and applying an ultraviolet protective covering to the skin to improve its resistance to light and moisture.
Inventors
- 👤 Herman Silverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:06
CPC Classifications
E; E04; E04H; E04H4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989; Y10T428/24999; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31815
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
The method of constructing a swimming pool which comprises assembling a static structure comprising a plurality of metallic components having flat vertically disposed interior faces providing an interior exposed wall surface around the perimeter of the pool with a potentiality for water leakage therethrough, spraying a foamable synthetic plastic material in liquid form towards said wall surface for adherence thereto of at least on layer of stabilized foam with a hardened exterior skin, and applying an ultraviolet protective material to the exterior skin.
Claim 2
Independent Claim
83 words
The method of constructing a swimming pool which comprises assembling a static structure comprising a plurality of metallic components having flat vertically disposed interior faces providing an interior exposed wall surface around the perimeter of the pool with a potentiality for water leakage therethrough, spraying a foamable synthetic plastic material in liquid form towards said wall surface for adherence thereto of at least on layer of stabilized foam with a hardened exterior skin, and applying an ultraviolet protective material to the exterior skin.
Claim 3
Dependent Claim
18 words
The method of constructing a swimming pool as defined in claim 1 wherein said plastic material is polyurethane.
Claim 4
Dependent Claim
26 words
The method of constructing a swimming pool as defined in claim 1 wherein said metallic components comprise a plurality of boards engaged along their meeting edges.
Claim 5
Dependent Claim
29 words
The method of constructing a swimming pool as defined in claim 3 wherein coping is placed on the top of the boards prior to spraying of said plastic material.
Claim 6
Dependent Claim
39 words
The method of constructing a swimming pool as defined in claim 1 in which said metallic components comprise a plurality of aluminum plates with the edges in meeting relation, and said plates are welded together at their meeting corners.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |