US4137575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool tarpaulin
Assignee: SEKISUI (EUROPE) AG BAARERSTRASSE 10 CH - 6300 ZUG SWITZERLAND
•
Filing: 1977-06-24
•
Granted: 1979-02-06
•
Expires: 1997-06-24
Abstract
Abstract A tarpaulin with thermal insulation for a swimming pool, comprising a closed-cellularly foamed, elastic plastic foil with flotation features, wherein the top side thereof is lined with a porous material and the reverse side with an impenetrable, flexible surface structure having a relief-like surface.
Inventors
- 👤 Friedemann Klaffke
- 👤 Klaus Heckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:15
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; E; E04; E04H; E04H4/00; E04H4/06; E04H4/10; B32B27/00; B32B27/06; B32B27/065; B32B5/18; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2266/08; B32B2307/00; B32B2307/30; B32B2307/304; B32B2307/70; B32B2307/726; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
104 words
A laminated tarpaulin with thermal insulation for a swimming pool, comprising a closed-cellularly foamed, elastic plastic inner layer with flotation features, a top layer of porous material and a bottom layer of an impenetrable, flexible material; and wherein the top layer is woven of a polyolefin, the inner layer is foamed polyethylene with a thickness of about 3 to 15 mm and the bottom layer is a polyolefin with a thickness of about 30 to 100 microns, the bottom layer and the bottom of the inner layer having a waffle-like embossment; said tarpaulin in combination with a swimming pool for covering the water therein.
Claim 2
Dependent Claim
104 words
A laminated tarpaulin with thermal insulation for a swimming pool, comprising a closed-cellularly foamed, elastic plastic inner layer with flotation features, a top layer of porous material and a bottom layer of an impenetrable, flexible material; and wherein the top layer is woven of a polyolefin, the inner layer is foamed polyethylene with a thickness of about 3 to 15 mm and the bottom layer is a polyolefin with a thickness of about 30 to 100 microns, the bottom layer and the bottom of the inner layer having a waffle-like embossment; said tarpaulin in combination with a swimming pool for covering the water therein.
Claim 3
Dependent Claim
23 words
A tarpaulin and swimming pool combination according to claim 1, wherein the top layer weighs from about 70 to 150 g/m 2 .
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) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |