Patent US3036415A successfully refreshed from Google Patents.
Patent US4602396A successfully refreshed from Google Patents.
US4602396A
Expired / Lapsed
US
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Waterbed flotation system with vapor barrier
Assignee: Individual
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Filing: 1984-09-13
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Granted: 1986-07-29
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Expires: 2004-09-13
Abstract
Abstract A flotation sleep system for a liquid filled bed wherein a sheet of closed cell polyethylene foam bonded to a foamed layer is provided between the ticking of the bed and the watermattress. This arrangement prevents the collection of moisture or condensation on the watermattress and prevents the growth of mildew thereon.
Inventors
- 👤 Richard Fraige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:00
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/085; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/239; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249981
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
In a liquid filled flotation system including a frame receiving a watermattress therein, and a covering over the watermattress, the invention which comprises: condensation and mildew preventing means comprising a first layer of closed cell polyethylene foam disposed between the covering and watermattress providing a vapor barrier adapted to prevent water vapor from penetrating down from said cover to the upper surface of said watermattress and condensing thereon, a second layer of closed cell polyurethane foam between said covering and said first layer, a layer of plastic material disposed between said covering and said second layer and a layer of plastic material disposed between said second layer, and said first layer wherein said covering is bonded to said first mentioned layer of plastic material, said first mentioned layer of plastic material is bonded to said second layer and said second mentioned layer of plastic material is bonded to both said second layer and to said first layer.
Claim 2
Dependent Claim
157 words
In a liquid filled flotation system including a frame receiving a watermattress therein, and a covering over the watermattress, the invention which comprises: condensation and mildew preventing means comprising a first layer of closed cell polyethylene foam disposed between the covering and watermattress providing a vapor barrier adapted to prevent water vapor from penetrating down from said cover to the upper surface of said watermattress and condensing thereon, a second layer of closed cell polyurethane foam between said covering and said first layer, a layer of plastic material disposed between said covering and said second layer and a layer of plastic material disposed between said second layer, and said first layer wherein said covering is bonded to said first mentioned layer of plastic material, said first mentioned layer of plastic material is bonded to said second layer and said second mentioned layer of plastic material is bonded to both said second layer and to said first layer.
Claim 3
Dependent Claim
13 words
The system of claim 1 wherein said first layer is about 1/8" thick.
Claim 4
Dependent Claim
14 words
The system of claim 1 wherein said plastic materials are open celled polyurethane foams.
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) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |