Patent US3985925A successfully refreshed from Google Patents.
US3985925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite floor coverings
Assignee: Omnium de Prospective Industrielle SA
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Filing: 1975-03-25
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Granted: 1976-10-12
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Expires: 1995-03-25
Abstract
Abstract This invention relates to a composite covering, particularly useful as floor covering, constituted by an underlayer of a density varying as a function of the thickness and by a light velvet-type woven fabric with a weight per surface unit of between 70 and 120 g/m 2 , said fabric, constituting the visible face of the covering, being glued to the underlayer on the side of the zone of high density.
Inventors
- 👤 Michel S. M. Lefebvre
- 👤 Joseph Davidovits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:22
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; D06N7/006; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23957; Y10T428/23979; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249953; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/3366
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
94 words
A composite floor covering article comprising a light woven fabric which constitutes the visible face of the article and a cellular expanded plastic foam underlayer, the underlayer being fixed to the fabric on the first surface of the underlayer and having its highest density at said first surface of the underlayer and a decreasing density through its thickness toward the other surface, the fabric not comprising any portion of the underlayer and the underlayer being constituted by at least two separate and distinct layers of different densities adhered to each other by an adhesive.
Claim 2
Dependent Claim
94 words
A composite floor covering article comprising a light woven fabric which constitutes the visible face of the article and a cellular expanded plastic foam underlayer, the underlayer being fixed to the fabric on the first surface of the underlayer and having its highest density at said first surface of the underlayer and a decreasing density through its thickness toward the other surface, the fabric not comprising any portion of the underlayer and the underlayer being constituted by at least two separate and distinct layers of different densities adhered to each other by an adhesive.
Claim 3
Dependent Claim
21 words
Covering as claimed in claim 1, wherein the fabric is a knitted fabric made of brushed and loop broken synthetic fibres.
Claim 4
Dependent Claim
21 words
Covering as claimed in claim 2, wherein the knitted fabric is coated by a finish before being glued to the underlayer.
Claim 5
Dependent Claim
27 words
Covering as claimed in claim 1, wherein the fabric is a velvet-type fabric with a weight per surface unit of between 70 and 120 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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |