Patent DE767259C successfully refreshed from Google Patents.
Patent US4081579A successfully refreshed from Google Patents.
US4081579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile composite fabric with foamed adhesive
Assignee: Sanquhar Tile Services Ltd
•
Filing: 1975-11-14
•
Granted: 1978-03-28
•
Expires: 1995-11-14
Abstract
Abstract A composite fabric in the form of a carpet tile including a fibrous material and a substrate material formed of deaerated thermo-plastics material having a density in the range 4-10 lbs./sq. yard. The thermo-plastics material forms an exposed surface of the carpet tile and the fibrous material forms a layer embedded in the deaerated thermo-plastics material remote from the exposed surface. A lightweight layer of pile-forming material having a density in the range 6-8 oz/sq. yard is bonded to the substrate material at the surface thereof remote from the exposed surface and a bonding agent, in the form of a layer of a foamed plastics material in a gelled state, secures the layer of pile-forming material to the substrate material.
Inventors
- 👤 David Stewart Queen
- 👤 Peter William Bell
- 👤 Thomas Hutcheson Dick
- 👤 John Black Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:42
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/003; B29C70/0035; B29K; B29K2309/00; B29K2309/08; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/23986; Y10T428/23993; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249982; Y10T428/249984; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A composite fabric comprising: a substrate material formed of deaerated thermo-plastics material and fibrous material, the thermo-plastics material forming an exposed surface of the composite fabric, the fibrous material forming a layer embedded in said deaerated thermo-plastics material remote from said exposed surface, a layer of porous lightweight pile material being of lesser density than the deaerated thermo-plastics material and bonded to the substrate material at the surface thereof remote from said exposed surface, and a bonding agent in the form of a layer of foamed plastics material securing said layer of porous, lightweight pile material to said substrate material without substantial penetration of said pile material.
Claim 2
Dependent Claim
107 words
A composite fabric comprising: a substrate material formed of deaerated thermo-plastics material and fibrous material, the thermo-plastics material forming an exposed surface of the composite fabric, the fibrous material forming a layer embedded in said deaerated thermo-plastics material remote from said exposed surface, a layer of porous lightweight pile material being of lesser density than the deaerated thermo-plastics material and bonded to the substrate material at the surface thereof remote from said exposed surface, and a bonding agent in the form of a layer of foamed plastics material securing said layer of porous, lightweight pile material to said substrate material without substantial penetration of said pile material.
Claim 3
Dependent Claim
126 words
A composite fabric in the form of a carpet tile comprising: a substrate material formed of deaerated thermo-plastics material having a density in the range 4-10 lbs/sq. yard and fibrous material, the thermo-plastics material forming an exposed surface of the carpet tile, the fibrous material forming a layer embedded in said deaerated thermo-plastics material remote from said exposed surface, a lightweight layer of porous pile-forming material having a density in the range 6-8 oz/sq. yard bonded to the substrate material at the surface thereof remote from said exposed surface, and a bonding agent in the form of a layer of a foamed plastics material in a gelled state securing said layer of porous pile-forming material to said substrate material without substantial penetration of said pile-forming material.
Claim 4
Dependent Claim
126 words
A composite fabric in the form of a carpet tile comprising: a substrate material formed of deaerated thermo-plastics material having a density in the range 4-10 lbs/sq. yard and fibrous material, the thermo-plastics material forming an exposed surface of the carpet tile, the fibrous material forming a layer embedded in said deaerated thermo-plastics material remote from said exposed surface, a lightweight layer of porous pile-forming material having a density in the range 6-8 oz/sq. yard bonded to the substrate material at the surface thereof remote from said exposed surface, and a bonding agent in the form of a layer of a foamed plastics material in a gelled state securing said layer of porous pile-forming material to said substrate material without substantial penetration of said pile-forming material.
Claim 5
Dependent Claim
22 words
A composite fabric as claimed in claim 2, wherein said fibrous material is in the form of a scrim made of fiberglass.
Claim 6
Dependent Claim
14 words
A composite fabric as claimed in claim 2, wherein said thermo-plastics material comprises P.V.C.
Claim 7
Dependent Claim
15 words
A composite fabric as claimed in claim 4, wherein said foamed plastics material comprises P.V.C.
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) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |