US3887735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upholstery articles and process for their manufacture
Assignee: Industrie Pirelli SpA
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Filing: 1973-01-11
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Granted: 1975-06-03
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Expires: 1993-01-11
Abstract
Abstract The invention relates to improved moulded expanded polyurethane upholstery articles, in particular cushions for seats and seat backs. These articles are provided with an external layer or skin of pre-formed polyurethane material at least part of which, particularly the wearing surface of the cushion, is covered by a very thin top coat of pigmented compact polyurethane, less than 0.05 mm thick, joined directly to the skin by a strong chemical bond, and having a slip coefficient of at least 20* (UNI 4818 Standard).
Inventors
- 👤 Cesare Laberinti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:22
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/18; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/249979; Y10T428/249981
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
IN AN ARTICLE OF UPHOLSTERY MOLDED IN EXPANDED POLYURETHANE COMPRISING AN INNER CORE EXPANDED POLYURETHANE AND A COVER COMPRISING A MICROPOROUS POLYURETHANE SKIN CHEMICALLY BONDED TO SAID INNER CORE, THE IMPROVEMENT WHICH COMPRISES AT LEAST PART OF THE SURFACE OF THE MICROPOROUS SKIN BEING COVERED BY A VERY THIN TOP COAT OF PIGMENTED COMPACT POLYURETHANE, LESS THAN 0.05 MM THICK, JOINED DIRECTLY TO THE SKIN BY A STRONG CHEMICAL BOND, AND HAVING A SLIP COEFFICIENT OF AT LEAST 20* (UNI 4818 STANDARD).
Claim 2
Dependent Claim
82 words
IN AN ARTICLE OF UPHOLSTERY MOLDED IN EXPANDED POLYURETHANE COMPRISING AN INNER CORE EXPANDED POLYURETHANE AND A COVER COMPRISING A MICROPOROUS POLYURETHANE SKIN CHEMICALLY BONDED TO SAID INNER CORE, THE IMPROVEMENT WHICH COMPRISES AT LEAST PART OF THE SURFACE OF THE MICROPOROUS SKIN BEING COVERED BY A VERY THIN TOP COAT OF PIGMENTED COMPACT POLYURETHANE, LESS THAN 0.05 MM THICK, JOINED DIRECTLY TO THE SKIN BY A STRONG CHEMICAL BOND, AND HAVING A SLIP COEFFICIENT OF AT LEAST 20* (UNI 4818 STANDARD).
Claim 3
Dependent Claim
83 words
In an article of upholstery molded in expanded polyurethane comprising an inner core of expanded polyurethane and a cover comprising a microporous polyurethane skin chemically bonded to said inner core, the improvement which comprises at least part of the surface of the microporous skin being covered by a very thin top coat of pigmented compact polyurethane, less than 0.05 mm thick, joined directly to the skin by a strong chemical bond, and having a slip coefficient of at least 20* (UNI 4818 Standard).
Claim 4
Dependent Claim
83 words
In an article of upholstery molded in expanded polyurethane comprising an inner core of expanded polyurethane and a cover comprising a microporous polyurethane skin chemically bonded to said inner core, the improvement which comprises at least part of the surface of the microporous skin being covered by a very thin top coat of pigmented compact polyurethane, less than 0.05 mm thick, joined directly to the skin by a strong chemical bond, and having a slip coefficient of at least 20* (UNI 4818 Standard).
Claim 5
Dependent Claim
16 words
The article of claim 1 in the form of a cushion for seats and seat backs.
Claim 6
Dependent Claim
21 words
The article of claim 1 wherein the surface of the microporous skin being covered is the wearing surface of a cushion.
Claim 7
Dependent Claim
32 words
Article of upholstery in accordance with claim 1, characterized by the fact that through the effect of the very thin top coating of pigmented polyurethane, the skin is given high discoloration characteristics.
Claim 8
Dependent Claim
45 words
Article of upholstery in accordance with claim 1, whose skin has a steam permeability value greater than 150 gr/1000 mm2/24h (DIN 53333), characterized by the fact that despite the presence of the very thin top coating as aforesaid, the skin retains the same steam permeability.
Claim 9
Dependent Claim
19 words
The upholstery article of claim 1 wherein the microporous polyurethane skin has a density from 0.4 to 0.8 gm/cm3.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |