US4736911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane passenger seat with flame-retarding construction
Assignee: Metzeler Schaum GmbH
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Filing: 1986-02-28
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Granted: 1988-04-12
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Expires: 2006-02-28
Abstract
Abstract An airline passenger seat with flame-retarding properties with seat and back-rest upholstery consisting of polyurethane foam which is provided with a flame-retarding surface and is covered by a covering material with flame-retarding properties. A polyurethane foam film is arranged between the seat and back-rest upholstery and the covering material, at least on the surface not covered by the seat frame parts, and the surface of the film is connected to the upholstery.
Inventors
- 👤 Ulrich Heitmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:13
CPC Classifications
B; B64; B64D; B64D11/00; B64D11/06; B64D11/0647; Y; Y10; Y10S; Y10S297/00; Y10S297/05; Y10S428/00; Y10S428/92; Y10S428/921; Y10S521/00; Y10S521/906; Y10T; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/249921; Y10T428/249953; Y10T428/249981
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
In an airline passenger seat with flame-retarding properties having a seat frame, the improvement compising a seat and back-rest upholstery core of polyurethane foam partly covered by the seat frame, a covering material with flame-retarding properties covering the seat and back-rest upholstery core, and a polyurethane foam film with flame-retarding properties being arranged between the seat and back-rest upholstery core and the covering material and adhesively bonded to the seat and back-rest upholstery core, the flame-retarding properties of the polyurethane foam film being provided by an impregnation of aluminum hydroxide in a chloroprene latex binder and antimony trioxide, the polyurethane foam film having a thickness of substantially between 10 and 25 mm.
Claim 2
Dependent Claim
112 words
In an airline passenger seat with flame-retarding properties having a seat frame, the improvement compising a seat and back-rest upholstery core of polyurethane foam partly covered by the seat frame, a covering material with flame-retarding properties covering the seat and back-rest upholstery core, and a polyurethane foam film with flame-retarding properties being arranged between the seat and back-rest upholstery core and the covering material and adhesively bonded to the seat and back-rest upholstery core, the flame-retarding properties of the polyurethane foam film being provided by an impregnation of aluminum hydroxide in a chloroprene latex binder and antimony trioxide, the polyurethane foam film having a thickness of substantially between 10 and 25 mm.
Claim 3
Dependent Claim
26 words
An airline passenger seat according to claim 1, wherein the foam film is bonded to the upholstery core by means of an adhesive with flame-retarding properties.
Claim 4
Dependent Claim
28 words
An air passenger seat according to claim 1, wherein the impregnation is from 350 to 450% by weight, based on the crude weight of the untreated foam film.
Claim 5
Dependent Claim
40 words
An airline passenger seat according to claim 1, wherein the polyurethane foam film contains 60 to 70% by weight of aluminum hydroxide, 2 to 3% by weight of antimony trioxide and 30 tp 40% by weight of chloroprene latex binder.
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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) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |