Patent US4828914A successfully refreshed from Google Patents.
US4828914A
Expired / Lapsed
US
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Non-woven flannel fabric
Assignee: Armstrong World Industries Inc
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Filing: 1987-12-14
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Granted: 1989-05-09
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Expires: 2007-12-14
Abstract
Abstract A method and apparatus is set forth to form a flannel-like product. A non-woven web of fibers of two contrasting shades of color are needled twice to form a non-woven fabric with the coloration of woven flannel material. A calendar roll smooths the fabric to remove the appearance of the needling operations and get a non-woven flannel-like product.
Inventors
- 👤 Kenneth G. Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:59
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; Y; Y10; Y10T; Y10T442/00; Y10T442/60; Y10T442/682; Y10T442/684; Y10T442/688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A non-woven flannel fabric comprising: (a) a web of non-woven fibers of two contrasting shades of color, (b) said web having needle penetrations of about 300 penetrations per inch with the fibers entangled at each penetration, and (c) one surface of the web being smooth due to ironing with the appearance of said needle penetrations eliminated therefrom and the colored fibers appearing as small, distinct different color spots in the manner of the mottled or varigated coloration of woven flannel.
Claim 2
Dependent Claim
80 words
A non-woven flannel fabric comprising: (a) a web of non-woven fibers of two contrasting shades of color, (b) said web having needle penetrations of about 300 penetrations per inch with the fibers entangled at each penetration, and (c) one surface of the web being smooth due to ironing with the appearance of said needle penetrations eliminated therefrom and the colored fibers appearing as small, distinct different color spots in the manner of the mottled or varigated coloration of woven flannel.
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) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |