Patent US5838972A successfully refreshed from Google Patents.
US4067209A
Expired / Lapsed
US
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Warp knit upholstery fabrics
Assignee: IWS Nominee Co Ltd
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Filing: 1976-06-02
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Granted: 1978-01-10
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Expires: 1996-06-02
Abstract
Abstract An upholstery fabric, suitable for providing the sole body-supporting surface in a seat construction with a lightweight, for example tubular, frame, comprises a rigid, knitted base fabric and, interengaged therewith, a fabric surface formed from textile yarns having flame retardant properties. The fabric is preferably warp knitted and the base fabric has a rigid net structure. A decorative surface yarn is preferably interlaced at every course with the base fabric.
Inventors
- 👤 Frank Joseph Kucera
- 👤 Thomas Desmond Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:28
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/14; D10; D10B; D10B2505/00; D10B2505/08; Y; Y10; Y10S; Y10S297/00; Y10S297/05; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/3724; Y10T442/3976; Y10T442/3984
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A compound upholstery fabric knitted on a warp knitting machine formed from at least 3 guide bars and including fall plate and ground yarns, suitable for providing the sole body-supporting surface in a seat construction with an open frame, said fabric comprising: a rigid warp knit net structure comprising pillar and laid-in stitches of high tensile ground yarns constituting a base fabric having dimensional stability in the warp and weft directions; and a knitted fabric surface comprising the fall plate yarns of a softer handle than the ground yarns, the yarns of said fabric surface being regularly interlaced with said rigid net structure to maintain said fabric surface in interengagement with said base fabric.
Claim 2
Dependent Claim
114 words
A compound upholstery fabric knitted on a warp knitting machine formed from at least 3 guide bars and including fall plate and ground yarns, suitable for providing the sole body-supporting surface in a seat construction with an open frame, said fabric comprising: a rigid warp knit net structure comprising pillar and laid-in stitches of high tensile ground yarns constituting a base fabric having dimensional stability in the warp and weft directions; and a knitted fabric surface comprising the fall plate yarns of a softer handle than the ground yarns, the yarns of said fabric surface being regularly interlaced with said rigid net structure to maintain said fabric surface in interengagement with said base fabric.
Claim 3
Dependent Claim
20 words
A compound fabric according to claim 1 wherein the fabric surface is interengaged with the base fabric at every course.
Claim 4
Dependent Claim
20 words
A compound fabric according to claim 1 wherein the base fabric is formed of polyester or high tensile rayon fibres.
Claim 5
Dependent Claim
18 words
A compound fabric according to claim 1 wherein the fabric surface comprises wool fibres having flame retardant properties.
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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |