Patent US4470250A successfully refreshed from Google Patents.
US4470250A
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Elastic covered yarn
Assignee: Bayer AG
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Filing: 1982-07-02
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Granted: 1984-09-11
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Expires: 2002-07-02
Abstract
Abstract An elastic covered yarn the core of which is a wrapped yarn consisting of elasthan filament yarn having polyamide, polyester or viscose filament yarn as the sheath material, and which may be covered with different materials. This yarn has advantages in its properties and in processing compared to those covered yarns, the core of which is a bare elasthan filament yarn.
Inventors
- 👤 Gerd Arenz
- 👤 Hans R. Wiehe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:44
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/32; D02G3/328; D02G3/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
An elastic covered yarn comprising a wrapped yarn as the core, the wrapped yarn comprising a stretched elasthan filament yarn with a titre of from 30 to 200 dtex wrapped around with polyamide, polyester or viscose filament yarn with a titre of from 15 to 90 dtex, the wrapped yarn being covered with cellulose, mixed yarns of cellulose/polyester or cellulose/polyacrylonitrile, wool, regenerated cellulose fibers or mixtures with polyester or polyacrylonitrile, the covering material having a yarn-count-range of from 40 to 10.
Claim 2
Dependent Claim
81 words
An elastic covered yarn comprising a wrapped yarn as the core, the wrapped yarn comprising a stretched elasthan filament yarn with a titre of from 30 to 200 dtex wrapped around with polyamide, polyester or viscose filament yarn with a titre of from 15 to 90 dtex, the wrapped yarn being covered with cellulose, mixed yarns of cellulose/polyester or cellulose/polyacrylonitrile, wool, regenerated cellulose fibers or mixtures with polyester or polyacrylonitrile, the covering material having a yarn-count-range of from 40 to 10.
Claim 3
Dependent Claim
50 words
An elastic covered yarn according to claim 1, in which the elasthan filament yarn has a titre range of from 45 to 160 dtex, the wrapping material has a titre range of from 22 to 78 detex and the covering material has a number range of from 30 to 12.
Claim 4
Dependent Claim
19 words
An elastic covered yarn according to claim 1 wherein said elasthan filament yarn is wrapped round with polyamide yarn.
Claim 5
Dependent Claim
19 words
An elastic covered yarn according to claim 1 wherein said elasthan filament yarn is wrapped round with polyester yarn.
Claim 6
Dependent Claim
21 words
An elastic covered yarn according to claim 1 wherein said elasthan filament yarn is wrapped round with a viscose filament yarn.
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) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |