US3669157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shrinkable tubular fabric
Assignee: Carolina Narrow Fabric Co
•
Filing: 1970-06-01
•
Granted: 1972-06-13
•
Expires: 1990-06-01
Abstract
Abstract A woven tubular fabric which is formed of a set of warp yarns extending longitudinally thereof and a filling yarn interwoven with the warp yarns and extending circularly around the tubular fabric. The filling yarn is heat shrinkable while the set of warp yarns is non-shrinkable so that the woven tubular fabric will shrink in a radial direction upon the application of heat, while the longitudinal dimension remains unchanged.
Inventors
- 👤 Hubert C Woodall Jr
- 👤 Horace L Freeman
- 👤 Noah C Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:29
CPC Classifications
F; F16; F16L; F16L57/00; B; B29; B29C; B29C61/00; B29C61/06; B29C61/0608; B29C61/0658; D; D03; D03D; D03D1/00; D03D1/0035; D03D1/0043; D03D3/00; B29L; B29L2011/00; B29L2023/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A tubular woven fabric comprising a set of non-shrinkable warp yarns formed from material selected from the group consisting of glass, asbestos, ceramic and metal, said warp yarns extending longitudinally of the tubular fabric, and heat shrinkable polymeric filling yarn extending circularly around the tubular fabric and substantially at right angles to the warp yarns, whereby the corresponding circular dimension of the tubular fabric may be reduced by the application of heat to the fabric while the longitudinal dimension remains substantially unchanged.
Claim 2
Dependent Claim
82 words
A tubular woven fabric comprising a set of non-shrinkable warp yarns formed from material selected from the group consisting of glass, asbestos, ceramic and metal, said warp yarns extending longitudinally of the tubular fabric, and heat shrinkable polymeric filling yarn extending circularly around the tubular fabric and substantially at right angles to the warp yarns, whereby the corresponding circular dimension of the tubular fabric may be reduced by the application of heat to the fabric while the longitudinal dimension remains substantially unchanged.
References Cited (Backward Citations)
US173615A
Cited
US417796A
Cited
US910891A
Cited
US1747715A
Cited
US2474375A
Cited
US2523637A
Cited
US3020935A
Cited
US3096560A
Cited
US3242554A
Cited
US3457962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |