US3763643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel high-bulk yarn
Assignee: Rhone Poulenc Textile SA
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Filing: 1970-11-13
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Granted: 1973-10-09
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Expires: 1990-11-13
Abstract
Abstract A high-bulk yarn having interlaced filaments substantially free from loops, and preferably having spherical knops affecting the yarn as a whole, is made by subjecting a continuous filament (or less preferably a staple fibre) yarn to the action of a turbulent fluid in a suitable nozzle, into which the yarn is fed nonaxially so that it rubs against one wall thereof. If desired more than one yarn can be employed, making a single composite yarn. The invention includes also a nozzle, preferably having its yarn input opening flared to provide for the necessary friction of the yarn against the side of the nozzle.
Inventors
- 👤 M Buzano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:15
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
High bulk yarn made of synthetic or artificial material having interlaced filaments which individually are substantially free from loops and other convolutions, the said yarn comprising randomly spaced knops of substantially spherical shape formed by loops in the yarn as a whole.
Claim 2
Dependent Claim
42 words
High bulk yarn made of synthetic or artificial material having interlaced filaments which individually are substantially free from loops and other convolutions, the said yarn comprising randomly spaced knops of substantially spherical shape formed by loops in the yarn as a whole.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |