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Patent US3137991A successfully refreshed from Google Patents.
US3137991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of bulked yarns
Assignee: British Nylon Spinners Ltd
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Filing: 1963-08-05
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Granted: 1964-06-23
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Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Kenneth D Fairley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:07
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0246
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR THE MANUFACTURE OF A BULKED YARN COMPRISING A CORE OF CRIMPED CONTINUOUS FILAMENTS SURROUNDED BY A SHEATH OF STAPLE LENGTH FIBRES, WHEREIN TWO OR MORE YARNS, AT LEASST ONE OF WHICH IS THERMOPLASTIC, HAVING DIFFERENT EXTENSIONS TO BREAK ARE COMBINED, AND ARE FALSE TWISTED AND DRAWN WHILE IN A HEATED CONDIDTION TO CAUSE THE YARN HAVING THE LOWEST EXTENSION TO BREAK TO BREAK INTO CRIMPED STAPLE LENGTH FIBRES, WHICH FIBRES FORM A SHEATH AROUND THE REMAINING UNBROKEN CRIMPED FILAMENTS WHICH THEREBY FORM A CORE OF CRIMPED CONTINUOUS FILAMENTS, THE ENDS OF THE STAPLE FIBRES ENTANGLING WITH THE CONTINUOUS FILAMENT CORE.
Claim 2
Dependent Claim
103 words
A PROCESS FOR THE MANUFACTURE OF A BULKED YARN COMPRISING A CORE OF CRIMPED CONTINUOUS FILAMENTS SURROUNDED BY A SHEATH OF STAPLE LENGTH FIBRES, WHEREIN TWO OR MORE YARNS, AT LEASST ONE OF WHICH IS THERMOPLASTIC, HAVING DIFFERENT EXTENSIONS TO BREAK ARE COMBINED, AND ARE FALSE TWISTED AND DRAWN WHILE IN A HEATED CONDIDTION TO CAUSE THE YARN HAVING THE LOWEST EXTENSION TO BREAK TO BREAK INTO CRIMPED STAPLE LENGTH FIBRES, WHICH FIBRES FORM A SHEATH AROUND THE REMAINING UNBROKEN CRIMPED FILAMENTS WHICH THEREBY FORM A CORE OF CRIMPED CONTINUOUS FILAMENTS, THE ENDS OF THE STAPLE FIBRES ENTANGLING WITH THE CONTINUOUS FILAMENT CORE.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |