Patent US3237391A successfully refreshed from Google Patents.
US3237391A
Expired / Lapsed
US
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Pretwisting apparatus and method
Assignee: Turbo Machine Co
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Filing: 1964-12-30
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Granted: 1966-03-01
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Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 George A Carruthers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:56
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/14; D01H1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN AN APPARATUS FOR PRETWISTING YARN CARRIED ON TWO SEPARATE YARN PACKAGES, THE COMBINATION COMPRISING A SPOOL CARRYING A PREDETERMINED NUMBER OF TURNS OF WOUND YARN, SAID SPOOL HAVING A FREE END OVER WHICH SAID YARN TURNS MAY BE WITHDRAWN, SAID WOUND YARN HAVING A FREE END AND A TAIL END, MEANS FORMING A PAIR OF SPACED PASSAGES EXTENDING THROUGH SAID SPOOL, THE YARN FROM ONE OF SAID PACKAGES BEING A FREE YARN EXTENDING THROUGH ONE OF SAID PASSAGES, SAID TAIL END OF SAID WOUND YARN PASSING FOR WARDLY OVER THE FREE END OF SAID SPOOL AND REARWARDLY
Claim 2
Dependent Claim
98 words
IN AN APPARATUS FOR PRETWISTING YARN CARRIED ON TWO SEPARATE YARN PACKAGES, THE COMBINATION COMPRISING A SPOOL CARRYING A PREDETERMINED NUMBER OF TURNS OF WOUND YARN, SAID SPOOL HAVING A FREE END OVER WHICH SAID YARN TURNS MAY BE WITHDRAWN, SAID WOUND YARN HAVING A FREE END AND A TAIL END, MEANS FORMING A PAIR OF SPACED PASSAGES EXTENDING THROUGH SAID SPOOL, THE YARN FROM ONE OF SAID PACKAGES BEING A FREE YARN EXTENDING THROUGH ONE OF SAID PASSAGES, SAID TAIL END OF SAID WOUND YARN PASSING FOR WARDLY OVER THE FREE END OF SAID SPOOL AND REARWARDLY
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |