Patent US4862011A successfully refreshed from Google Patents.
US3091908A
Expired / Lapsed
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Apparatus and method for false twisting yarns
Assignee: Turbo Machine Co
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Filing: 1962-05-21
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Granted: 1963-06-04
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Carruthers George Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:19
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN A METHOD OF MODIFYING THERMOPLASTIC HEAT-SETTABLE YARN FILAMENTS THE STEPS WHICH COMPRISE PRE-TWISTING A PLURALITY OF ENDS OF SAID YARNS TOGETHER, TENSIONING THEM, PASSING THEM WHILE TWISTED THROUGH A HEATING ZONE MAINTAINED AT A HEAT-SETTING TEMPERATURE, COOLING THE HEAT-SET YARNS IN A TWISTED, TENSIONED CONDITION, SEPARATING THE ENDS OF YARN CONTINUOUSLY FROM ONE ANOTHER BY WITHDRAWING SAID YARNS DIFFERENT DIRECTIONS, AND AUTOMATICALLY VARYING THE RATE OF WITHDRAWAL OF EACH YARN THEREBY MAINTAINING SUBSTANTIALLY CONSTANT TENSION ON THE TWISTED YARNS.
Claim 2
Dependent Claim
80 words
IN A METHOD OF MODIFYING THERMOPLASTIC HEAT-SETTABLE YARN FILAMENTS THE STEPS WHICH COMPRISE PRE-TWISTING A PLURALITY OF ENDS OF SAID YARNS TOGETHER, TENSIONING THEM, PASSING THEM WHILE TWISTED THROUGH A HEATING ZONE MAINTAINED AT A HEAT-SETTING TEMPERATURE, COOLING THE HEAT-SET YARNS IN A TWISTED, TENSIONED CONDITION, SEPARATING THE ENDS OF YARN CONTINUOUSLY FROM ONE ANOTHER BY WITHDRAWING SAID YARNS DIFFERENT DIRECTIONS, AND AUTOMATICALLY VARYING THE RATE OF WITHDRAWAL OF EACH YARN THEREBY MAINTAINING SUBSTANTIALLY CONSTANT TENSION ON THE TWISTED YARNS.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |