Patent US3112600A successfully refreshed from Google Patents.
US3112600A
Expired / Lapsed
US
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Method and apparatus for processing yarns
Assignee: Leesona Corp
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Filing: 1961-11-02
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Granted: 1963-12-03
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Expires: 1981-11-02
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Stoddard
- 👤 Warren A Seem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:07
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A METHOD OF PROCESSING YARN TO PRODUCE A POSTTREATED TORQUE STRETCH YARN COMPRISING THE STEPS OF CONTINUALLY ADVANCING SAID YARN AT A PREDETERMINED SPEED OF TRAVEL THROUGH A FALSE-TWISTER AND REVERSE-TWIST THE YARN SUBSEQUENT TO SAID FALSE-TWISTER, CONTROLLING THE TENSION OF SAID YARN DURING SAID TWISTING AND REVERSETWISTING, HEATING SAID YARN WHILE IT IS TWISTED TO A PREDETERMINED TREATMENT TEMPERATURE CORRELATED WITH THE TENSION IN SAID YARD AND SAID PREDETERMINED SPEED OF TRAVEL, AND CONTROLLING THE HEAT LOSS FROM SAID YARN SUBSEQUENT TO SAID HEATING TO PERMIT COOLING OF THE YARN TO A TEMPERATURE BELOW SAID PREDETERMINED TEMPERATURE, BUT TO PREVENT COOLING OF SAID YARN TO AMBIENT TEMPERATURE AS IT IS REVERSE-TWISTED, WHEREBY SAID YARN CONTAINS SUFFICIENT RESIDUAL HEAT TO BE CORRELATED WITH THE TENSION THEREIN TO EFFECT A POST-TREATMENT OF SAID YARN CONTINUOUSLY WITH IT INITIAL PRODUCTION.
Claim 2
Independent Claim
138 words
A METHOD OF PROCESSING YARN TO PRODUCE A POSTTREATED TORQUE STRETCH YARN COMPRISING THE STEPS OF CONTINUALLY ADVANCING SAID YARN AT A PREDETERMINED SPEED OF TRAVEL THROUGH A FALSE-TWISTER AND REVERSE-TWIST THE YARN SUBSEQUENT TO SAID FALSE-TWISTER, CONTROLLING THE TENSION OF SAID YARN DURING SAID TWISTING AND REVERSETWISTING, HEATING SAID YARN WHILE IT IS TWISTED TO A PREDETERMINED TREATMENT TEMPERATURE CORRELATED WITH THE TENSION IN SAID YARD AND SAID PREDETERMINED SPEED OF TRAVEL, AND CONTROLLING THE HEAT LOSS FROM SAID YARN SUBSEQUENT TO SAID HEATING TO PERMIT COOLING OF THE YARN TO A TEMPERATURE BELOW SAID PREDETERMINED TEMPERATURE, BUT TO PREVENT COOLING OF SAID YARN TO AMBIENT TEMPERATURE AS IT IS REVERSE-TWISTED, WHEREBY SAID YARN CONTAINS SUFFICIENT RESIDUAL HEAT TO BE CORRELATED WITH THE TENSION THEREIN TO EFFECT A POST-TREATMENT OF SAID YARN CONTINUOUSLY WITH IT INITIAL PRODUCTION.
References Cited (Backward Citations)
US2089198A
Cited
US2227910A
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US2340577A
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US2523338A
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US2803105A
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FR1074322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |