US3277228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stretching yarn
Assignee: CHEMICAL (1963) Ltd
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Filing: 1965-07-26
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Granted: 1966-10-04
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Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Killoran Irene Agnes Buchanan
- 👤 Claude J Cormier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:57
CPC Classifications
D; D02; D02J; D02J13/00; D01; D01D; D01D5/00; D01D5/12; D01D5/16; D02J1/00; D02J1/22; D02J1/224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF STRETCHING YARN BY PASSING IT OVER AN ELONGATED CURVED HEATING SURFACE WHICH COMPRISES PASSING SAID YARN ONTO AN INLET END OF SAID SURFACE AND TAKING IT OFF AN OUTLET END AT A HIGHER SPEED OF AT LEAST THREE AND ONE HALF TIMES THE SPEED AT WHICH IT IS PASSED ONTO THE SURFACE, SUBJECTING THE THE YARN TO A GRADUALLY DECREASING RATE OF HEAT APPLICATION FROM THE INLET END TO THE OUTLET END, WHEREBY THE YARN IS HEATED TO THE STRETCHING TEMPERATURE AND IS SUBJECTED TO STRETCHIN TENSION AFTER HAVING BEEN HEATED TO THE SOFTINING POINT THEREOF.
Claim 2
Independent Claim
99 words
A METHOD OF STRETCHING YARN BY PASSING IT OVER AN ELONGATED CURVED HEATING SURFACE WHICH COMPRISES PASSING SAID YARN ONTO AN INLET END OF SAID SURFACE AND TAKING IT OFF AN OUTLET END AT A HIGHER SPEED OF AT LEAST THREE AND ONE HALF TIMES THE SPEED AT WHICH IT IS PASSED ONTO THE SURFACE, SUBJECTING THE THE YARN TO A GRADUALLY DECREASING RATE OF HEAT APPLICATION FROM THE INLET END TO THE OUTLET END, WHEREBY THE YARN IS HEATED TO THE STRETCHING TEMPERATURE AND IS SUBJECTED TO STRETCHIN TENSION AFTER HAVING BEEN HEATED TO THE SOFTINING POINT THEREOF.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |