Patent US3774388A successfully refreshed from Google Patents.
US3774388A
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Method for producing synthetic torque yarns
Assignee: Warner and Swasey Co
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Filing: 1971-02-17
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Granted: 1973-11-27
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Expires: 1991-02-17
Abstract
Abstract Textured synthetic torque-lively yarns are cold drawn to eliminate substantially their tendency to snarl during normal knitting or other fabricating operations. The method produces a new product characterized by excellent stretch properties in the fabricated end product. The new yarn is particularly suited for use in the knitting of stretch hosiery and other fabrics.
Inventors
- 👤 E Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:59
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/028
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
61 words
In a continuous method of making a novel yarn product, the steps which comprise: a. continuously twisting heat-settable synthetic thermoplastic yarn, b. heat-setting the yarn at a predetermined temperature while in a twisted condition, c. continuously cooling the yarn, and d. after cooling continuously drawing the cooled yarn sufficiently to elongate the yarn at a temperature substantially below the heat-setting temperature.
Claim 2
Dependent Claim
61 words
In a continuous method of making a novel yarn product, the steps which comprise: a. continuously twisting heat-settable synthetic thermoplastic yarn, b. heat-setting the yarn at a predetermined temperature while in a twisted condition, c. continuously cooling the yarn, and d. after cooling continuously drawing the cooled yarn sufficiently to elongate the yarn at a temperature substantially below the heat-setting temperature.
Claim 3
Dependent Claim
14 words
The method defined in claim 1, wherein the drawing temperature is substantially ambient temperature.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |