US4173860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textured synthetic fiber yarn and process for making same
Assignee: Individual
•
Filing: 1976-12-06
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Granted: 1979-11-13
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Expires: 1996-12-06
Abstract
Abstract A new method has been invented for introducing texture, crimp, or set twist into synthetic polymer yarns which eliminates the need to heat the yarns prior to the texturing step. It has been found that the heat generated in the drawing step of synthetic yarn manufacturing processes is sufficient to cause a twisted undrawn yarn to retain the twist permanently after being drawn. The mild heat treatment experienced by the fibers is highly uniform and produces textured yarns of exceptional uniformity, especially with respect to dyeability, as compared with textured yarns produced by known art processes.
Inventors
- 👤 John R. McKlveen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:19
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/022
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
42 words
A process for making a textured continuous filament synthetic yarn consisting essentially of the steps of twisting two or more drawable fibers, drawing the fibers while in the twisted state thereby permanently fixing the twist in the fibers, and untwisting the fibers.
Claim 2
Dependent Claim
42 words
A process for making a textured continuous filament synthetic yarn consisting essentially of the steps of twisting two or more drawable fibers, drawing the fibers while in the twisted state thereby permanently fixing the twist in the fibers, and untwisting the fibers.
Claim 3
Dependent Claim
17 words
The process of claim 1 when the yarn is twisted by means of a false twist spindle.
Claim 4
Dependent Claim
14 words
Yarns and textile products containing such yarns made by the process of claim 1.
Claim 5
Dependent Claim
18 words
The process of claim 1 when the drawable fibers are from the group nylon 6 and nylon 6,6.
Claim 6
Dependent Claim
18 words
The process of claim 2 when the drawable fibers are from the group nylon 6 and nylon 6,6.
Claim 7
Dependent Claim
10 words
The process of claim 1 wherein the yarn is thermoplastic.
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) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |