US3596459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing a nonstretch or low-stretch composite yarn of super high bulkiness
Assignee: Teijin Ltd
•
Filing: 1969-07-01
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Granted: 1971-08-03
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Expires: 1989-07-01
Abstract
Abstract Process of producing a nonstretch or low-stretch composite yarn of super high bulkiness. At least one core yarn is fed, and at least one covering yarn having a plurality of filaments is tensioned and relaxed and is then fed in an overfed state to a wrapping point where it is wrapped around the core yarn. The rate of delivery of the covering yarn to the wrapping point is such that the ratio of the length of the covering yarn is from 110-300 percent of the length of the core yarn per unit length of the composite yarn. The composite yarn has a final twist imparted thereto.
Inventors
- 👤 Osamu Wada
- 👤 Yoshiyuki Sasaki
- 👤 Masaaki Tomiji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:10
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/36; D02G3/367
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
46 words
The process as claimed in claim 1 wherein the tensioned and relaxed covering yarn is fed into a pair of feed rollers and the separately fed core yarn is joined to the covering yarn at the feed rollers and is thereby covered with the covering yarn.
Claim 2
Dependent Claim
152 words
A process of producing a nonstretch or low-stretch composite yarn of super high bulkiness, comprising the steps of forming at least two separate yarns into a core yarn by separately and angularly feeding the separate yarns to a point and twisting them at said point; feeding said one core yarn; tensioning a crimped covering yarn having a plurality of filaments to remove the crimps therefrom and then relaxing said covering yarn; feeding the relaxed covering yarn in an overfed state to said twisting point and wrapping said relaxed covering yarn around the core as a cover to form a composite yarn, the rate of delivery of the covering yarn to the twisting point being such that the ratio of the length of the covering yarn is from 110-300 percent of the length of the core yarn per unit length of the composite yarn; and finally imparting a twist to the composite yarn.
Claim 3
Dependent Claim
141 words
A process of producing a nonstretch or low-stretch composite yarn of super high bulkiness, comprising the steps of feeding at least one core yarn by passing it through a pair of fluted nip rolls for crimping the core yarn, tensioning a crimped covering yarn having a plurality of filaments to remove the crimp therefrom and then relaxing said covering yarn, feeding the relaxed covering yarn in an overfed state to a wrapping point and wrapping said relaxed covering yarn around the core as a cover to form a composite yarn, the rate of delivery of the covering yarn to the wrapping point being such that the ratio of the length of the covering yarn is from 110-300 percent of the length of the core yarn per unit length of the composite yarn, and finally imparting a twist to the composite yarn.
Claim 4
Dependent Claim
163 words
A process of producing a nonstretch or low-stretch composite yarn of super high bulkiness, comprising the steps of forming at least two separate yarns into a core yarn by separately and angularly feeding the separate yarns to a point and twisting them at said poinT; feeding said core yarn; tensioning a crimped covering yarn having a plurality of filaments to remove the crimp therefrom and then relaxing said covering yarn; feeding the relaxed covering yarn in an overfed state to a point which lies ahead of said twisting point with respect to the feed direction and wrapping the relaxed covering yarn around the core as a cover to form a composite yarn, the rate of delivery of the covering yarn to the wrapping point being such that the ratio of the length of the covering yarn is from 100-300 percent of the length of the core yarn per unit length of the composite yarn; and finally imparting a twist to the composite yarn.
References Cited (Backward Citations)
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US3447302A
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US3068636A
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US3264816A
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US3410077A
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US3257793A
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US3410078A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |