US3807162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Covered elastic yarn
Assignee: Toray Industries Inc
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Filing: 1971-05-17
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Granted: 1974-04-30
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Expires: 1991-05-17
Abstract
Abstract The present invention relates to a covered elastic yarn with an elastic thread as a core yarn, and a continuous thermoplastic multifilament thread as a sheath yarn, wherein the respective filaments forming said covered elastic yarn are respectively tangled with each other to retain flux form, and at the same time to form the sheath-core system, and said sheath yarn wraps the outer periphery of said core yarn but is reversed irregularly and intermittently in said direction, and said sheath yarn and said core yarn are substantially twistless.
Inventors
- 👤 Y Tsujita
- 👤 K Yuki
- 👤 H Asami
- 👤 T Kimura
- 👤 S Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:46
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/32; D02G3/328
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
A covered elastic yarn comprising, 1. two filament groups consisting of a thermoplastic multifilament thread and an elastic thread, 2. said elastic thread being larger in diameter than the filaments forming said thermoplastic multi-filament, 3. said elastic thread being positioned in a central portion of the filaments of said thermoplastic multi-filament thread, said filaments being distributed about said central portion and closely adjacent thereto, 4. respective filaments of said thermoplastic multi-filament thread being wrapped spirally around said elastic thread, the wrapping direction thereof being reversed at irregular intervals in the longitudinal direction of said elastic threads, and 5. said thermoplastic multi-filament thread and said elastic thread being substantially twistless. CM,2Ered elastic yarn according to claim 1, wherein said filaments of said thermoplastic multi-filament thread are partially adhered to said elastic thread along the longitudinal direction thereof.
Claim 2
Dependent Claim
14 words
said elastic thread being larger in diameter than the filaments forming said thermoplastic multi-filament,
Claim 3
Dependent Claim
14 words
said elastic thread being larger in diameter than the filaments forming said thermoplastic multi-filament,
Claim 4
Dependent Claim
29 words
said elastic thread being positioned in a central portion of the filaments of said thermoplastic multi-filament thread, said filaments being distributed about said central portion and closely adjacent thereto,
Claim 5
Dependent Claim
29 words
said elastic thread being positioned in a central portion of the filaments of said thermoplastic multi-filament thread, said filaments being distributed about said central portion and closely adjacent thereto,
Claim 6
Dependent Claim
19 words
A covered elastic yarn, according to claim 1, wherein said centrally disposed elastic thread consists of a thermoplastic material.
Claim 7
Dependent Claim
19 words
A covered elastic yarn, according to claim 1, wherein said centrally disposed elastic thread consists of a multi-filament yarn.
Claim 8
Dependent Claim
32 words
respective filaments of said thermoplastic multi-filament thread being wrapped spirally around said elastic thread, the wrapping direction thereof being reversed at irregular intervals in the longitudinal direction of said elastic threads, and
Claim 9
Dependent Claim
32 words
respective filaments of said thermoplastic multi-filament thread being wrapped spirally around said elastic thread, the wrapping direction thereof being reversed at irregular intervals in the longitudinal direction of said elastic threads, and
Claim 10
Dependent Claim
40 words
said thermoplastic multi-filament thread and said elastic thread being substantially twistless. 2 A covered elastic yarn according to claim 1, wherein said filaments of said thermoplastic multi-filament thread are partially adhered to said elastic thread along the longitudinal direction thereof.
Claim 11
Dependent Claim
27 words
A covered elastic yarn, according to claim 1, wherein said centrally disposed elastic thread consists of an essentially monofilament yarn formed by coalescing a thermoplastic multi-filament yarn.
Claim 12
Dependent Claim
32 words
A covered elastic yarn, according to claim 5, wherein said filaments of said thermoplastic multi-filament thread disposed about said elastic tHread are partially adhered to said elastic thread along the length 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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |