US3726079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic textile yarn
Assignee: Hercules LLC
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Filing: 1971-07-12
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Granted: 1973-04-10
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Expires: 1991-07-12
Abstract
Abstract This invention relates to forming synthetic textile yarn by the fibrillation of a thermoplastic ribbon, and particularly to a yarn having increased bulk, resilience and luster formed by the fibrillation of a striated ribbon, and comprises engaging the ribbon by edge means having teeth on a gauge equal to a whole number multiple in excess of two of the gauge of the striations of the film, and the teeth on the successive edge means are aligned angularly whereby the teeth will engage the film continuously between the same two striations to split the ribbon into continuous filaments each of which consists of two or more striations.
Inventors
- 👤 G Feild
- 👤 C Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:08
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
A synthetic yarn comprising a plurality of continuous longitudinally-oriented filaments having an irregular crosssection that is substantially uniform along the length thereof and including two to three striations extending in spaced parallel relation lengthwise of each filament with each pair of adjacent striations interconnected by a web of reduced thickness relative to the thickness of said striations and with the opposed outer edges of each filament having a web portion extending laterally from the outer edges of the outermost striations and terminating in a split edge.
Claim 2
Dependent Claim
86 words
A synthetic yarn comprising a plurality of continuous longitudinally-oriented filaments having an irregular crosssection that is substantially uniform along the length thereof and including two to three striations extending in spaced parallel relation lengthwise of each filament with each pair of adjacent striations interconnected by a web of reduced thickness relative to the thickness of said striations and with the opposed outer edges of each filament having a web portion extending laterally from the outer edges of the outermost striations and terminating in a split edge.
Claim 3
Dependent Claim
32 words
A synthetic yarn in accordance with claim 1 having a plurality of fibrils integral at one end with said filaments at the split edges thereof and extending therefrom to a free end.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |