US3958310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for interlacing filaments of multifilament yarns
Assignee: Rhone Poulenc Textile SA
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Filing: 1974-12-12
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Granted: 1976-05-25
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Expires: 1994-12-12
Abstract
Abstract Multifilament yarn is interlaced by passing the yarn through an apparatus which impinges four streams or jets of fluid upon the yarn. The jets or streams of fluid are given a rotational component by auxiliary streams of air which impinge on the jets or streams with a tangential attitude. The yarn and impinging streams of fluid converge in a cavity located within an interlacing chamber wherein the height of the cavity is no greater than the smallest diameter of the cavity and wherein the inlet of the interlacing chamber is wider than the diameter of the cavity and the outlet of the interlacing chamber is narrower than the cavity.
Inventors
- 👤 Charles Blanc
- 👤 Christian Delarue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:15
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
75 words
A method of interlacing multifilament yarn by utilizing expanding fluid comprising the steps of: advancing the yarn through a work station; and impinging at least one jet of fluid on the yarn from a direction normal to the direction of advance of the yarn wherein the fluid has a rotational component imparted thereto before impinging on the yarn, wherein the axis of the rotational component is normal to the direction of advance of the yarn.
Claim 2
Independent Claim
75 words
A method of interlacing multifilament yarn by utilizing expanding fluid comprising the steps of: advancing the yarn through a work station; and impinging at least one jet of fluid on the yarn from a direction normal to the direction of advance of the yarn wherein the fluid has a rotational component imparted thereto before impinging on the yarn, wherein the axis of the rotational component is normal to the direction of advance of the yarn.
Claim 3
Dependent Claim
43 words
The method of claim 1 wherein a plurality of said fluid jets impinge on the advancing yarn and wherein the fluid jets are disposed in the same plane and are displaced relative to one another at an angle of between 30° and 180°.
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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |