US3577720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for twisting yarn
Assignee: Individual
•
Filing: 1968-12-18
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Granted: 1971-05-04
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Expires: 1988-12-18
Abstract
Abstract A yarn-twisting device is provided in which twisting single fibers fed into a spinning chamber is carried out by using the energy of an air vortex. The device is provided with means for creating an intensive vortical air current and a means ensuring a fine adjustment of aerodynamic spinning conditions.
Inventors
- 👤 Natan Albertovich Zax
- 👤 Vasily Porfirievich Korzhov
- 👤 Roza Semenovna Rabinovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:39
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
204 words
A device for twisting yarn comprising: a stationary chamber, said chamber having an inlet for the introduction of single fibers, said chamber having an outlet hole for discharge of twisted yarn, means for directing flow of air through said chamber and into said hole, means for producing a vortical air current in said chamber to twist the fibers, the latter means comprising a funnel at said outlet hole having an axial bore for outlet of the twisted yarn, a bushing surrounding said funnel, said bushing and funnel having facing surfaces which are bodies of revolution and define an annular channel around said funnel leading to said chamber in coaxially surrounding relation to said outlet hole, a compressed air chamber surrounding said bushing, means for directing compressed air into said compressed air chamber, said bushing having tangential channels leading from said compressed air chamber to said annular channel whereby compressed air can flow from said compressed air chamber to said annular channel where the air is intensively whirled and thence into said chamber to effect twisting of the fibers and their formation into yarn, said annular channel narrowing in the direction towards said chamber and thus in the direction of airflow in said annular channel.
Claim 2
Independent Claim
204 words
A device for twisting yarn comprising: a stationary chamber, said chamber having an inlet for the introduction of single fibers, said chamber having an outlet hole for discharge of twisted yarn, means for directing flow of air through said chamber and into said hole, means for producing a vortical air current in said chamber to twist the fibers, the latter means comprising a funnel at said outlet hole having an axial bore for outlet of the twisted yarn, a bushing surrounding said funnel, said bushing and funnel having facing surfaces which are bodies of revolution and define an annular channel around said funnel leading to said chamber in coaxially surrounding relation to said outlet hole, a compressed air chamber surrounding said bushing, means for directing compressed air into said compressed air chamber, said bushing having tangential channels leading from said compressed air chamber to said annular channel whereby compressed air can flow from said compressed air chamber to said annular channel where the air is intensively whirled and thence into said chamber to effect twisting of the fibers and their formation into yarn, said annular channel narrowing in the direction towards said chamber and thus in the direction of airflow in said annular channel.
Claim 3
Dependent Claim
26 words
A device as claimed in claim 1 coMprising means supporting said funnel and bushing for relative axial displacement to vary the size of said annular channel.
Claim 4
Dependent Claim
18 words
A device as claimed in claim 1 wherein said facing surfaces of the funnel and bushing are conical.
References Cited (Backward Citations)
US2194565A
Cited
US2944381A
Cited
US2928228A
Cited
US2926483A
Cited
GB880239A
Cited
US3110950A
Cited
US3445995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |