US3584451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber processing method and device
Assignee: Vyzkumny Ustav Bavlnarsky AS
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Filing: 1969-12-10
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Granted: 1971-06-15
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Expires: 1989-12-10
Abstract
Abstract Fibrous sliver is carded for separating it into its constituent fibers. A stream of gaseous fluid is advanced in a predetermined path, and the separated fibers are advanced in an other path which intercepts the predetermined path at an acute angle so that the direction of advancement of the fibers entering the predetermined path from the other path is altered at this acute angle in response to engagement of the fibers by the stream of gaseous fluid whereupon the fibers are straightened out and conveyed to a rotary spinning chamber.
Inventors
- 👤 Milan Chrtek
- 👤 Jaroslav Jires
- 👤 Stanislav Didek
- 👤 Ctibor Doudlebsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:54
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/30; D01H4/32
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
77 words
A method as defined in claim 1, wherein the step of carding said fibrous sliver comprises rotating a carding roller in a predetermined direction with a first increment of the circumferential surface of said carding roller exposed in said other path and a downstream second increment exposed in said predetermined path; and wherein said predetermined direction of rotation of said second increment is opposite to the direction of said stream of gaseous fluid in said predetermined path.
Claim 2
Dependent Claim
61 words
A method as defined in claim 2, said paths being in part surrounded by wall means forming at the intersection of said paths an edge located oppositely the direction of advancement of said stream of gaseous fluid; and wherein the fibers of said stream of fibers are deflected over said edge in response to movement into the intersection of said paths.
Claim 3
Dependent Claim
94 words
A method as defined in claim 3, the fibers of said stream adhering to said circumferential surface of said carding roller during advancement in said other path; and said fibers having leading ends which are deflected over said edge in the direction of movement of said gaseous fluid in response to entry into the intersection of said paths and while the respective trailing ends still adhere to said circumferential surface, and the trailing ends of said fibers subsequently being deflected over said edge so that said fibers straighten and advance in said predetermined path.
Claim 4
Dependent Claim
62 words
A method as defined in claim 1, said predetermined path having a downstream portion communicating with the interior of a rotating spinning chamber which communicates with the ambient atmosphere; and wherein said stream of gaseous fluid is aspirated in said predetermined path in response to rotation of said spinning chamber and centrifugal expulsion of gaseous fluid from the interior of the same.
Claim 5
Dependent Claim
27 words
A method as defined in claim 1, said predetermined path having an upstream portion; and further comprising blowing said stream of gaseous fluid into said upstream portion.
Claim 6
Dependent Claim
124 words
A spinning device, comprising housing means defining two paths which intersect one another at an acute angle; a carding roller having a circumferential carding surface partly projecting into one of said paths and partly projecting into the other of said paths; a rotary spinning chamber having an interior fiber slip wall communicating with said other path downstream of said intersection; means producing a flow of gaseous fluid through said other path across said intersection and toward said slip wall in a sense substantially opposite the direction of movement of that part of said carding roller which projects into said other path; and feed means feeding fibrous sliver into said one path upstream of said carding roller for separation thereby and advancement to said intersection.
Claim 7
Dependent Claim
38 words
A spinning device as defined in claim 7, said wall means defining a deflecting edge for said fibers at a side of said intersection which is downstream with reference to the direction of said stream of gaseous fluid.
Claim 8
Dependent Claim
21 words
A spinning device as defined in claim 8, wherein said edge is spaced from said slip wall by a predetermined distance.
Claim 9
Dependent Claim
21 words
A spinning device as defined in claim 9, wherein said distance at least equals the average staple length of said fibers.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |