US3882666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of spinning yarns in spinning turbines
Assignee: Fried Krupp AG
•
Filing: 1973-12-06
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Granted: 1975-05-13
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Expires: 1993-12-06
Abstract
Abstract In the formation of yarn, in an open-end spinning turbine, from a stream of fibers fed into the turbine together with entrained air, the formation operation is improved by extracting such air from the turbine in a direction toward the region of introduction of the fibers.
Inventors
- 👤 Peter Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:11
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
In a method for independently extracting air from an open-end spinning turbine having an inlet region and a yarn extraction region spaced axially therefrom, during the formation of yarn from a stream of fibers fed into the turbine at the inlet region, in which air is drawn into the turbine together with such fibers, is guided into the turbine by a surface of a hollow body at least partially enclosed by the turbine, and is sucked out of the turbine in a direction having an axial component directed toward the inlet region, the improvement wherein the sucking of air out of the turbine comprises: sucking air through an annular gap provided in the body ; and directing the air from the region of such gap toward the axis of rotation of the turbine.
Claim 2
Dependent Claim
133 words
In a method for independently extracting air from an open-end spinning turbine having an inlet region and a yarn extraction region spaced axially therefrom, during the formation of yarn from a stream of fibers fed into the turbine at the inlet region, in which air is drawn into the turbine together with such fibers, is guided into the turbine by a surface of a hollow body at least partially enclosed by the turbine, and is sucked out of the turbine in a direction having an axial component directed toward the inlet region, the improvement wherein the sucking of air out of the turbine comprises: sucking air through an annular gap provided in the body ; and directing the air from the region of such gap toward the axis of rotation of the turbine.
Claim 3
Dependent Claim
26 words
A method as defined in claim 1 wherein the turbine defines a fiber collection trough and the air is extracted from the vicinity of such trough.
Claim 4
Dependent Claim
20 words
A method as defined in claim 2 wherein the annular gap is in the vicinity of the fiber collecting trough.
Claim 5
Dependent Claim
19 words
A method as defined in claim 1 wherein the turbine is provided with a large diameter fiber extraction bore.
Claim 6
Dependent Claim
38 words
A method as defined in claim 1 wherein the open-end spinning turbine is associated with a coaxial break-up roller constituting the body and said step of extracting is carried out by sucking the air through the break-up roller.
Claim 7
Dependent Claim
33 words
A method as defined in claim 5 wherein the turbine defines a fiber collection trough and the break-up roller is provided with the annular gap in the vicinity of the fiber collecting trough.
References Cited (Backward Citations)
US3328949A
Cited
US3411283A
Cited
US3584452A
Cited
US3732681A
Cited
US3757506A
Cited
US3774386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |