US3910023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for open-end spinning
Assignee: Fried Krupp AG
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Filing: 1974-09-30
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Granted: 1975-10-07
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Expires: 1994-09-30
Abstract
Abstract In an open-end spinning apparatus including a rotatably mounted break-up roller member and a rotatably mounted spinning rotor member, only one of the members is directly driven while the other member is not directly connected to any drive unit and is indirectly driven by forces produced by the directly driven member while the two members are prevented from physically contacting one another. Preferably, one member carries a multiple-pole magnet and the other member is made of electrically conductive material.
Inventors
- 👤 Peter Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:25
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
In apparatus for open-end spinning and including two parts mounted for coaxial rotation in the same direction and constituting, respectively, a break-up roller for breaking up a stream of fibers and a spinning rotor arranged to receive fibers which have been broken up by the break-up roller and to spin them into a length of yarn, the improvement comprising: direct drive means connected for directly rotating only one of said parts; and indirect drive means connected to at least one of said parts for causing the part not directly rotated by said drive means to be rotated exclusively by the rotation of said part which is directly driven by said drive means, while preventing physical driving contact between said parts.
Claim 2
Dependent Claim
120 words
In apparatus for open-end spinning and including two parts mounted for coaxial rotation in the same direction and constituting, respectively, a break-up roller for breaking up a stream of fibers and a spinning rotor arranged to receive fibers which have been broken up by the break-up roller and to spin them into a length of yarn, the improvement comprising: direct drive means connected for directly rotating only one of said parts; and indirect drive means connected to at least one of said parts for causing the part not directly rotated by said drive means to be rotated exclusively by the rotation of said part which is directly driven by said drive means, while preventing physical driving contact between said parts.
Claim 3
Dependent Claim
19 words
An arrangement as defined in claim 1 wherein said drive means are connected for directly rotating said spinning rotor.
Claim 4
Dependent Claim
58 words
An arrangement as defined in claim 2 wherein said rotor presents a surface which faces a surface of said roller, and said indirect drive means comprise means carried by one of said parts, at its said surface, for inducing cyclically alternating magnetic force effects in said surface of said other part, when relative rotation occurs between said parts.
Claim 5
Dependent Claim
41 words
An arrangement as defined in claim 3 wherein said magnetic force effect means comprise at least one permanent magnet carried by said roller and said rotor is made of electrically conductive material at least in the region of its said surface.
Claim 6
Dependent Claim
42 words
An arrangement as defined in claim 4 wherein said surfaces lie transversely to the axis of rotation of said parts and further comprising mounting means supporting one of said parts for movement in a direction to adjust the distance between said surfaces.
Claim 7
Dependent Claim
21 words
An arrangement as defined in claim 5 wherein said mounting means support said roller for movement along its axis of rotation.
References Cited (Backward Citations)
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Cited
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US3732681A
Cited
US3757506A
Cited
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Cited
US3891075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |