US4989799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for winding a multifilament with flat shape and broad width
Assignee: Kamitsu Seisakusho Ltd
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Filing: 1989-12-18
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Granted: 1991-02-05
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Expires: 2009-12-18
Abstract
Abstract An apparatus for winding a multifilament in a flat shape with a broad width, including a self-rotatable mandrel and a yarn guiding device comprising a pair of conical rotatable roll, a generatrix of each being arranged in parallel to the other, and having a space in a direction perpendicular to a traverse direction of the multifilament, a collecting means arranged downstream of the pair of guide roll and collecting the multifilament along the traverse direction of the multifilament, and a spreading means downstream of the collecting means and spreading the multifilament along the traverse direction of the multifilament. The multifilament, such as a carbon fiber, can be wound in uniformly spread state on the mandrel by using the apparatus in accordance with the present invention.
Inventors
- 👤 Shoji Nakai
- 👤 Shuichiro Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:01
CPC Classifications
B; B65; B65H; B65H57/00; B65H57/006; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
195 words
An apparatus for winding a multifilament in a flat shape with a broad width, said apparatus comprising an independently driven mandrel for winding the multifilament and a yarn guiding device arranged upstream from the mandrel for feeding the multifilament spread into a flat shape with a borad width to the mandrel while applying a transverse movement to the multifilament; wherein said yarn guiding device comprises a pair of rotatably supported guide rolls each having a generatrix arranged in parallel to the other in such a manner that a space through which the multifilament can pass is formed in a direction perpendicular to the traverse direction of the multifilament between the pair of rotatably guide rolls, a collecting means arranged downstream of the pair of guide rolls for collecting the multifilament along the traverse direction of the multifilament, a spreading means arranged downstream of the collecting means for spreading the multifilament along the traverse direction of the multifilament, and means for movably mounting said mandrel whereby a distance between the mandrel and the spreading means is increased in accordance with an increase of a diameter of a yarn package of the multifilament wound on the mandrel.
Claim 2
Independent Claim
195 words
An apparatus for winding a multifilament in a flat shape with a broad width, said apparatus comprising an independently driven mandrel for winding the multifilament and a yarn guiding device arranged upstream from the mandrel for feeding the multifilament spread into a flat shape with a borad width to the mandrel while applying a transverse movement to the multifilament; wherein said yarn guiding device comprises a pair of rotatably supported guide rolls each having a generatrix arranged in parallel to the other in such a manner that a space through which the multifilament can pass is formed in a direction perpendicular to the traverse direction of the multifilament between the pair of rotatably guide rolls, a collecting means arranged downstream of the pair of guide rolls for collecting the multifilament along the traverse direction of the multifilament, a spreading means arranged downstream of the collecting means for spreading the multifilament along the traverse direction of the multifilament, and means for movably mounting said mandrel whereby a distance between the mandrel and the spreading means is increased in accordance with an increase of a diameter of a yarn package of the multifilament wound on the mandrel.
Claim 3
Dependent Claim
57 words
An apparatus according to claim 1, wherein said yarn guide device further comprises a curved face spreading means arranged between the pair of guide rolls and the collecting means for detecting the multifilament from a direction along the space of the pair of guide rolls to a direction parallel to the transverse direction and spreads the multifilament.
Claim 4
Dependent Claim
47 words
An apparatus according to claim 1, wherein said collecting means is a roll having one end rotatably supported, and an axis inclined in the traverse direction, having a shape tapered toward a free end thereof and with a concave curved face formed on a circumferential surface thereof.
Claim 5
Dependent Claim
33 words
An apparatus according to claim 1, wherein said collecting means is a rotatable concave roll arranged in such a manner that an axis of the concave roll is parallel to the traverse direction.
Claim 6
Dependent Claim
33 words
An apparatus according to claim 1, wherein said spreading means is a rotatable convex roll arranged in such a manner that an axis of the convex roll is parallel to the traverse direction.
Claim 7
Dependent Claim
61 words
An apparatus according to claim 2, wherein said curved face spreading means is a sphere-like roll having a convex surface on at least a portion of a circumferential surface thereof, and said sphere-like roll is rotatably supported in such a manner that a rotational axis of said sphere-like roll is in parallel to the space of the pair of guide rolls.
Claim 8
Dependent Claim
33 words
An apparatus according to claim 6, wherein said axis of the sphere-like roll is arranged on one of either sides apart from and just below the space of the pair of guide rolls.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |