US4384689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross wound yarn package
Assignee: Imperial Chemical Industries Ltd
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Filing: 1981-03-27
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Granted: 1983-05-24
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Expires: 2001-03-27
Abstract
Abstract The invention comprises (a) an improved cross wound yarn package on which the final few turns of yarn are wound as a compact pile wound bunch on the cylindrical cross wound package surface; (b) apparatus for winding such a package, comprising a fixed pile winding guide (4 in FIG. 3) as well as a traverse guide (1 in FIG. 3) and means effective to move the yarn from one to the other (5 in FIG. 3); and (c) a modified yarn traverse roll with an extra circumferential groove to aid pile winding (2 in FIG. 1) intersecting a helical traverse groove (1 in FIG. 1).
Inventors
- 👤 Allen A. Bloomfield
- 👤 James R. Goodall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:02
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/06; B65H54/28; B65H54/34; B65H54/346; B65H54/40; B65H54/46; B65H54/50; B65H65/00; B65H65/005; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
64 words
A cross wound package of flat melt-spun filament yarn characterised by the outer yarn end being pile wound in a compact bunch on the cross wound package surface, and wherein (i) the bunch comprises at least 20 turns; (ii) the coherency, C, of the bunch is at least 100 cm; and (iii) the unwinding tension, T, of the bunch is less than 0.5 g/dtex.
Claim 2
Dependent Claim
64 words
A cross wound package of flat melt-spun filament yarn characterised by the outer yarn end being pile wound in a compact bunch on the cross wound package surface, and wherein (i) the bunch comprises at least 20 turns; (ii) the coherency, C, of the bunch is at least 100 cm; and (iii) the unwinding tension, T, of the bunch is less than 0.5 g/dtex.
Claim 3
Dependent Claim
14 words
A package according to claim 1, wherein the bunch comprises 50 to 500 turns.
Claim 4
Dependent Claim
23 words
A package according to claim 1 wherein the pile turns are wound at a true traverse helix angle of less than one degree.
References Cited (Backward Citations)
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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) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |