US4148179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for yarn treatment
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1977-12-01
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Granted: 1979-04-10
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Expires: 1997-12-01
Abstract
Abstract A process and apparatus for modifying the properties of a bulked yarn in which the bulked yarn is passed through a conduit and is subjected therein to twisting by fluid and at least one cycle of softening the yarn by heated fluid and cooling by fluid.
Inventors
- 👤 Tilo Becker
- 👤 Hermann Storck
- 👤 Terence A. Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:15
CPC Classifications
D; D02; D02J; D02J1/00; D02G; D02G1/00; D02G1/20
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
47 words
A continuous process for modifying the properties of a bulked yarn in which the bulked yarn is passed through a conduit and is subjected therein to (a) twisting by fluid and (b) at least one cycle of softening the yarn by heated fluid and cooling by fluid.
Claim 2
Dependent Claim
47 words
A continuous process for modifying the properties of a bulked yarn in which the bulked yarn is passed through a conduit and is subjected therein to (a) twisting by fluid and (b) at least one cycle of softening the yarn by heated fluid and cooling by fluid.
Claim 3
Dependent Claim
22 words
A process according to claim 1 wherein twisting the yarn by fluid comprises directing four streams of fluid tangentially onto the yarn.
Claim 4
Dependent Claim
22 words
A process according to claim 1 wherein the fluid to twist the yarn is hot and also serves to heat the yarn.
Claim 5
Dependent Claim
19 words
A process according to claim 1 wherein the fluid to twist the yarn also serves to forward the yarn.
Claim 6
Dependent Claim
23 words
A process according to claim 1 wherein the bulked yarn is stretched to dephase its crimp before it is passed into the conduit.
Claim 7
Dependent Claim
19 words
A process according to claim 1 wherein the filaments of the yarn are intermingled in the conduit by fluid.
Claim 8
Dependent Claim
31 words
A process according to claim 1 wherein the yarn is heated by the hot fluid to a temperature such that at least some of the filaments of the yarn fuse together.
Claim 9
Dependent Claim
12 words
A modified bulked yarn produced by a process according to claim 1.
Claim 10
Independent Claim
86 words
An apparatus for modifying the properties of a bulked yarn comprising a conduit having at least two longitudinally-spaced jet arrangements (a) at least one jet arrangement having means to direct fluid into the conduit such as to exert a twisting action on a yarn in the conduit and (b) at least one jet arrangement having means to direct heated fluid into the conduit for heating the yarn and (c) at least one jet arrangement having means to direct fluid into the conduit to cool the yarn.
Claim 11
Independent Claim
86 words
An apparatus for modifying the properties of a bulked yarn comprising a conduit having at least two longitudinally-spaced jet arrangements (a) at least one jet arrangement having means to direct fluid into the conduit such as to exert a twisting action on a yarn in the conduit and (b) at least one jet arrangement having means to direct heated fluid into the conduit for heating the yarn and (c) at least one jet arrangement having means to direct fluid into the conduit to cool the yarn.
Claim 12
Dependent Claim
18 words
An apparatus according to claim 9 wherein the cross-sectional area of the conduit is non-uniform along its length.
Claim 13
Dependent Claim
19 words
An apparatus according to claim 9 wherein the conduit has one jet arrangement to twist and heat the yarn.
Claim 14
Dependent Claim
32 words
An apparatus according to claim 9 wherein the jet arrangement means for twisting comprises four discrete channels which are equispaced about the axis of the conduit and which enter the conduit eccentrically.
Claim 15
Dependent Claim
25 words
An apparatus according to claim 9 wherein the conduit has at least one jet whose geometry is arranged to intermingle the filaments of the yarn.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |