US4104019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixation of dyes and other chemicals in textile fibres
Assignee: Dawson International PLC
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Filing: 1976-05-18
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Granted: 1978-08-01
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Expires: 1996-05-18
Abstract
Abstract For the fixation of dyes and other chemicals in textile fibres, however formed or combined, such fibres are conveyed through a closely confining tube located between electrodes by which a radio frequency energy field is created in the tube, the packing of the tube with such fibres being sufficiently dense to ensure that, when heated by the energy field, the tube and its contents form a partially self-sealing pressure chamber whereby the rate of reaction of the dye or chemical on the fibres is accelerated. Various embodiments of apparatus for the performance of such a fixation process on fibres of different forms and combinations are also shown.
Inventors
- 👤 Geoffrey Allan Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:03
CPC Classifications
D; D06; D06M; D06M10/00; D06M10/006; D06B; D06B19/00; D06B19/0005; D06B19/007; D06M10/003; D06P; D06P5/00; D06P5/20; D06P5/2066; D06P5/2083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A process for the fixation of dyes and other chemicals in textile fibres, however formed or combined, which comprises continuously mechanically conveying fibres which have been wetted with dye or other chemical substance through a closely confining tube located between electrodes by which a radio frequency energy field is created in the tube, the packing of the tube being sufficiently dense as to ensure that when heated by the energy field the tube and its contents form a partially self sealing pressure chamber due to generation of steam from the wetted fibres whereby the rate of reaction of the dye or chemical on the fibres is accelerated.
Claim 2
Dependent Claim
107 words
A process for the fixation of dyes and other chemicals in textile fibres, however formed or combined, which comprises continuously mechanically conveying fibres which have been wetted with dye or other chemical substance through a closely confining tube located between electrodes by which a radio frequency energy field is created in the tube, the packing of the tube being sufficiently dense as to ensure that when heated by the energy field the tube and its contents form a partially self sealing pressure chamber due to generation of steam from the wetted fibres whereby the rate of reaction of the dye or chemical on the fibres is accelerated.
References Cited (Backward Citations)
CA727594A
Cited
US2366347A
Cited
US2460206A
Cited
GB1022651A
Cited
FR1344538A
Cited
US3572286A
Cited
US3579372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-31 | 1982-01-30 | 1982-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-31 | 1986-01-30 | 1986-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-31 | 1990-01-30 | 1990-08-01 | $7700.00 | Window Closed / Lapsed |