US2901312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process utilizing fluidized beds in the dyeing of fabrics, yarns and the like
Assignee: BRITISH RAYON RES ASS
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Filing: 1956-05-03
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Granted: 1959-08-25
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Expires: 1976-05-03
Abstract
No abstract record available.
Inventors
- 👤 Audas Francis George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:38
CPC Classifications
D; D06; D06B; D06B19/00; D06B19/0005; D06B19/0076; D06B19/0082; D06P; D06P5/00; D06P5/20; D06P5/2066; D06P5/2088; Y; Y10; Y10S; Y10S264/00; Y10S264/51; Y10S8/00; Y10S8/04; Y10S8/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A METHOD OF DYEING FILAMENTS, FIBRES, THREADS, YARNS, FILMS, AND SHEETS MADE OF A SYNTHETIC FIBROUS MATERIAL, COMPRISING THE STEPS OF PASSING A SYNTHETIC FIBROUS MATE RIAL ADAPTED TO BE DYED INTO A DYE BATH BEING ADAPTED TO ING ASSISTANT, THE DYE OF SAID BATH BEING ADAPTED TO BE FIXED AT A PREDETERMINED TEMPERATURE; PADDING SAID DYE ONTO SAID SYNTHETIC FIBROUS MATERIAL; AND PASSING THE THUS TREATED SYNTHETIC FIBROUS MATERIAL CONTAINING SAID DYE THROUGH A BED OF HOT, SOLID, DISCRETE PARTICLES, WHILE SUBJECTING THE BED TO AN UPWARD GASEOUS CURRENT, THE SIZE AND WEIGHT OF THE PARTICLES AND THE VELOCITY AND NATURE OF THE CURRENT BEING SO CHOSEN THAT THE FORCE EXERTED BY THE CURRENT IS SUFFICIENT TO COUNTER-BALANCE THE GRAVITATIONAL FORCE ON FREE PARTICLES AND TO EXPAND THE BED THUS ALLOWING MOVEMENT OF THE PARTICLES BUT IS INSUFFICIENT TO CONVERT THE BED INTO UNIDIRECTIONAL STREAM OF MOVING PARTICLES, THE TEMPERATURE OF THE BED BEING SUBSTANTIALLY AT SIAD PREDETERMINED TEMPERATURE AND THE RATE AT WHICH SAID TREATED SYNTHETIC FIBROUS MATERIAL IS PASSED THERETHROUGH, BEING ADJUSTED TO FIX SAID DYE INTO SAID SYNTHETIC FIBROUS MATERIAL.
Claim 2
Independent Claim
184 words
A METHOD OF DYEING FILAMENTS, FIBRES, THREADS, YARNS, FILMS, AND SHEETS MADE OF A SYNTHETIC FIBROUS MATERIAL, COMPRISING THE STEPS OF PASSING A SYNTHETIC FIBROUS MATE RIAL ADAPTED TO BE DYED INTO A DYE BATH BEING ADAPTED TO ING ASSISTANT, THE DYE OF SAID BATH BEING ADAPTED TO BE FIXED AT A PREDETERMINED TEMPERATURE; PADDING SAID DYE ONTO SAID SYNTHETIC FIBROUS MATERIAL; AND PASSING THE THUS TREATED SYNTHETIC FIBROUS MATERIAL CONTAINING SAID DYE THROUGH A BED OF HOT, SOLID, DISCRETE PARTICLES, WHILE SUBJECTING THE BED TO AN UPWARD GASEOUS CURRENT, THE SIZE AND WEIGHT OF THE PARTICLES AND THE VELOCITY AND NATURE OF THE CURRENT BEING SO CHOSEN THAT THE FORCE EXERTED BY THE CURRENT IS SUFFICIENT TO COUNTER-BALANCE THE GRAVITATIONAL FORCE ON FREE PARTICLES AND TO EXPAND THE BED THUS ALLOWING MOVEMENT OF THE PARTICLES BUT IS INSUFFICIENT TO CONVERT THE BED INTO UNIDIRECTIONAL STREAM OF MOVING PARTICLES, THE TEMPERATURE OF THE BED BEING SUBSTANTIALLY AT SIAD PREDETERMINED TEMPERATURE AND THE RATE AT WHICH SAID TREATED SYNTHETIC FIBROUS MATERIAL IS PASSED THERETHROUGH, BEING ADJUSTED TO FIX SAID DYE INTO SAID SYNTHETIC FIBROUS MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |