US3022564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for removing protruding fibers from spun thermoplastic linear polymer yarns
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1958-06-02
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Granted: 1962-02-27
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Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Price Frederick Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:41
CPC Classifications
D; D02; D02J; D02J3/00; D02J3/12; D02J3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR REMOVING PROTRUDING FIBRES FROM A SPUN YARN COMPRISING SYNTHETIC THERMOPLASTIC LINEAR POLYMER WITH A SINGEING DEVICE, HAVING A PLURALITY OF HOT SUBSTANTIALLY FLAT SURFACES DISPOSED IN SPACED SUCCESSION ALONG THE YARN PATH ON BOTH SIDES THEREOF WITH THE PLANES OF SAID SURFACES AT SUBSTANTIALLY RIGHT ANGLES TO SAID YARN PATH AND THE EDGES THEREOF ADJACENT SAID YARN PATH, WHICH COMPRISES PASSING SAID YARN THROUGH SAID DEVICE SUFICIENTLY CLOSE TO SAID SURFACES THAT THE PROTRUDING FIBRES STRIKE SAID SURFACES AS THE YARN PASSES ALONG SAID YARN PATH THROUGH THE SINGEING DEVICE, AND MAINTAINING SAID SURFACES AT A SUBSTANTIALLY UNIFORM TEMPERATURE ABOVE 500*C. WHEREBY THE PROTRUDING FIBRES ARE SEVERED AT THE EDGES OF SAID FLAT SURFACES.
Claim 2
Dependent Claim
117 words
A PROCESS FOR REMOVING PROTRUDING FIBRES FROM A SPUN YARN COMPRISING SYNTHETIC THERMOPLASTIC LINEAR POLYMER WITH A SINGEING DEVICE, HAVING A PLURALITY OF HOT SUBSTANTIALLY FLAT SURFACES DISPOSED IN SPACED SUCCESSION ALONG THE YARN PATH ON BOTH SIDES THEREOF WITH THE PLANES OF SAID SURFACES AT SUBSTANTIALLY RIGHT ANGLES TO SAID YARN PATH AND THE EDGES THEREOF ADJACENT SAID YARN PATH, WHICH COMPRISES PASSING SAID YARN THROUGH SAID DEVICE SUFICIENTLY CLOSE TO SAID SURFACES THAT THE PROTRUDING FIBRES STRIKE SAID SURFACES AS THE YARN PASSES ALONG SAID YARN PATH THROUGH THE SINGEING DEVICE, AND MAINTAINING SAID SURFACES AT A SUBSTANTIALLY UNIFORM TEMPERATURE ABOVE 500*C. WHEREBY THE PROTRUDING FIBRES ARE SEVERED AT THE EDGES OF SAID FLAT SURFACES.
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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) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |