US3277641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawing of synthetic filaments
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1962-09-28
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Granted: 1966-10-11
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 O'donahue James
- 👤 Cochrane Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:18
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD OF OPERATING A DRAWISTER SO AS TO OBTAIN APPROXIMATELY EQUAL LENGTHS OF FILAMENTS ON A MULTIPLICITY OF PACKAGES, SAID DRAWTWISTER BEING OF THE KIND HAVING A MULTIPLICITY OF POSITIONS EACH OF WHICH INCLUDES A HEATED FEED ROLL, A DRAW ROLL AND A PACKAGING UNIT ALL DRIVEN AT A HIGH OPERATING SPEED DURING DRAWTWISTING BY A COMMON SOURCE, SAID METHOD COMPRISING: SEQUENTIALLY STRINGING-UP AT LEAST SOME OF SAID POSITIONS BY STRINGING A FILAMENT OVER AN ASSOCIATED FEED AND DRAW ROLL AND
Claim 2
Independent Claim
82 words
A METHOD OF OPERATING A DRAWISTER SO AS TO OBTAIN APPROXIMATELY EQUAL LENGTHS OF FILAMENTS ON A MULTIPLICITY OF PACKAGES, SAID DRAWTWISTER BEING OF THE KIND HAVING A MULTIPLICITY OF POSITIONS EACH OF WHICH INCLUDES A HEATED FEED ROLL, A DRAW ROLL AND A PACKAGING UNIT ALL DRIVEN AT A HIGH OPERATING SPEED DURING DRAWTWISTING BY A COMMON SOURCE, SAID METHOD COMPRISING: SEQUENTIALLY STRINGING-UP AT LEAST SOME OF SAID POSITIONS BY STRINGING A FILAMENT OVER AN ASSOCIATED FEED AND DRAW ROLL AND
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US2336100A
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US3025660A
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US2988866A
Cited
US3018608A
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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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |