US3225446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for handling filaments
Assignee: Sobrevin Societe de Brevets Industriels
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Filing: 1962-10-29
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Granted: 1965-12-28
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Sarfati Alberto Gustavo
- 👤 Vischiani Giuseppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:21
CPC Classifications
D; D03; D03D; D03D47/00; B; B65; B65H; B65H51/00; B65H51/20; B65H51/22; B65H61/00; B65H2551/00; B65H2551/20; B65H2551/22; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF HANDLING A FILAMENT OF INDETERMINATE LENGTH, COMPRISING WINDING THE FILAMENT ON A DRUM FROM A DIRECTION SUBSTANTIALLY TANGENTIAL TO THE DRUM AT A FIRST LINEAR VELOCITY OF THE FILAMENT TO FORM A SINGLE LAYER OF TURNS OF FILAMENT ON THE DRUM, ADVANCING SAID LAYER BY PRESSURE OF THE LAST TURN OF THE ALYER, SIMULTANEOUSLY WITHDRAWING SAID FILAMENT FROM THE DRUM IN A DIRECTION SUBSTANTIALLY ENDWISE OF THE DRUM AT A SECOND VELOCITY OF THE FILAMENT WHICH IS SUBSTANTIALLY DIFFERENT FROM SAID FIRST VELOCITY, AND EXERTING ON SID FILAMENT AS IT LEAVES THE DRUM A RETARDING FORCE THAT MAINTAINS THE WITHDRAWN FILAMENT AT CONSTANT TENSION.
Claim 2
Independent Claim
107 words
A METHOD OF HANDLING A FILAMENT OF INDETERMINATE LENGTH, COMPRISING WINDING THE FILAMENT ON A DRUM FROM A DIRECTION SUBSTANTIALLY TANGENTIAL TO THE DRUM AT A FIRST LINEAR VELOCITY OF THE FILAMENT TO FORM A SINGLE LAYER OF TURNS OF FILAMENT ON THE DRUM, ADVANCING SAID LAYER BY PRESSURE OF THE LAST TURN OF THE ALYER, SIMULTANEOUSLY WITHDRAWING SAID FILAMENT FROM THE DRUM IN A DIRECTION SUBSTANTIALLY ENDWISE OF THE DRUM AT A SECOND VELOCITY OF THE FILAMENT WHICH IS SUBSTANTIALLY DIFFERENT FROM SAID FIRST VELOCITY, AND EXERTING ON SID FILAMENT AS IT LEAVES THE DRUM A RETARDING FORCE THAT MAINTAINS THE WITHDRAWN FILAMENT AT CONSTANT TENSION.
References Cited (Backward Citations)
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US1946313A
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US2214332A
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US2434210A
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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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |