US3715255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for bias laying with flat mandrel
Assignee: International Paper Co
•
Filing: 1970-12-07
•
Granted: 1973-02-06
•
Expires: 1990-12-07
Abstract
Abstract AT LEAST ONE WEB OF MATERIAL IS SPIRALLY WOUND ON A FLAT MANDREL TO FORM A TUBE WHICH IS TRANSFERRED BY MEANS ACROSS A GAP TO A NIP OF A PAIR OF FATTENING ROLLS. MORE SPECIFICALLY, THE TRANSFER MEANS INCLUDES A PAIR OF TRANSFER BELTS WHICH ENGAGE THE EXTERNAL EDGES OF THE TUBE AND HOLD THE SAME AGAINST SAGGING OR WRACKING AND KEEP THESE EDGES MOVING AT THE SAME RATE OF TRAVEL ACROSS THE GAP AS THE TUBE TRAVELS ON THE MANDREL.
Inventors
- 👤 C Lee
- 👤 W Furbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:00
CPC Classifications
B; B31; B31C; B31C3/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18072
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |