Tube reducing and elongating apparatus
Abstract
Abstract TUBE REDUCING AND ELONGATING APPARATUS OF THE "DIESCHER" TYPE HAVING A MAIN FRAME ROTATABLY SUPPORTING OPPOSED, BARREL-SHAPED, TUBE WORKING ROLLS WHICH FORM A PASS FOR THE TUBE AND HAVING OPPOSED, TUBE-CONFINING DISKS AT THE WORKING ROLL PASS ROTATABLY MOUNTED IN RESPECTIVE SUB-FRAMES WHICH ARE EASILY REMOVABLE FROM THE MAIN FRAME FOR READY REPAIR OR REPLACEMENT OF THE DISKS. IN ADDITION, THE MANDREL NORMALLY DISPOSED WITHIN THE TUBE BEING ELONGATED IS ROTATED THEREWITH AT THE SAME SPEED AND IN THE SAME DIRECTION AS THE THEORETICAL ROTATIONAL SPEED IMPARTED TO THE TUBE BY THE WORKING ROLLS AND THE MANDREL IS SIMULTANEOUSLY ADVANCED WITH THE TUBE AT THE SAME SPEED AT WHICH IT EXITS FROM THE PASS FORMED BY THE WORKING ROLLS AND THE DISKS.
Inventors
- 👤 Ernest G Unrath
Bibliographic Details
Claims Analysis
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |