Systems for marking a magnetic tape with a repetitive pattern
Abstract
Abstract A SYSTEMS FOR MARKING A MAGNETIC TAPE WITH A REPETITIVE PATTERN OF MARKS IS DISCLOSED, WHICH SYSTEM IS PARTICULARLY USEFUL IN A PAPER-CUTTING MACHINE OF THE TYPE WHICH EMPLOYS A BACK GAUGE MOVABLE ALONG A WORKTABLE TO POSITION A LOAD OF PAPER OR THE LIKE WITH RESPECT TO A RECIPROCATING GUILLOTINETYPE KNIFE BLADE. THE SYSTEM INCLUDES A RECORDING HEAD, AND A READING HEAD SPACED THERE BEHIN BY A PREDETERMINED DISTANCE WHICH CORRESPONDS TO A DESIRED SPACING OF THE MARKS OF THE REPETITIVE PATTERN OF MARKS ON THE TAPE. THE RECORDING HEAD PLACES A FIRST MARK ON THE TAPE. THEREAFTER, WHEN THE READING HEAD SENSES THE PRESENCE OF THE MARK, IT ENERGIZES THE RECORDING HEAD, NOW FURTHER DOWNSTREAM ON THE TAPE, TO PLACE A SECOND MARK ON THE TAPE. THIS "LEAPFROG" ACTION CONTINUES UNTIL THE REPETITIVE PATTERN IS COMPLETE
Inventors
- 👤 Carl Thumim
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |