US3587813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed and reverse mechanism for an inking ribbon
Assignee: Unisys Corp
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Filing: 1968-05-09
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Granted: 1971-06-28
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Expires: 1988-05-09
Abstract
Abstract AN INKING RIBBON IS FEEDINGLY WOUND ONTO EACH OF TWO SPOOLS BY THE ROTATION OF A SHAFT AND THE ALTERNATE COPPERATION OF A PAIR OF WORMS WITH A PAIR OF SPOOL SUPPORTING WORM WHEELS. WHEN RIBBON FEEDING IS INTERRUPTED BY THE UNWOUND CONDITION OF ONE SPOOL, THE SHAFT IS SHIFTED LATERALLY TO DISENGAGE THE WORM AMD WORM WHEEL ASSOCIATED WITH THE FULLY WOUND SPOOL AND TO ENGAGE THE WORM AND WORM WHEEL ASSOCIATED WITH THE UNWOUND SPOOL, SUCH SHIFTING MOVEMENT OF THE SHAFT BEING INITATED BY THE EXPELLING ACTION OF THE ACTIVE WORM FROM ITS ASSOCIATED WHEEL AND COMPLETED BY THE ACTION OF A BIASED DETENT PIN WHEEL AND COMPLETED BY THE ACTION SLOPES OF A DOUBLE-CONED ACTUATOR.
Inventors
- 👤 Pierre L Dugeny
- 👤 Jean R Gerain
- 👤 Michel C Quinaud
- 👤 Daniel C Zangheri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:54
CPC Classifications
B; B41; B41J; B41J33/00; B41J33/14; B41J33/40; B41J33/44; B41J33/51; B41J33/516
Claims Analysis
Total Claims: 0
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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) | 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 |