Patent US3588912A successfully refreshed from Google Patents.
US3588912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrojunction printing pulse driver circuit
Assignee: Individual
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Filing: 1969-06-05
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Granted: 1971-06-28
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Expires: 1989-06-05
Abstract
Abstract A SERIES RESONANT CIRCUIT IS CONNECTED TO A SOURCE OF POWER AND ARRANGED TO BE TRIGGERED FOR OSCILLATION THROUGH A PORTION OF A COMPLETE CYCLE. A CURRENT TRANSFORMER COUPLED ACROSS THE CAPACITOR OF THE RESONANT CIRCUIT HAS ITS HIGH CURRENT SECONDARY WINDING COUPLED TO A LOW IMPEDANCE LOAD SUCH AS THE ELECTROJUNCTION IN AN ELECTROJUNCTION PRINTING SYSTEM. HEAT BUILDUP IN THE LOAD IS COMPENSATED BY CONTROLLING THE TIME INTERVAL BETWEEN SUCCESSIVE OSCILLATORY CYCLES IN ACCORDANCE WITH THE TOTAL NUMBER OF SUCH CYCLES WHICH ARE APPLIED FURING A PRINTING PULSE.
Inventors
- 👤 Phonocopy Inc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/385; B41J2/425; H; H04; H04N; H04N1/00; H04N1/40; H04N1/40025
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 |