US3587550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic ignition control system
Assignee: Fairbanks Morse Inc
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Filing: 1969-05-16
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Granted: 1971-06-28
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Expires: 1989-05-16
Abstract
Abstract THE ELECTRONIC IGNITION CONTROL SYSTEM INCLUDES A MAGNETIC TIMING PULSE SOURCE DRIVEN IN CORRELATION TO THE CRANKSHAFT OF AN ENGINE WHICH GENERATES TIMING PULSES TO CONTROL THE INTERVAL DURING WHICH AN IGNITION TRIGGER PULSE IS APPLIED TO A ROTATING TRANSFORMER DISTRIBUTOR. THE TRANSFORMER DISTRIBUTOR IS ALSO DRIVEN IN FIXED RELATIONSHIP TO THE ENGINE CRANKSHAFT, AND OPERATES TO COUPLE THE TRIGGER PULSE TO A POWER SWITCH FOR A SELECTED ENGINE CYLINDER. THE POWER SWITCH, UPON RECEIPT OF A TRIGGER PULSE, PASSES POWER FROM A POWER CIRCUIT TO AN IGNITION COIL, WHILE A BIASING VOLTAGE IS APPLIED TO PREVENT OPERATION OF THE POWER SWITCHES FOR THE REMAINING ENGINE CYLINDERS.
Inventors
- 👤 Richard Zechlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:23
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/02; F02P7/03
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 |