Ignition systems for internal combustion engines
Abstract
Abstract IN AN IGNITION SYSTEM INTERNAL COMBUSTION ENGINE THE PROVISION OF A DEVICE FOR FAST SWITCHING THE PRIMARY CIRCUIT, THIS DEVICE INCLUDING AN INFRA-RED RADIATION SOURCE AND AN INFRA-RED RADIATION SENSITIVE ELEMENT, THE RADIATION PATH BEING INTERRUPTED IN TIMED RELATION TO THE ENGINE REVOLUTIONS WHEREBY SWITCHING CURENT IS PROVIDED WHICH IS AMPLIFIED FOR FAST SWITCHING TRANSISTORIZED ELEMENTS AND APPLIED TO THE PRIMARY WINDING OF THE IGNITION COIL. ADIN RELATION TO SPEED AND/OR LOAD CONDITIONS ON THE ENGINE BY ALTERNING THE LINE OF SIGHT BETWEEN THE RADIATION SOURCE AND THE RADIATION SENSITIVE ELEMENT IN RELATION TO A DEVICE WHICH INTERRUPTS THE RADIATION IN TIMED RELATION TO THE ENGINE REVOLUTIONS.
Inventors
- 👤 Eric Harold Ford
Bibliographic Details
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |