Engine spark timing control device
Abstract
Abstract AN INTERNAL COMBUSTION ENGINE HAS A VACUUM SERVO CONNECTED TO THE DISTRIBUTOR BREAKER PLATE FOR MOVING IT AS A FUNCTION OF THE CHANGE IN CARBURETOR SPARK PORT VACUUM AS CONTROLLED BY A MECHANICAL DEVICE BETWEEN THE SERVO AND SPARK PORT HAVING SINTERED METAL FLOW RESTRICTION AND A ONE-WAY CHECK VALVE IN PARALLEL FLOW CIRCUITS, THE CHECK VALVE UNSEATING DURING RAPID VEHICLE ACCELERATIONS TO QUICKLY REDUCE THE SPARD ADVANCE SETTING TO A LOWER LEVEL, FOR BETTER PERFORMANCE, THE SINTERED METAL FLOW RESTRICTION PROVIDING A DELAYED RATE OF RETURN TO AN ADVANCED SPARK TIMING SETTING DURING RELATIVELY SLOWER ACCELERATIONS, TO MINIMIZE THE EMISSION OF UNDESIRABLE EXHAUST GAS ELEMENTS.
Inventors
- 👤 Karl H Gropp
- 👤 John A Lewis
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |