US3587552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic advance electronic ignition device for internal combustion engines
Assignee: Compteurs Schlumberger SA
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Filing: 1968-11-29
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Granted: 1971-06-28
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Expires: 1988-11-29
Abstract
Abstract THE ELECTRONIC AUTOMATIC IGNITION ADVANCE ADJUSTMENT DEVICE FOR INTERNAL COMBUSITION ENGINE COMPRISES CONDUCTOR ELEMENTS SPACED OUT AND MOVED BY SAID ENGINE DEPENDING ON ITS ROTATIONS PEED, AN ELECTROMAGNETIC PROBE P DETECTING THE PASSAGE OF SAID CONDUCTOR ELEMENTS, AN OSCILLATING ASSEMBLY CONNECTED TO SAID PROBE, AN IGNITION COIL CONNECTED, ON THE ONE HAD, TO AT LEAST ONE SPARK PLUG OF SAID ENGINE AND TO SAID OSCILLATING ASSEMBLY, AND MEANS FOR MODIFYING THE TIME FOR SETTING UP THE STABLE OSCILLATORY RATING OF SAID OSCILLATING ASSEMBLY IN AGREEMENT WITH THE SPEED OF THE ENGINE.
Inventors
- 👤 Bernard Varaut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:59
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/06; F02P7/067; F02P5/00; F02P5/04; F02P5/145; F02P5/155; F02P5/1551; F02P5/1553; F02P5/1555; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
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 |