US3578981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine starter control circuits
Assignee: Automobiles Peugeot SA
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Filing: 1968-12-24
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Granted: 1971-05-18
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Expires: 1988-12-24
Abstract
Abstract A starter motor control circuit contains a relay having two windings associated in opposed relationship, the first winding being energized through the medium of the ignition key switch and the second winding from the alternator through a special group of rectifying diodes of which the number is proportional to that of the phases of said alternator and the capacity consistent with the current drawn by the winding of the starter relay supplied therethrough.
Inventors
- 👤 Claude Edmond Lombard
- 👤 Jean Henri Maurice
- 👤 Jean Piret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:05
CPC Classifications
F; F02; F02N; F02N11/00; F02N11/10; F02N11/101; F02N11/105; F02N11/08; F02N11/087; F02N11/103
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
157 words
An improvement in the control systems for starter motors of internal combustion engines in automobiles and the like, which motors have a starter switch and which engines have an ignition system, including an ignition key and an alternator, and a transmission having a gear change selector, comprising a relay having two oppositely wound windings and controlling said starter switch, switch means closed by said gear-change selector and connected to one end of each of said windings, one of said windings being connected to be energized by closure of said ignition key, a plurality of rectifying diodes proportional in number to the number of phases of the alternator and connected to energize the other winding from said alternator, the capacity of said diodes corresponding to the current absorbed by said other relay winding whereby when the engine is running both windings will be energized in opposite direction thus producing zero magnetic field and preventing energization of said relay.
Claim 2
Dependent Claim
157 words
An improvement in the control systems for starter motors of internal combustion engines in automobiles and the like, which motors have a starter switch and which engines have an ignition system, including an ignition key and an alternator, and a transmission having a gear change selector, comprising a relay having two oppositely wound windings and controlling said starter switch, switch means closed by said gear-change selector and connected to one end of each of said windings, one of said windings being connected to be energized by closure of said ignition key, a plurality of rectifying diodes proportional in number to the number of phases of the alternator and connected to energize the other winding from said alternator, the capacity of said diodes corresponding to the current absorbed by said other relay winding whereby when the engine is running both windings will be energized in opposite direction thus producing zero magnetic field and preventing energization of said relay.
Claim 3
Dependent Claim
26 words
An improvement as set forth in claim 1 wherein the starter motor control relay further comprises a time-lag device for retarding the deenergization of said relay.
References Cited (Backward Citations)
US3270208A
Cited
US3264483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |