Patent US3880132A successfully refreshed from Google Patents.
US3880132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state ignition system
Assignee: Lee Raymond Organization Inc
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Filing: 1973-07-26
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Granted: 1975-04-29
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Expires: 1993-07-26
Abstract
Abstract A solid state ignition system for firing, in controlled fashion, the spark plugs of an internal combustion engine. A rotating half phase alternator generates individual electrical pulses as it passes each of the several field coils in the generator. Each field coil is linked so as to simultaneously gate a silicon-controlled rectifier of a high tension voltage supply leading to the spark plugs, and to gate individual siliconcontrolled rectifiers that individually regulate the firing of each spark plug.
Inventors
- 👤 Jr Norman Whatley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:51
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/02; F02P7/03; F02P7/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
300 words
A solid state distribution system for the control of the ignition of spark plugs of an internal combustion engine, comprising an alternator which is linked by solid state diodes and silicon-controlled rectifiers to a capacitive discharge system that generates a pulse of high voltage electricity which is fed to each individual spark plug in turn, said alternator being fitted with a half-phase coil on the rotor of the alternator and with a number of individual field coils mounted on the stator of the alternator, with the number of field coils being equal to the number of spark plugs to be fired, such that rotation of the rotor of the alternator, bringing the rotor coil past a field coil, produces a pulse of electricity in the field coil, with a first lead of the two leads of the field coil being led through diodes to the input of a first silicon-controlled rectifier, and the pulse of electricity from the second lead of the individual field coils being led through diodes to the gate of the said first silicon-controlled rectifier and also led through other diodes to the gate of a second silicon-controlled rectifier in series with the spark plug to be fired, with the outut of the said first silicon-controlled rectifier led to the gate of a third silicon-controlled rectifier, the third silicon-controlled rectifier being connected to fire, in the triggered mode, the capacitative discharge system to produce a pulse of high voltage led to each of the silicon-controlled rectifiers connected individually in series with each of the spark plugs, with the said second silicon-controlled rectifier, in series with a spark plug, which is gated by the current produced from a specific field coil conducting the high tension pulse produced by the capacitative discharge system to fire the respective spark plug.
Claim 2
Dependent Claim
300 words
A solid state distribution system for the control of the ignition of spark plugs of an internal combustion engine, comprising an alternator which is linked by solid state diodes and silicon-controlled rectifiers to a capacitive discharge system that generates a pulse of high voltage electricity which is fed to each individual spark plug in turn, said alternator being fitted with a half-phase coil on the rotor of the alternator and with a number of individual field coils mounted on the stator of the alternator, with the number of field coils being equal to the number of spark plugs to be fired, such that rotation of the rotor of the alternator, bringing the rotor coil past a field coil, produces a pulse of electricity in the field coil, with a first lead of the two leads of the field coil being led through diodes to the input of a first silicon-controlled rectifier, and the pulse of electricity from the second lead of the individual field coils being led through diodes to the gate of the said first silicon-controlled rectifier and also led through other diodes to the gate of a second silicon-controlled rectifier in series with the spark plug to be fired, with the outut of the said first silicon-controlled rectifier led to the gate of a third silicon-controlled rectifier, the third silicon-controlled rectifier being connected to fire, in the triggered mode, the capacitative discharge system to produce a pulse of high voltage led to each of the silicon-controlled rectifiers connected individually in series with each of the spark plugs, with the said second silicon-controlled rectifier, in series with a spark plug, which is gated by the current produced from a specific field coil conducting the high tension pulse produced by the capacitative discharge system to fire the respective spark plug.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |