US3566188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triggered ignition system
Assignee: Brunswick Corp
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Filing: 1968-10-31
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Granted: 1971-02-23
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Expires: 1988-10-31
Abstract
Abstract This disclosure relates to an alternator-driven capacitor system for a two-cylinder engine. A main capacitor is connected across the output of the alternator. Separate discharge circuits for each of the spark plugs are connected in parallel to the capacitor and each includes a silicon-controlled rectifier and a pulse transformer. A trigger capacitor in series with a resistor is connected across the main capacitor. Paralleled trigger circuits are connected to the trigger capacitor and each includes a pulse transformer in series with a silicon-controlled rectifier. The pulse transformers are connected to fire a corresponding main-controlled rectifier. The controlled rectifiers of the trigger circuits are fired from a separate pulse generator driven in synchronism with the engine.
Inventors
- 👤 Floyd M Minks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:18
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/02; F02P7/03; F02P7/035
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
258 words
A capacitor discharge ignition system, a first main firing capacitor, a first main controlled rectifier connected in series with the firing capacitor and defining a first discharge circuit to discharge said main firing capacitor, a second discharge circuit connected in parallel with the first discharge circuit to the main firing capacitor, said second discharge circuit to the main firing capacitor, said second discharge including a second main controlled rectifier means, a trigger capacitor, an isolating resistor connected in series with said trigger capacitor and in parallel with said main firing capacitor, an alternator connected to simultaneously charge said main firing capacitor and said trigger capacitor, a flywheel connected to said alternator, a pulse-forming circuit including a first pulse transformer in series with a triggering controlled rectifier connected across said trigger capacitor, said pulse transformer having a secondary winding connected to said first main controlled rectifier, said pulse-forming circuit including a second pulse transformer in series with a second triggering control rectifier, said second pulsing circuits connected to actuate the second main controlled rectifier, a pulse-generating means including means rotating in synchronism with said flywheel and including coil means for producing time-spaced pulses in accordance with each revolution of said flywheel, each pulse being an alternating current signal and having a sharp leading edge, means connecting said coil means to both said triggering controlled rectifier to periodically discharge said trigger capacitor, and said pulse-generating means establishing timespaced alternating current signals and connected to both of said triggering control rectifiers for cyclically actuating said first and second triggering controlled rectifiers.
Claim 2
Dependent Claim
258 words
A capacitor discharge ignition system, a first main firing capacitor, a first main controlled rectifier connected in series with the firing capacitor and defining a first discharge circuit to discharge said main firing capacitor, a second discharge circuit connected in parallel with the first discharge circuit to the main firing capacitor, said second discharge circuit to the main firing capacitor, said second discharge including a second main controlled rectifier means, a trigger capacitor, an isolating resistor connected in series with said trigger capacitor and in parallel with said main firing capacitor, an alternator connected to simultaneously charge said main firing capacitor and said trigger capacitor, a flywheel connected to said alternator, a pulse-forming circuit including a first pulse transformer in series with a triggering controlled rectifier connected across said trigger capacitor, said pulse transformer having a secondary winding connected to said first main controlled rectifier, said pulse-forming circuit including a second pulse transformer in series with a second triggering control rectifier, said second pulsing circuits connected to actuate the second main controlled rectifier, a pulse-generating means including means rotating in synchronism with said flywheel and including coil means for producing time-spaced pulses in accordance with each revolution of said flywheel, each pulse being an alternating current signal and having a sharp leading edge, means connecting said coil means to both said triggering controlled rectifier to periodically discharge said trigger capacitor, and said pulse-generating means establishing timespaced alternating current signals and connected to both of said triggering control rectifiers for cyclically actuating said first and second triggering controlled rectifiers.
Claim 3
Dependent Claim
36 words
The ignition system of claim 1 having a voltage-sensitive means connected directly in parallel with said capacitor in series with the gated control switch and polarized to bypass reverse polarity voltages applied to said trigger capacitor.
Claim 4
Dependent Claim
16 words
The ignition system of claim 1 wherein said voltage sensitive meaNs is a Zener diode means.
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |