US4216756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulated magneto powered capacitive discharge ignition system
Assignee: Outboard Marine Corp
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Filing: 1978-07-17
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Granted: 1980-08-12
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Expires: 1998-07-17
Abstract
Abstract Disclosed herein is a voltage regulated magneto powered capacitive discharge ignition system including a charge capacitor having opposite plates, a magneto including a charge coil having opposite end terminals, and a circuit including a full-wave bridge rectifier having input terminals respectively connected to the end terminals of the charge coil, and having output terminals respectively connected to the plates of the charge capacitor for insuring unidirectional current flow from the charge coil to the charge capacitor. The system also includes a voltage regulator including a triac having a gate, and having first and second anodes respectively connected to the end terminals of the charge coil, and also including a varistor having one terminal connected to one of the end terminals of the charge coil, and having another terminal connected to the triac gate. The varistor is rendered conductive and applies a trigger current pulse to the triac gate in response to voltage developed on the charge capacitor exceeding a predetermined value, whereby the triac is rendered conductive so that the charge coil is shunted by the triac and further charging of the charge capacitor is prevented.
Inventors
- 👤 Richard J. Mura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:18
CPC Classifications
F; F02; F02P; F02P1/00; F02P1/08; F02P1/086
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
301 words
A voltage regulated magneto powered capacitive discharge ignition system comprising a charge capacitor having opposite plates, a magneto including a charge coil having opposite end terminals, circuit means for respectively connecting said opposite plates of said charge capacitor to said end terminals of said charge coil and including rectifier means for insuring unidirectional current flow from said charge coil to said charge capacitor, said rectifier means comprising a full-wave bridge rectifier having input terminals respectively connected to said end terminals of said charge coil, and output terminals respectively connected to said plates of said charge capacitor, and voltage regulator means including three-terminal, bidirectional semiconductor switching means having first, second, and third terminals, said first and second terminals being respectively connected to said end terminals of said charge coil and to said input terminals of said full-wave bridge rectifier, said switching means being rendered conductive between said first and second terminals in response to a current trigger pulse applied to said third terminal and thereby shunting said charge coil, said voltage regulator means also including two-terminal, bidirectional semiconductor trigger means having one terminal connected to said third terminal of said switching means and having another terminal connected to one of said end terminals of said charge coil and one of said input terminals of said full-wave bridge rectifier, whereby said switching means and said two-terminal bidirectional trigger means are isolated by said full-wave bridge rectifier from current surges which result during discharge of said charge capacitor, said trigger means being rendered conductive and applying a current trigger pulse to said third terminal of said switching means in response to voltage developed on said charge capacitor exceeding a predetermined value, whereby said switching means is rendered conductive so that said charge coil is shunted and further charging of said charge capacitor is prevented.
Claim 2
Dependent Claim
301 words
A voltage regulated magneto powered capacitive discharge ignition system comprising a charge capacitor having opposite plates, a magneto including a charge coil having opposite end terminals, circuit means for respectively connecting said opposite plates of said charge capacitor to said end terminals of said charge coil and including rectifier means for insuring unidirectional current flow from said charge coil to said charge capacitor, said rectifier means comprising a full-wave bridge rectifier having input terminals respectively connected to said end terminals of said charge coil, and output terminals respectively connected to said plates of said charge capacitor, and voltage regulator means including three-terminal, bidirectional semiconductor switching means having first, second, and third terminals, said first and second terminals being respectively connected to said end terminals of said charge coil and to said input terminals of said full-wave bridge rectifier, said switching means being rendered conductive between said first and second terminals in response to a current trigger pulse applied to said third terminal and thereby shunting said charge coil, said voltage regulator means also including two-terminal, bidirectional semiconductor trigger means having one terminal connected to said third terminal of said switching means and having another terminal connected to one of said end terminals of said charge coil and one of said input terminals of said full-wave bridge rectifier, whereby said switching means and said two-terminal bidirectional trigger means are isolated by said full-wave bridge rectifier from current surges which result during discharge of said charge capacitor, said trigger means being rendered conductive and applying a current trigger pulse to said third terminal of said switching means in response to voltage developed on said charge capacitor exceeding a predetermined value, whereby said switching means is rendered conductive so that said charge coil is shunted and further charging of said charge capacitor is prevented.
Claim 3
Dependent Claim
52 words
A voltage regulated magneto powered capacitive discharge ignition system in accordance with claim 1 wherein said three-terminal, bidirectional switching means comprises a triac including first and second anodes which respectively comprise said first and second terminals of said switching means, and including a gate which comprises said third-terminal of said switching means.
Claim 4
Dependent Claim
23 words
A voltage regulated magneto powered capacitive discharge ignition system in accordance with claim 1 wherein said two-terminal, bidirectional triggering means comprises a varistor.
Claim 5
Dependent Claim
62 words
A voltage regulated magneto capacitive discharge ignition system in accordance with claim 1 wherein said three-terminal, bidirection switching means comprises a triac including first and second anodes which respectively comprise said first and second terminals of said switching means, and including a gate which comprises said third terminal of said switching means, and wherein said two-terminal, bidirectional triggering means comprises a varistor.
Claim 6
Dependent Claim
234 words
A voltage regulated magneto powered capacitive discharge ignition system comprising a charge capacitor having opposite plates, a magneto including a charge coil having opposite end terminals, circuit means including a full-wave bridge rectifier having input terminals respectively connected to said end terminals of said charge coil, and having output terminals respectively connected to said plates of said charge capacitor for insuring unidirectional current flow from said charge coil to said charge capacitor, and voltage regulator means including a triac having a gate, and having first and second anodes respectively connected to said end terminals of said charge coil and to said input terminals of said full-wave bridge rectifier, and also including a varistor having one terminal connected to one of said end terminals of said charge coil and one of said input terminals of said bridge rectifier, and having another terminal connected to said triac gate, said connection of said triac and said varistor to said full-wave bridge rectifier input terminals resulting in said triac and said varistor being isolated from current surges which result during discharge of said charge capacitor, said varistor being rendered conductive and applying a trigger current pulse to said triac gate in response to voltage developed on said charge capacitor exceeding a predetermined value, whereby said triac is rendered conductive so that said charge coil is shunted by said triac and further charging of said charge capacitor is prevented.
Claim 7
Dependent Claim
234 words
A voltage regulated magneto powered capacitive discharge ignition system comprising a charge capacitor having opposite plates, a magneto including a charge coil having opposite end terminals, circuit means including a full-wave bridge rectifier having input terminals respectively connected to said end terminals of said charge coil, and having output terminals respectively connected to said plates of said charge capacitor for insuring unidirectional current flow from said charge coil to said charge capacitor, and voltage regulator means including a triac having a gate, and having first and second anodes respectively connected to said end terminals of said charge coil and to said input terminals of said full-wave bridge rectifier, and also including a varistor having one terminal connected to one of said end terminals of said charge coil and one of said input terminals of said bridge rectifier, and having another terminal connected to said triac gate, said connection of said triac and said varistor to said full-wave bridge rectifier input terminals resulting in said triac and said varistor being isolated from current surges which result during discharge of said charge capacitor, said varistor being rendered conductive and applying a trigger current pulse to said triac gate in response to voltage developed on said charge capacitor exceeding a predetermined value, whereby said triac is rendered conductive so that said charge coil is shunted by said triac and further charging of said charge capacitor is prevented.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-12 | 1984-02-11 | 1984-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-12 | 1988-02-11 | 1988-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-12 | 1992-02-11 | 1992-08-12 | $7700.00 | Window Closed / Lapsed |