US4938200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition device
Assignee: Aisin Corp
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Filing: 1988-12-27
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Granted: 1990-07-03
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Expires: 2008-12-27
Abstract
Abstract An ignition device for an internal combustion engine comprising an electromagnetic energy accumulator, a power source for supplying electromagnetic energy to the electromagnetic energy accumulator increasing an electromgnetic supplying line, a switching device responsive to rotation of the engine for controlling the supply of energy from the power source to the accumulator, a transformer having a primary winding connected to the accumulator, and a secondary winding for inducing a flow of electromagnetic energy in the secondary winding in response to the flow of electromagnetic energy in the primary winding, a rectifier for controlling the direction of flow of the electromagnetic energy in the primary winding and a spark generator connected to the secondary winding of the transformer for generating an electric spark in response to the energy flowing in the secondary winding.
Inventors
- 👤 Shinichiro Iwasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:15
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/02; F02P7/03; F02P7/035; F02P15/00; F02P15/10; F02P3/00; F02P3/005; F02P9/00; F02P9/002
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
247 words
An ignition device for an internal combustion engine comprising: electromagnetic energy accumulating means; energy supplying means for supplying electromagnetic energy to the electromagnetic energy accumulating means; switching means responsive to rotation of the engine for controlling the supply of energy from the supplying means to the accumulating means; transformer means having a primary winding connected to the accumulating means, and a secondary winding for including a flow of electromagnetic energy in the secondary winding in response to the flow of electromagnetic energy in the primary winding; rectifier means for controlling the direction of flow of the electromagnetic energy in the primary winding; and spark generating means connected to the secondary winding of the transformer means for generating an electric spark in response to the energy flowing in the secondary winding; wherein the accumulating means includes an accumulation transformer having a coupled coil and means for electrically connecting the coupled coil with the primary winding, said coupled coil and said primary winding each being connected to ground and said rectifier means including a rectifier connected in series between the primary winding and ground; wherein the transformer means includes a plurality of transformers, the spark generating means includes a corresponding plurality of spark generators, and the rectifier means includes an individual rectifier comprised of a thyristor corresponding to each transformer; and wherein said device also includes logic means connected to the switching means for controlling the operation of the individual thyristors in response to the rotation of the engine.
Claim 2
Dependent Claim
247 words
An ignition device for an internal combustion engine comprising: electromagnetic energy accumulating means; energy supplying means for supplying electromagnetic energy to the electromagnetic energy accumulating means; switching means responsive to rotation of the engine for controlling the supply of energy from the supplying means to the accumulating means; transformer means having a primary winding connected to the accumulating means, and a secondary winding for including a flow of electromagnetic energy in the secondary winding in response to the flow of electromagnetic energy in the primary winding; rectifier means for controlling the direction of flow of the electromagnetic energy in the primary winding; and spark generating means connected to the secondary winding of the transformer means for generating an electric spark in response to the energy flowing in the secondary winding; wherein the accumulating means includes an accumulation transformer having a coupled coil and means for electrically connecting the coupled coil with the primary winding, said coupled coil and said primary winding each being connected to ground and said rectifier means including a rectifier connected in series between the primary winding and ground; wherein the transformer means includes a plurality of transformers, the spark generating means includes a corresponding plurality of spark generators, and the rectifier means includes an individual rectifier comprised of a thyristor corresponding to each transformer; and wherein said device also includes logic means connected to the switching means for controlling the operation of the individual thyristors in response to the rotation of the engine.
Claim 3
Dependent Claim
45 words
The device of claim 1 wherein the accumulating means includes a coil and means for connecting the coil in parallel with the primary winding and the rectifier means including a rectifier coupled in series to the connecting means between the coil and the primary winding.
Claim 4
Dependent Claim
27 words
The device of claim 1 wherein the rectifier means includes a rectifier electrically connected in series to the connecting means between the coupled coil and primary winding.
Claim 5
Dependent Claim
38 words
The device of claim 1 wherein the switching means includes transistor means for intermittently supplying energy from the supplying means, and switching driver means responsive to rotation of the engine for controlling the timing of the transistor means.
Claim 6
Dependent Claim
22 words
The device of claim 1 wherein the supplying means includes booster means for increasing the voltage level of the supplied electromagnetic energy.
Claim 7
Dependent Claim
19 words
The device of claim 1 wherein the rectifier means includes one of a diode, a thyristor and a transistor.
Claim 8
Dependent Claim
31 words
The device of claim 1 wherein the spark generating means includes a plurality of spark generators and the device also includes distributor means for controlling the timing of the spark generators.
Claim 9
Dependent Claim
17 words
The device of claim 1 wherein the logic means includes an AND gate corresponding to each thyristor.
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) | 1993-07-02 | 1994-01-01 | 1994-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-02 | 1998-01-01 | 1998-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-02 | 2002-01-01 | 2002-07-03 | $7700.00 | Window Closed / Lapsed |