Patent US4292569A successfully refreshed from Google Patents.
US4292569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High energy modulation ignition system
Assignee: Individual
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Filing: 1979-06-07
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Granted: 1981-09-29
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Expires: 1999-06-07
Abstract
Abstract An ignition system uses a transformer with a primary winding and a secondary winding wherein the secondary winding is intermittently coupled to at least one igniter load. An electronic switch is connected to the primary winding. Such electronic switch has an input circuit and an output circuit for enabling electrical energy to be stored in the primary winding. The electronic switch may have an additional switching stage feeding its input circuit for establishing the charging period of the primary winding consistent with the logic of a conventional ignition system. A timer is electrically coupled to the additional switching stage for intermittently activating such electronic switch. An alternating current modulator is connected to the primary winding so as to provide a modulating signal during the discharge period of the system thereby modulating the discharge current of the primary winding. Protective devices may be connected between the input and output circuits of the electronic switch so as to protect such switch against high transient surges. A capacitor may be connected to the secondary winding of the ignition transformer.
Inventors
- 👤 Martin E. Gerry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:42
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/01; F02P3/02; F02P3/04; F02P3/0407; F02P3/0435; F02P9/00; F02P9/002; F02P9/007; H; H04; H04N; H04N3/00; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
150 words
An ignition system for a fuel burning engine including a timer for effecting first and second states of operation of said system, comprising the combination of: alternating current modulation means having an output transformer with an output winding for providing alternating current from said output winding during the second state; an ignition transformer with a single primary winding coupled in series to said output winding during the second state; and electronic logic means, connected to said primary winding and controlled by said timer and coupled to said output winding, for enabling charging current to flow in the primary winding during the first state, for inhibiting said charging current and alternating current from flowing in said output winding during the first state, and for enabling said alternating current to flow in said output winding and primary winding so as to modulate discharge current of the primary winding during said second state.
Claim 2
Dependent Claim
150 words
An ignition system for a fuel burning engine including a timer for effecting first and second states of operation of said system, comprising the combination of: alternating current modulation means having an output transformer with an output winding for providing alternating current from said output winding during the second state; an ignition transformer with a single primary winding coupled in series to said output winding during the second state; and electronic logic means, connected to said primary winding and controlled by said timer and coupled to said output winding, for enabling charging current to flow in the primary winding during the first state, for inhibiting said charging current and alternating current from flowing in said output winding during the first state, and for enabling said alternating current to flow in said output winding and primary winding so as to modulate discharge current of the primary winding during said second state.
Claim 3
Dependent Claim
36 words
The system as stated in claim 1, wherein said logic means includes an electronic switch connected to the output winding, said electronic switch providing an electrical bypass path across the output winding during the first state.
Claim 4
Dependent Claim
28 words
The system as stated in claim 1, wherein said ignition transformer has a secondary winding coupled to the primary winding, and a capacitor connected to the secondary winding.
Claim 5
Dependent Claim
16 words
The system as stated in claim 1, wherein said timer is a magnetically generating pulse type.
Claim 6
Dependent Claim
16 words
The system as stated in claim 1, wherein said timer is a cam-actuated pair of contactors.
Claim 7
Dependent Claim
46 words
The system as stated in claim 1, wherein said timer includes an electrically conductive disk having a plural number of electrically insulative members regularly spaced about the periphery of the disk and within the confines of said disk, and a contactor in cooperation with said periphery.
Claim 8
Dependent Claim
16 words
The system as stated in claim 1, wherein said timer is an optically generating pulse type.
Claim 9
Dependent Claim
163 words
An ignition system for a fuel burning engine including a timer for effecting first and second states of operation of said system, comprising the combination of: Alternating current modulation means having an output transformer with an output winding for providing alternating current from said output winding during the second state; a capacitor connected to said output winding and forming a series circuit therewith; an ignition transformer with a single primary winding coupled in series to said series circuit during the second state; and electronic logic means, connected to said primary winding and controlled by said timer and coupled to said series circuit, for enabling charging current to flow in the primary winding during the first state, for inhibiting said charging current and alternating current from flowing in said series circuit during the first state, and for enabling said alternating current to flow in said series circuit and primary winding so as to modulate discharge current of the primary winding during said second state.
Claim 10
Dependent Claim
163 words
An ignition system for a fuel burning engine including a timer for effecting first and second states of operation of said system, comprising the combination of: Alternating current modulation means having an output transformer with an output winding for providing alternating current from said output winding during the second state; a capacitor connected to said output winding and forming a series circuit therewith; an ignition transformer with a single primary winding coupled in series to said series circuit during the second state; and electronic logic means, connected to said primary winding and controlled by said timer and coupled to said series circuit, for enabling charging current to flow in the primary winding during the first state, for inhibiting said charging current and alternating current from flowing in said series circuit during the first state, and for enabling said alternating current to flow in said series circuit and primary winding so as to modulate discharge current of the primary winding during said second state.
Claim 11
Dependent Claim
36 words
The system as stated in claim 8, wherein said logic means includes an electronic switch connected to said series circuit, said electronic switch providing an electrical bypass path across the series circuit during the first state.
Claim 12
Dependent Claim
28 words
The system as stated in claim 8, wherein said ignition transformer has a secondary winding coupled to the primary winding, and a capacitor connected to the secondary winding.
Claim 13
Dependent Claim
16 words
The system as stated in claim 8, wherein said timer is a magnetically generating pulse type.
Claim 14
Dependent Claim
16 words
The system as stated in claim 8, wherein said timer is a cam-actuated pair of contactors.
Claim 15
Dependent Claim
46 words
The system as stated in claim 8, wherein said timer includes an electrically conductive disk having a plural number of electrically insulative members regularly spaced about the periphery of the disk and within the confines of said disk, and a contactor in cooperation with said periphery.
Claim 16
Dependent Claim
16 words
The system as stated in claim 8, wherein said timer is an optically generating pulse type.
Claim 17
Independent Claim
106 words
A method of igniting fuel in a fuel burning engine, comprising in combination the steps of: charging a primary winding of an ignition transformer while creating an electrical bypass path by means of an electronic logic circuit across a capacitor and an output winding of an output transformer of a modulator, wherein said output winding and said capacitator are series coupled to said primary winding; creating a discharge current flow in said primary winding by means of said electronic logic circuit, capacitor and output winding, and modulating said discharge current with alternating current fed by the output winding; and generating an electrical arc across igniter electrodes.
Claim 18
Independent Claim
106 words
A method of igniting fuel in a fuel burning engine, comprising in combination the steps of: charging a primary winding of an ignition transformer while creating an electrical bypass path by means of an electronic logic circuit across a capacitor and an output winding of an output transformer of a modulator, wherein said output winding and said capacitator are series coupled to said primary winding; creating a discharge current flow in said primary winding by means of said electronic logic circuit, capacitor and output winding, and modulating said discharge current with alternating current fed by the output winding; and generating an electrical arc across igniter electrodes.
Claim 19
Dependent Claim
21 words
The method as stated in claim 15, wherein said electrical arc has a maximum length of 350 thousandths of an inch.
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) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |