Patent US3779226A successfully refreshed from Google Patents.
US3779226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency continuous wave ignition system
Assignee: Texaco Inc
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Filing: 1972-03-06
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Granted: 1973-12-18
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Expires: 1992-03-06
Abstract
Abstract An ignition system employing continuous-wave high-frequency spark energy, makes use of a special ignition-switch circuit. The special circuit switches only control winding current of an oscillator that supplies the spark energy. Consequently, high current oscillator energy may be directly and permanently connected.
Inventors
- 👤 R Canup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:04
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/01; F02P3/02; F02P3/04; F02P3/0407; F02P3/0421
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
In a high-frequency continuous-wave ignition system for an internal combustion engine, said system including an oscillator for supplying continuous-wave controlled-duration spark energy, said oscillator having a power supply and a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, means controlled by said engine for cutting off and supplying a DC bias current to said control winding, and an ignition switch for controlling energization of said ignition system including said DC bias current circuit, the improvement comprising circuit means including a permanent direct connection for energizing said oscillator without passing through said ignition switch.
Claim 2
Dependent Claim
102 words
In a high-frequency continuous-wave ignition system for an internal combustion engine, said system including an oscillator for supplying continuous-wave controlled-duration spark energy, said oscillator having a power supply and a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, means controlled by said engine for cutting off and supplying a DC bias current to said control winding, and an ignition switch for controlling energization of said ignition system including said DC bias current circuit, the improvement comprising circuit means including a permanent direct connection for energizing said oscillator without passing through said ignition switch.
Claim 3
Dependent Claim
23 words
The invention according to claim 1, further comprising means for grounding both sides of said control winding when said ignition switch is off.
Claim 4
Dependent Claim
36 words
The invention according to claim 2, wherein said ignition switch comprises a pair of ganged poles, and a pair of off position contacts, and wherein said grounding means comprises circuit connections from said contacts to ground.
Claim 5
Dependent Claim
135 words
In a high-frequency continuous-wave ignition system for an internal combustion engine, said system including an oscillator for supplying continuous-wave controlled-duration spark energy, said oscillator having a power supply and a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, means controLled by said engine for cutting off and supplying a DC bias current to said control winding, and an ignition switch having a pair of ganged poles plus a pair of off-position contacts for controlling energization of said ignition system including said DC bias current circuit, the improvement comprising a permanent direct connection for energizing said oscillator without passing through said ignition switch, first circuit connections from the ends of said control winding to said ganged poles, and second circuit connections from said off-position contacts to ground.
Claim 6
Dependent Claim
135 words
In a high-frequency continuous-wave ignition system for an internal combustion engine, said system including an oscillator for supplying continuous-wave controlled-duration spark energy, said oscillator having a power supply and a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, means controLled by said engine for cutting off and supplying a DC bias current to said control winding, and an ignition switch having a pair of ganged poles plus a pair of off-position contacts for controlling energization of said ignition system including said DC bias current circuit, the improvement comprising a permanent direct connection for energizing said oscillator without passing through said ignition switch, first circuit connections from the ends of said control winding to said ganged poles, and second circuit connections from said off-position contacts to ground.
Claim 7
Dependent Claim
94 words
A high-frequency continuous-wave ignition for an internal combustion engine, comprising in combination an oscillator having a power supply and a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, means controlled by said engine for cutting off and applying a DC bias current to said control winding, an ignition switch for controlling energization of said ignition system including a DC bias current circuit but excluding said power supply, and circuit means including a permanent direct connection for energizing said oscillator without passing through said ignition switch.
Claim 8
Dependent Claim
94 words
A high-frequency continuous-wave ignition for an internal combustion engine, comprising in combination an oscillator having a power supply and a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, means controlled by said engine for cutting off and applying a DC bias current to said control winding, an ignition switch for controlling energization of said ignition system including a DC bias current circuit but excluding said power supply, and circuit means including a permanent direct connection for energizing said oscillator without passing through said ignition switch.
Claim 9
Dependent Claim
23 words
A combination according to claim 5, further comprising means for grounding both sides of said control winding when said ignition switch is off.
Claim 10
Dependent Claim
36 words
A combination according to claim 6, wherein said ignition switch comprises a pair of ganged poles, and a pair of off position contacts, and wherein said grounding means comprises circuit connections from said contacts to ground.
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |