US3175123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillator ignition system
Assignee: Eltra Corp
•
Filing: 1960-12-08
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Granted: 1965-03-23
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Expires: 1980-12-08
Abstract
No abstract record available.
Inventors
- 👤 Le Roy E Dilger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:34
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/538; H02M7/5381; F; F02; F02P; F02P3/00; F02P3/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A SIMPLIFIER IGNITION SYSTEM FOR INTERNAL COMBUSTION ENGINES UTILIZING SPARK PLUGS AND ADAPTED TO SUPPLY METERED CONSTANT ENERGY TO THE PLUGS AT LOW AND HIGH ENGINE SPEEDS COMPRISING: A FIRST CIRCUIT HAVING A TRANSISTORIZED BLOCKING OSCILLATOR, A UNIDIRECTIONAL VOLTAGE POWER SUPPLY, AND MEANS FOR PERIODICALLY SHUNTING SAID OSCILLATOOR IN TIMED RELATION TO ENGINE SPEEDS;
References Cited (Backward Citations)
US2169818A
Cited
US2433650A
Cited
US2638543A
Cited
US2562450A
Cited
US2976461A
Cited
US2981865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |