US3558251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High tension igniter plugs
Assignee: Safran Aircraft Engines SAS
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Filing: 1969-02-24
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Granted: 1971-01-26
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Expires: 1989-02-24
Abstract
Abstract AN IGNITER PLUG COMPRISING INNER AND OUTER ELECTRODES DEFINING THEREBETWEEN AN ANNULAR PASSAGE ENDING IN AN ANNULAR GAP FOR DEVELOPMENT OF IGNITION SPARKS. A GAS IS FED TO THE PASSAGE FOR EMERGENCE THROUGH THE GAP. A WHIRLING MOTION IS IMPARTED TO THE GAS IN THE PASSAGE TO GIVE THE SPARKS A LIKE WHIRLING MOVEMENT. ALTERNATIVELY OR ADDITIONALLY, THE OPERATIVE END PORTION OF THE INNER ELECTRODE FORMS ARE OUTWARDLY FLARING DEFLECTOR FOR THE FLOW OF GAS TO PROMOTE THE FORMATION OF AN IGNITION FLAME.
Inventors
- 👤 Louis Jules Bauger
- 👤 Roland Robert Charles Beyler
- 👤 Adolphe Robert Lefebvre
- 👤 Herve Alain Quillevere
- 👤 Michel Bernard Schenher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:35
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/26; F02C7/264; F02C7/266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |