US3353052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark plug having an auxiliary series spark gap in parallel with the main spark gap
Assignee: Individual
•
Filing: 1964-07-15
•
Granted: 1967-11-14
•
Expires: 1984-07-15
Abstract
No abstract record available.
Inventors
- 👤 George H Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:17
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/20; H01T13/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A SPARK PLUG WHICH COMPRISES A FIRST ELECTRODE ADAPTED FOR CONNECTION TO GROUND, A SECOND ELECTRODE ADAPTED FOR CONNECTION TO AN IGNITION COIL AND SPACED A PREDETERMINED DISTANCE FROM SAID FIRST ELECTRODE TO FORM A FIRST FIRING GAP, A THIRD ELECTRODE SPACED FROM SAID FIRST ELECTRODE A LESSER DISTANCE THAN SAID SECOND ELECTRODE TO FORM A SECOND SHORTER FIRING GAP, AND MEANS INCLUDING AN AUXILIARY GAP FOR ELECTRICALLY CONNECTING SAID THIRD ELECTRODE TO SAID SECOND ELECTRODE.
Claim 2
Dependent Claim
76 words
A SPARK PLUG WHICH COMPRISES A FIRST ELECTRODE ADAPTED FOR CONNECTION TO GROUND, A SECOND ELECTRODE ADAPTED FOR CONNECTION TO AN IGNITION COIL AND SPACED A PREDETERMINED DISTANCE FROM SAID FIRST ELECTRODE TO FORM A FIRST FIRING GAP, A THIRD ELECTRODE SPACED FROM SAID FIRST ELECTRODE A LESSER DISTANCE THAN SAID SECOND ELECTRODE TO FORM A SECOND SHORTER FIRING GAP, AND MEANS INCLUDING AN AUXILIARY GAP FOR ELECTRICALLY CONNECTING SAID THIRD ELECTRODE TO SAID SECOND ELECTRODE.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |