Patent US3124718A successfully refreshed from Google Patents.
US3124718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination spark
Assignee: Globe Union Inc
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:28
CPC Classifications
H; H04; H04B; H04B15/00; H04B15/02; H04B15/025; H01; H01T; H01T13/00; H01T13/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A SPARK PLUG OF SUBSTANTIALLY CONVENTIONAL SIZE AND SHAPE, A UNITARY CENTER ELECTRODE ASSEMBLY COMPRISING, AN INSULATOR HAVING A BORE, A CENTER ELECTRODE MOUNTED IN SAID BORE AND PROJECTING FROM ONE END OF SAID INSULATOR, A TERMINAL ON THE OTHER END OF SAID INSULATOR, A CAPACITIVE ELECTRICAL CURRENT LIMITING ELEMENT INCORPORATED WITHIN SAID INSULATOR AND CONNECTED IN SERIES BETWEEN SAID CENTER ELECTRODE AND SAID TERMINAL, SAID CURRENT LIMITING ELEMENT INCLUDING A METALLIZED COATING ON A PORTION OF THE OUTER SURFACE OF THE INSULATOR AND A METALIZED COATING ON A PORTION OF THE INNER SURFACE OF SAID INSULATOR, SAID OUTER SURFACE METALIZED COATING BEING CONNECTED TO SAID TERMINAL, AND SAID INNER SURFACE METALIZED COATING BEING CONNECTED TO SAID CENTER ELECTRODE, WHEREBY A PORTION OF THE INSULATOR ITSELF FORMS THE CAPACITOR DIELECTRIC.
Claim 2
Dependent Claim
131 words
IN A SPARK PLUG OF SUBSTANTIALLY CONVENTIONAL SIZE AND SHAPE, A UNITARY CENTER ELECTRODE ASSEMBLY COMPRISING, AN INSULATOR HAVING A BORE, A CENTER ELECTRODE MOUNTED IN SAID BORE AND PROJECTING FROM ONE END OF SAID INSULATOR, A TERMINAL ON THE OTHER END OF SAID INSULATOR, A CAPACITIVE ELECTRICAL CURRENT LIMITING ELEMENT INCORPORATED WITHIN SAID INSULATOR AND CONNECTED IN SERIES BETWEEN SAID CENTER ELECTRODE AND SAID TERMINAL, SAID CURRENT LIMITING ELEMENT INCLUDING A METALLIZED COATING ON A PORTION OF THE OUTER SURFACE OF THE INSULATOR AND A METALIZED COATING ON A PORTION OF THE INNER SURFACE OF SAID INSULATOR, SAID OUTER SURFACE METALIZED COATING BEING CONNECTED TO SAID TERMINAL, AND SAID INNER SURFACE METALIZED COATING BEING CONNECTED TO SAID CENTER ELECTRODE, WHEREBY A PORTION OF THE INSULATOR ITSELF FORMS THE CAPACITOR DIELECTRIC.
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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |