Surge protector
Abstract
Abstract A MINIATURE SURGE PROTECTOR INCLUDES A PAIR OF HOLLOW ELECTRODE MEMBERS EXTENDING WITHIN EITHER END OF A CERAMIC CYLINDER, SUCH ELECTRODES BEING BRAZED IN POSITION TO COMPLETE A HERMETIC ENCLOSURE WITHIN THE CERAMIC CYLINDER. THE ELECTRODES ARE PROVIDED WITH END WALLS WHICH FACE ONE ANOTHER WITHIN THE CYLINDER TO DEFINE A GAP, AND WHICH THE HOLLOW PORTION OF EACH ELECTRODE. SUCH MEANS CONTINUATION OF AN ABNORMAL ARC DISCHARGE ACROSS THE GAP. A MEANS FOR MAKING PERMANENT CONTACT BETWEEN THE ELECTRODES, PREFERABLY INCLUDING A FUSIBLE METAL, IS INCLUDED WITHIN THE HOLLOW PORTION OF EACH ELECTRODE. SUCH MEANS IS ADAPTED TO PROTRUDE THROUGH AND MADE SUBSTANTIALLY PERMANENT CONTACT WITH THE OPPOSITE ELECTRODE WHEN THE ELECTRODE END WALLS MELT, WHEREBY TO PROVIDE A FAIL-SAFE FEATURE.
Inventors
- 👤 Chester J Kawiecki
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |