US3087094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightning arrester
Assignee: McGraw Edison Co
•
Filing: 1956-07-13
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Granted: 1963-04-23
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Expires: 1976-07-13
Abstract
No abstract record available.
Inventors
- 👤 William H Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:16
CPC Classifications
H; H01; H01T; H01T4/00; H01T4/16; H01T4/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A LIGHTNING ARRESTER, A SPARK GAP ASSEMBLY COMPRISING A PLURALITY OF SPACED ELECTRODE PLATES DEFINING OPPOSED SPARK GAP SURFACES, A PLURALITY OF UNIFORM IN SIZE INSULATING ELECTRODE SPACING MEMBERS BEING RECEIVED AND RETAINED BETWEEN EACH OF SAID ELECTRODE PLATES AND PROVIDING A MEANS OF ESTABLISHING SAID PREDETERMINED GAP SPACING BETWEEN SAID SPARK GAP SURFACES, SAID SUPPORT MEMBERS EACH BEING OF AN INSULATING MATERIAL HAVING A PREDETERMINED DIELECTRIC CONSTANT AND BEING POSITIONED RELATIVE TO ONE ANOTHER IN SAID STACKED RELATIONSHIP TO PROVIDE A GRADUAL VARIATION IN DIELECTRIC VALUES IN THOSE MEMBERS POSITIONED REMOTELY RELATIVE TO ONE END OF SAID
Claim 2
Dependent Claim
99 words
IN A LIGHTNING ARRESTER, A SPARK GAP ASSEMBLY COMPRISING A PLURALITY OF SPACED ELECTRODE PLATES DEFINING OPPOSED SPARK GAP SURFACES, A PLURALITY OF UNIFORM IN SIZE INSULATING ELECTRODE SPACING MEMBERS BEING RECEIVED AND RETAINED BETWEEN EACH OF SAID ELECTRODE PLATES AND PROVIDING A MEANS OF ESTABLISHING SAID PREDETERMINED GAP SPACING BETWEEN SAID SPARK GAP SURFACES, SAID SUPPORT MEMBERS EACH BEING OF AN INSULATING MATERIAL HAVING A PREDETERMINED DIELECTRIC CONSTANT AND BEING POSITIONED RELATIVE TO ONE ANOTHER IN SAID STACKED RELATIONSHIP TO PROVIDE A GRADUAL VARIATION IN DIELECTRIC VALUES IN THOSE MEMBERS POSITIONED REMOTELY RELATIVE TO ONE END OF SAID
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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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |