Patent US6354877B1 successfully refreshed from Google Patents.
US3178697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallel operation of high voltage indicators
Assignee: ABB Inc USA
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Filing: 1958-06-13
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Granted: 1965-04-13
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Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
- 👤 Roy H Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:03
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145; G01R19/155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN COMBINATION AN ELECTRICALLY CONDUCTIVE ENCLOSURE, A HIGH A.C. VOLTAGE CONDUCTOR POSITIONED WITHIN SAID ENCLOSURE, AN ELECTRICALLY CONDUCTING MEANS DISPOSED BETWEEN SAID CONDUCTOR AND SAID ENCLOSURE IN AN ELECTRIC FIELD ESTABLISHED WHEN CURRENT FLOWS THROUGH SAID CONDUCTOR, AND CAPACITIVELY COUPLED THERETO BE AT A POTENTIAL RELATED IN MAGNITUDE TO SAID HIGH A.C. CONDUCTOR MAGNITUDE, AN A.C. VOLTAGE INDICATING MEANS HAVING ONE END THEREOF ELECTRICALLY CONNECTED TO SAID ELECTRICALLY CONDUCTING MEANS AND HAVING THE OTHER END THEREOF ELECTRICALLY CONNECTED TO SAID ENCLOSURE; SAID INDICATING MEANS COMPRISING A PAIR OF PARALLEL CONNECTED CIRCUITS EACH INCLUDING AN INDICATOR AND A SEMI-CONDUCTOR MEANS, SAID PARALLEL CIRCUITS BEING ENERGIZABLE BY THE POTENTIAL DIFFERENCE BE-
Claim 2
Dependent Claim
109 words
IN COMBINATION AN ELECTRICALLY CONDUCTIVE ENCLOSURE, A HIGH A.C. VOLTAGE CONDUCTOR POSITIONED WITHIN SAID ENCLOSURE, AN ELECTRICALLY CONDUCTING MEANS DISPOSED BETWEEN SAID CONDUCTOR AND SAID ENCLOSURE IN AN ELECTRIC FIELD ESTABLISHED WHEN CURRENT FLOWS THROUGH SAID CONDUCTOR, AND CAPACITIVELY COUPLED THERETO BE AT A POTENTIAL RELATED IN MAGNITUDE TO SAID HIGH A.C. CONDUCTOR MAGNITUDE, AN A.C. VOLTAGE INDICATING MEANS HAVING ONE END THEREOF ELECTRICALLY CONNECTED TO SAID ELECTRICALLY CONDUCTING MEANS AND HAVING THE OTHER END THEREOF ELECTRICALLY CONNECTED TO SAID ENCLOSURE; SAID INDICATING MEANS COMPRISING A PAIR OF PARALLEL CONNECTED CIRCUITS EACH INCLUDING AN INDICATOR AND A SEMI-CONDUCTOR MEANS, SAID PARALLEL CIRCUITS BEING ENERGIZABLE BY THE POTENTIAL DIFFERENCE BE-
References Cited (Backward Citations)
US2910650A
Cited
US1905697A
Cited
US1879159A
Cited
GB337896A
Cited
US1987539A
Cited
CH217986A
Cited
FR1036965A
Cited
US2658167A
Cited
US2841766A
Cited
US2807006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |