Patent US4872994A successfully refreshed from Google Patents.
Patent US3206644A successfully refreshed from Google Patents.
US3206644A
Expired / Lapsed
US
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Multiply triggered spark gap
Assignee: Westinghouse Electric Corp
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Filing: 1961-10-16
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Granted: 1965-09-14
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Harvey E Spindle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:24
CPC Classifications
H; H01; H01T; H01T2/00; H01T2/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
ELECTRICAL APPARATUS INCLUDING A SOURCE OF POWER, A PLURALITY OF LOADS SUPPLIED BY SAID SOURCE, A PAIR OF MAIN DISCHARGE ELECTRODES SPACED APART TO FORM A PROTECTIVE DISCHARGE GAP CONNECTED IN PARALLEL WITH SAID LOADS, ONE OF SAID MAIN DISCHARGE ELECTRODES HAVING A PLURALITY OF TRIGGER ELECTRODES DISPOSED ADJACENT THE DISCHARGE PATH OF SAID PROTECTIVE DISCHARGE GAP, EACH OF SAID TRIGGER ELECTRODES INCLUDING MEANS FOR CONNECTING TO A LOAD TO BE PROTECTED, IMPEDANCE MEANS IN SERIES WITH EACHLOAD INTERMEDIATE SAID ONE MAIN DISCHARGE ELECTRODE AND THE LOAD, ONE OF SAID TRIGGER ELECTRODES BEING CONNECTED INTERMEDIATE SAID IMPEDANCE MEANS AND THE LOAD WHEREBY THE POTENTIAL DIFFERENCE BETWEEN THE TRIGGER ELECTRODE AND SAID ONE MAIN DISCHARGE ELECTRODE VARIES DIRECTLY WITH THE CURRENT THROUGH THE LOAD.
Claim 2
Dependent Claim
123 words
ELECTRICAL APPARATUS INCLUDING A SOURCE OF POWER, A PLURALITY OF LOADS SUPPLIED BY SAID SOURCE, A PAIR OF MAIN DISCHARGE ELECTRODES SPACED APART TO FORM A PROTECTIVE DISCHARGE GAP CONNECTED IN PARALLEL WITH SAID LOADS, ONE OF SAID MAIN DISCHARGE ELECTRODES HAVING A PLURALITY OF TRIGGER ELECTRODES DISPOSED ADJACENT THE DISCHARGE PATH OF SAID PROTECTIVE DISCHARGE GAP, EACH OF SAID TRIGGER ELECTRODES INCLUDING MEANS FOR CONNECTING TO A LOAD TO BE PROTECTED, IMPEDANCE MEANS IN SERIES WITH EACHLOAD INTERMEDIATE SAID ONE MAIN DISCHARGE ELECTRODE AND THE LOAD, ONE OF SAID TRIGGER ELECTRODES BEING CONNECTED INTERMEDIATE SAID IMPEDANCE MEANS AND THE LOAD WHEREBY THE POTENTIAL DIFFERENCE BETWEEN THE TRIGGER ELECTRODE AND SAID ONE MAIN DISCHARGE ELECTRODE VARIES DIRECTLY WITH THE CURRENT THROUGH THE LOAD.
References Cited (Backward Citations)
US1300127A
Cited
US2508954A
Cited
US2593429A
Cited
US2946923A
Cited
GB825899A
Cited
US3030547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |