US3353066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surge protection circuit
Assignee: Joslyn Manufacturing and Supply Co
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Filing: 1965-09-17
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Granted: 1967-11-14
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Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 Souza Alwyn A De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:58
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/04; H02H9/043; H02H9/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN OVERVOLTAGE SURGE PROTECTION CIRCUIT, COMPRISING: A PAIR OF CONDUCTOR LINES ADAPTED TO BE CONNECTED BETWEEN A VOLTAGE SOURCE AND A LOAD; NORMALLY CONDUCTING SWITCH MEANS CONNECTED TO AT LEAST ONE OF SAID LINES; HIGH VOLTAGE PROTECTION MEANS INCLUDING A DISCHARGE DEVICE CONNECTED BETWEEN SAID LINES, SAID DEVICE BEING ADAPTED TO BE RENDERED CONDUCTING WHEN THE SURGE VOLTAGE ON SAID CONDUCTORS IS ABOVE A FIRST VOLTAGE; LOW VOLTAGE PROTECTION MEANS INCLUDING A CONTROLLED SEMICONDUCTOR RECTIFIER HAVING AN ANODE, A CATHODE AND A TRIGGER ELECTRODE WITH ITS ANODE AND CATHODE CONNECTED TO DIFFERENT ONES OF SAID PAIR OF LINES IN POSITION BETWEEN SAID DISCHARGE DEVICE AND THE OUTPUTS OF SAID LINES; MEANS CONNECTING ONE OF SAID LINES TO THE TRIGGER ELECTRODE OF SAID CONTROLLED RECTIFIER TO ENABLE SAID CONTROLLED RECTIFIER TO BE RENDERED CONDUCTING WHEN THE SURGE VOLTAGE ON SUCH LINE IS ABOVE A SECOND VOLTAGE LESS THAN SAID FIRST VOLTAGE; AND
Claim 2
Dependent Claim
151 words
AN OVERVOLTAGE SURGE PROTECTION CIRCUIT, COMPRISING: A PAIR OF CONDUCTOR LINES ADAPTED TO BE CONNECTED BETWEEN A VOLTAGE SOURCE AND A LOAD; NORMALLY CONDUCTING SWITCH MEANS CONNECTED TO AT LEAST ONE OF SAID LINES; HIGH VOLTAGE PROTECTION MEANS INCLUDING A DISCHARGE DEVICE CONNECTED BETWEEN SAID LINES, SAID DEVICE BEING ADAPTED TO BE RENDERED CONDUCTING WHEN THE SURGE VOLTAGE ON SAID CONDUCTORS IS ABOVE A FIRST VOLTAGE; LOW VOLTAGE PROTECTION MEANS INCLUDING A CONTROLLED SEMICONDUCTOR RECTIFIER HAVING AN ANODE, A CATHODE AND A TRIGGER ELECTRODE WITH ITS ANODE AND CATHODE CONNECTED TO DIFFERENT ONES OF SAID PAIR OF LINES IN POSITION BETWEEN SAID DISCHARGE DEVICE AND THE OUTPUTS OF SAID LINES; MEANS CONNECTING ONE OF SAID LINES TO THE TRIGGER ELECTRODE OF SAID CONTROLLED RECTIFIER TO ENABLE SAID CONTROLLED RECTIFIER TO BE RENDERED CONDUCTING WHEN THE SURGE VOLTAGE ON SUCH LINE IS ABOVE A SECOND VOLTAGE LESS THAN SAID FIRST VOLTAGE; AND
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |