Patent US2341530A successfully refreshed from Google Patents.
US3094647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit protection means
Assignee: General Electric Co
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Filing: 1961-06-30
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Granted: 1963-06-18
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Expires: 1981-06-30
Abstract
No abstract record available.
Inventors
- 👤 Kenneth S Ferrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/577
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
CIRCUIT PROTECTION MEANS INCLUDING A PLURALITY OF PROTECTIVE CIRCUITS EACH COMPRISING, A PAIR OF INPUT TERMINALS, A FIRST AND A SECOND PAIR OF NORMALLY OPEN CONTACTS EACH PAIR HAVING ONE CONTACT THEREOF CONNECTED TO ONE OF SAID INPUT TERMINALS, A PAIR OF ELECTRIC CONDUCTORS EACH CONNECTED TO THE OTHER CONTACT OF ONE OF SAID PAIRS OF NORMALLY OPEN CONTACTS, RESPECTIVELY, A FIRST SERIES CIRCUIT CONNECTED BETWEEN SAID CONDUCTORS INCLUDING A ZENER DIODE AND A RELAY COIL, SAID ZENER DIODES HAVING A ZENER VOLTAGE EQUAL TO A PREDETERMINED MAXIMUM VOLTAGE, A SECOND SERIES CIRCUIT CONNECTED BETWEEN SAID CONDUCTORS INCLUDING A ZENER DIODE, A RELAY COIL, AND A PAIR OF NORMALLY CLOSED CONTACTS, SAID ZENER DIODE OF SAID SECOND SERIES CIRCUIT HAVING A ZENER VOLTAGE EQUAL TO A PREDETERMINED MINIMUM VOLTAGE, SAID NORMALLY CLOSED CONTACTS ADAPTED TO OPEN WHEN SAID RELAY COIL OF SAID FIRST SERIES CIRCUIT IS ENERGIZED,
Claim 2
Dependent Claim
147 words
CIRCUIT PROTECTION MEANS INCLUDING A PLURALITY OF PROTECTIVE CIRCUITS EACH COMPRISING, A PAIR OF INPUT TERMINALS, A FIRST AND A SECOND PAIR OF NORMALLY OPEN CONTACTS EACH PAIR HAVING ONE CONTACT THEREOF CONNECTED TO ONE OF SAID INPUT TERMINALS, A PAIR OF ELECTRIC CONDUCTORS EACH CONNECTED TO THE OTHER CONTACT OF ONE OF SAID PAIRS OF NORMALLY OPEN CONTACTS, RESPECTIVELY, A FIRST SERIES CIRCUIT CONNECTED BETWEEN SAID CONDUCTORS INCLUDING A ZENER DIODE AND A RELAY COIL, SAID ZENER DIODES HAVING A ZENER VOLTAGE EQUAL TO A PREDETERMINED MAXIMUM VOLTAGE, A SECOND SERIES CIRCUIT CONNECTED BETWEEN SAID CONDUCTORS INCLUDING A ZENER DIODE, A RELAY COIL, AND A PAIR OF NORMALLY CLOSED CONTACTS, SAID ZENER DIODE OF SAID SECOND SERIES CIRCUIT HAVING A ZENER VOLTAGE EQUAL TO A PREDETERMINED MINIMUM VOLTAGE, SAID NORMALLY CLOSED CONTACTS ADAPTED TO OPEN WHEN SAID RELAY COIL OF SAID FIRST SERIES CIRCUIT IS ENERGIZED,
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |