Patent US3208042A successfully refreshed from Google Patents.
US3208042A
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Validity check control of plural inputs to relay circuits
Assignee: TDK Micronas GmbH
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Filing: 1959-11-23
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Granted: 1965-09-21
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Expires: 1979-11-23
Abstract
No abstract record available.
Inventors
- 👤 Leslie B Haigh
- 👤 Henry F Herbig
- 👤 Padalino Marco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:00
CPC Classifications
H; H04; H04Q; H04Q5/00; H01; H01H; H01H47/00; H04M; H04M3/00; H04M3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A VALIDITY CHECK CIRCUIT COMPRISING A PLURALITY OF "N" ENERGIZABLE CONDUCTORS, WHEREIN "N" IS AN INTEGER, A SINGLE TWO-STATE DEVICE CONNECTED TO ALL OF SAID CONDUCTORS, SAID TWO-STATE DEVICE HAVING AN OPERATIVE THRESHOLD AT A LEVEL CORRESPONDING TO THE ENERGIZATION OF "K" CONDUCTORS, WHERE "K" IS AN INTEGER LESS THAN "N" AND AT LEAST EQUAL TO 1, AND SWITCHING DEVICE COUPLED IN SHUNT RELATION TO SAID TWO-STATE DEVICE, SAID SWITCHING DEVICE HAVING A BREAKDOWN LEVEL CORRESPONDING TO THE ENERGIZATION OF K+1 CONDUCTOR S TO PREVENT TO SAID TWO-STATE DEVICE FROM OPERATING WHEN MORE THAN K CONDUCTORS ARE ENERGIZED.
Claim 2
Dependent Claim
98 words
A VALIDITY CHECK CIRCUIT COMPRISING A PLURALITY OF "N" ENERGIZABLE CONDUCTORS, WHEREIN "N" IS AN INTEGER, A SINGLE TWO-STATE DEVICE CONNECTED TO ALL OF SAID CONDUCTORS, SAID TWO-STATE DEVICE HAVING AN OPERATIVE THRESHOLD AT A LEVEL CORRESPONDING TO THE ENERGIZATION OF "K" CONDUCTORS, WHERE "K" IS AN INTEGER LESS THAN "N" AND AT LEAST EQUAL TO 1, AND SWITCHING DEVICE COUPLED IN SHUNT RELATION TO SAID TWO-STATE DEVICE, SAID SWITCHING DEVICE HAVING A BREAKDOWN LEVEL CORRESPONDING TO THE ENERGIZATION OF K+1 CONDUCTOR S TO PREVENT TO SAID TWO-STATE DEVICE FROM OPERATING WHEN MORE THAN K CONDUCTORS ARE ENERGIZED.
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |