US3129362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay control circuits
Assignee: SCM Corp
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Filing: 1960-12-05
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Granted: 1964-04-14
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Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Gilbert Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:47
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
230 words
IN A RELAY CONTROL CIRCUIT: (A) TWO RELAYS EACH HAVING A WINDING WITH THE FIRST RELAY OPERATING A PAIR OF SWITCH CONTACT SETS, ONE OF SAID CONTACT SETS BEING NORMALLY OPEN AND ONE OF SAID CONTACT SETS BEING NORMALLY CLOSED AND THE SECOND RELAY OPERATING A NORMALLY OPEN SET OF CONTACTS; (B) A CONDUCTING DEVICE HAVING UNIDIRECTIONAL CURRENT CARRYING CHARACTERISTICS, AND BEING PROVIDED WITH TWO TERMINALS; (C) MEANS CONNECTING ONE OF SAID TERMINALS TO BOTH THE NORMALLY CLOSED CONTACT SET AND THE NORMALLY OPEN CONTACT SET OF SAID FIRST RELAY AND MEANS CONNECTING SAID ONE TERMINAL THROUGH MOMENTARY SWITCH MEANS TO AN OUTPUT TERMINAL OF A POWER SUPPLY; (D) MEANS CONNECTING ONE CONTACT OF THE NORMALLY OPEN CONTACT SET OF SAID FIRST RELAY TO ONE TERMINAL OF THE WINDING OF THE SECOND RELAY AND MEANS CONNECTING ONE CONTACT OF THE NORMALLY CLOSED CONTACT SET OF SAID FIRST RELAY TO ONE TERMINAL OF THE WINDING OF SAID FIRST RELAY; (E) MEANS CONNECTING THE OTHER TERMINAL OF THE CONDUCTING DEVICE TO THE OTHER TERMINAL OF THE WINDING ON EACH RELAY AND MEANS CONNECTING SAID OTHER TERMINAL OF THE CONDUCTING DEVICE TO SAID OUTPUT TERMINAL OF THE POWER SUPPLY THROUGH THE NORMALLY OPEN CONTACT SET OF SAID SECOND RELAY; AND (F) MEANS CONNECTING THE FIRST MENTIONED TERMINAL OF EACH RELAY WINDING THROUGH A RESPECTIVE RESISTANCE TO A REFERENCE TERMINAL OF THE POWER SUPPLY.
Claim 2
Dependent Claim
230 words
IN A RELAY CONTROL CIRCUIT: (A) TWO RELAYS EACH HAVING A WINDING WITH THE FIRST RELAY OPERATING A PAIR OF SWITCH CONTACT SETS, ONE OF SAID CONTACT SETS BEING NORMALLY OPEN AND ONE OF SAID CONTACT SETS BEING NORMALLY CLOSED AND THE SECOND RELAY OPERATING A NORMALLY OPEN SET OF CONTACTS; (B) A CONDUCTING DEVICE HAVING UNIDIRECTIONAL CURRENT CARRYING CHARACTERISTICS, AND BEING PROVIDED WITH TWO TERMINALS; (C) MEANS CONNECTING ONE OF SAID TERMINALS TO BOTH THE NORMALLY CLOSED CONTACT SET AND THE NORMALLY OPEN CONTACT SET OF SAID FIRST RELAY AND MEANS CONNECTING SAID ONE TERMINAL THROUGH MOMENTARY SWITCH MEANS TO AN OUTPUT TERMINAL OF A POWER SUPPLY; (D) MEANS CONNECTING ONE CONTACT OF THE NORMALLY OPEN CONTACT SET OF SAID FIRST RELAY TO ONE TERMINAL OF THE WINDING OF THE SECOND RELAY AND MEANS CONNECTING ONE CONTACT OF THE NORMALLY CLOSED CONTACT SET OF SAID FIRST RELAY TO ONE TERMINAL OF THE WINDING OF SAID FIRST RELAY; (E) MEANS CONNECTING THE OTHER TERMINAL OF THE CONDUCTING DEVICE TO THE OTHER TERMINAL OF THE WINDING ON EACH RELAY AND MEANS CONNECTING SAID OTHER TERMINAL OF THE CONDUCTING DEVICE TO SAID OUTPUT TERMINAL OF THE POWER SUPPLY THROUGH THE NORMALLY OPEN CONTACT SET OF SAID SECOND RELAY; AND (F) MEANS CONNECTING THE FIRST MENTIONED TERMINAL OF EACH RELAY WINDING THROUGH A RESPECTIVE RESISTANCE TO A REFERENCE TERMINAL OF THE POWER SUPPLY.
References Cited (Backward Citations)
US1751263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |