US3339110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay circuits
Assignee: NAVIGATIONAL COMPUTER CORP
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Filing: 1964-05-13
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Granted: 1967-08-29
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jr John Paul Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:02
CPC Classifications
H; H03; H03K; H03K3/00; H01; H01H; H01H9/00; H01H9/54; H01H9/541; H01H9/542; H01H50/00; H01H50/02; H01H50/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A SWITCHING CIRCUIT COMPRISING IN COMBINATION, A RELAY HAVING A PAIR OF CONTACTS AND AN ENERGIZING COIL FOR CLOSING THE CONTACTS, A SEMICONDUCTOR DISCHARGE DEVICE HAVING AN UNIDIRECTIONAL DISCHARGE PATH AND A DISCHARGE TRIGGER ELECTRODE, A COUPLING CIRCUIT BETWEEN THE ENERGIZING COIL AND THE TRIGGER ELECTRODE COUPLED FOR CONVEYING A TRIGGER POTENTIAL OF THE REQUISITE POLARITY TO ESTABLISH A DISCHARGE IN THE DEVICE WHEN SAID COIL IS ENERGIZED, A DISCHARGE SUSTAINING CIRCUIT COUPLING SAID DISCHARGE PATH ACROSS SAID SET OF CONTACTS TO PROVIDE DISCHARGE CURRENT WHEN SAID CONTACTS ARE OPEN, A LOAD DEVICE, AND A DIRECT CURRENT SOURCE COUPLED TO THE LOAD DEVICE AND SAID CONTACTS WHEREIN THE COUPLING CIRCUIT COMPRISES AN AUXILIARY COIL INDUCTIVELY COUPLED TO SAID ENERGIZING COIL.
Claim 2
Dependent Claim
120 words
A SWITCHING CIRCUIT COMPRISING IN COMBINATION, A RELAY HAVING A PAIR OF CONTACTS AND AN ENERGIZING COIL FOR CLOSING THE CONTACTS, A SEMICONDUCTOR DISCHARGE DEVICE HAVING AN UNIDIRECTIONAL DISCHARGE PATH AND A DISCHARGE TRIGGER ELECTRODE, A COUPLING CIRCUIT BETWEEN THE ENERGIZING COIL AND THE TRIGGER ELECTRODE COUPLED FOR CONVEYING A TRIGGER POTENTIAL OF THE REQUISITE POLARITY TO ESTABLISH A DISCHARGE IN THE DEVICE WHEN SAID COIL IS ENERGIZED, A DISCHARGE SUSTAINING CIRCUIT COUPLING SAID DISCHARGE PATH ACROSS SAID SET OF CONTACTS TO PROVIDE DISCHARGE CURRENT WHEN SAID CONTACTS ARE OPEN, A LOAD DEVICE, AND A DIRECT CURRENT SOURCE COUPLED TO THE LOAD DEVICE AND SAID CONTACTS WHEREIN THE COUPLING CIRCUIT COMPRISES AN AUXILIARY COIL INDUCTIVELY COUPLED TO SAID ENERGIZING COIL.
References Cited (Backward Citations)
US2665396A
Cited
US2789253A
Cited
US3193711A
Cited
US3184619A
Cited
US3237030A
Cited
US3309570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |