Patent US3277348A successfully refreshed from Google Patents.
US3277348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay circuit
Assignee: AIR-O-TRONICS PRODUCTS Inc A CORP NY
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Filing: 1965-08-02
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Granted: 1966-10-04
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Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Steven F Trush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:40
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/02; H01H47/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A RELAY ENERGIZING CIRCUIT INCLUDING: A UNIJUNCTION TRANSISTOR HAVING AN EMITTER ELECTRODE, A FIRST BASE ELECTRODE AND A SECOND BASE ELECTRODE; AN EXCITING CIRCUIT FOR INTRODUCING A UNIDIRECTIONAL POTENTIAL TO SAID TRANSISTOR AND HAVING A FIRST TERMINAL AND A SECOND TERMINAL; MEANS INCLUDING A RELAY COIL CONNECTING SAID FIRST BASE ELECTRODE OF SAID TRANSISTOR TO SAID FIRST TERMINAL OF SAID EXCITING CIRCUIT; MEANS CONNECTING SAID SECOND BASE ELECTRODE TO SAID SECOND TERMINAL OF SAID EXCITING CIRCUIT; RESISTANCE MEANS CONNECTED TO SAID SECOND TERMINAL OF SAID EXCITING CIRCUIT AND TO A TAP ON SAID RELAY COIL; AND A TIME-CONSTANT NETWORK INCLUDING, FURTHER RESISTANCE MEANS CONNECTED TO SAID EMITTER ELECTRODE OF SAID TRANSISTOR AND TO SAID SECOND TERMINAL OF SAID EXCITING CIRCUIT, AND CAPACITANCE MEANS CONNECTED TO SAID EMITTER AND TO SAID TAP ON SAID RELAY COIL.
Claim 2
Dependent Claim
135 words
A RELAY ENERGIZING CIRCUIT INCLUDING: A UNIJUNCTION TRANSISTOR HAVING AN EMITTER ELECTRODE, A FIRST BASE ELECTRODE AND A SECOND BASE ELECTRODE; AN EXCITING CIRCUIT FOR INTRODUCING A UNIDIRECTIONAL POTENTIAL TO SAID TRANSISTOR AND HAVING A FIRST TERMINAL AND A SECOND TERMINAL; MEANS INCLUDING A RELAY COIL CONNECTING SAID FIRST BASE ELECTRODE OF SAID TRANSISTOR TO SAID FIRST TERMINAL OF SAID EXCITING CIRCUIT; MEANS CONNECTING SAID SECOND BASE ELECTRODE TO SAID SECOND TERMINAL OF SAID EXCITING CIRCUIT; RESISTANCE MEANS CONNECTED TO SAID SECOND TERMINAL OF SAID EXCITING CIRCUIT AND TO A TAP ON SAID RELAY COIL; AND A TIME-CONSTANT NETWORK INCLUDING, FURTHER RESISTANCE MEANS CONNECTED TO SAID EMITTER ELECTRODE OF SAID TRANSISTOR AND TO SAID SECOND TERMINAL OF SAID EXCITING CIRCUIT, AND CAPACITANCE MEANS CONNECTED TO SAID EMITTER AND TO SAID TAP ON SAID RELAY COIL.
References Cited (Backward Citations)
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Cited
US3109964A
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US3084311A
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US3178619A
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US3099758A
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US3154725A
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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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |