Patent US3171083A successfully refreshed from Google Patents.
US3171083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum tube heater idling circuit
Assignee: Westinghouse Electric Corp
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Filing: 1962-04-16
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Granted: 1965-02-23
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Expires: 1982-04-16
Abstract
No abstract record available.
Inventors
- 👤 Charles B Heffron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:25
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/1607; H04B1/1623
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A POWER SUPPLY FOR A TELEVISION RECEIVER HAVING A PLURALITY OF VACUUM TUBES WITH HEATERS, A SOURCE OF ALTERNATING CURRENT, SAID HEATERS CONNECTED TO FORM THE HEATER CIRCUIT, SAID HEATER CIRCUIT OPERATIVELY CONNECTED TO SAID SOURCE TO PROVIDE A BIDIRECTIONAL CURRENT PATH THEREWITH, A UNIDIRECTIONAL CURRENT DEVICE AND A FILTER OPERATIVELY CONNECTED TO SAID SOURCE TO CONDUCT CURRENT FROM SAID SOURCE OF A FIRST POLARITY, CAPACITANCE MEANS AND ANOTHER UNIDIRECTIONAL CURRENT DEVICE OPERATIVELY CONNECTED TO SAID SOURCE TO CONDUCT CURRENT FROM SAID SOURCE OF AN OPPOSITE POLARITY FOR STORING ENERGY IN SAID CAPACITOR MEANS, SAID CAPACITOR MEANS RESPONSIVE TO CURRENT FROM SAID SOURCE OF SAID FIRST POLARITY TO CURRENT FROM SAID UNIDIRECTIONAL CURRENT DEVICE AND SAID FILTER, AND SWITCH MEANS TO SELECTIVELY (1) DISCONNECT SAID OTHER UNIDIRECTIONAL CURRENT DEVICE FROM SAID CAPACITANCE MEANS AND CONNECT SAID OTHER UNIDIRECTIONAL CURRENT DEVICE TO SAID HEATER CIRCUIT IN SERIES WITH SAID SOURCE TO APPLY REDUCED POWER TO SAID HEATERS, AND (2) DISCONNECT SAID UNIDIRECTIONAL CURRENT DEVICE FROM SAID SOURCE.
Claim 2
Dependent Claim
166 words
A POWER SUPPLY FOR A TELEVISION RECEIVER HAVING A PLURALITY OF VACUUM TUBES WITH HEATERS, A SOURCE OF ALTERNATING CURRENT, SAID HEATERS CONNECTED TO FORM THE HEATER CIRCUIT, SAID HEATER CIRCUIT OPERATIVELY CONNECTED TO SAID SOURCE TO PROVIDE A BIDIRECTIONAL CURRENT PATH THEREWITH, A UNIDIRECTIONAL CURRENT DEVICE AND A FILTER OPERATIVELY CONNECTED TO SAID SOURCE TO CONDUCT CURRENT FROM SAID SOURCE OF A FIRST POLARITY, CAPACITANCE MEANS AND ANOTHER UNIDIRECTIONAL CURRENT DEVICE OPERATIVELY CONNECTED TO SAID SOURCE TO CONDUCT CURRENT FROM SAID SOURCE OF AN OPPOSITE POLARITY FOR STORING ENERGY IN SAID CAPACITOR MEANS, SAID CAPACITOR MEANS RESPONSIVE TO CURRENT FROM SAID SOURCE OF SAID FIRST POLARITY TO CURRENT FROM SAID UNIDIRECTIONAL CURRENT DEVICE AND SAID FILTER, AND SWITCH MEANS TO SELECTIVELY (1) DISCONNECT SAID OTHER UNIDIRECTIONAL CURRENT DEVICE FROM SAID CAPACITANCE MEANS AND CONNECT SAID OTHER UNIDIRECTIONAL CURRENT DEVICE TO SAID HEATER CIRCUIT IN SERIES WITH SAID SOURCE TO APPLY REDUCED POWER TO SAID HEATERS, AND (2) DISCONNECT SAID UNIDIRECTIONAL CURRENT DEVICE FROM SAID SOURCE.
References Cited (Backward Citations)
US2683805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |