US3079544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage compensating power supply unit
Assignee: Wurlitzer Co
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Filing: 1960-02-01
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Granted: 1963-02-26
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Expires: 1980-02-01
Abstract
No abstract record available.
Inventors
- 👤 Fred H Osborne
- 👤 John H Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:02
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
FOR USE WITH A PHONOGRAPH, A VOLTAGE COMPENSATING ELECTRICAL POWER SUPPLY UNIT COMPRISING, IN COMBINATION, FIRST AND SECOND POWER INPUT TERMINALS, A FIRST POWER OUTPUT TERMINAL CONNECTED TO SAID FIRST INPUT TERMINAL, A SECOND POWER OUTPUT TERMINAL, A VOLTAGE COMPENSATING TRANSFORMER HAVING A PRIMARY WINDING CONNECTED BETWEEN SAID SECOND OUTPUT TERMINAL AND SAID FIRST INPUT TERMINAL, A NORMALLY CLOSED FIRST SWITCH CONNECTING SAID SECOND INPUT TERMINAL TO SAID SECOND OUTPUT TERMINAL, A NORMALLY OPEN SECOND SWITCH, A RELAY OPERATOR CONNECTED TO OPEN SAID FIRST SWITCH AND CLOSE SAID SECOND SWITCH UPON ENERGIZATION OF THE OPERATOR, SAID TRANSFORMER INCLUDING A SECONDARY WINDING CONNECTED IN SERIES WITH SAID SECOND SWITCH BETWEEN SAID SECOND OUTPUT TERMINAL AND SAID SECOND INPUT TERMINAL AND HAVING A POLARITY RELATIVE TO THE POLARITY OF SAID INPUT TERMINALS WHICH MAKES THE INDUCED VOLTAGE ON SAID SECONDARY WINDING CUMULATIVE WITH THE VOLTAGE ACROSS SAID INPUT TERMINALS, A CONTROL TRANSFORMER HAVING A
Claim 2
Dependent Claim
152 words
FOR USE WITH A PHONOGRAPH, A VOLTAGE COMPENSATING ELECTRICAL POWER SUPPLY UNIT COMPRISING, IN COMBINATION, FIRST AND SECOND POWER INPUT TERMINALS, A FIRST POWER OUTPUT TERMINAL CONNECTED TO SAID FIRST INPUT TERMINAL, A SECOND POWER OUTPUT TERMINAL, A VOLTAGE COMPENSATING TRANSFORMER HAVING A PRIMARY WINDING CONNECTED BETWEEN SAID SECOND OUTPUT TERMINAL AND SAID FIRST INPUT TERMINAL, A NORMALLY CLOSED FIRST SWITCH CONNECTING SAID SECOND INPUT TERMINAL TO SAID SECOND OUTPUT TERMINAL, A NORMALLY OPEN SECOND SWITCH, A RELAY OPERATOR CONNECTED TO OPEN SAID FIRST SWITCH AND CLOSE SAID SECOND SWITCH UPON ENERGIZATION OF THE OPERATOR, SAID TRANSFORMER INCLUDING A SECONDARY WINDING CONNECTED IN SERIES WITH SAID SECOND SWITCH BETWEEN SAID SECOND OUTPUT TERMINAL AND SAID SECOND INPUT TERMINAL AND HAVING A POLARITY RELATIVE TO THE POLARITY OF SAID INPUT TERMINALS WHICH MAKES THE INDUCED VOLTAGE ON SAID SECONDARY WINDING CUMULATIVE WITH THE VOLTAGE ACROSS SAID INPUT TERMINALS, A CONTROL TRANSFORMER HAVING A
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |