US3267349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low source-voltage cutoff arrangement for converters
Assignee: Bolkow GmbH
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Filing: 1962-11-13
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Granted: 1966-08-16
•
Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Harri L Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:19
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3382; H02M3/3384
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A CONVERTER FOR A LOAD COMPRISING: A TRANSFORMER INCLUDING A PRIMARY WINDING, A SECONDARY WINDING CONNECTED WITH THE LOAD AND A FEEDBACK WINDING; A TRANSISTOR INCLUDING AN EMITTER, A COLLECTOR AND A BASE; A BATTERY INCLUDING A POSITIVE TERMINAL AND A NEGATIVE TERMINAL; A DIODE AND A ZENER DIODE CONNECTED IN A SERIES CIRCUIT ACROSS SAID BATTERY TERMINALS, SAID DIODE AND ZENER DIODE BEING CONNECTED IN THEIR FORWARD CONDUCTING AND REVERSE CONDUCTING DIRECTIONS, RESPECTIVELY, RELATIVE TO SAID BATTERY TERMINALS; FIRST CONDUCTOR MEANS CONNECTING SAID COLLECTOR TO ONE END OF SAID PRIMARY WINDING; SECOND CONDUCTOR MEANS CONNECTING SAID NEGATIVE TERMINAL TO THE OTHER END OF SAID PRIMARY WINDING; THIRD CONDUCTOR MEANS CONNECTING SAID POSITIVE TERMINAL TO SAID EMITTER; ONE END OF SAID FEEDBACK WINDING CONNECTED TO SAID BASE AND THE OTHER END OF SAID FEEDBACK WINDING CONNECTED AT A POINT BETWEEN SAID SERIES CONNECTED DIODE AND ZENER DIODE.
Claim 2
Dependent Claim
147 words
A CONVERTER FOR A LOAD COMPRISING: A TRANSFORMER INCLUDING A PRIMARY WINDING, A SECONDARY WINDING CONNECTED WITH THE LOAD AND A FEEDBACK WINDING; A TRANSISTOR INCLUDING AN EMITTER, A COLLECTOR AND A BASE; A BATTERY INCLUDING A POSITIVE TERMINAL AND A NEGATIVE TERMINAL; A DIODE AND A ZENER DIODE CONNECTED IN A SERIES CIRCUIT ACROSS SAID BATTERY TERMINALS, SAID DIODE AND ZENER DIODE BEING CONNECTED IN THEIR FORWARD CONDUCTING AND REVERSE CONDUCTING DIRECTIONS, RESPECTIVELY, RELATIVE TO SAID BATTERY TERMINALS; FIRST CONDUCTOR MEANS CONNECTING SAID COLLECTOR TO ONE END OF SAID PRIMARY WINDING; SECOND CONDUCTOR MEANS CONNECTING SAID NEGATIVE TERMINAL TO THE OTHER END OF SAID PRIMARY WINDING; THIRD CONDUCTOR MEANS CONNECTING SAID POSITIVE TERMINAL TO SAID EMITTER; ONE END OF SAID FEEDBACK WINDING CONNECTED TO SAID BASE AND THE OTHER END OF SAID FEEDBACK WINDING CONNECTED AT A POINT BETWEEN SAID SERIES CONNECTED DIODE AND ZENER DIODE.
References Cited (Backward Citations)
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Cited
US3015771A
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US2998577A
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US3168714A
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US3159799A
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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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |