Patent US3182248A successfully refreshed from Google Patents.
US3182248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage building transformer
Assignee: DRESSEN BARNES ELECTRONICS COR
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Filing: 1962-01-29
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Granted: 1965-05-04
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Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 Bernard F Mcnamee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:04
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
AN ADJUSTABLE TRANSFORMER COMPRISING A MAGNETIC CORE HAVING A PRIMARY WINDING AND A PAIR OF SECONDARY WINDINGS HAVING TURN RATIOS RELATED AS THE NUMBERS SEVEN TO ONE, EACH WINDING HAVING SEPARATE END TERMINALS AND AND INTERMEDIATE TERMINAL DIVIDING THE CORRESPONDING WINDING INTO SECTIONS HAVING TURN RATIOS TO PROVIDE VOLTAGES IN THE RATIO OF TWO TO ONE SUCH THAT CUMULATIVE AND DIFFERENTIAL CONNECTION OF SELECTED WINDING SECTION TERMINALS PROVIDES ANY VOLTAGE PROPORTIONAL TO NUMBERS OF THE SERIES 1, 2, 3, 4, 5, 6, ...
References Cited (Backward Citations)
US2930964A
Cited
US2884587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |