US3300708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pole changer type frequency converter
Assignee: DIELECTRIC PRODUCTS ENGINEERIN
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Filing: 1965-07-20
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Granted: 1967-01-24
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Expires: 1985-07-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Earl C Rhyne
- 👤 Contino John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:40
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A FREQUENCY CONVERTER FOR CONVERTING AN INPUT SIGNAL HAVING A DETERMINED FREQUENCY TO AN OUTPUT SIGNAL HAVING HALF SAID DETERMINED FREQUENCY, COMPRISING TRANSFORMER MEANS HAVING A CORE, PRIMARY WINDING MEANS AND SECONDARY WINDING MEANS; INPUT MEANS FOR SUPPLYING AN INPUT SIGNAL HAVING A DETERMINED FREQUENCY OF PERIODIC WAVESHAPE; SWITCHING MEANS CONNECTED BETWEEN SAID INPUT MEANS AND SELECTED POINTS ON THE PRIMARY WINDING MEANS OF SAID TRANSFORMER MEANS, SAID SWITCHING MEANS BEING SELECTIVELY CONTROLLED BY SAID INPUT SIGNAL AND BY THE MAGNETIC CONDITION OF THE CORE OF SAID TRANSFORMER MEANS TO PROVIDE IN SAID PRIMARY WINDING MEANS A HALF SAID DETERMINED FREQUENCY SIGNAL HAVING ONLY A POSITIVE PORTION OF HALF CYCLE DURATION FOR EVERY OTHER FULL CYCLE OF THE INPUT SIGNAL COMMENCING WITH ONE OF THE FIRST AND SECOND CYCLE OF SAID INPUT SIGNAL AND ONLY A NEGATIVE PORTION OF HALF CYCLE DURATION FOR EVERY OTHER FULL CYCLE OF SAID INPUT SIGNAL COMMENCING WITH THE OTHER OF THE FIRST AND SECOND CYCLE OF SAID INPUT SIGNAL; AND OUTPUT MEANS CONNECTED TO THE SECONDARY WINDING MEANS OF SAID TRANSFORMER MEANS FOR PROVIDING SAID HALF SAID DETERMINED FREQUENCY SIGNAL.
Claim 2
Dependent Claim
186 words
A FREQUENCY CONVERTER FOR CONVERTING AN INPUT SIGNAL HAVING A DETERMINED FREQUENCY TO AN OUTPUT SIGNAL HAVING HALF SAID DETERMINED FREQUENCY, COMPRISING TRANSFORMER MEANS HAVING A CORE, PRIMARY WINDING MEANS AND SECONDARY WINDING MEANS; INPUT MEANS FOR SUPPLYING AN INPUT SIGNAL HAVING A DETERMINED FREQUENCY OF PERIODIC WAVESHAPE; SWITCHING MEANS CONNECTED BETWEEN SAID INPUT MEANS AND SELECTED POINTS ON THE PRIMARY WINDING MEANS OF SAID TRANSFORMER MEANS, SAID SWITCHING MEANS BEING SELECTIVELY CONTROLLED BY SAID INPUT SIGNAL AND BY THE MAGNETIC CONDITION OF THE CORE OF SAID TRANSFORMER MEANS TO PROVIDE IN SAID PRIMARY WINDING MEANS A HALF SAID DETERMINED FREQUENCY SIGNAL HAVING ONLY A POSITIVE PORTION OF HALF CYCLE DURATION FOR EVERY OTHER FULL CYCLE OF THE INPUT SIGNAL COMMENCING WITH ONE OF THE FIRST AND SECOND CYCLE OF SAID INPUT SIGNAL AND ONLY A NEGATIVE PORTION OF HALF CYCLE DURATION FOR EVERY OTHER FULL CYCLE OF SAID INPUT SIGNAL COMMENCING WITH THE OTHER OF THE FIRST AND SECOND CYCLE OF SAID INPUT SIGNAL; AND OUTPUT MEANS CONNECTED TO THE SECONDARY WINDING MEANS OF SAID TRANSFORMER MEANS FOR PROVIDING SAID HALF SAID DETERMINED FREQUENCY SIGNAL.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |