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US3737611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and circuit for interconnecting a plurality of inductors at the output transformer secondary
Assignee: Park Ohio Holdings Corp
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Filing: 1972-02-28
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Granted: 1973-06-05
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Expires: 1992-02-28
Abstract
Abstract A method and circuit for interconnecting a plurality of inductors relative to each other in order to reduce the reflected impedance at the secondary portion of an output transformer. The method comprises separating the inductors into separate groups with each group having the same number of inductors therein; electrically interconnecting the inductors of each group in series; and, electrically interconnecting the groups in parallel to each other for electrical interconnection to the output transformer secondary.
Inventors
- 👤 W Killian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:53
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/06; H05B6/08; H05B6/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
A method of controlling the reflected impedance in the secondary circuit portion of a high frequency output transformer connected to an oscillator wherein said secondary circuit portion is connected so as to simultaneously supply high frequency electrical energy to an even number of windings, each of said windings forming the primary of a transformer having a secondary winding connected to an inductor, said method comprising the steps of: dividing said windings into two winding groups, each having an equal number of windings; electrically coupling the windings in each of said groups in a series relationship relative to each other; and, electrically coupling said two groups of windings in a parallel relationship relative to each other.
Claim 2
Independent Claim
115 words
A method of controlling the reflected impedance in the secondary circuit portion of a high frequency output transformer connected to an oscillator wherein said secondary circuit portion is connected so as to simultaneously supply high frequency electrical energy to an even number of windings, each of said windings forming the primary of a transformer having a secondary winding connected to an inductor, said method comprising the steps of: dividing said windings into two winding groups, each having an equal number of windings; electrically coupling the windings in each of said groups in a series relationship relative to each other; and, electrically coupling said two groups of windings in a parallel relationship relative to each other.
Claim 3
Dependent Claim
109 words
A circuit for controlling the reflected impedance into the secondary circuit portion of a high frequency output transformer connected to an oscillator wherein said secondary circuit portion is connected so as to simultaneously supply high frequency electrical energy to a plurality of induction heating inductors, said circuit comprising: transformer for electrically coupling said plurality of inductors to said secondary circuit portion; first means for connecting said transformer means into a circuit; means for dividing said series circuit into two branches, each containing the same number of said series connected transformer means; and, second means for connecting said two branches into a parallel type electrical relationship relative to each other.
Claim 4
Dependent Claim
109 words
A circuit for controlling the reflected impedance into the secondary circuit portion of a high frequency output transformer connected to an oscillator wherein said secondary circuit portion is connected so as to simultaneously supply high frequency electrical energy to a plurality of induction heating inductors, said circuit comprising: transformer for electrically coupling said plurality of inductors to said secondary circuit portion; first means for connecting said transformer means into a circuit; means for dividing said series circuit into two branches, each containing the same number of said series connected transformer means; and, second means for connecting said two branches into a parallel type electrical relationship relative to each other.
Claim 5
Dependent Claim
25 words
The circuit as defined in claim 2 wherein said transformer means each comprises a transformer having a secondary winding connected to one of said inductors.
References Cited (Backward Citations)
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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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |