US3870944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor rectifier apparatus
Assignee: Toshiba Corp
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Filing: 1973-07-18
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Granted: 1975-03-11
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Expires: 1993-07-18
Abstract
Abstract The rectifier apparatus comprises first, second and third conductive films formed on one surface of a horseshoe shaped insulator plate, and are adapted to be connected with a three phase alternator, first and second DC output conductive plates formed on the opposite surface of the insulator plate, three pairs of main semiconductor elements mounted on the insulator plate and connected between the first, second and third conductive films and the first and second conductive plates so as to form a three phase full-wave rectifier, a fourth conductive film formed on one surface of the insulator plate, three auxiliary semiconductor elements received in the slots of the first output conductive plate and connected between the fourth conductive film and the first, second and third conductive films so as to form a three phase full-wave rectifier, and a DC output terminal of the full-wave rectifier mounted on the fourth conductive film.
Inventors
- 👤 Kazuo Ogawa
- 👤 Tetsuo Machii
- 👤 Takahiro Sawano
- 👤 Katuhiko Kubota
- 👤 Yoshiharu Yotumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:02
CPC Classifications
H; H10; H10W; H10W90/00; H02; H02K; H02K11/00; H02K11/04; H02K11/049; H02K11/05; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
337 words
Semiconductor rectifier apparatus comprising an insulator plate; first, second and third conductive films which are formed on one surface of said insulator plate and are adapted to be connected to receive respective phase currents of a three phase alternator; first and second DC output conductive plates applied onto the other surface of said insulator plate; three pairs of main semiconductor rectifier elements mounted on said insulator plate and connected between said first, second and third conductive films and said first and second conductive plates so as to form a three phase full-wave rectifier, each one of said first and second conductive plates being formed with three circular recesses adapted to contain said three pairs of the main semiconductor rectifier elements, each rectifier element comprising one electrode carried by a metal support soldered to the bottom surface of said circular recess, a resilient lead wire connected to the other electrode extending to the outside through said insulator plate and a predetermined one of said conductive films, a reinforcing ring encircling the projected end of said lead wire, and solder means for securing said reinforcing ring to said predetermined one of said conductive films together with said projected end; a fourth conductive film formed on said one surface of said insulator plate; three solts formed in the predetermined positions of said first and second DC output conductive plates; three auxiliary semiconductor rectifier elements each having first and second lead wires, said semiconductor rectifier elements Being inserted in said three solts and mounted on the other surface of said insulator plate, one ends of said lead wires being inserted through said insulator plate and connected between said fourth conductive film and said first, second and third conductive films so as to form a three phase auxiliary full-wave rectifier; the positive and negative main DC output terminals of said full-wave rectifier which are provided for said first and second conductive plates, respectively; and an auxiliary DC ouput terminal of said auxiliary full-wave rectifier which is provided for said fourth conductive film.
Claim 2
Dependent Claim
337 words
Semiconductor rectifier apparatus comprising an insulator plate; first, second and third conductive films which are formed on one surface of said insulator plate and are adapted to be connected to receive respective phase currents of a three phase alternator; first and second DC output conductive plates applied onto the other surface of said insulator plate; three pairs of main semiconductor rectifier elements mounted on said insulator plate and connected between said first, second and third conductive films and said first and second conductive plates so as to form a three phase full-wave rectifier, each one of said first and second conductive plates being formed with three circular recesses adapted to contain said three pairs of the main semiconductor rectifier elements, each rectifier element comprising one electrode carried by a metal support soldered to the bottom surface of said circular recess, a resilient lead wire connected to the other electrode extending to the outside through said insulator plate and a predetermined one of said conductive films, a reinforcing ring encircling the projected end of said lead wire, and solder means for securing said reinforcing ring to said predetermined one of said conductive films together with said projected end; a fourth conductive film formed on said one surface of said insulator plate; three solts formed in the predetermined positions of said first and second DC output conductive plates; three auxiliary semiconductor rectifier elements each having first and second lead wires, said semiconductor rectifier elements Being inserted in said three solts and mounted on the other surface of said insulator plate, one ends of said lead wires being inserted through said insulator plate and connected between said fourth conductive film and said first, second and third conductive films so as to form a three phase auxiliary full-wave rectifier; the positive and negative main DC output terminals of said full-wave rectifier which are provided for said first and second conductive plates, respectively; and an auxiliary DC ouput terminal of said auxiliary full-wave rectifier which is provided for said fourth conductive film.
Claim 3
Dependent Claim
337 words
Semiconductor rectifier apparatus comprising an insulator plate; first, second and third conductive films which are formed on one surface of said insulator plate and are adapted to be connected to receive respective phase currents of a three phase alternator; first and second DC output conductive plates applied onto the other surface of said insulator plate; three pairs of main semiconductor rectifier elements mounted on said insulator plate and connected between said first, second and third conductive films and said first and second conductive plates so as to form a three phase full-wave rectifier, each one of said first and second conductive plates being formed with three circular recesses adapted to contain said three pairs of the main semiconductor rectifier elements, each rectifier element comprising one electrode carried by a metal support soldered to the bottom surface of said circular recess, a resilient lead wire connected to the other electrode extending to the outside through said insulator plate and a predetermined one of said conductive films, a reinforcing ring encircling the projected end of said lead wire, and solder means for securing said reinforcing ring to said predetermined one of said conductive films together with said projected end; a fourth conductive film formed on said one surface of said insulator plate; three solts formed in the predetermined positions of said first and second DC output conductive plates; three auxiliary semiconductor rectifier elements each having first and second lead wires, said semiconductor rectifier elements Being inserted in said three solts and mounted on the other surface of said insulator plate, one ends of said lead wires being inserted through said insulator plate and connected between said fourth conductive film and said first, second and third conductive films so as to form a three phase auxiliary full-wave rectifier; the positive and negative main DC output terminals of said full-wave rectifier which are provided for said first and second conductive plates, respectively; and an auxiliary DC ouput terminal of said auxiliary full-wave rectifier which is provided for said fourth conductive film.
Claim 4
Dependent Claim
337 words
Semiconductor rectifier apparatus comprising an insulator plate; first, second and third conductive films which are formed on one surface of said insulator plate and are adapted to be connected to receive respective phase currents of a three phase alternator; first and second DC output conductive plates applied onto the other surface of said insulator plate; three pairs of main semiconductor rectifier elements mounted on said insulator plate and connected between said first, second and third conductive films and said first and second conductive plates so as to form a three phase full-wave rectifier, each one of said first and second conductive plates being formed with three circular recesses adapted to contain said three pairs of the main semiconductor rectifier elements, each rectifier element comprising one electrode carried by a metal support soldered to the bottom surface of said circular recess, a resilient lead wire connected to the other electrode extending to the outside through said insulator plate and a predetermined one of said conductive films, a reinforcing ring encircling the projected end of said lead wire, and solder means for securing said reinforcing ring to said predetermined one of said conductive films together with said projected end; a fourth conductive film formed on said one surface of said insulator plate; three solts formed in the predetermined positions of said first and second DC output conductive plates; three auxiliary semiconductor rectifier elements each having first and second lead wires, said semiconductor rectifier elements Being inserted in said three solts and mounted on the other surface of said insulator plate, one ends of said lead wires being inserted through said insulator plate and connected between said fourth conductive film and said first, second and third conductive films so as to form a three phase auxiliary full-wave rectifier; the positive and negative main DC output terminals of said full-wave rectifier which are provided for said first and second conductive plates, respectively; and an auxiliary DC ouput terminal of said auxiliary full-wave rectifier which is provided for said fourth conductive film.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |