Patent US3560841A successfully refreshed from Google Patents.
US3560841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exciter device to transfer high excitation currents by means of branch circuits and plural slip rings
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1968-06-17
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Granted: 1971-02-02
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Expires: 1988-06-17
Abstract
Abstract AN EXCITER DEVICE FOR LARGE ALTERNATORS WHEREIN DIRECT EXCITATION CURRENT IS SUPPLIED FROM A STATIONARY RECTIFIER MEANS HAVING A PLURALITY OF SEPARATE CURRENT BRANCH CIRCVUITS TO THE INDUCTOR OR FIELD WINDING OF THE ALTERNATOR, HAVING OPPOSITE POLES AT ITS ENDS AND PROVIDED WITH AT LEAST TWO SLIP RINGS AT EACH POLE. THE SLIP RINGS AT EACH POLE ARE EACH ELECTRICALLY CONNECTED TO A SEPARATE CURRENT BRANCH CIRCUIT VIA THEIR RESPECTIVE BRUSHES AND TO EACH OTHER VIA THE INDUCTOR AND ALL OF THE BRANCH CIRCUITS ARE ELECTRICALLYT CONNECTED TO A CURRENT REGULATING DEVICE SO THAT THE CURRENT IN EACH BRANCH CIRCUIT IS EQUALIZED.
Inventors
- 👤 Egon Pannen
- 👤 Gerhard Lanz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:41
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |