US3098191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple purpose generator
Assignee: Miller Electric Manufacturing Co
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Filing: 1960-06-27
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Granted: 1963-07-16
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Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 Clyde F Cavert
- 👤 Russell E Hall
- 👤 Earl W Schabo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:46
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006; B23K9/1012
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
133 words
A REVOLVING FIELD GENERATOR FOR SELECTIVELY SUPPLYING A.C. POWER OF PREDETERMINED DIFFERENT FREQUENCIES IN ACCORDANCE WITH DIFFERENT SPEEDS OF THE GENERATOR AND HAVING A FIELD EXCITER DRIVEN IN SYNCHRONISM WITH THE GENERATOR AND ESTABLISHING OPTIMUM EXCITATION OF THE REVOLVING FIELD AT A BASE SPEED, WHICH COMPRISES A RECTIFIER HAVING AN OUTPUT CONNECTED IN SERIES BETWEEN THE EXCITER AND THE FIELD OF THE GENERATOR AND HAVING AN INPUT, SAID RECTIFIER BEING POLARIZED TO PASS THE CURRENT FROM THE EXCITER TO THE FIELD, VOLTAGE COMPENSATING MEANS CONNECTED TO THE OUTPUT OF THE GENERATOR, AND THE SWITCH MEANS TO SELECTIVELY CONNECT THE VOLTAGE COMPENSATING MEANS TO THE INPUT OF THE RECTIFIER IN ACCORDANCE WITH A PREDETERMINED SPEED OF THE GENERATOR VARYING FROM THE BASE SPEED MAINTAIN OPTIMUM EXCITATION OF THE REVOLVING FIELD FOR ALL GENERATOR SPEED.
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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |