Patent US3229133A successfully refreshed from Google Patents.
US3229133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current homopolar generators
Assignee: Individual
•
Filing: 1963-03-08
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Granted: 1966-01-11
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Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Sears Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:51
CPC Classifications
H; H02; H02K; H02K31/00; H02K31/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A DIRECT CURRENT HOMOPOLAR GENERATOR COMPRISING A ROTOR, MEANS CONNECTED WITH SAID ROTOR TO ROTATE THE SAME, AN ELECTRICALLY CONDUCTIVE ELEMENT FIXED TO AND FOR SIMULTANEOUS ROTATION WITH SAID ROTOR, MEANS OPERABLE TO PRODUCE A UNIDIRECTIONAL MAGNETIC FIELD IN SAID ROTOR AND THROUGH SAID ELECTRICALLY CONDUCTIVE ELEMENT, MEANS ROTATABLE SIMULTANEOUSLY WITH SAID ROTOR TO COLLECT THE MAGNETIC FIUX AFTER THE SAME MOVES THROUGH SAID CONDUCTIVE ELEMENT, AND A PLURALITY OF MEANS COMPLETING AN ELECTRICAL CIRCUIT ACROSS SUBSTANTIALLY EQUAL RADIALLY DISTANCED PORTIONS ON SAID ELECTRICALLY CONDUCTIVE ELEMENT AND SPACED LENGTHWISE FROM EACH OTHER ON OPPOSITE SIDES OF SAID MAGNETIC FIELD DIRECTED THROUGH SAID ELECTRICALLY CONDUCTIVE ELEMENT.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |