US3239705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric rotating machine
Assignee: Tri Tech Inc
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Filing: 1961-07-13
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Granted: 1966-03-08
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Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 Richard J Kavanaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:42
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/26; H02K23/00; H02K23/54
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
IN A D.C. ELECTRIC ROTATING MACHINE, A DISC-SHAPED ROTOR COMPRISING PRINTED CIRCUIT CONDUCTORS ARRANGED TO FORM COMPOSITE WINDING MEANS DISTRIBUTED ON OPPOSITE FACES OF THE DISC, EACH OF SAID PRINTED CIRCUIT CONDUCTORS HAVING A FIRST AND SECOND END PORTION, MEANS INTERMEDIATE THE CENTER AND THE PERIPHERY OF SAID DISC FOR INTERCONNECTING PAIRS OF THE SAID FIRST END PORTIONS ON SAID OPPOSITE DISC FACES, A COMMUTATOR CONNECTED TO THE SAID SECOND END PORTIONS OF THE CONDUCTORS ON ONE FACE OF SAID DISC, AND MEANS INCLUDING A RING-SHAPED MEMBER INTERCONNECTING THE SAID SECOND END PORTIONS OF THE CONDUCTORS ON THE OPPOSITE FACE OF SAID DISC WITH ONE ANOTHER.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |