US3321652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo-electric machine
Assignee: North American Aviation Corp
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Filing: 1963-12-23
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Granted: 1967-05-23
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Lawrence G Opel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:04
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/22; H02K19/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A DYNAMO-ELECTRIC MACHINE COMPRISING A STATOR ELEMENT, A PLURALITY OF STATIONARY FIELD POLES, AN EXTERNAL MAGNETIC FLUX RETURN CONNECTION BETWEEN SAID STATOR ELEMENT AND SAID FIELD POLES, AND A SALIENT POLE ROTOR FOR SAID MACHINE COMPRISING A SOLID BODY OF REVOLUTION PROVIDING AN INTERNAL EXCITATION FLUX PATH BETWEEN EACH OF SAID FIELD POLES AND SAID STATOR ELEMENT, SAID ROTOR BEING
Claim 2
Dependent Claim
60 words
A DYNAMO-ELECTRIC MACHINE COMPRISING A STATOR ELEMENT, A PLURALITY OF STATIONARY FIELD POLES, AN EXTERNAL MAGNETIC FLUX RETURN CONNECTION BETWEEN SAID STATOR ELEMENT AND SAID FIELD POLES, AND A SALIENT POLE ROTOR FOR SAID MACHINE COMPRISING A SOLID BODY OF REVOLUTION PROVIDING AN INTERNAL EXCITATION FLUX PATH BETWEEN EACH OF SAID FIELD POLES AND SAID STATOR ELEMENT, SAID ROTOR BEING
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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |