US3296475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo-electric machines, and rotors therefor
Assignee: Individual
•
Filing: 1965-09-15
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Granted: 1967-01-03
•
Expires: 1985-09-15
Abstract
No abstract record available.
Inventors
- 👤 Louis W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:22
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/20; H02K1/22; H02K2201/00; H02K2201/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
134 words
IN A DYNAMO-ELECTRIC MACHINE, A PLURALITY OF ROTOR SECTIONS EACH OF WHICH COMPRISES A PLURALITY OF WEDGESHAPED LAMINATION STACKS POSITIONED IN A CIRCULAR ARRAY AND SUPPORTED IN SAID ARRAY BY A CAST ALUMINUM MATRIX DISPOSED AROUND AND BETWEEN SAID ARRAYED STACKS, EACH OF SAID ROTOR SECTIONS HAVING A CENTRAL SUPPORT COMPRISING A STEEL HUB, SAID CENTRAL SUPPORT FURTHER INCLUDING MEANS DEFINING AIR PASSAGES ADJACENT SAID HUB, MEANS MOUNTING SAID HUBS FOR ROTATION IN SAID MACHINE, STATOR MEANS DISPOSED ADJACENT SAID ROTOT SECTIONS, AND AIR ENTRY PASSAGE MEANS COMMUNICATING THE EXTERIOR OF SAID MACHINE WITH SAID AIR PASSAGES, SAID ROTOR SECTIONS AND STATOR MEANS BEING MOUNTED IN AXIALLY MUTUALLY SPACED RELATION TO ONE ANOTHER TO PROVIDE A PLURALITY OF SUBSTANTIALLY RADIALLY EXTENDING GAPS THEREBETWEEN FOR THE EGRESS OF AIR FROM THE INTERIOR OF SAID MACHINE.
References Cited (Backward Citations)
US2550571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |