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Patent US3280353A successfully refreshed from Google Patents.
US3280353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric rotating machine
Assignee: TRI TEK Inc
•
Filing: 1961-10-04
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Granted: 1966-10-18
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Haydon
- 👤 Charles S Daniels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:21
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/54; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN A MOTOR OF THE TYPE INCLUDING A ROTOR AND A PERMANENT MAGNET PROVIDING MAGNETIC FLUX FOR INTERACTION WITH CURRENT FLOWING IN THE ROTOR TO CAUSE ROTATION THEREOF, A MOTOR HOUSING COMPRISING A PLURALITY OF MEMBERS OF MAGNETIC MATERIAL HELD TOGETHER SOLELY BY THE FLUX FROM SAID PERMANENT MAGNET.
Claim 2
Dependent Claim
49 words
IN A MOTOR OF THE TYPE INCLUDING A ROTOR AND A PERMANENT MAGNET PROVIDING MAGNETIC FLUX FOR INTERACTION WITH CURRENT FLOWING IN THE ROTOR TO CAUSE ROTATION THEREOF, A MOTOR HOUSING COMPRISING A PLURALITY OF MEMBERS OF MAGNETIC MATERIAL HELD TOGETHER SOLELY BY THE FLUX FROM SAID PERMANENT MAGNET.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |