US3259771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous motors
Assignee: Individual
•
Filing: 1963-05-13
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Granted: 1966-07-05
•
Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Samuel J Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:18
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/02; H02K7/00; H02K7/10; H02K7/118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PERMANENT MAGNET SYNCHRONOUS MOTOR COMPRISING A NON-ROTATABLE FIELD COIL, A PLURALITY OF CAGE-LIKE ELEMENTS NESTED TOGETHER AND SURROUNDING SAID FIELD COIL, MEANS MOUNTING SAID CAGE-LIKE ELEMENTS TO ALLOW SAID ELEMENTS TO BE OSCILLATABLY ROTATABLE RELATIVE TO THE FIELD COIL, MEANS TO LIMIT THE DEGREE OF OSCILLATABLE ROTATION OF SAID CAGE-LIKE FIELD ELEMENTS, AND A PERMANENT MAGNET ROTOR OVERLYING AND FORMING AN AIR GAP WITH THE CAGE-LIKE ELEMENTS.
Claim 2
Dependent Claim
68 words
A PERMANENT MAGNET SYNCHRONOUS MOTOR COMPRISING A NON-ROTATABLE FIELD COIL, A PLURALITY OF CAGE-LIKE ELEMENTS NESTED TOGETHER AND SURROUNDING SAID FIELD COIL, MEANS MOUNTING SAID CAGE-LIKE ELEMENTS TO ALLOW SAID ELEMENTS TO BE OSCILLATABLY ROTATABLE RELATIVE TO THE FIELD COIL, MEANS TO LIMIT THE DEGREE OF OSCILLATABLE ROTATION OF SAID CAGE-LIKE FIELD ELEMENTS, AND A PERMANENT MAGNET ROTOR OVERLYING AND FORMING AN AIR GAP WITH THE CAGE-LIKE ELEMENTS.
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |