US3261996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hysteresis motor
Assignee: RTX Corp
•
Filing: 1963-07-29
•
Granted: 1966-07-19
•
Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Moharram M Fawzy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:28
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/02; H02K19/04; H02K19/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
A HYSTERESIS MOTOR INCLUDING IN COMBINATION A STATOR HAVING A PLURALITY OF POLES, A ROTOR COMPRISING HARDENED MAGNETIC STEEL, MEANS MOUNTIND SAID ROTOR AND SAID STATOR FOR RELATIVE MOVEMENT WITH AN AIR GAP THEREBETWEEN, A SLEEVE OF HIGH PERMEABILITY MATERIAL PROVIDED WITH A PLURALITY OF AXIALLY-EXTENDING CIRCUMFERENTIALLY-SPACED SLOTS DIVIDING SAID SLEEVE INTO A NUMBER OF ELEMENTS WHICH DIFFERS FROM THE NUMBER OF STATOR POLES, AND MEANS MOUNTING SAID SLEEVE IN SAID AIR GAP IN SPACED RELATIONSHIP TO SAID STATOR.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |