US3387151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor
Assignee: Individual
•
Filing: 1965-02-16
•
Granted: 1968-06-04
•
Expires: 1985-02-16
Abstract
No abstract record available.
Inventors
- 👤 Paul J Selgin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:21
CPC Classifications
H; H02; H02K; H02K25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
AN ELECTRIC MOTOR COMPRISING; A ROTOR SECURED TO AN AXIAL SHAFT; A PLURALITY OF ROTOR POLE PIECES OF FERROMAGNETIC MATERIAL SYMMETRICALLY SPACED ABOUT THE SHAFT AND SECURED THERETO, SAID ROTOR POLE PIECES ARRANGED IN PAIRS ADJOINING AN ANNULAR AIR GAP; A ROTOT TOROIDAL WINDING FOR PRODUCING MAGNETIC FLUX IN SAID POLE PIECES, SAID ROTOR WINDING MOUNTED IN AXIAL ALIGNMENT WITH THE SHAFT AND SUPPORTED BY A SHIELD OF FERROMAGNETIC MATERIAL; A PLURALITY OF STATOR POLE PIECES ARRANGED IN PAIRS ADJOINING AN ANNULAR GAP; A STATOR TOROIDAL WINDING FOR PRODUCING MAGNETIC FLUX IN THE STATOR POLE PIECES, SAID STATOR WINDING MOUNTED IN AXIAL ALIGNMENT WITH THE SHAFT AND SUPPORTED BY A SHIELD OF FERROMAGNETIC MATERIAL, TWO TOOTHED WHEELS SECURED TO SAID SHAFT; A PAIR OF BRUSHES MOUNTED FOR MAK-
Claim 2
Dependent Claim
128 words
AN ELECTRIC MOTOR COMPRISING; A ROTOR SECURED TO AN AXIAL SHAFT; A PLURALITY OF ROTOR POLE PIECES OF FERROMAGNETIC MATERIAL SYMMETRICALLY SPACED ABOUT THE SHAFT AND SECURED THERETO, SAID ROTOR POLE PIECES ARRANGED IN PAIRS ADJOINING AN ANNULAR AIR GAP; A ROTOT TOROIDAL WINDING FOR PRODUCING MAGNETIC FLUX IN SAID POLE PIECES, SAID ROTOR WINDING MOUNTED IN AXIAL ALIGNMENT WITH THE SHAFT AND SUPPORTED BY A SHIELD OF FERROMAGNETIC MATERIAL; A PLURALITY OF STATOR POLE PIECES ARRANGED IN PAIRS ADJOINING AN ANNULAR GAP; A STATOR TOROIDAL WINDING FOR PRODUCING MAGNETIC FLUX IN THE STATOR POLE PIECES, SAID STATOR WINDING MOUNTED IN AXIAL ALIGNMENT WITH THE SHAFT AND SUPPORTED BY A SHIELD OF FERROMAGNETIC MATERIAL, TWO TOOTHED WHEELS SECURED TO SAID SHAFT; A PAIR OF BRUSHES MOUNTED FOR MAK-
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) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |