US3270220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature d. c. motor
Assignee: Globe Industries Inc
•
Filing: 1964-11-30
•
Granted: 1966-08-30
•
Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Milton S Isaacson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:23
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/17; H02K23/00; H02K23/02; H02K23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A MOTOR COMPRISING A STATOR AND AN ARMATURE; SAID STATOR COMPRISING A CASTING CONSISTING OF OPPOSED POLE PIECES ENCAPSULATED BY NON-MAGNETIC MATERIAL EXTENDING ON ALL SURFACES THEREOF EXCEPT A BORE THRERTHROUGH, SAID BORE CONSISTING OF A SERIES OF THREE PASSAGES COAXIALLY ARRANGED IN PROGRESSIVELY DECREASING DIAMETER TO PROVIDE OPENINGS FOR RECEIVING A MAGNET, AN ARMATURE AND A BEARING, RESPECTIVELY, AND A CAP MEMBER MOUNTED TO SAID STATOR TO CLOSE SAID SERIES OF PASSAGES AND TO PROVIDE BEARING MEANS COAXIAL WITH SAID STATOR, SAID STATOR AS VIEWED IN TRANSVERSE CROSS-SECTION HAVING A LONG AND A SHORT DIMENSION, SAID POLE PIECES EXTENDING IN THE DIRECTION OF SAID LONG DIMENSION AND SAID SHORT DIMENSION BEING ONLY SLIGHTLY LARGER THAN SAID ARMATURE.
Claim 2
Dependent Claim
118 words
A MOTOR COMPRISING A STATOR AND AN ARMATURE; SAID STATOR COMPRISING A CASTING CONSISTING OF OPPOSED POLE PIECES ENCAPSULATED BY NON-MAGNETIC MATERIAL EXTENDING ON ALL SURFACES THEREOF EXCEPT A BORE THRERTHROUGH, SAID BORE CONSISTING OF A SERIES OF THREE PASSAGES COAXIALLY ARRANGED IN PROGRESSIVELY DECREASING DIAMETER TO PROVIDE OPENINGS FOR RECEIVING A MAGNET, AN ARMATURE AND A BEARING, RESPECTIVELY, AND A CAP MEMBER MOUNTED TO SAID STATOR TO CLOSE SAID SERIES OF PASSAGES AND TO PROVIDE BEARING MEANS COAXIAL WITH SAID STATOR, SAID STATOR AS VIEWED IN TRANSVERSE CROSS-SECTION HAVING A LONG AND A SHORT DIMENSION, SAID POLE PIECES EXTENDING IN THE DIRECTION OF SAID LONG DIMENSION AND SAID SHORT DIMENSION BEING ONLY SLIGHTLY LARGER THAN SAID ARMATURE.
References Cited (Backward Citations)
US1822859A
Cited
US2119989A
Cited
US2177472A
Cited
US2325915A
Cited
US2465446A
Cited
US3002261A
Cited
US2943313A
Cited
US2978598A
Cited
US2999952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |