US5057733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular coil cores for electric motor
Assignee: Panasonic Holdings Corp
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Filing: 1989-11-08
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Granted: 1991-10-15
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Expires: 2009-11-08
Abstract
Abstract Modular coil cores for an electric motor eliminate tedious coil winding on pole members by making either the pole caps or the complete pole members of the stator yoke engageable with and disengageable from the stator yoke itself.
Inventors
- 👤 Takashi Sonoda
- 👤 Takafumi Asada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:39
CPC Classifications
H; H02; H02K; H02K29/00; H02K21/00; H02K21/12; H02K21/22; H02K1/00; H02K1/06; H02K1/12; H02K1/14; H02K1/146; H02K1/148; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
Modular coil cores for an electric motor comprising: a ring-shaped rotor magnet; a shaft; a stator having pole members, said stator being in the manner of opposing itself to an inner circumference of said ring-shaped rotor magnet; coiled wires which are wound onto an external circumference of said pole members of said stator; a housing which secures said stator in position and supports shaft bearings surrounding said shaft; and a hub which is connected to said shaft and which supports said ring-shaped rotor magnet; wherein said pole members of said stator have respective pole caps which are inserted tad into apertures in said pole members.
Claim 2
Dependent Claim
105 words
Modular coil cores for an electric motor comprising: a ring-shaped rotor magnet; a shaft; a stator having pole members, said stator being in the manner of opposing itself to an inner circumference of said ring-shaped rotor magnet; coiled wires which are wound onto an external circumference of said pole members of said stator; a housing which secures said stator in position and supports shaft bearings surrounding said shaft; and a hub which is connected to said shaft and which supports said ring-shaped rotor magnet; wherein said pole members of said stator have respective pole caps which are inserted tad into apertures in said pole members.
References Cited (Backward Citations)
US931375A
Cited
US2655613A
Cited
US3179825A
Cited
US3970980A
Cited
JPS5362101A
Cited
JPS5574334A
Cited
JPS566636A
Cited
US4418296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |