Brushless DC drive motor with external rotor for use in disc drives and like devices
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Mar 30, 1999
Grant Date -
N/A
app pub date -
Mar 23, 1998
filing date -
Jun 6, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brushless DC drive motor with an external rotor has three pole shoes on a substantially ring-shaped stator for each two poles on the rotor. The stator winding is commutated by a three-phase commutation network in such a fashion that first, second and third networks in the stator winding are cyclically connected to an external DC source in accordance with rotor position. Each of the networks comprises at least one stator coil wrapped around a neck of a single corresponding one of the pole shoes.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully