Motor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 28, 1994
Grant Date -
N/A
app pub date -
May 15, 1992
filing date -
May 16, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spindle motor includes a housing, a shaft member fixed in the housing, a rotor rotatably supported on the shaft member, a rotor magnet mounted on the rotor, and a stator placed facing with the rotor magnet. The housing and the shaft member are made of materials different in hardness and a sleeve having substantially the same level of hardness as the shaft member is placed between the housing and the shaft member. A bushing is provided between bearing members and the rotor which is rotatably supported by the bearing members. The bushing and a yoke which is mounted on the rotor are secured together in the axial middle part of the bushing. In addition, through holes which enable communications between the interior and exterior area of the motor are provided in the bushing.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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