Insulated bearing motor assembly
AssigneeHewlett-Packard Development Company, L.P.
InventorsWade D. Vinson, John P. Franz, George A. Ozuna
Life of this patent
Estimating the term…
Abstract
A motor with improved bearing life has a shaft rotatably supported by a pair bearings. The motor further has a stator and a rotor, wherein one of the stator and the rotor is mounted to the shaft and the other of the stator and the rotor surrounds the shaft so that the stator and rotor can rotate with respect to one another. The motor has one or more features to protect at least one of the bearings from heat emitted by at least one of the stator and the rotor.
Claims20
A motor with improved bearing life, the motor comprising:
- a shaft rotatably supported by a pair of bearings;
- a stator and a rotor, one of the stator and the rotor being mounted to the shaft and the other of the stator and the rotor surrounding the shaft;
- and
- means for protecting the bearings from heat emitted by at least one of the stator and the rotor.
A motor with improved bearing life, the motor comprising:
- a housing;
- a shaft extending through the housing, the shaft being rotatably supported by a pair of bearings mounted to the housing;
- a stator and a rotor, one of the stator and the rotor being mounted to the shaft and the other of the stator and the rotor being mounted to the housing surrounding the shaft;
- and
- a thermal isolator for protecting one of the bearings from heat emitted by at least one of the stator and the rotor.
A motor with improved bearing life, the motor comprising:
- a housing;
- a shaft extending through the housing, the shaft being rotatably supported by a pair of bearings mounted to the housing;
- a stator and a rotor, one of the stator and the rotor being mounted to the shaft and the other of the stator and the rotor being mounted to the housing surrounding the shaft;
- and
- a plurality of openings in the housing for enabling air circulation to cool the stator and rotor and for reducing the conduction pathway for heat transfer from the housing to at least one of the bearings.
Dependencies are inferred from the claim text.