Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Bearing assembly for an ultra quiet electric motor










Image Number 10 for United States Patent #5917258.

A high speed electric motor for automotive applications that is designed to effectively minimize vibration of its component parts and thus suppress noise generated during its operation. The motor incorporates acoustic engineering principles including surface vibration control, acoustic radiation efficiency, active intensity field control and noise control using acoustic materials to reduce overall vibration of the motor components and the motor noise sensed by the passenger of the vehicle. In one aspect, a bearing assembly for an electric motor is disclosed. The electric motor is of the type including a housing defining an internal chamber, an armature disposed within the internal chamber and having a rotatable shaft, and magnet means for inducing rotational movement of the armature shaft. The bearing assembly includes a bearing member for supporting the armature shaft for rotational movement and a bearing housing defining an internal bore that accommodates at least a portion of the bearing member. The bearing housing may comprise a vibration energy absorbing material, and is dimensioned such that an inner wall portion of the bearing housing defining the internal bore is in contacting engagement with an outer surface of the bearing member to facilitate absorption of vibration energy from the bearing member.








 
 
  Recently Added Patents
Fusing device to prevent overheating of a heating member and image forming apparatus having the same
Para-xylylene based microfilm elution devices
Hard disk drives having different rotational speeds
Media used in digital high speed inkjet web press printing
Systems and methods for a signed magnitude adder in one's complement logic
Method and apparatus to maintain welding current to compensate for deterioration of welding contact tip
Computer system for routing package deliveries
  Randomly Featured Patents
Direct-current power source apparatus
Cyclic ethers, solid electrolytes containing such ethers and electrolytic cells produced therefrom
Fluorescent indigo pigments
Treatment of mineral tailings
Protective scaffold
Slip control device for differential
Transverse flux motor as an external rotor motor and drive method
Portable display device with graphical user interface
Radiation detector circuit with real time photon counting
Float apparatus for docks and the like