Resources Contact Us Home
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
Assistance on the go
Status polling
Tomographic image generating apparatus and tomographic image generating method
Display apparatus, control method thereof, and display system with automatic image orientation adjustment
Method and device for the detection, identification and treatment of sleep apnea/hypopnea
Phenanthroline compounds and electroluminescent devices using the same
Method and apparatus for transmitting ranging channel in wireless communication system
  Randomly Featured Patents
Process for 3-acylamino benzodiazepines
Contact material for treating sewage of braided pile material
Task management using multiple processing threads
Watch case
Image processing apparatus
Hand shower
Method and apparatus for software access to a microprocessor serial number
Centrifuge rotor having swinging members with variable pivot points
Refractory composition
Ignition timing controlling apparatus and ignition timing controlling method for internal combustion engine