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
Information recording medium and information processing method for accessing content with license or copyright protection
Device for preparing a body fluid for a bacteriological analysis
System and method for storing redundant information
Profile and template based dynamic portable user workflow
System and method for creating a build set and bill of materials from a master source model
Selecting input/output components of a mobile terminal
Methods of prognosing a rheumatoid arthritis remission phenotype
  Randomly Featured Patents
Method of making FET utilizing shadow masking and diffusion from a doped oxide
Reflective microelectrical mechanical structure (MEMS) optical modulator and optical display system
Power management for buses in cmos circuits
Apparatus and method for driving liquid crystal display
2-Heteroaryl-methyl)-5,9.beta.-dialkyl-6,7-benzomorphans and salts thereof
Alkyd-monomer high-solids coating composition
Dual alternating transverse feeding mechanism for lumber edgers
Aplanatic geophysical exploration system
Vehicle decor
Patient assistance vest