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
Animation control apparatus, animation control method, and non-transitory computer readable recording medium
Methods and systems for creating a tail risk hedge index and trading derivative products based thereon
Three-dimensional holographic display using active shutter
Error protection for pipeline resources
Time sharing type autostereoscopic display apparatus and method for driving the same
Method and apparatus for controlling power supply
Method and apparatus for connecting signal lines of multiple layers to certain contacts while preventing connections with other contacts
  Randomly Featured Patents
Starting device for heavy vehicles
Human peroxisomal thioesterase
Square type enclosed storage battery
Vehicle part with an airbag device and method for producing a vehicle part of this type
Production of higher carbonyl compounds from lower alcohols
Toy vehicle having motor-driven convertible top
Information processing apparatus, information processing method and program
Fluid transfer device
Apparatus to feed flowing media in metered manner
Panel side door structure for a motor vehicle