Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 12, 2008
Patent Application Number
10603902
Date Filed
June 24, 2003
Patent Primary Examiner
Patent abstract
A toothbrush provides a head with bristles, a neck and a handle. An eccentrically rotational weight is engaged for rotation with a motor, the weight disposed within the head. The motor is disposed within the handle. The head and neck are integrally formed with a natural resonance frequency of vibration approximately equal to the rotational speed of the motor and synchronized therewith.
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