US Patent 6920659 Toothbrush

A power toothbrush including a handle and a brush head with bristles. In one embodiment, the toothbrush includes vibratory means for causing the brush head and the bristles to vibrate, and vibration isolation means for reducing the transfer of vibrations from the vibratory means to the handle. The vibratory means can include an eccentric motor positioned in the brush head or the brush shaft of the toothbrush. Vibration dampening material can be included in the vibration isolation means to reduce the transfer of vibrations to the handle.