Patent ID: 7877832
Filing Date: 2011-02-01
Classification: A46B,A61C

Abstract:
1. An electrically powered toothbrush comprising: a handle which contains an electric motor and an electrical power supply, a head part connected to the handle to thereby define a longitudinal direction between the handle and the head part, the handle having longitudinally opposed ends, the head part incorporating an oral hygiene part to be driven in motion by the electric motor, a transmission means including a drive shaft between the electric motor and the oral hygiene part, the head part being flexibly and resiliently connected to the handle such that the head part can move resiliently under pressure of the oral hygiene part against a tooth surface, the electric motor being moveably mounted within the handle, wherein the head part and electric motor are connected together such that said movement of the head part under the pressure of the oral hygiene part against a tooth surface is communicated to the electric motor to cause the electric motor to move in response to said movement wherein the drive shaft passes through the second part of the handle in a direction toward the head part, with a resiliently flexible connection between the first and second parts, the resiliently flexible connection being provided by means of a composite plastic material-elastomer material section between the first and second part and which comprises a plastic material section between the first and second parts incorporating one or plural apertures in the plastic material and which apertures contain the elastomer material.