| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a toothbrush capable of removing dental plaque, massaging gum and cleaning the tongue by brushing teeth once. <P>SOLUTION: The electric toothbrush 1 comprises a neck part 30 having a head part 20 composed by radially implanting a brush 22 around a shaft 21, a cylindrical handle part 40 connected to the base part of the neck part 30, a motor 43 provided inside the handle part, and a joint 42 provided inside the handle part for transmitting the rotation of the motor to the neck part 30. The short side of the head part 20 is 10-25 mm and the long side is 30-40 mm. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
