Patent ID: 6581233
Filing Date: 2003-06-24
Classification: A61C

Abstract:
An electrically operable toothbrush including a brush head (18) which is connected with a drive shaft (12, 15), said brush head being supported so as to be rotatable about a longitudinal axis thereof; an electric motor (9) being arranged in a handgrip (1); and a gearing (11) which is coupled at an input with the electric motor (9) and at an output with the drive shaft (12, 15); wherein the gearing (11) includes a first eccentric wheel (33) located on a gear drive shaft (31) which is oriented substantially perpendicular to the drive shaft (12, 15), a second eccentric wheel (34) being located on the shaft (31) and a drive wheel (32) which is coupled with said first and second eccentric wheels (33, 34), the first eccentric wheel (33) being arranged in a circular recess (39) in a retainer (41) for the drive shaft (12, 15) so as to facilitate movement of the drive shaft (12, 15) upwardly and downwardly, and said second eccentric wheel (34) being arranged in an oval recess (40) in the retainer (41) so as to stabilize the lifting movement of the drive shaft (12, 15).