Patent ID: 6434773
Filing Date: 2002-08-20
Classification: A46B,A61C,B29L

Abstract:
An electrical toothbrush comprising:a. a handle; b. a brush head having a platform with top and bottom surfaces and first and second posts which extend from the top surface; c. a neck which connects the handle and the brush head; d. a first replaceable brush element comprising a platform having a side wall between a top surface and a bottom surface, a circular recess in said bottom surface for detachably mounting the first replaceable brush element on the first post of said brush head, a notch in said side wall and a plurality of bristles attached to the top surface wherein the free ends of said bristles define a first brush surface; e. a second replaceable brush element comprising a platform having a side wall between a top surface and a bottom surface, a circular recess in said bottom surface for detachably mounting the second replaceable brush element on the second post of said brush head, a notch in said side wall and a plurality of bristles attached to the top surface wherein the free ends of said bristles define a second brush surface; f. a detachable retention cradle comprising a platform having a top surface, a bottom surface, and first and second openings through said platform surrounded by first and second retention rims for holding said first and second replaceable brush elements in a freely rotatable position on said first and second posts; g. a motor positioned within said handle; h. a drive shaft positioned within said neck and having a first end, a second end and a central longitudinal axis, said drive shaft being driveable by said motor; and i. means for imparting an oscillating motion to the first and second replaceable brush elements through engagement with their side wall notches, said means being connected to the drive shaft.