Patent ID: 8683639

Claim:
A mechanical toothbrush, having a longitudinal axis, said toothbrush comprising: a handle; a neck connected to the handle; a head connected to the neck, the head is made in the form of a protective screen opened at one side; said protective screen includes screen butt ends; an even number of bristle holders capable of angular displacements in opposite directions around the longitudinal axis, said bristle holders are mounted on said head; said bristle holders are made in the form of separate rings with a radial arrangement of bristles secured thereon; said bristle holders include holder butt ends; a drive mechanism for driving said bristle holders, said drive mechanism is disposed substantially within said handle, said neck, and said head; the handle, the neck, and the head are sequentially disposed along the longitudinal axis; and a number of movable seals; wherein: said bristle holders are joined to one another and with the protective screen by means of attaching said screen butt ends to said holder butt ends via corresponding said movable seals disposed therebetween, such that said bristle holders, said protective screen, and said movable seals collectively form a body hermetically sealing the drive mechanism.