Patent ID: 6964076

Claim:
An electric toothbrush, comprising: a housing; an electric motor connected to said housing, said electric motor having a motor output member for rotation about a motor output axis; a first transmission linked to said motor output member, said first transmission to convert rotational movement from said motor output member into rotational reciprocating movement at a first average angular speed and a first average angular sweep about a first transmission output axis; and a second transmission linked to said first transmission, said second transmission to convert rotational reciprocating movement from said first transmission into rotational reciprocating movement at a second average angular speed and a second average angular sweep about a second transmission output axis that is parallel to said motor output axis and to drive an output member to reciprocate at said second average angular speed and said second average angular sweep about said second transmission output axis, and wherein, said second average angular speed is greater than said first average angular speed and said second average angular sweep is greater than the first average angular sweep.