Patent ID: 7761947

Claim:
An electric toothbrush, comprising: a handle at a first end of the toothbrush; a head at a second end of the toothbrush, the head having a longitudinal axis and comprising a first bristle holder having a first plurality of bristle tufts, and a second bristle holder having a second plurality of bristle tufts; a drive system comprising a motor and a rotatable shaft, wherein the rotatable shaft extends from the motor and into the head; wherein the first bristle holder oscillates about a first axis, wherein a protrusion extends from the first bristle holder; wherein the second bristle holder is operatively connected to the first bristle holder via the protrusion; wherein the second bristle holder is located between the first bristle holder and the handle; wherein the second bristle holder is driven by the first bristle holder; wherein the second bristle holder oscillates about a second axis; and wherein the second axis does not intersect the first bristle holder.