A powered toothbrush to provide oral hygiene having a brush section with a first bristle carrier that is powered and driven to rotate in an oscillating manner through a prescribed angle. A second bristle carrier is pivotally connected to the first bristle carrier and also pivotally connected to the brush...http://www.google.es/patents/US20040060137?utm_source=gb-gplus-sharePatente US20040060137 - Toothbrush with sectorial motion
