Patent ID: 7730569
Filing Date: 2010-06-08
Classification: A61C

Abstract:
1. A head portion for a nodally mounted toothbrush which includes a handle portion having a driving system therein, comprising: a head portion, arranged to be connectable to and separable from the handle portion, for a nodally mounted toothbrush, the head portion being removable as a unit from the handle portion of a toothbrush and being disposable, leaving the driving system in place in the handle, the head portion including (a) a drive shaft on which is mounted a brushhead with bristles for cleaning of teeth, (b) a spring assembly which is responsive to the driving system to move the drive shaft and (c) a cover member which includes a removable connection to the handle portion, the spring assembly including first and second spring sections and a node point between the two sections, wherein one spring section in operation is moved in one direction by the driving system while the other spring section moves in an opposing direction, and wherein the drive shaft extends from the second spring section.