US Patent 7086111 Electric dental cleaning device

The invention is directed to a dental cleaning device. It relates in particular to a handle section of an electric toothbrushing device, with a coupling section for coupling various cleaning tools thereto, a drive mechanism for driving the coupled cleaning tool, and a control device for controlling the drive mechanism. The invention further relates to such cleaning tools. According to the invention the handle section includes an electronic interlock device which is deactivated by an encoded interlock canceling element on the cleaning tool only when the cleaning tool is coupled to the handle section (FIG. 4).