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).

 
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< TUNNEL-BASED METHOD OF AND SYSTEM FOR IDENTIFYING TRANSPORTED PACKAGES EMPLOYING THE TRANSMISSION OF PACKAGE DIMENSION DATA OVER A DATA COMMUNICATIONS NETWORK AND THE TRANSFORMATION OF PACKAGE DIMENSION DATA AT LINEAR IMAGING SUBSYSTEMS IN SAID TUNNEL-BASED SYSTEM SO AS TO ENABLE THE CONTROL OF AUTO ZOOM/FOCUS CAMERA MODULES THEREWITHIN DURING LINEAR IMAGING OPERATIONS

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> Anti-tracking system to ensure consumer privacy

> Magnetic field response measurement acquisition system
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