Importance

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Abstract

A system for preventing the pinching or trapping of a human body part or foreign object by a closing panel, which may be a window, door, sunroof, hood or trunk lid, or other closure part of a transport vehicle operates by capacitively sensing the human body part, either before contact with a sensing electrode or plate, or at the time of contact with the plate. The sensing electrode may be a metal strip or wire, which can be embedded in a plastic or rubber molding strip, placed behind a piece of fascia or other trim part, or may simply be a metal element on top of the trim parts. Sensing electrodes of this sort can be prepared from conductive ink, made of adhesive backed metal foil, formed from a metal mesh strip, or simply be a wire or serpentine-laid wire. The capacitive sensing technology that follows the 'charge transfer' approach and provides immunity from environmental effects, such as moisture and humidity.

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First Claim