Detector with capacitance sensor for detecting object being...

Details Detector with capacitance sensor for detecting object being... Detector with capacitance sensor for detecting object being...

2008-07-15

2008-07-15

Hirshfeld, Andrew H (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S661000, C324S688000, C073S514320, C073S335040, C073S780000, C307S010100, C307S009100

Reexamination Certificate

active

07400153

ABSTRACT:
A detector for detecting an object that may be feared to or about to be caught by a closing door such as a slide door of a vehicle incorporates a capacitance sensor with a directionality characteristic in the direction of its detection surface. The detector has a main body enclosing detection electrodes, an insulating material placed in between and a shield electrode serving to provide the directionality. A protective cover may cover the shield electrode and the detection electrodes. A water-repellant finish may be provided at least on a portion of the outer surface of the main body including the detection surface for preventing water drops from remaining or becoming larger. A plurality of mutually adjacent protrusions may be formed on the protective cover with thickness decreasing in the direction of protrusion for making it difficult for water drops to remain.

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