Magna Closures Inc.

Rade Isailovic

Liviu Bolbocianu

Mirko Pribisic

Thomas Mellary

Alex Porat

In an aspect, a pinch sensor is provided, comprising: an elongate non-conductive casing enclosing first, second, and third elongate conductive electrodes; the first and second electrodes being separated by a portion of the casing, a capacitance between the first and second electrodes changing when an obstacle approaches the first electrode to provide a proximity indication of the obstacle to the pinch sensor; and, the second and third electrodes being separated by an air gap formed in the casing, a resistance between the second and third electrodes changing when the second and third electrodes come into contact upon compression of the casing by the obstacle to provide a contact indication of the obstacle with the pinch sensor.

Wide activation angle pinch sensor

Wide activation angle pinch sensor section

A resistive pinch sensor utilizing electrically conductive wires encapsulated in a resiliently deformable casing. A pinch is detected when one of the wires, which is normally separated by an air gap within the casing, contacts another wire lowering the electrical resistance therebetween. The described pinch sensors have wide activation ranges or angles. Tri-lobed designs provide wide activation range by incorporating at least three electrically-conductive conduits that are substantially equidistantly spaced circumferentially along the inner wall of a tubular casing. One of the conduits, or optionally an axially arranged electrically-conductive core may function as the reference element. Coaxial designs provide wide activation range by incorporating a central electrically-conductive core and a coaxial electrically-conductive tubular outer sheath that are normally spaced apart by at least one non-conductive spacer.

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North York, Canada

Rade Isailovic