Patent ID: 6606914
Filing Date: 2003-08-19
Classification: G01G,G01L

Abstract:
A load sensor comprising:an elastic tube, at least one part of which, in the circumferential direction, is a conductive portion; an elongated insertion member that has longitudinally arranged first and second electrode members provided at a distance, and that is inserted into the elastic tube; and envelope members that are provided longitudinally, at a predetermined distance, to enclose the insertion member, and that, together with the insertion member, are inserted into the elastic tube to separate the insertion member from the elastic tube, wherein, while the elastic tube is in the normal state, the first and the second electrode members are so positioned, at a distance from the conductive portion of the elastic tube, that when an external load bends the elastic tube an electrical connection is established between the first and the second electrode members, with or without the conductive portion of the elastic tube.