Patent ID: 7690270

Claim:
A load measuring transducer for measuring load applied to a structure, the structure including a deformation-producing portion configured to exhibit elastic deformation when the load is applied to the structure, the load measuring transducer comprising: a stationary gauge having electric wire patterns with a predetermined pitch formed thereon, the wire pattern repeating a predetermined number of times, and configured and adapted to receive application of AC electricity; a stationary unit having the stationary gauge formed therein; first and second moveable gauges configured to move in a longitudinal direction with respect to the stationary gauge without coming into contact with the stationary gauge, in response to elastic deformation produced in the deformation-producing portion, the first and second moveable gauges each having electric wire patterns formed thereon with the same pitch as the stationary gauge, the wire pattern repeating a predetermined number of times; and a moveable unit having the first and second moveable gauges formed therein, wherein each of the electric wire patterns of the stationary gauge, the first moveable gauge, and the second moveable gauge comprises a first portion extending in a straight line, a second portion extending in a direction perpendicular to the first portion, a third portion extending in parallel to the first portion in a direction perpendicular to the second portion, and a pattern-connecting portion extending in a direction perpendicular to the third portion, wherein the first moveable gauge is formed in the moveable unit such that the first portion of the electric wire patterns of the first moveable gauge overlaps with the first portion of the electric wire patterns of the stationary gauge, and wherein the second moveable gauge is formed in the moveable unit such that the first portion of the electric wire patterns of the second moveable gauge is displaced by ¼ pitch from the first portion of the electric wire patterns of the stationary gauge.