Patent ID: 9479134
Filing Date: 2016-10-25
CPC Classification: G01D,H03H

Claim Text:
1. A position detecting system comprising: a sensor having a coil, the coil having a longitudinal axis, the coil to generate a time varying magnetic field, the time varying magnetic field having a plurality of magnetic field vectors that intersect a sensing domain area of a plane, the plane being substantially orthogonal to the longitudinal axis, each magnetic field vector that intersects the sensing domain area having a normal component that lies orthogonal to the plane and a tangent component that lies parallel to the plane, a magnitude of the normal component being substantially greater than a magnitude of the tangent component, an orientation of the normal component matching an orientation of the time varying magnetic field at an intersection of the longitudinal axis and the plane; a target being movable within the plane, a portion of the target always lying within the sensing domain area of the plane; and a support structure connected to the sensor and the target.