Patent ID: 7042210
Filing Date: 2006-05-09
Classification: G01B,G01D

Abstract:
1. A non-contact position sensor comprising: a plurality of magnets forming a magnetic circuit so that a continuous magnetic flux flows from one of said magnets, to and through another of said magnets, and back to and through said one of said magnets; at least one magnetic sensor element within said magnetic circuit; and an object to be detected, said object positioned in said magnetic circuit in a space between said one and said another of said magnets, said magnetic sensor element remains stationary while said object moves, said magnetic circuit comprising a U-shaped first magnetic body, a U-shaped second magnetic body, and said one and said another of said plurality of magnets, said one and said another of said magnets are disposed between said two U-shaped magnetic bodies arranged vertically, and said magnetic sensor element is held by said two U-shaped magnetic bodies.