Patent ID: 6753680
Filing Date: 2004-06-22
Classification: G01B,G01D,H03K

Abstract:
A position sensor for sensing linear or radial position, comprising:at least for magnets, each of said at least four magnets producing a magnetic flux; a first ferrous plate including a first side and a second side, said first ferrous plate having two of said at least four magnets located along said first side at spaced locations along said first ferrous plate, said two magnets being oriented such that a north pole of one of said two magnets is directed toward said first ferrous plate and a south pole of an other of said two magnets is directed toward said first ferrous plate; a second ferrous plate including a first side and a second sides said second ferrous plate having an other two of said at least four magnets located along said first side at spaced locations along said second ferrous plate, said two magnets being oriented such that a north pole of one of said two magnets is directed toward said second ferrous plate end a south pole of an other of said two magnets is directed toward said second ferrous plate, said first ferrous plate and said second ferrous plate being generally parallel and spaced apart; and at least one magnetic flux responsive device disposed between said second side of said first ferrous plate and said second side of said second ferrous plate, said at least one magnetic flux responsive device at least partially responsive to said magnetic flux from said at least four magnets.