Patent ID: 7459904

Claim:
A position sensor assembly, comprising: a primary non ferromagnetic coil assembly including a coil form formed of a non ferromagnetic material, having an outer surface against which at least a portion of a coil is adapted to be wound, and having said coil wound around said outer surface, said primary non ferromagnetic coil assembly being coupled to a movable object of interest, and being movable according to movement of the movable object of interest; at least first and second stationary coil assemblies, each including a non ferromagnetic coil form, having an outer surface against which the coil is adapted to be wound, and each having a coil wound against said outer surface, said first and second stationary coil assemblies being located adjacent to said primary non ferromagnetic coil assembly; and an electronics portion, producing electrical current to one of said coil assemblies, and receiving an induced signal from the other of said coil assemblies, and determining a position of said primary non ferromagnetic coil assembly relative to said first and second stationary coil assemblies from said induced signal, said determining being capable of a determination on the order of a micron resolution or better than a micron resolution, wherein said coil forms of said coil assemblies are made from a non ferromagnetic adhesive material, which forms the surface against which said coils are wound, and said non-ferromagnetic adhesive and the windings of the coil together form said coil forms.