Patent ID: 9593930
Date: 2017-03-14
CPC Classifications: B24B,F22B,F28F,F28G,G01B,G01N,G21C,G21D,Y02E

Claim:
1. A probe apparatus comprising a surface-following probe, said surface-following probe comprising: (a) a probe body, (b) one or more shoe pairs, wherein each shoe pair consists of a biased shoe attached to said probe body and a fixed shoe attached to said probe body, (c) a target mounted on the biased shoe of each of said one or more shoe pairs, wherein said target comprises a material that is conductive and ferromagnetic, conductive and non-ferromagnetic, or non-conductive and ferromagnetic, and (d) a conductor coil fixed to said body to allow relative movement of said biased shoe electromagnetically coupled with each target to produce a voltage output indicative of motion of the biased shoe relative to probe body (e) an eddy-current probe coupled to said probe body.