Patent ID: 9677927
Date: 2017-06-13
CPC Classifications: G01B,G01F

Claim:
1. In a magnetostrictive sensing instrument for sensing position of a magnetic field, and including an elongate tube having a near end and a distal end, and a magnetostrictive wire in the tube having first and second ends, the second end being operatively secured at the tube distal end, a pickup sensor comprising: a housing mounted proximate the tube near end, a pair of crystals in the housing, the crystals sandwiching the magnetostrictive wire so that interaction between an electrical pulse on the magnetostrictive wire and a magnetic field proximate the magnetostrictive wire produces a torsional wave on the magnetostrictive wire sensed by the pair of crystals, and a pair of spring elements mounted in the housing sandwiching the crystals to provide consistent contact force between the crystals and the magnetostrictive wire.