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Curvature probe and method

  • US 4,715,128 A
  • Filed: 12/19/1985
  • Issued: 12/29/1987
  • Est. Priority Date: 12/19/1985
  • Status: Expired due to Fees
First Claim
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1. In a curvature probe:

  • an axially extending flexible shaft, a plurality of axially spaced guide members mounted on the flexible shaft and being movable axially of the shaft, means between adjacent ones of the guide members for maintaining the guide members in a spaced relationship, two pairs of axially extending sensing wires positioned in quadrature about the shaft with the two wires in each pair being positioned on opposite sides of the shaft, said wires passing freely through axially aligned openings in the guide members and being free to move relative to each other in an axial direction upon bending of the probe, and means responsive to the relative axial positions of the two wires in each pair for providing an output signal corresponding to the curvature to which the probe is bent.

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