Patent Number: 6,253,460

Title: Apparatus for position measurement and a system and a method for using the same

Abstract: An apparatus, system and method for determining the position for translating, rotating and complex motion generating shaft elements are provided. A layer may be deposited over an exterior surface of the shaft element containing a known surface geometry to provide for monitoring displacement using one or more proximity sensors. The proximity sensor detects any change in the distance between the sensor and the exterior surface geometry of the shaft element. The shaft element may alternatively be magnetized for use with magnetic sensors. The gap dimension is proportional to and/or indicative of the absolute position.

Inventors: Schmitz; Geoffrey W. (Wausau, WI)


International Classification: G01D 5/12 (20060101); G01D 5/14 (20060101); G01D 5/20 (20060101); G01D 5/16 (20060101); G01B 007/14 (); G01B 007/30 ()

Expiration Date: 07/03/2018