Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Zhimin Lu0
Date of Patent
March 7, 2006
0Patent Application Number
098703930
Date Filed
May 29, 2001
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method and apparatus is provided for determining workpiece drift from its nominal or intended position. The apparatus includes two proportionate sensors, each of which gives an output reading that depends upon how much of the sensor beam is blocked by an edge of the workpiece. A computer can calculate positional drift based upon these readings. Also disclosed is a method for aligning proportionate sensors to be parallel to one another.
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