Patents Examined by D. Pretlow
  • Dynamic artefact comparison
    Patent number: 7079969
    Abstract: A method of inspecting a series of workpieces using a coordinate measuring apparatus, comprising the steps of: measuring a calibrated artefact on a coordinate measuring apparatus at a fast speed 28; generating an error map corresponding to the difference between the calibrated artefact and the measured artefact 30; measuring subsequent workpieces at the same fast speed 34 and correcting the measurements of the subsequent workpieces using the error map 36. The artefact may be one of the workpieces.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: July 18, 2006
    Assignee: Renishaw PLC
    Inventors: Benjamin Roller Taylor, Geoffrey McFarland