The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2010
Filed:
Jun. 14, 2007
Applicants:
Richard Macmanus, Narragansett, RI (US);
Bruce R. Pease, Coventry, RI (US);
Inventors:
Richard MacManus, Narragansett, RI (US);
Bruce R. Pease, Coventry, RI (US);
Assignee:
Hexagon Metrology AB, Nacka Strand, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 5/004 (2006.01);
U.S. Cl.
CPC ...
Abstract
A single-scale, single-drive coordinate measuring machine that compensates for hysteresis error caused by friction at the non-driven end of the bridge. The coordinate measuring machine is calibrated to estimate hysteresis effects at one or more distances from the scale. Measurements of workpieces are adjusted based on the calibration data and the distances of the carriage from the scale at the point of the measurements. The scale and the drive system may be positioned on opposite guideways.