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:
Jan. 10, 2017
Filed:
Mar. 04, 2011
Kevyn Barry Jonas, Clevedon, GB;
Geoffrey Mcfarland, Wotton-under-Edge, GB;
Peter Russell Hammond, Warkworth, GB;
Anthony Brown, Alnwick, GB;
Kevyn Barry Jonas, Clevedon, GB;
Geoffrey McFarland, Wotton-under-Edge, GB;
Peter Russell Hammond, Warkworth, GB;
Anthony Brown, Alnwick, GB;
RENISHAW PLC, Wotton-under-Edge, GB;
METROLOGY SOFTWARE PRODUCTS LIMITED, Alnwick, GB;
Abstract
An error correction method for coordinate positioning apparatus is described. The method comprises (i) taking a first data set comprising one or more first data values, each first data value describing a position on the surface of a first object, (ii) taking a second data set comprising one or more second data values, each second data value describing a position on the surface of the first object, and (iii) calculating an error map comprising one or more error values, each error value describing a positional difference between the surface as described by the first data set and the surface as described by the second data set. The surface normal of the first object is known at each position described by each first data value and step (iii) comprises calculating each error value by determining the positional difference substantially in the direction of the known surface normal.