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:
Jun. 18, 2013
Filed:
Jan. 20, 2003
Applicants:
Alexander David Scott Ellin, Gloucestershire, GB;
James Reynolds Henshaw, Gloucestershire, GB;
Inventors:
Alexander David Scott Ellin, Gloucestershire, GB;
James Reynolds Henshaw, Gloucestershire, GB;
Assignee:
Renishaw PLC, Wotton-Under-Edge, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 26/00 (2006.01); B23K 26/36 (2006.01); G01B 15/00 (2006.01); G01D 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus is disclosed for producing precision marks () for a metrological scale in the form of a stainless steel ribbon (). A laser () is used to produce ultra-short pulses, which have a fluence at the ribbon such that ablation takes place. The laser light can be scanned via scanner () and the pitch of the marks () can be controlled. The ablative technique causes little thermal input and improves the accuracy of the scale.