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:
Jul. 08, 2003
Filed:
Jun. 08, 2001
Renishaw PLC, Gloucestershire, GB;
Abstract
A length of scale ( ) which has a profile consisting of a sequence of troughs ( ) and crests ( ) is subjected to a process to make the shapes of the crests more regular, thus increasing and making more predictable the signal reflected from the crests on the scale. The process comprises passing a length of scale ( ) between upper ( ) and lower ( ) cylindrical rollers. The lower roller ( ) may be driven or the length of scale ( ) may be pulled through. Reference marks or identification marks may be added to the scale by appropriately marking the upper roller ( ). Alternatively, the marks may be added at an initial embossing step which imparts the troughs and crests profile to the scale or at a separate subsequent step.