Metrological scale
US5088209A · kind A · utility
6Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Apr 19, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2001/383
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An optical metrological scale produced by a rolling method, to give a profiled upper scale surface which is imparted by an embossing roller. To prevent uneven strains, which could affect the pitch of the scale, the support roller has a similar embossing profile, so that the lower side of the scale is also given a profiled surface. The embossing roller is freely rotatable, while the support roller is driven.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.