发明名称 |
An apparatus for determining the position of a movable mechanical element and method of marking a mechanical element |
摘要 |
<p>A mechanical element comprising an optically readable marking, the optically readable marking comprising a surface having a first reflectivity and a plurality of areas having a second reflectivity, characterised in that: said areas having a second reflectivity have a width which is generally constant in a direction parallel to the direction of movement of the mechanical element. <IMAGE></p> |
申请公布号 |
EP0947805(B1) |
申请公布日期 |
2008.05.07 |
申请号 |
EP19990106641 |
申请日期 |
1999.03.31 |
申请人 |
J.C. BAMFORD EXCAVATORS LIMITED |
发明人 |
SHEPHERD, JOHN;BRASSINGTON, ROGER WILLIAM;MOORE, IAN ARNOLD;WHATLEY, MARK LEWIS |
分类号 |
B25H7/04;G01D5/249;F15B15/14;F15B15/28 |
主分类号 |
B25H7/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|