发明名称 |
REFRACTIVE TRANSPARENT SECURITY ELEMENT |
摘要 |
The invention relates to an over-head positioning device. A specific arrangement of the position measuring devices used for positioning enables errors to be prevented to a large extent due to the thermal expansion of said positioning device. In particular, the advantageous arrangement of the fixed point (15) of a scale (8) in relation to a straight spur (14) of an additional scale (10) is observed. |
申请公布号 |
EP2029371(A2) |
申请公布日期 |
2009.03.04 |
申请号 |
EP20070725470 |
申请日期 |
2007.05.23 |
申请人 |
GIESECKE & DEVRIENT GMBH |
发明人 |
DICHTL, MARIUS;RAHM, MICHAEL;CLAUSNITZER, TINA;KAEMPFE, THOMAS;KLEY, ERNST-BERNHARD |
分类号 |
B42D25/29 |
主分类号 |
B42D25/29 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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