Scale reading apparatus

Geometrical instruments – Distance measuring – Scale reading position sensor

Reexamination Certificate

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C033S0010PT

Reexamination Certificate

active

11629466

ABSTRACT:
A scale for a scale reading apparatus has a scale track with scale marks which form an incremental scale. The scale also has a set of reference marks. The scale has at least one additional track and different combinations of markers in the at least one additional track have different functions, for example reference mark enablers and right and left limit switches.

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patent: 5010655 (1991-04-01), Rieder et al.
patent: 5651187 (1997-07-01), Affa
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patent: 2003/0145479 (2003-08-01), Mayer et al.
patent: 2004/0245442 (2004-12-01), Gruber et al.
patent: 42 00 616 (1993-07-01), None
patent: WO 03/006926 (2003-01-01), None

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