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DISPLACEMENT MEASURING TOOL | VERSCHIEBUNGSMESSINSTRUMENT | OUTIL DE MESURE DE DÉPLACEMENT

Patentnummer:EP1933109B1
IPC Hauptklasse:G01B000506
Anmelder:Mitutoyo Corporation (0)
20-1, Sakado 1-chome, ; Takatsu-ku, ; Kawasaki, Kanagawa 213-0012, JP
Erfinder:Sasaki, Kouji (0)
; c/o Mitutoyo Corp., 20-1, Sakado 1-chome, ; Takatsu-ku, Kawasaki-shi, ; Kanagawa 213-8533, JP
Anmeldung:11.12.07
Offenlegung:12.12.06
Patenterteilung:20.09.17

Abstract / Hauptanspruch
In a measuring tool (1A), following operations are carried out. In a preset operation, a displacement is detected in response to an instruction from an operating section, and the detected displacement is stored in a storage (131) as a measurement reference value (X c). In a measurement value computing operation, a measurement value is calculated based on a difference between the present displacement and the measurement reference value (Xc). A judgment operation belongs to the preset operation. In the judgment operation, a movable member (11A) is judged to be stationary relative to a stationary member (10A) when a variation of the displacement detected by the detector (12A) at an interval of a predetermined time (T1) has continuously been within a permissible range for a predetermined time. When the movable member (11A) is judged to be stationary with respect to the stationary member (10A) in the judgment operation, the displacement is stored in the storage (131) as a measurement reference value (Xc).

EP1933109B1


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