Measuring tool

Details Measuring tool Measuring tool

2007-12-10

2008-08-19

Guadalupe-McCall, Yaritza (Department: 2841)

Geometrical instruments

Gauge

Having a movable contact probe

C033S559000, C033S503000

Reexamination Certificate

active

07412779

ABSTRACT:
In a measuring tool, 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 as a measurement reference value (Xc). 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 is judged to be stationary relative to a stationary member when a variation of the displacement detected by the detector at an interval of a predetermined time (T1) has continuously been within a permissible range for a predetermined time. When the movable member is judged to be stationary with respect to the stationary member in the judgment operation, the displacement is stored in the storage as a measurement reference value (Xc).

REFERENCES:
patent: 7100429 (2006-09-01), Matsuki et al.
patent: 7207119 (2007-04-01), Eleftheriou et al.
patent: 7367132 (2008-05-01), Mitsuhashi
patent: 7376261 (2008-05-01), Noda et al.
patent: 2004/0040373 (2004-03-01), Saito
patent: Y2-02-045762 (1990-12-01), None

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