Linear scale type displacement measuring instrument

Details Linear scale type displacement measuring instrument Linear scale type displacement measuring instrument

1983-04-04

1985-01-08

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33125T, 250237G, G01B 1104

Patent

active

044920334

ABSTRACT:
In a linear scale type displacement measuring instrument capable of measuring a relative displacement between two workpieces to be measured from a relative movement between a main scale and an index scale, there are provided elastic member non-joining portions each having a pitch and a length to be determined by the material qualities of the main scale, an elongate case and elastic members to connect the main scale to the elongate case, and the length of the main scale, whereby a thermal stress acting on the main scale through the elastic members at the time of temperature change is reduced.

REFERENCES:
patent: 3815125 (1974-06-01), May et al.
patent: 4031595 (1977-06-01), Welker
patent: 4060903 (1977-12-01), Ernst
patent: 4160328 (1979-07-01), Ernst
patent: 4170829 (1979-10-01), Nelle
patent: 4250381 (1981-02-01), Yoshiike et al.

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