Displacement detector

Details Displacement detector Displacement detector

1991-10-21

1994-03-01

Noland, Tom

Measuring and testing

Instrument mechanism or transmission

33819, 33571, G01B 322, G01B 318, G01D 1118, G01D 308

Patent

active

052897290

ABSTRACT:
A displacement detector which supports either the main scale or the grid to move in a direction perpendicularly intersecting the relative movement direction of the spindle, and which has a spring for pushing one of the main scale and grid toward the other, protrusions for maintaining a predetermined clearance between the urged one of the main scale and grid and the other, and a clearance limiting device for limiting a displacement of the urged one of the main scale and grid from the other to a limited clearance distance to prevent a loss of measuring continuity.

REFERENCES:
patent: 3668782 (1972-06-01), Hanft
patent: 4024767 (1977-05-01), Kampf
patent: 4114280 (1978-09-01), Rucinski
patent: 4129039 (1978-12-01), Pignato
patent: 4578868 (1986-04-01), Sasaki et al.
patent: 4695720 (1987-09-01), Rieder et al.
patent: 4765064 (1988-08-01), Maeda

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