Device for reading displacements of a movable member

Details Device for reading displacements of a movable member Device for reading displacements of a movable member

1976-05-03

1978-02-14

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347M, 250231SE, 235454, 235 92MP, H03K 1318

Patent

active

040742580

ABSTRACT:
A device for reading out the position of a movable member comprising a sc carried by that member and having equidistant coded references. Each reference is different from the others. A stationary optical system forms the image of a portion of the scale on a fixed detector. The detector comprises a linear matrix of photo detectors regularly distributed at predetermined intervals and associated with electronic means which identifies the coded reference whose image is formed on the matrix and reads out the serial number of the photo element on which the leading edge of the coded reference is formed.

REFERENCES:
patent: 3648276 (1972-03-01), Schuman
patent: 3794812 (1974-02-01), Bryant
patent: 3913095 (1975-10-01), Dlugos

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