Device for determining the exact position of two members linearl

Details Device for determining the exact position of two members linearl Device for determining the exact position of two members linearl

1978-03-24

1980-01-22

Shepperd, John W.

Geometrical instruments

Area integrators

Electrical

33125A, 33125C, 356373, G01B 1104

Patent

active

041842626

ABSTRACT:
An apparatus is disclosed for determining the position of one of a pair of linearly displaceable members relative to the other, including a scale secured to one member parallel with the axis of linear displacement, and an electrooptical scanning head connected with the other member for pivotal movement about an axis transverse to the axis of linear displacement. The scanning head is spring-biased toward engagement with the scale, whereby the scanning head is pivoted in accordance with the configuration of the correction ruler.

REFERENCES:
patent: 2995826 (1961-08-01), Brault
patent: 3854823 (1974-12-01), Loxham
patent: 4095903 (1978-06-01), Feichtinger

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