Reset circuit for zero force touch probe

Details Reset circuit for zero force touch probe Reset circuit for zero force touch probe

1981-03-12

1983-04-26

Little, Willis

Geometrical instruments

Area integrators

Electrical

33174L, 331795R, G01B 728

Patent

active

043808735

ABSTRACT:
A co-ordinate measuring system for determining the relative measurements of an object is disclosed. The system utilizes a probe which has a plurality of faces which are interconnected so as to form two parallel "X" co-ordinate probe surfaces (12) and two parallel "Y" co-ordinate probe surfaces (14). At the instant the probe contacts a surface on the object being measured, an electrical circuit is completed through the probe to ground potential via the object, causing the measurement to be displayed on a visual display device (20 or 22). In this manner, measurements along the "X" and "Y" co-ordinates can be made and recorded at the instant the probe contacts the respective surfaces. An automatic unlatching feature is provided wherein the probe must be a predetermined distance from both the "X" and "Y" surfaces before the system automatically resets.

REFERENCES:
patent: 3499226 (1970-03-01), Hopkins
patent: 3945126 (1976-03-01), Bloch
patent: 3950858 (1976-04-01), Donner et al.
patent: 4166323 (1979-09-01), Maag

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