Method and system for sensing an identifying means

Details Method and system for sensing an identifying means Method and system for sensing an identifying means

1974-12-23

1976-06-15

Woodiel, Donald O.

Measuring and testing

With fluid pressure

Dimension, shape, or size

137 83, G01B 1322

Patent

active

039629031

ABSTRACT:
A metallized ceramic substrate has a slot provided in one quandrant on one side thereof. The substrate is disposed in receiving means having either two or four restrictive openings therein and over which the substrate is disposed. Fluid pressure is supplied from a pressure source in a separate path to each of these openings. The opening, which has the slot disposed thereover, has a different pressure in its path from the pressure source than the other openings so that the location of the slot, if it is in the surface of the substrate disposed next to the openings, can be ascertained.

REFERENCES:
patent: 2897670 (1959-08-01), Bentley
patent: 3115037 (1963-12-01), Forrester
patent: 3201985 (1965-08-01), Williams
patent: 3470733 (1969-10-01), Rule et al.
patent: 3496744 (1970-02-01), Mizuno et al.

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