Apparatus for sensing openings in sheet

Details Apparatus for sensing openings in sheet Apparatus for sensing openings in sheet

1983-05-11

1986-01-07

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

200 6113, 340675, G01R 3112

Patent

active

045636338

ABSTRACT:
An apparatus and method of sensing openings in a perforated sheet by means of electrical contact between electrically conducting surfaces positioned on opposite sides of the sheet.

REFERENCES:
patent: 1407693 (1922-02-01), Heany
patent: 2748381 (1956-05-01), Baker
patent: 2873425 (1959-02-01), Huggins
patent: 2878636 (1959-03-01), Fountain
patent: 2978637 (1961-04-01), Price et al.

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