Optics: measuring and testing – Inspection of flaws or impurities – Transparent or translucent material
Patent
1977-05-02
1979-10-16
Corbin, John K.
Optics: measuring and testing
Inspection of flaws or impurities
Transparent or translucent material
250578, 356435, G01N 2132
Patent
active
041711580
ABSTRACT:
An electronic system for detecting faults or flaws in individual items of a stream of items has a single row of light sensors and a light source and detects the presence of an item between source and detectors, establishes a reference level for comparison that is a function of the individual item under inspection, and produces a fault signal from any individual sensor having a change in incident light that is a predetermined amount greater than the reference level and which occurs within a predetermined adjustable portion of the item passing the sensors.
REFERENCES:
patent: 3005548 (1961-10-01), Flanders et al.
patent: 3818223 (1974-06-01), Gibson et al.
patent: 3835332 (1974-09-01), Bridges
patent: 4025422 (1977-05-01), Malvick et al.
Beckwith Carl M.
MacDonald Wayne W.
Malvick Arnold O.
Corbin John K.
Gregg Edward B.
Hendricson Alvin E.
Punter Wm. H.
Tri Valley Growers
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