Method of detecting protrusion of inspection object from...

Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Signalling – indicating – or display means

Reexamination Certificate

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C209S583000, C209S630000

Reexamination Certificate

active

06955264

ABSTRACT:
In order to provide a method of detecting protrusion of an inspection object from a palette improved to be capable of making highly precise detection and reducing a socket breakage ratio, an inspection object is introduced into each of a plurality of pockets provided on the surface of a palette, which in turn is transported. A reflection level of the inspection object stored in each of the plurality of pockets is measured every palette with a reflection type photoelectric sensor. The maximum value and the minimum value of the reflection level are obtained from data of every palette, for calculating a dispersion width defined by the difference between the maximum value and the minimum value. The dispersion width is compared with a previously set determination threshold, for determining whether or not the dispersion width is greater than the determination threshold.

REFERENCES:
patent: 5142677 (1992-08-01), Ehlig et al.
patent: 6263419 (2001-07-01), Boutaud et al.
patent: 6311264 (2001-10-01), Boutaud et al.
patent: 6610954 (2003-08-01), Takizawa
patent: 6651820 (2003-11-01), Takizawa
patent: 11-106047 (1999-04-01), None
patent: 1997-011869 (1998-11-01), None
patent: 1999-0054408 (2002-03-01), None

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