Apparatus for measuring sizes of articles

Optics: measuring and testing – Dimension – Width or diameter

Reexamination Certificate

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C250S559120, C702S167000

Reexamination Certificate

active

10780871

ABSTRACT:
An apparatus for measuring sizes of articles including a light projecting device for projecting light toward an article placed on a stationary transparent plate from one side of the plate, a photo-sensor device arranged on the other side of the plate and having plural photo-detectors arranged in array in Y direction to receive light projected from the light projecting device and impinging upon the photo-sensor device without being interrupted by the article, a driving device for reciprocally moving the light projecting device and photo-sensor device relative to the article in X direction perpendicular to the Y direction, and a shifting device for shifting the photo-sensor device in the Y direction between first and second positions which are mutually separated by a half of a photo-detector array.

REFERENCES:
patent: 4192613 (1980-03-01), Hammar
patent: 4773029 (1988-09-01), Claesson et al.
patent: 4914307 (1990-04-01), Kanev
patent: 5113591 (1992-05-01), Connelly
patent: 5251156 (1993-10-01), Heier et al.
patent: 5469262 (1995-11-01), Keen et al.
patent: 6380503 (2002-04-01), Mills et al.

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