Indentification of a molded container with its mold of origin

Details Indentification of a molded container with its mold of origin Indentification of a molded container with its mold of origin

1989-07-19

1990-10-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250556, G01N 904, G06K 500

Patent

active

049670700

ABSTRACT:
Apparatus for reading a mold-identifying code in the form of a plurality of surface irregularities extending in an arcuate array around the container heal concentrically with the container axis. A starwheel conveyor sequentially moves a series of containers in an arcuate path about a conveyor axis to and through a reading station. A belt positioned adjacent to the conveyor periphery engages containers at the reading station and is driven so as to rotate the containers about their central axes. A light source is imaged at the conveyor axis through container heel. A scanning mirror is positioned to receive an image of the light source transmitted through the container heel and to reflect such image onto a camera. The scanning mirror is driven as a function of conveyor rotation so as to follow a container traveling through the reading station and reflect onto the camera an image of that circumferential portion of the illuminated container heel closest to the conveyor axis.

REFERENCES:
patent: 3745314 (1973-07-01), Mathias et al.
patent: 3963918 (1976-06-01), Jensen et al.
patent: 3991883 (1976-11-01), Hobler et al.
patent: 4175236 (1979-11-01), Juvinall
patent: 4201338 (1980-05-01), Keller
patent: 4230219 (1980-10-01), Pezzin et al.
patent: 4230266 (1980-10-01), Juvinall
patent: 4644151 (1987-02-01), Juvinall

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