Patent · US Expired

Optical sorting system for a color sorting machine and process

US5579921A · kind A · utility

5Cited by

14References

16Claims

0Family size

Assignee

Elexso Sortiertechnik GmbH · DE

Inventors

Jos P. Mallant · Hamburg, DE
Rainer Schumann
Thomas Moritz · Berlin, DE
Harald C. Justus · Reinbek, DE

Key dates

Filing date	Sep 28, 1992
Grant date	Dec 3, 1996
Priority date	—
Expiry date	Sep 28, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S209/938
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to an optical sorting system for a color sorting machine. Product is irradiated with visible, infra-red or ultra-violet light by a transmitter. If there is no product in the ray path of the transmission source, all of the light falls onto a residual light receiver. If product is present, on the other hand, the light is partly or wholly scattered back to one or more product signal receivers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.