Patent ID: 6212962
Filing Date: 2001-04-10
Classification: B07C,G01N,G06T

Abstract:
A method of measuring at least one unknown characteristic of objects being conveyed along an object pathway on a conveyor comprising:(a) providing an enclosure assembly located adjacent said conveyor, said enclosure assembly defining an enclosure assembly interior located within said enclosure assembly and an enclosure assembly exterior located outside of said enclosure assembly;(b) pressurizing said enclosure assembly interior to a pressure higher than that of said enclosure assembly exterior;(c) providing a passageway extending between said enclosure assembly exterior and said enclosure assembly interior;(d) providing a flow of air from said enclosure assembly interior to said enclosure assembly exterior through said passageway;(e) providing an image generating device in said enclosure assembly interior;(f) aiming said image generating device through said passageway at a location within said object pathway; and(g) restricting said flow of air through said passageway by locating said image generating device in proximity to a portion of said enclosure assembly adjacent said passageway.