Patent ID: 7448488
Filing Date: 2008-11-11
Classification: B65G

Abstract:
1. An abrasion sensing conveyor chain adapted for use in a conveyor line having a guide surface, said chain facilitating the judging of the degree of abrasion in rollers while installed on the line, said conveyor chain comprising a series of links having at least two spaced-apart link plates, at least one bush spanning between said two spaced-apart link plates, connecting pins connecting the link plates of each link to the link plates of adjoining links, and a roller rotatably mounted on each bush to support the chain on the guide surface of the conveyor line, at least one roller of one link of said series comprising a one-piece roller with an exposed first roller surface with an outer diameter of a required standard, and an exposed second surface with a diameter smaller than said outer diameter, said exposed second surface being disposed adjacent to and coaxial with said exposed first roller surface, whereby judging wear on the outer exposed first surface may be done by comparing the diameter of the first exposed surface with the diameter of the exposed second surface, said smaller diameter of the exposed second surface providing an abrasion limiting surface which indicates that the abrasion of the outer diameter of said first roller surface has reached the limit where the roller should be replaced.