Patent ID: 8033390
Filing Date: 2011-10-11
Classification: B65G

Abstract:
1. A wear resistant, heat resistant conveyor chain comprising a pair of right and left spaced inner plates having bush holes, a pair of right and left spaced outer plates having pin holes, bushes press-fitted into said bush holes, a heat resistant roller rotatably fitted onto each bush, a connecting pin rotatably inserted through said bush and into said pair of right and left spaced outer plates, said pins and outer plates interconnecting said inner plates with said adjacent links in a longitudinal direction of the chain by a press-fit of both ends of said connecting pin into said pin holes, wherein said chain includes a wear resistant, heat resistant sleeve-shaped hollow cylindrical spacer between said heat resistant roller and said bush, and integrally connected to an inner circumferential surface of said heat-resistant roller, said spacer having a length less than the spacing of said inner plates and having exposed ends with spacing from the inner side surfaces of said inner plates, said exposed ends protruding beyond each of said end surfaces of said heat resistant roller and spaced from said inner side surfaces of the inner plates to maintain said spacing between the end surfaces of said heat resistant roller and said inner side surfaces of said pair of right and left inner plates.