Patent ID: 8522983
Filing Date: 2013-09-03
Classification: B07B,F16D,Y10T

Abstract:
1. A disc for releasable attachment to the shaft of a disc screen apparatus, comprising: a unitary hub of elastomeric material having a central bore and a single radial split through the hub defining a single pair of opposite end faces of the hub; a deformable, C-shaped strap embedded in the hub and having opposite ends positioned adjacent the opposite end faces of the hub; the C-shaped strap being configured flex outwardly at its opposite ends when the opposite end faces of the hub are spread apart at the radial split to allow a shaft of a disc screen apparatus to pass between the opposite end faces when the disc is installed on the shaft or removed from the shaft; a releasable fastener configured to releasably secure the hub on the shaft; the hub having a plurality of outer impacting portions integrally formed with the hub which are configured for engaging materials to be classified and propelling the materials in a conveying direction when the hub is rotated; and wherein the strap has at least one inwardly projecting post which projects through the hub and into the central bore, the at least one post being configured to engage one or more corresponding holes in a shaft when the disc is installed onto the shaft.