Patent ID: 8112912
Filing Date: 2012-02-14
Classification: E02F

Abstract:
1. A dump block, comprising: a housing comprising two side sections, each side section comprising an opening extending therethrough; a sheave with a peripheral groove shaped to receive a rope, the sheave having a central bore; a bearing assembly positioned within the central bore; and a sheave pin that supports the sheave, the sheave pin having a first end with a shoulder portion, a second end with a threaded portion, a support section of a predetermined length extending between the first and second ends, and a fastener coupleable to the second end at the threaded portion, wherein when the sheave pin is assembled with the housing, the first and second ends of the sheave pin extend into the respective openings in the side sections, wherein the bearing assembly is installed within the sheave and adjusted by urging the sheave pin to translate in the direction of the second end and securing the fastener to the threaded section at a location between the two side sections, wherein the bearing assembly comprises an outer surface and the sheave comprises an inner surface that defines the central bore, and the outside surface of the bearing assembly is secured to the inner surface of the sheave with an interference fit, and wherein the inner surface of the sheave comprises first and second indentations to facilitate positioning of the bearing assembly within the central bore, and a first ring is positioned within the first indentation and a second ring is positioned within the second indentation, and at least a portion of the bearing assembly is positioned between the first and second rings.