Patent ID: 6827334
Filing Date: 2004-12-07
Classification: B66C,B66D

Abstract:
A hoist apparatus comprising:a frame; a first hoist drum mounted to the frame for rotation about a first drum axis; a first portion of hoist rope single reeved around the first hoist drum; a second hoist drum mounted to the frame for rotation about a second drum axis, the second drum axis being spaced from and substantially parallel to the first drum axis; a second portion of hoist rope single reeved around the second hoist drum; and a device for engaging a load, the device including a main portion, a first sheave mounted to the main portion and rotatable about a sheave axis, and a second sheave mounted to the main portion and rotatable about the sheave axis, the sheave axis being sheaved from and substantially parallel to the first drum axis, the first portion of hoist rope being reeved around the first sheave, and the second portion of hoist rope being reeved around the second sheave, such that rotation of the drums raises and lowers the device, wherein the second hoist drum is axially offset with respect to the first hoist drum.