A Pulley which comprises a Cube that defines an Axis, an edge that defines at least one Slot, two plates oriented perpendicular to the Axis, and a Plurality of tubular Reinforcement members which extend between the plates; and a Mining Shovel.

摘要

A Pulley which comprises a Cube that defines an Axis, an edge that defines at least one Slot, two plates oriented perpendicular to the Axis, and a Plurality of tubular Reinforcement members which extend between the plates; and a Mining Shovel.