Patent ID: 9321616
Filing Date: 2016-04-26
CPC Classification: A62B,B66B,B66C,E06C

Claim Text:
1. A lifting system comprising: a pulley attached to a structure; a lifting cable looped around the pulley; a load attached to a hook block that is attached to the looped lifting cable, the load being a container configured to be suspended from the looped lifting cable; a hoist winch on a mobile vehicle located in an area next to a base of the structure, the hoist winch being operable upon the looped lifting cable to raise the attached load and to lower the attached load, the container configured to transfer persons and equipment between the area next to the base of the structure and a level of the structure that is below the pulley and above the vehicle; and a device attached directly to the load or directly to the hook block, the device is attached to the looped lifting cable via an adjuster cable and a traveler pulley, the traveler pulley being attached to the adjuster cable which is separate from the lifting cable, the traveler pulley configured to automatically ride along substantially an entire extent of a length of the lifting cable defined between the pulley and the hoist winch, as a direct result of the load being raised by the hoist winch only or lowered by the hoist winch only, the load positioned between the structure and the traveler pulley, wherein the device is configured to a) pull in the adjuster cable to thereby pull the traveler pulley and the load sideways towards each other, and b) let out the adjuster cable to allow the load to move sideways away from the traveler pulley.