According to the US Patent & Trademark Office, the invention relates to a “system for manipulating a transport container cover using a gantry assembly. The gantry assembly supports a cover assembly for housing a cover to be deployed over a load. The gantry assembly has a three telescoping sections including a base section fixed with respect to a truck, a top section fixed to the cover assembly and a middle section therebetween. The sections are adjustable to a height such that the cover will extend above the transport container and the load therein.”

An abstract of the invention, released by the Patent Office, said: “A lift mechanism aids the movement of the gantry assembly upward along with the cover assembly. The sections telescope from one another as the lift mechanism rises, thereby allowing the cover to be raised several feet above the truck cab or container.”

The inventor was issued US Patent Number 6,896,312 on May 24 2005.

The patent has been assigned to Pioneer Consolidated Corp., North Oxford, Massachusetts.

The original application was filed on April 14 2004.