Patent ID: 8876455

Claim:
A system for transferring construction materials, such as palletized roofing, upon a flat bed truck, from a first position adjacent to a headboard of the truck and upon the bed to a second position rearwardly of the headboard of the truck and elevated above the bed, comprising: a lift table extending transverse to said bed, said lift table having less width and less length than said truck flat bed, said lift table being positioned approximately in the center of the length of the bed, and said lift table maintaining the construction materials parallel to the bed during usage; said lift table having a first lowered position coplanar with the bed and a second elevated position above the bed and rearwardly from the headboard; at least one pair of legs pivotally connecting said lift table to said bed wherein said at least one pair of legs rotate from being within the bed as said lift table is in said first lowered position to being perpendicular to the bed as said lift table is in said second elevated position; an elevating assembly locating beneath the bed operatively connecting to said lift table wherein said elevating assembly raises and lowers said lift table between said first lowered position and said second elevated position; said elevating assembly having a pair of lift arms pivotally connecting to said lift table and adapted to pivotally connect to frame rails of the truck, said pair of lift arms rotating about an axis perpendicular to the length of the bed; each of said lift arms having a generally arcuate member with a first tab and an opposite second tab, said first tab is adapted to pivotally connect to frame rails of the truck and said second tab pivotally connecting to said lift table; each of said members avoiding contacting the bed as said lift table extends slightly over said bed rearwardly; each of said members having a notch proximate said second tab wherein said notch avoids contacting said lift table when in said second elevated position and is adapted to avoid contacting the truck bed when in said first lowered position; said first tabs of said lift arms operatively connecting to a power source; and said power source being one of a hydraulic motor, a pneumatic motor, an electric motor, and a hydraulic assembly wherein said hydraulic assembly includes at least one strut locating beneath said bed generally perpendicular to the length of the bed and at least one single stage ram.