Patent ID: 7850026

Claim:
A lifting assembly comprising: a pair of overhead guides positioned parallel to one another; a carriage associated with each overhead guide and movable along and within the length of the said guide, each carriage having at least one mounting plate configured to travel longitudinally along its respective parallel guide by way of at least one roller rotatably mounted to the mounting plate; first sleeves rigidly fastened to each of the mounting plates; a bridge attachable to the carriages, the bridge being movable longitudinally relative to the parallel guides; a bridge sleeve fixedly connected to each end of the bridge; an attachment means associated with the bridge for supporting a lifting device, the attachment means being moveable along the length of the bridge; and a displacement arm pivotally connected to each of an interior of said first sleeves by way of a ball bearing and pivotally connected to each of the bridge sleeves by a fastener received through a displacement arm appendage positionable between the displacement arm and the bridge sleeve and extending down from ends of the displacement arm, said first sleeves being rigidly fastened to each of the mounting plates of the carriage; and a trolley located on the bridge and movable along the bridge, and wherein the attachment means is connected to the trolley.