Industry Patents

A truss structure is suitable for supporting lighting fixtures is provided which employs wheeled leg carriages to support such trusses during transport. Each leg carriage has two legs, one extending vertically from each end of an elongated crossmember. A caster is attached proximate to the bottom of each leg. The top of each leg can be inserted in a tube fixed in a corner of the truss, elevating the truss so as to produce a volume below the truss structure into which lighting fixtures and other loads can safely project during transport. The ground clearance produced is determined by the amount that the leg is inserted in the tube and an improvement allows the retention of a mechanical stop in the tube that determines the amount of insertion allowed. Stiffeners used to brace two leg carriages, one to the other, are provided with features that allow their use in forming a cart for storing leg carriages not in use.