Patent ID: 7594360

Claim:
The system for supporting a large overhead structural member for stable movement with respect to an underlying structure, comprising: first and second transport mechanisms, each of which is constructed and arranged to permit the large overhead structural member to move in a predetermined path with respect to the underlying structure, said transport mechanism comprising a single trolley rail on the underlying structure with no additional rail and a plurality of rail follower wheels on the large overhead structural member that are adapted to ride on said single trolley rail; and a lateral release system for each of said transport mechanism, interposed between said rail follower wheels and the large overhead structural member, for maintaining the transport mechanism in a predetermined orientation while simultaneously permitting a limited amount of movement of the large overhead structural member in a direction that is nonparallel to said predetermined path, wherein said system transmits a very small side load to said single trolley rail with no need for additional lateral reinforcement, said lateral release system comprising a linear slide bearing.