Patent ID: 7891031
Filing Date: 2011-02-22
Classification: E04H

Abstract:
1. A deck construction, comprising: a rigid, unitary platform; a plurality of wheels rotatably mounted to the bottom side of the platform in regular spacing along opposing, lateral ends of the platform; a pair of tracks, each mounted on a respective ledge, the ledges being formed on opposite sides of an open space located beneath the platform, the wheels rollably engaging the tracks to allow horizontal movement of the platform over the open space; a plurality of racks, each rack mounted one of the opposing, lateral ends of the platform; a plurality of drive mechanisms mounted on the opposite sides of the open space along the ledges, below the level of the surrounding surface area, in driving engagement with the racks; and a plurality of sources of rotary power located on the opposite sides of the open space and operatively connected to the drive mechanisms, for rotating the drive mechanisms to cause the platform to move horizontally in either direction along the tracks.