Abstract: A sub-floor assembly having sub-floor panels that are adapted to be integrally overlapped while providing clearance for channel sections when the floor deflects under load. Clearance for the channel sections may be achieved by providing pockets in an upper layer of a first sub-floor panel in the area where the channel sections engage a second sub-floor panel with which the first sub-floor panel is in overlapping engagement.

Abstract: A floor support assembly including first and second subfloors is disclosed. The first subfloor is supported over a substrate by a plurality of pads. Each pad is housed in a corresponding recess formed in the first subfloor. Each recess includes a ridge that is in contact only with its respective pad when the floor is in a lightly loaded position. In a more aggressively athletically loaded state, the pad contacts the ridge and a portion of the top of the recess. In a non-athletic fully loaded state, the first subfloor plate near the load rests on the substrate. The second subfloor is located above the first subfloor and is supported by the first subfloor. A method of installing the same is also disclosed.

Abstract: A sub-floor assembly having sub-floor panels that are adapted to be integrally overlapped while providing clearance for channel sections when the floor deflects under load. Clearance for the channel sections may be achieved by providing pockets in an upper layer of a first sub-floor panel in the area where the channel sections engage a second sub-floor panel with which the first sub-floor panel is in overlapping engagement.

Abstract: A resilient portable sports floor system, more particularly one which is formed of a plurality of components which may be easily interconnected to form an integrated sports surface. The floor system includes a plurality of floor panels, each floor panel including a playing surface and four sides, at least one floor panel attachment mechanisms on each side of the floor panel, and a drive mechanism attached to each of said floor panels and attached to a floor panel attachment mechanism, the drive mechanism including a threaded rod. When the threaded rod is rotated it moves the drive mechanism with respect to the floor panel.