Abstract: A ladder-shaped subassembly for use in assembling a subfloor for an athletic floor that is anchored, resilient, ventilatable, and DIN certifiable. Long nailing strips form the long members of the ladder-shape while shorter transverse anchor strips secured below the long members form the rung members of the ladder shape. The anchor strips have resilient pads secured to their lower face. The ladder-shaped subassemblies are positioned on a base so that the long members are abutting and the long members of the subassemblies are spaced apart from each other approximately the same distance as they are spaced from each other on the subassembly thereby creating an open channel through which ventilating air can flow between the flooring above the subassemblies and the base below the subassemblies. Anchors engage the anchor strips so as to permit the downward flexure of the floor but limit the upward rebound of the floor.

Abstract: A ladder-shaped subassembly for use in assembling a subfloor for an athletic floor that is anchored, resilient, ventilatable, and DIN certifiable. Long nailing strips form the long members of the ladder-shape while shorter transverse anchor strips secured below the long members form the rung members of the ladder shape. The anchor strips have resilient pads secured to their lower face. The ladder-shaped subassemblies are positioned on a base so that the long members are abutting and the long members of the subassemblies are spaced apart from each other approximately the same distance as they are spaced from each other on the subassembly thereby creating an open channel through which ventilating air can flow between the flooring above the subassemblies and the base below the subassemblies. Anchors engage the anchor strips so as to permit the downward flexure of the floor but limit the upward rebound of the floor.

Abstract: A parquet panel assembled of rectangular shaped wood strips as inlays and the panel is formed to have irregular end edges such that alternate rows of inlay strips are staggered in such a way that a staggered edge of one panel will interleave with the staggered edge of an adjacent panel with sufficient precision that the seams between panels are not detectable and a former which enables the positioning and joining of the inlay strips with the requisite precision needed to assemble the panel.

Abstract: An anchored resilient ventilated athletic flooring structure having vertical restraints secured to a base in parallel relationship to each other and the restraints have outwardly directed flanges, parallel spaced apart struts positioned under the flanges and transverse to the vertical restraints, a resilient upward biasing means secured under the struts so that the struts are resiliently engaged with the outward directed flanges of two adjacent vertical restraints, parallel spaced apart nailers secured transversely to the top surface of the struts and parallel to the vertical restraints, and a wood flooring secured transversely to the nailers. The spaced apart relationships or the struts and nailers provides a ventilated subfloor. The spaced apart relationships of the vertical restraints, struts and nailers permits the “tuning” of the subfloor by modifying the size and spacing of the subfloor components to effect changes in the measurable properties of the floor.

Abstract: A flooring system which has a subflooring structure that is made up of two or more layers of boards laid across each other and spaced apart from each other to create an interconnected labyrinth of void spaces in the subfloor between a finished top floor and a base, an air moving device for moving air through the labyrinth to ventilate the subfloor structure and thereby reduce potentials for damage to the flooring system due to moisture build-up under the finished floor, and a humidistat positioned in the labyrinth of void spaces to detect moisture build-up and to activate the air moving device.

Abstract: An athletic flooring system having a fixed resilient sleeper. Sleeve members are passed through bored holes in the sleeper and anchored to a base so as to restrict the horizontal movement of the sleeper while permitting the sleeper to flex resiliently in the vertical direction. The flexibility of the sleeper is further enhanced by the provision of transverse saw kerfs cut into the top and bottom surfaces of the sleeper.

Abstract: The invention is for an athletic flooring system wherein the flooring substructures are proportioned and positioned so as to give to the flooring system preferred properties in point and area elasticity. The subfloor is made up of a first and a second wood subfloor wherein the first subfloor is less continuous and more elastic than the second subfloor. The subfloors act in cooperation with a pad and with void volumes distributed in the subfloor to give the flooring system elastic properties that will render the flooring system DIN certifiable under the DIN 18032, part 2, tests.