Patent ID: 7520096
Filing Date: 2009-04-21
Classification: E04F

Abstract:
1. A sound insulating floor structure, comprising an underlying floor layer of a raised floor constructed by supporting a plurality of underlying floor panels at a predetermined height by means of a group of supporting legs installed on a foundation floor via a plurality of elastic pedestals attached to lower ends of the supporting legs, wherein at least one of said plurality of elastic pedestals is made of rubber, floor covering materials laid over the underlying floor layer, and intermediate materials laid between the underlying floor layer and the floor covering materials, characterized in that said intermediate material is a hardboard or a high density fiberboard having the flexural strength of 35-50 [N/mm 2 ], Young's modulus in flexure of 4,000-5,000 [N/mm 2 ] and the density of 0.8-1.2 [g/cm 3 ].