The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2009
Filed:
Jan. 31, 2003
Akira Teramura, Tokyo, JP;
Mitsuru Nakamura, Tokorozawa, JP;
Kenji Igarashi, Inzai, JP;
Hiroyuki Kishi, Tokyo, JP;
Akira Teramura, Tokyo, JP;
Mitsuru Nakamura, Tokorozawa, JP;
Kenji Igarashi, Inzai, JP;
Hiroyuki Kishi, Tokyo, JP;
Obayashi Corporation, Osaka, JP;
Abstract
An upper floor memberunitarily includes a floor panel portionfor forming a floor surface 12, a first wall portionextending downwards from circumferential edges of the floor panel portionand continuous in the circumferential direction, and a second wall portionspanned between opposed portions of the first wall portionand progressively increased in thickness toward the center of the floor panel portionThe floor panel portionis polygonal in shape, and the first wall portionis progressively increased in thickness toward the center of each side. The first wall portionextends downwards to the vicinity of the lower floor, and its lower end is supported by a support meansThus, a double floor structure which is inexpensive, has a high stiffness, good workability, and offers a high vibration-damping performance can be provided.