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. 02, 2010
Filed:
Dec. 15, 2005
Zenzo Yamaguchi, Kobe, JP;
Ichiro Yamagiwa, Kobe, JP;
Toshimitsu Tanaka, Kobe, JP;
Hiroki Ueda, Kobe, JP;
Kensuke Tsubota, Tokyo, JP;
Zenzo Yamaguchi, Kobe, JP;
Ichiro Yamagiwa, Kobe, JP;
Toshimitsu Tanaka, Kobe, JP;
Hiroki Ueda, Kobe, JP;
Kensuke Tsubota, Tokyo, JP;
Kabushiki Kaisha Kobe Seiko Sho, Hyogo, JP;
Abstract
A sound absorbing structure having excellent in sound absorbing performance, which is capable of achieving 0.4 or higher in the sound absorbing coefficient even in the case where a perforated panel is a thin plate such as aluminum foil within a range where a reduction in the weight of a vehicle body is not impaired and through holes have a large hole diameter in order to make the processing of providing a large number of through holes in the perforated panel. The sound absorbing structureis the sound absorbing structurefor suppressing noise generated on a sound source side, which is equipped with: a perforated panelhaving a large number of through holesand a fiber material, which are provided so as to face the sound source side and provided so as to overlap with each other; and an air layerprovided behind the perforated panel, in which the density and the thickness of the fiber materialand the hole diameter and the aperture rate of the through holesof the perforated panelseverally have a specific relationship.