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:
Oct. 05, 1999
Filed:
May. 15, 1996
Applicant:
Inventors:
Yasuyuki Asahara, Yokosuka, JP;
Keijiro Iwao, Yokohama, JP;
Assignee:
Nissan Motor Co., Ltd., Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04B / ;
U.S. Cl.
CPC ...
181286 ; 181292 ;
Abstract
A noise insulating wall structure includes tubular extensions which extend into a space defined between spaced insulating plates. The extensions formed on the lower of the two plates are formed with openings which allow water, which accidentally finds its way into the interior of the panel, to drain out and thus not effect the sound attenuating performance of panel. The drain openings have an area which is determined based on a ratio of the area of the opening to the total circumferential area (including the area of the opening) of the extension.