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. 09, 2018
Filed:
Oct. 10, 2014
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Kouji Furuuchi, Osaka, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
Provided is a waterproof ventilation structure including: a housing () including an inner space () and an opening portion (); a waterproof gas-permeable membrane () placed to cover the opening portion (); an electroacoustic transducing part () placed in the inner space (); a first double-faced adhesive tape () directly joining an inner surface of the housing () and an edge portion of one surface of the waterproof gas-permeable membrane () together; and a second double-faced adhesive tape () directly joining an edge portion of the other surface of the waterproof gas-permeable membrane () and the part () together. The waterproof gas-permeable membrane () has a water entry pressure of 50 kPa or more, and the first double-faced adhesive tape () includes a base including a foam material. The total thickness of the waterproof gas-permeable membrane () and the first and second double-faced adhesive tapes () and (), as measured in an uncompressed state, is preferably larger than a distance L between the inner surface of the housing () and the part () so that the foam material placed in the waterproof ventilation structure is compressed in a thickness direction.