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:
Dec. 13, 2022
Filed:
Oct. 11, 2019
Nitto Denko Corporation, Ibaraki, JP;
Daisuke Kitagawa, Osaka, JP;
Satoshi Nishiyama, Osaka, JP;
Youzou Yano, Osaka, JP;
Tomoyuki Kasagi, Osaka, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
A ventilation housing of the present disclosure includes: a housing; and a ventilation assembly. The housing includes a tubular projection extending to project from an outer surface and internally having a first space communicating the inside and the outside of the housing. The ventilation assembly includes: an internal member being a tubular body having an opening at a first end portion and an opening at a second end portion; a gas-permeable membrane covering the opening at the first end portion of the internal member; and an external member being a tubular body having a bottom, the external member being joined to the internal member with the internal member inserted in the interior of the external member from the first end portion side. The ventilation assembly is fixed to the projection with the projection inserted in the opening at the second end portion of the internal member to make an inner peripheral surface of the internal member and an outer peripheral surface of the projection abut each other. The ventilation assembly has a second space serving as a ventilation path connecting the gas-permeable membrane and the outside of the ventilation assembly in the inside of the internal member, the inside of the external member, and/or an interspace between the internal member and the external member joined together. A height Hof the internal member is 6 to 10 mm. A ratio of the height Hof the internal member to a height Hof the projection is 1.00 to 1.70. The ventilation housing of the present disclosure exhibits excellent performance in terms of moisture permeation between the inside and the outside of the housing and is capable of reducing dropping of the ventilation assembly from the projection of the housing.