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.

Date of Patent:
May. 15, 2018

Filed:

Nov. 21, 2016
Applicant:

Mitsubishi Aircraft Corporation, Aichi, JP;

Inventors:

Shingo Kawano, Tokyo, JP;

Tomoka Mashio, Aichi, JP;

Akitaka Urano, Aichi, JP;

Shuichi Hagino, Aichi, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 1/00 (2006.01); B64D 25/00 (2006.01); B64D 13/02 (2006.01); F16K 31/22 (2006.01); F16K 31/30 (2006.01); F16K 31/00 (2006.01);
U.S. Cl.
CPC ...
B64D 25/00 (2013.01); B64D 13/02 (2013.01); F16K 31/001 (2013.01); F16K 31/22 (2013.01); F16K 31/30 (2013.01); B64C 2001/009 (2013.01); Y10T 137/2036 (2015.04);
Abstract

A water-inflow prevention device is provided by installing a closing lidfor blocking a ductof an air pressure regulating valve, which regulates air pressure inside a cabin. A buoyant bodyis attached to the disc-shaped closing lidinstalled to the ductso as to be rotatable around a rotation shaft. The buoyant bodyreceives a buoyant force from water when immersed in the water. Since the side of the closing lidin which the buoyant bodyis attached is thereby floated in the water, the closing lidautomatically rotates around the rotation shaftso as to close a ventilation port


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