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. 23, 2016
Filed:
Sep. 07, 2012
Masaki Inui, Osaka, JP;
Yuuichirou Kimura, Osaka, JP;
Kyouichi Nakayasu, Osaka, JP;
Toshiaki Morii, Osaka, JP;
Yoshito Yamakawa, Osaka, JP;
Masaki Inui, Osaka, JP;
Yuuichirou Kimura, Osaka, JP;
Kyouichi Nakayasu, Osaka, JP;
Toshiaki Morii, Osaka, JP;
Yoshito Yamakawa, Osaka, JP;
HITACHI ZOSEN CORPORATION, Osaka, JP;
Abstract
The present invention utilizes a vertically upward force of a water when a tsunami smashes into a building to close openings that exist in an elevated location such as air supply and exhaust ducts, powerlessly and without a manual operation. The present invention serves as a disaster prevention panel which closes an openingdisposed in a wall of a building. A door bumperis disposed on an outer peripheral wall of the opening, and side door bumpersare disposed on both sides of the door bumper. A door body, which closes the openingand which has a specific gravity lower than a seawater, is attached between the side door bumperson both sides so as to freely swing upwards, with a lower portion of the door bumperserving as a fulcrum.