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. 27, 2016
Filed:
Apr. 02, 2012
Kyouichi Nakayasu, Osaka, JP;
Yoshito Yamakawa, Osaka, JP;
Toshiaki Morii, Osaka, JP;
Masaki Inui, Osaka, JP;
Yuuichirou Kimura, Osaka, JP;
Kyouichi Nakayasu, Osaka, JP;
Yoshito Yamakawa, Osaka, JP;
Toshiaki Morii, Osaka, JP;
Masaki Inui, Osaka, JP;
Yuuichirou Kimura, Osaka, JP;
Hitachi Zosen Corporation, Osaka, JP;
Abstract
A floating flap gate to prevent water from overflowing into underground spaces, with ease in raising or lowering the door body when water level changes. The floating flap gate comprises a door body with a forward end which swings upwards or downwards in a same direction following a rise or a drop in water level, wherein an opposite end serves as a fulcrum. A rod is attached to the forward end of the door body. One end of a wire rope is attached to the rod, and the other end is attached to a counterweight via fixed pulleys. The fixed pulleys are arranged so that the counterweight is at its lowest point when the angle of inclination of the door body with respect to a horizontal plane reaches within a range from 10° to 80° during raising or lowering of the door body.