WATER BOTTOM INSTALLED FLAP GATE

WIPO Patent Application WO/2019/044443

A1

A flap gate (1) comprises a door (2) and a mooring (31). The door (2) rises up or drops down by way of a movable end (24) pivoting about a fulcrum constituted by a support end (23) disposed on the water bottom. The mooring (31) anchors the door (2) to the water bottom. The door (2) comprises a first buoyancy chamber (25), a second buoyancy chamber (26), and a buoyancy chamber connector (27). The first buoyancy chamber (25) is disposed between the movable end (24) and the support end (23). The second buoyancy chamber (26) is disposed between the first buoyancy chamber (25) and the support end (23). The buoyancy chamber connector (27) connects the first buoyancy chamber (25) and the second buoyancy chamber (26) in a manner in which both chambers remain openable. The buoyancy chamber connector (27) is released in a state in which the door (2) has dropped down further than an anchored state of being anchored by the mooring (31). In this way, the door (2) that has dropped down from a risen state can be reset to the anchored state quickly.

MORII TOSHIAKI (JP)
NAKAYASU KYOICHI (JP)
KIMURA YUICHIRO (JP)
MIYAMOTO KUNIE (JP)

PCT/JP2018/029816

March 07, 2019

August 08, 2018

Click for automatic bibliography generation  

HITACHI SHIPBUILDING ENG CO (JP)

E02B7/40

JP2011241543A	2011-12-01
JP2010133095A	2010-06-17
JP2003227125A	2003-08-15
JP2011111722A	2011-06-09
JP2014009560A	2014-01-20
JPS5325182B2	1978-07-25
JPS5016087B1	1975-06-10
JP2003239261A	2003-08-27
JP2000144696A	2000-05-26
US20160369469A1	2016-12-22

MATSUSAKA, Masahiro et al. (JP)

View/Download PDF      PDF Help

Previous Patent: PLUGGABLE OPTICAL MODULE AND OPTICAL COMMUNICATION SYSTEM

Next Patent: LAMINATED FILM AND METHOD FOR MANUFACTURING LAMINATED FILM