Title:
FLAP GATE
Document Type and Number:
Japanese Patent JP2015105566
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a flap gate for extremely reducing water leakage to the internal water side of external water, hardly generating noise, and without disturbing even a water flow.SOLUTION: A flap gate comprises a door body 7 rockably supported in the internal-external water directions in a drain port 2 of an irrigation channel 1 and freely rockable between a lower rocking position D for closing the drain port 2 in the internal water direction by separating a drain clearance S and upper rocking positions U1-U3 for opening the drain port 2 in the external water direction, and comprises an internal water side link 4 rockably connected by an internal water side first connection shaft 5 to a support girder 3 provided in the irrigation channel 1 and installing a balance weight 6 in an upper end part on the external water side more than an internal water side first connection shaft 5, the door body 7 having an internal water side upper end part rockably connected by an internal water side second connection shaft 9 to a lower end part of the internal water side link 4 and a float 10 provided in a lower part on the external water side of the door body 7.
Inventors:
HANDA HIDEAKI
Application Number:
JP2013249886A
Publication Date:
June 08, 2015
Filing Date:
December 03, 2013
Export Citation:
Assignee:
MARSIMA AQUA SYSTEM CORP
International Classes:
E02B7/44
Domestic Patent References:
JP5203536B1 | 2013-06-05 | |||
JP2013096122A | 2013-05-20 | |||
JPH02101821U | 1990-08-14 | |||
JPH11269857A | 1999-10-05 | |||
JP2001348846A | 2001-12-21 | |||
JP2006077389A | 2006-03-23 | |||
JP2004107995A | 2004-04-08 | |||
JPS5456434U | 1979-04-19 | |||
JPS4748740B1 |
Foreign References:
KR20120124750A | 2012-11-14 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Yoshio Asano
Masataka Otani
Yoshio Asano
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