OPENING/CLOSING DEVICE

An opening/closing device according to the present invention includes a gate, a fall prevention unit, a support release unit, a first float, a floating prevention unit, a second float, and a floating prevention release unit. The gate receives a flow of fluid, and is able to fall down toward a downst...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	IGAWA, Osamu, KIKUCHI, Tamotsu, ITO, Motonobu, ODATE, Takaaki, AOYAMA, Takato, HASEGAWA, Kenji
Format:	Patent
Sprache:	eng
Schlagworte:	CESSPOOLS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SEWERAGE SEWERS SOIL SHIFTING WATER SUPPLY
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