OPENING-CLOSING DEVICE - NIPPON KOEI CO LTD

Title:

OPENING-CLOSING DEVICE

Document Type and Number:

WIPO Patent Application WO/2010/090293

Kind Code:

A1

Abstract:

An opening-closing device (1) provided with a gate (10) which can receive the flow of sewage water (W) while in a standing position and fall over in the downstream direction of the flow, and also with a first spring (52a) which generates force for moving the gate (10) to the standing position. When the gate (10) is in a fallen-over position, the first spring (52a) generates force which is not sufficient to move the gate (10) to the standing position, and when the gate (10) is in a tilted position in which the gate (10) is tilted to an angle equal to or less than a predetermined angle, the first spring (52a) generates force which is sufficient to move the gate to the standing position.

Inventors:

KOMATSU HIROSHI (JP)
ITO MOTONOBU (JP)
YAMANOUCHI KAZUHIRO (JP)
HASEGAWA KENJI (JP)
ITO IWAO (JP)

Application Number:

PCT/JP2010/051731

Publication Date:

August 12, 2010

Filing Date:

February 02, 2010

Export Citation:

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Assignee:

NIPPON KOEI CO LTD (JP)
TOKYO METRO SEWERAGE SERV CORP (JP)
KANSEI COMPANY (JP)
KOMATSU HIROSHI (JP)
ITO MOTONOBU (JP)
YAMANOUCHI KAZUHIRO (JP)
HASEGAWA KENJI (JP)
ITO IWAO (JP)

International Classes:

E03F9/00; E02B7/40; E02B8/02; E03F7/02

Foreign References:

JP2006022517A	2006-01-26
JP2004300895A	2004-10-28
JP2004300895A	2004-10-28

Other References: