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...

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Hauptverfasser:	Igawa, Osamu, Odate, Takaaki, Aoyama, Takato, Kikuchi, Tamotsu, Hasegawa, Kenji, Ito, Motonobu
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING CESSPOOLS COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FOUNDATIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULIC ENGINEERING LIGHTING MECHANICAL ENGINEERING SEWERAGE SEWERS SOIL SHIFTING TAPS THERMAL INSULATION IN GENERAL VALVES WATER SUPPLY WEAPONS
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creator	Igawa, Osamu Odate, Takaaki Aoyama, Takato Kikuchi, Tamotsu Hasegawa, Kenji Ito, Motonobu
description	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 downstream direction of the flow. The fall prevention unit supports the gate, thereby preventing the gate from falling down. The support release unit releases the support for the gate by the fall prevention unit. The first float is arranged on an upstream side of the gate, is arranged on one of the left side and the right side of the gate viewed from upstream, and is less in the specific gravity than the fluid. The floating prevention unit prevents the first float from floating.
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The gate receives a flow of fluid, and is able to fall down toward a downstream direction of the flow. The fall prevention unit supports the gate, thereby preventing the gate from falling down. The support release unit releases the support for the gate by the fall prevention unit. The first float is arranged on an upstream side of the gate, is arranged on one of the left side and the right side of the gate viewed from upstream, and is less in the specific gravity than the fluid. The floating prevention unit prevents the first float from floating.</description><language>eng</language><subject>ACTUATING-FLOATS ; BLASTING ; CESSPOOLS ; COCKS ; DEVICES FOR VENTING OR AERATING ; ENGINEERING ELEMENTS AND UNITS ; FIXED CONSTRUCTIONS ; FOUNDATIONS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; HYDRAULIC ENGINEERING ; LIGHTING ; MECHANICAL ENGINEERING ; SEWERAGE ; SEWERS ; SOIL SHIFTING ; TAPS ; THERMAL INSULATION IN GENERAL ; VALVES ; WATER SUPPLY ; WEAPONS</subject><creationdate>2019</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190917&DB=EPODOC&CC=US&NR=10415201B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76418</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190917&DB=EPODOC&CC=US&NR=10415201B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Igawa, Osamu</creatorcontrib><creatorcontrib>Odate, Takaaki</creatorcontrib><creatorcontrib>Aoyama, Takato</creatorcontrib><creatorcontrib>Kikuchi, Tamotsu</creatorcontrib><creatorcontrib>Hasegawa, Kenji</creatorcontrib><creatorcontrib>Ito, Motonobu</creatorcontrib><title>Opening/closing device</title><description>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 downstream direction of the flow. The fall prevention unit supports the gate, thereby preventing the gate from falling down. The support release unit releases the support for the gate by the fall prevention unit. The first float is arranged on an upstream side of the gate, is arranged on one of the left side and the right side of the gate viewed from upstream, and is less in the specific gravity than the fluid. 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The gate receives a flow of fluid, and is able to fall down toward a downstream direction of the flow. The fall prevention unit supports the gate, thereby preventing the gate from falling down. The support release unit releases the support for the gate by the fall prevention unit. The first float is arranged on an upstream side of the gate, is arranged on one of the left side and the right side of the gate viewed from upstream, and is less in the specific gravity than the fluid. The floating prevention unit prevents the first float from floating.</abstract><oa>free_for_read</oa></addata></record>
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subjects	ACTUATING-FLOATS BLASTING CESSPOOLS COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FOUNDATIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULIC ENGINEERING LIGHTING MECHANICAL ENGINEERING SEWERAGE SEWERS SOIL SHIFTING TAPS THERMAL INSULATION IN GENERAL VALVES WATER SUPPLY WEAPONS
title	Opening/closing device
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