Patents Assigned to KANSEI COMPANY
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Patent number: 10415201Abstract: 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.Type: GrantFiled: June 18, 2015Date of Patent: September 17, 2019Assignees: NIPPON KOEI CO., LTD., TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATION, KANSEI COMPANYInventors: Motonobu Ito, Tamotsu Kikuchi, Takato Aoyama, Takaaki Odate, Kenji Hasegawa, Osamu Igawa
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Publication number: 20180135266Abstract: 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.Type: ApplicationFiled: June 18, 2015Publication date: May 17, 2018Applicants: NIPPON KOEI CO., LTD., TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATION, KANSEI COMPANYInventors: Motonobu ITO, Tamotsu KIKUCHI, Takato AOYAMA, Takaaki ODATE, Kenji HASEGAWA, Osamu IGAWA
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Patent number: 8695628Abstract: An opening/closing device 1 according to the present invention includes a gate 10 that receives a flow of a sewage W in an upright state, and can fall toward a downstream side of the flow and a first spring 52a that generates a force for bringing the gate 10 into an upright state, wherein the first spring 52 generates a force insufficient for bringing the gate 10 into the upright state if the gate 10 is in a fallen state, and generates a force sufficient for bringing the gate into the upright state if the gate 10 is tilted by an angle equal to or less than a predetermined angle.Type: GrantFiled: February 2, 2010Date of Patent: April 15, 2014Assignees: Nippon Koei Co., Ltd., Tokyo Metropolitan Sewerage Service Corporation, Kansei CompanyInventors: Hiroshi Komatsu, Motonobu Ito, Kazuhiro Yamanouchi, Kenji Hasegawa, Iwao Ito
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Patent number: 8590560Abstract: An opening/closing device includes a gate that receives a flow of a sewage, and can fall toward a downstream side of the flow, a fall prevention unit that prevents the gate from falling by supporting the gate, a support release unit that releases the support for the gate by the fall prevention unit, a first float that is arranged on the upstream side of the gate, and is smaller in specific gravity than the sewage, a surfacing prevention unit that prevents the first float from surfacing, a second float that is arranged on the upstream side of the gate, above the first float, and is smaller in specific gravity than the fluid, and a surfacing-prevention release unit that releases, resulting from surfacing of the second float, the prevention of the surfacing of the first float by the surfacing prevention unit. Further, the support release unit is activated resulting from surfacing of the first float.Type: GrantFiled: February 2, 2010Date of Patent: November 26, 2013Assignees: Nippon Koei Co., Ltd., Tokyo Metropolitan Sewerage Service Corporation, Kansei CompanyInventors: Hiroshi Komatsu, Motonobu Ito, Kazuhiro Yamanouchi, Kenji Hasegawa, Iwao Ito
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Publication number: 20110297250Abstract: An opening/closing device includes a gate that receives a flow of a sewage, and can fall toward a downstream side of the flow, a fall prevention unit that prevents the gate from falling by supporting the gate, a support release unit that releases the support for the gate by the fall prevention unit, a first float that is arranged on the upstream side of the gate, and is smaller in specific gravity than the sewage, a surfacing prevention unit that prevents the first float from surfacing, a second float that is arranged on the upstream side of the gate, above the first float, and is smaller in specific gravity than the fluid, and a surfacing-prevention release unit that releases, resulting from surfacing of the second float, the prevention of the surfacing of the first float by the surfacing prevention unit. Further, the support release unit is activated resulting from surfacing of the first float.Type: ApplicationFiled: February 2, 2010Publication date: December 8, 2011Applicants: NIPPON KOEI CO., LTD., KANSEI COMPANY, TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATIONInventors: Hiroshi Komatsu, Motonobu Ito, Kazuhiro Yamanouchi, Kenji Hasegawa, Iwao Ito
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Publication number: 20110290343Abstract: An opening/closing device 1 according to the present invention includes a gate 10 that receives a flow of a sewage W in an upright state, and can fall toward a downstream side of the flow and a first spring 52a that generates a force for bringing the gate 10 into an upright state, wherein the first spring 52 generates a force insufficient for bringing the gate 10 into the upright state if the gate 10 is in a fallen state, and generates a force sufficient for bringing the gate into the upright state if the gate 10 is tilted by an angle equal to or less than a predetermined angle.Type: ApplicationFiled: February 2, 2010Publication date: December 1, 2011Applicants: NIPPON KOEI CO., LTD., KANSEI COMPANY, TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATIONInventors: Hiroshi Komatsu, Motonobu Ito, Kazuhiro Yamanouchi, Kenji Hasegawa, Iwao Ito