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Hiroshi Kumagai

Hiroshi Kumagai, Kanagawa JP

Patent application numberDescriptionPublished
20110088804FUEL HOSE - A fuel hose (04-21-2011

Patent applications by Hiroshi Kumagai, Kanagawa JP

Hiroshi Kumagai, Yamato-Shi JP

Patent application numberDescriptionPublished
20090000684MULTI-LAYER HOSE - A multi-layer hose usable for a fuel hose of an automotive vehicle. The multi-layer hose includes an intermediate layer formed of a resin whose main component includes at least one of polyvinyl alcohol and ethylene-vinyl alcohol copolymer. An outer layer is provided formed of rubber and disposed outside the intermediate layer. Additionally, an inner layer is provided formed of fluoroelastomer and disposed inside the intermediate layer to be laminated directly on the intermediate layer.01-01-2009
20090000685MULTI-LAYER HOSE - A multi-layer hose usable for a fuel hose of an automotive vehicle. The multi-layer hose includes an intermediate layer formed of a resin whose main component includes polyester. An outer layer is provided formed of rubber and disposed outside the intermediate layer. Additionally, an inner layer is provided formed of fluoroelastomer and disposed inside the intermediate layer to be laminated directly on the intermediate layer.01-01-2009
20090169787MULTILAYER ARTICLE - There is provided a multilayer article suitable for use as a fuel hose in an automotive fuel system and the like, which has an inner rubber layer, an outer rubber layer and an inter-mediate resin layer formed of polyamine-based resin between the inner and outer rubber layers.07-02-2009
20090169791MULTILAYER ARTICLE - There is provided a multilayer article suitable for use as a fuel hose in an automotive fuel system and the like, which has an inner rubber layer, an outer rubber layer and an intermediate resin layer formed of polyphenylene sulfide-based resin between the inner and outer rubber layers.07-02-2009
20090288729MULTI-LAYER HOSE - A multi-layer hose (11-26-2009
20110003162MAGNESIUM ALLOY MEMBER - There is provided a magnesium alloy member that includes an aluminum-containing magnesium alloy material. The magnesium alloy material has a modified layer formed at a surface thereof in such a manner that at least a surface of the modified layer has a higher aluminum content than that of any unmodified base portion of the magnesium alloy material.01-06-2011

Hiroshi Kumagai, Ibaraki JP

Patent application numberDescriptionPublished
20090101375CONSTRUCTION MACHINE - Mounted on a revolving frame are onboard equipments including engine and heat exchanger. These onboard equipments are accommodated in a housing cover consisted by including a front partition panel. The front partition panel is fixed to a seat screw member which is provided on the revolving frame. At this time, lower end portion of the front partition panel is hung in a floated state above the revolving frame by a stopper which is adapted rest on an upper end portion of the seat screw member. Therefore, lower end portion of the front partition panel is hung in a floated state above a upper surface of a left side frame, facilitating to align a bolt through hole in the front partition panel with a nut of the seat screw member at the time of threading and tightening a bolt into the nut.04-23-2009
20100283278CONSTRUCTION MACHINE - A space surrounded by a partition member (11-11-2010