Patents by Inventor Kouji Izutani
Kouji Izutani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7603989Abstract: A fuel feed apparatus pumps fuel in a fuel tank to an outside of the fuel tank. The fuel feed apparatus includes a lid member that covers an opening formed in the fuel tank. The lid member includes an outlet passage, through which fuel passes to the outside of the fuel tank. A pump module is accommodated in the fuel tank. The pump module is supported by the lid member. The pump module includes a fuel pump that pumps fuel in the fuel tank to the outside of the fuel tank. A pipe member connects with a pipe connecting portion of the outlet passage and a pipe connecting portion of the pump module. The pipe member introduces fuel discharged from the pump module to the outlet passage. The pipe connecting portion of the outlet passage and the pipe connecting portion of the pump module are substantially perpendicular to an axis of the lid member.Type: GrantFiled: December 27, 2005Date of Patent: October 20, 2009Assignee: Denso CorporationInventors: Noriya Matsumoto, Kouji Izutani, Keiichi Yamashita
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Patent number: 7472693Abstract: A fuel feed apparatus supplies fuel in a fuel tank to an outside of the fuel tank. The fuel feed apparatus includes a fuel pump that is accommodated in the fuel tank. The fuel pump pumps fuel in the fuel tank. The suction filter connects with an inlet of the fuel pump. The suction filter is arranged in a bottom portion of the fuel tank. The suction filter removes foreign matters contained in fuel drawn into the fuel pump. The holder engages with a lateral portion of the suction filter. The holder restricts the suction lifter from moving in a lateral direction of the suction filter.Type: GrantFiled: December 19, 2005Date of Patent: January 6, 2009Assignee: Denso CorporationInventors: Kouji Izutani, Noriya Matsumoto, Keiichi Yamashita
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Patent number: 7367324Abstract: A fuel feed apparatus is provided to a fuel tank. The fuel feed apparatus includes a lid member, a canister, and a fuel pump. The lid member covers a through hole of the fuel tank. The canister connects with the lid member. The canister is accommodated in the fuel tank for removably absorbing fuel vapor in the fuel tank. The canister has a cross section, which is in a substantially semicircle shape. The canister has an outer peripheral wall that partially defines a remaining space on the lateral side of the canister. The fuel pump is received in the remaining space on the lateral side of the canister in the fuel tank for pumping fuel in the fuel tank.Type: GrantFiled: April 21, 2006Date of Patent: May 6, 2008Assignee: Denso CorporationInventors: Kouji Izutani, Keiichi Yamashita, Noriya Matsumoto, Koji Miwa
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Patent number: 7306715Abstract: A pump module includes a fuel pump, a fuel filter having a filter casing and a filter element, a fuel outlet, and a pressure regulator. The filter casing covers at least a part of the outer circumference of the fuel pump, and accommodates the filter element. The fuel outlet is disposed outside the outer circumference of the filter casing, and includes an outflow passage for flowing the fuel from a discharge opening disposed on a sidewall of the outer circumference of the filter casing. The outflow passage includes a retrieve passage extending from the discharge opening to the sidewall of the outer circumference of the filter casing. The pressure regulator is disposed outside the outer circumference of the filter casing, and includes a regulator inlet for introducing the fuel, the regulator inlet being opened to the retrieve passage.Type: GrantFiled: July 28, 2003Date of Patent: December 11, 2007Assignee: Denso CorporationInventors: Hideki Kato, Kouji Izutani, Katsuhisa Yamada, Masaaki Konishi
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Patent number: 7159576Abstract: A fuel feed apparatus includes a lid module that includes a canister accommodated in a fuel tank. The canister defines a space in the vicinity of a lateral periphery of the canister in the fuel tank. The fuel feed apparatus further includes a pump module that is located in the space. The fuel feed apparatus further includes a connecting member that is axially slidable with respect to the lid module and the pump module along the lateral periphery of the canister and a lateral periphery of the pump module. When the lid module is connected to the fuel tank by moving the lid module toward the pump module along the connecting member, the connecting member hooks to the pump module, so that the connecting member is restricted from moving in a direction, in which the lid module moves toward the pump module.Type: GrantFiled: June 7, 2006Date of Patent: January 9, 2007Assignees: Denso Corporation, Toyota Jidosha Kabushiki KaishaInventors: Keiichi Yamashita, Kouji Izutani, Noriya Matsumoto, Koji Miwa
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Publication number: 20060272619Abstract: A fuel feed apparatus includes a lid module that includes a canister accommodated in a fuel tank. The canister defines a space in the vicinity of a lateral periphery of the canister in the fuel tank. The fuel feed apparatus further includes a pump module that is located in the space. The fuel feed apparatus further includes a connecting member that is axially slidable with respect to the lid module and the pump module along the lateral periphery of the canister and a lateral periphery of the pump module. When the lid module is connected to the fuel tank by moving the lid module toward the pump module along the connecting member, the connecting member hooks to the pump module, so that the connecting member is restricted from moving in a direction, in which the lid module moves toward the pump module.Type: ApplicationFiled: June 7, 2006Publication date: December 7, 2006Applicants: Denso Corporation, Toyota Jidosha KabushikiInventors: Keiichi Yamashita, Kouji Izutani, Noriya Matsumoto, Koji Miwa
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Publication number: 20060236982Abstract: A fuel feed apparatus is provided to a fuel tank. The fuel feed apparatus includes a lid member, a canister, and a fuel pump. The lid member covers a through hole of the fuel tank. The canister connects with the lid member. The canister is accommodated in the fuel tank for removably absorbing fuel vapor in the fuel tank. The canister has a cross section, which is in a substantially semicircle shape. The canister has an outer peripheral wall that partially defines a remaining space on the lateral side of the canister. The fuel pump is received in the remaining space on the lateral side of the canister in the fuel tank for pumping fuel in the fuel tank.Type: ApplicationFiled: April 21, 2006Publication date: October 26, 2006Applicant: DENSO CORPORATIONInventors: Kouji Izutani, Keiichi Yamashita, Noriya Matsumoto, Koji Miwa
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Patent number: 7112278Abstract: Fuel passes through a fuel filter from the outer layer of the fuel filter toward the inner layer of the fuel filter. Large debris is arrested in the outer layer made of nonwoven fabric, and small debris is arrested in the inner layer made of filter paper, so that plugging is prevented. The fuel filter is inserted between a fuel pump and a sub-tank. The fuel pump is supported by the fuel filter via both a suction pipe and a fixing section. Vibration generated in the fuel pump is absorbed by the fuel filter which has sufficient thickness, so that the vibration is not transferred to the sub-tank. Thus, filtering performance and lifespan of the fuel filter are easily secured while decreasing vibration transfer.Type: GrantFiled: January 20, 2004Date of Patent: September 26, 2006Assignee: Denso CorporationInventors: Katsuhisa Yamada, Kouji Izutani
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Publication number: 20060138035Abstract: A fuel feed apparatus supplies fuel in a fuel tank to an outside of the fuel tank. The fuel feed apparatus includes a fuel pump that is accommodated in the fuel tank. The fuel pump pumps fuel in the fuel tank. The suction filter connects with an inlet of the fuel pump. The suction filter is arranged in a bottom portion of the fuel tank. The suction filter removes foreign matters contained in fuel drawn into the fuel pump. The holder engages with a lateral portion of the suction filter. The holder restricts the suction lifter from moving in a lateral direction of the suction filter.Type: ApplicationFiled: December 19, 2005Publication date: June 29, 2006Applicant: DENSO CORPORATIONInventors: Kouji Izutani, Noriya Matsumoto, Keiichi Yamashita
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Publication number: 20060137662Abstract: A fuel feed apparatus pumps fuel in a fuel tank to an outside of the fuel tank. The fuel feed apparatus includes a lid member that covers an opening formed in the fuel tank. The lid member includes an outlet passage, through which fuel passes to the outside of the fuel tank. A pump module is accommodated in the fuel tank. The pump module is supported by the lid member. The pump module includes a fuel pump that pumps fuel in the fuel tank to the outside of the fuel tank. A pipe member connects with a pipe connecting portion of the outlet passage and a pipe connecting portion of the pump module. The pipe member introduces fuel discharged from the pump module to the outlet passage. The pipe connecting portion of the outlet passage and the pipe connecting portion of the pump module are substantially perpendicular to an axis of the lid member.Type: ApplicationFiled: December 27, 2005Publication date: June 29, 2006Applicant: Denso CorporationInventors: Noriya Matsumoto, Kouji Izutani, Keiichi Yamashita
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Publication number: 20050100461Abstract: A resinous lid member is constructed of a flange, a lower case, an upper case and a cover. The lower case is connected with the upper case, so that a cooling passage is formed. Fuel is discharged from a fuel pump into the cooling passage through a discharge pipe of a filter case, a flexible pipe and an inlet pipe. The cover covers the opening of the upper case, so that the cover forms a receiving chamber with the upper case to receive a circuit portion that generates heat. The receiving chamber has an air outlet port which is connected with an intake manifold of an engine. The engine is operated, and negative pressure is generated in the intake manifold, so that air flows from an air inlet port, which is opened to the air, to the air outlet port through the receiving chamber, so that the air flow cools the control circuit received in the receiving chamber.Type: ApplicationFiled: October 1, 2004Publication date: May 12, 2005Applicant: DENSO CORPORATIONInventors: Kouji Izutani, Noriya Matsumoto
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Patent number: 6863814Abstract: A fuel feed apparatus is accommodated in a fuel tank. Hooking projection parts have claws formed on a fuel discharge side of a fuel pump. The claws are fitted and hooked in an opening formed on a filter case, so that the fuel pump is protected from dropping out from the filter case. The entire circumference of the fuel discharge side of the fuel pump is inserted with force into a press-insertion part formed in the filter case. A fuel suction side of the fuel pump is not supported by other parts, so it is in free condition.Type: GrantFiled: June 17, 2003Date of Patent: March 8, 2005Assignee: Denko CorporationInventors: Kenji Okabe, Hideki Narisako, Yoshio Ebihara, Kouji Izutani
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Publication number: 20040144705Abstract: Fuel passes through a fuel filter from the outer layer of the fuel filter toward the inner layer of the fuel filter. Large debris is arrested in the outer layer made of nonwoven fabric, and small debris is arrested in the inner layer made of filter paper, so that plugging is prevented. The fuel filter is inserted between a fuel pump and a sub-tank. The fuel pump is supported by the fuel filter via both a suction pipe and a fixing section. Vibration generated in the fuel pump is absorbed by the fuel filter which has sufficient thickness, so that the vibration is not transferred to the sub-tank. Thus, filtering performance and lifespan of the fuel filter are easily secured while decreasing vibration transfer.Type: ApplicationFiled: January 20, 2004Publication date: July 29, 2004Applicant: DENSO CORPORATIONInventors: Katsuhisa Yamada, Kouji Izutani
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Publication number: 20040020839Abstract: A pump module includes a fuel pump, a fuel filter having a filter casing and a filter element, a fuel outlet, and a pressure regulator. The filter casing covers at least a part of the outer circumference of the fuel pump, and accommodates the filter element. The fuel outlet is disposed outside the outer circumference of the filter casing, and includes an outflow passage for flowing the fuel from a discharge opening disposed on a sidewall of the outer circumference of the filter casing. The outflow passage includes a retrieve passage extending from the discharge opening to the sidewall of the outer circumference of the filter casing. The pressure regulator is disposed outside the outer circumference of the filter casing, and includes a regulator inlet for introducing the fuel, the regulator inlet being opened to the retrieve passage.Type: ApplicationFiled: July 28, 2003Publication date: February 5, 2004Inventors: Hideki Kato, Kouji Izutani, Katsuhisa Yamada, Masaaki Konishi
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Publication number: 20040000516Abstract: A fuel feed apparatus is accommodated in a fuel tank. Hooking projection parts have claws formed on a fuel discharge side of a fuel pump. The claws are fitted and hooked in an opening formed on a filter case, so that the fuel pump is protected from dropping out from the filter case. The entire circumference of the fuel discharge side of the fuel pump is inserted with force into a press-insertion part formed in the filter case. A fuel suction side of the fuel pump is not supported by other parts, so it is in free condition.Type: ApplicationFiled: June 17, 2003Publication date: January 1, 2004Inventors: Kenji Okabe, Hideki Narisako, Yoshio Ebihara, Kouji Izutani
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Patent number: 6123521Abstract: A fuel supply system having a pump for drawing and discharging fuel from a tank and a filter for catching foreign matter in the fuel. A housing has a fuel outlet and supports the pump. The pump has a fuel intake port and a fuel discharge port. A fuel passage is located in the housing and connects the fuel outlet with the discharge port The filter is located in the fuel passage. The filter has a filter case and a filter element therein. The filter case is located in the housing spaced from the inner wall thereof.Type: GrantFiled: May 28, 1998Date of Patent: September 26, 2000Assignees: Toyota Jidosha Kabushiki Kaisha, AISAN Industry Co., Ltd., Denso CorporationInventors: Eiji Mori, Masahide Kobayashi, Takashi Nagai, Satomi Wada, Kouji Izutani, Keiichi Yamashita, Hideyuki Nakai, Kingo Okada, Kazuhiro Shinomiya
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Patent number: 6004462Abstract: Resin having a susceptibility to electrostatic charge which is opposite in polarity to the susceptibility to electrostatic charge of a filter sheet or member forming a filter element is impregnated into the filter member. For example, when the filter member is composed of polyester of 50-70 weight percentage and glass fiber of 5-25 weight percentage as well as pulp of 15-35 weight percentage, resin composed of phenol resin of 5-20 weight percentage and melamine resin of 80-95 weight percentage is impregnated into the filter member so that the susceptibility to electrostatic charge of the filter member can be neutralized. Thus, static electricity generated by friction between the filter element and fuel flowing therethrough can be controlled.Type: GrantFiled: June 27, 1996Date of Patent: December 21, 1999Assignee: Nippondenso Co., Ltd.Inventors: Katsuhisa Yamada, Kingo Okada, Kouji Izutani, Kenji Okabe
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Patent number: 5900148Abstract: A cover for covering an opening of a fuel tank holds a fuel pump, a fuel filter, a fuel level gauge and a pressure regulator inside the fuel tank. The fuel filter is contained inside a filter housing having a C-shaped cross-section. A filter element also has a C-shaped cross-section. This type of filter element is formed by bending flat stacked pre-assembled bodies into a C-shape. Other components such as the fuel level gauge, a fuel passage and the like are placed in an open part of the C-shaped cross-section and thus, the fuel filter and the other components are integrated in a high density.Type: GrantFiled: June 25, 1996Date of Patent: May 4, 1999Assignee: Nippondenso Co., Ltd.Inventors: Kouji Izutani, Kingo Okada, Takayuki Nakaya, Katsuhisa Yamada
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Patent number: 5785032Abstract: A cover for a fuel tank opening is molded with insulating resin and a plurality of terminal pins is directly inserted thereinto. A lower housing portion, made of conductive resin and containing a fuel filter element, is weld-connected to the fuel tank side of the cover. A fuel pump is held under the cover. When electricity is supplied to the fuel pump via an electric connector, fuel is discharged from the fuel pump and this discharged fuel is filtered by a fuel filter. Static electricity generated in the fuel filter dissipates through the lower housing portion made of conductive resin. This construction enables suppression of electrostatic voltage generated in the fuel filter. Moreover, a plurality of connector terminals are directly inserted into the upper housing cover portion of the fuel filter housing at the time of molding, which can therefore supply electric power to the fuel pump with a simplified construction.Type: GrantFiled: August 8, 1996Date of Patent: July 28, 1998Assignee: Nippondenso Co., Ltd.Inventors: Keiichi Yamashita, Kouji Izutani, Kingo Okada, Hideto Takahashi
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Patent number: 5782223Abstract: A fuel supply system is installed inside a fuel tank as part of a cover closing an opening of the fuel tank. The fuel filter is integrally fixed to the cover and a fuel pump is mounted via the fuel filter. The fuel filter is in the shape of a partial annulus disposed in a certain angular range. Such system parts as a pressure regulator, an electric connector, a fuel level gauge and a fuel pipe are contained in the remaining angular range of the fuel pump periphery where the fuel filter is not disposed.Type: GrantFiled: August 8, 1996Date of Patent: July 21, 1998Assignee: Nippondenso Co., Ltd.Inventors: Keiichi Yamashita, Kouji Izutani, Kingo Okada, Hideto Takahashi