Patents by Inventor Hideaki Nishibu
Hideaki Nishibu 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: 10753327Abstract: A fuel supply device includes a sub-tank, a fuel pump, a transfer jet pump, a reduction valve, and a partition wall. The sub-tank is disposed within the fuel tank and forms a container configured to store fuel. The fuel pump is disposed in the sub-tank and is configured to pump fuel from the sub-tank. The transfer jet pump is configured to pump fuel from the fuel tank into the sub-tank. The reduction valve generates heat during operation. The partition wall divides an interior of the sub-tank into a first chamber and a second chamber. The fuel pump is disposed in the first chamber. Fuel passing through the reduction valve is discharged into the second chamber.Type: GrantFiled: March 23, 2017Date of Patent: August 25, 2020Assignee: AISAN KOGYO KABUSHIKI KAISHAInventors: Hideaki Nishibu, Takuhito Fujiwara
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Publication number: 20190128226Abstract: A fuel supply device includes a sub-tank, a fuel pump, a transfer jet pump, a reduction valve, and a partition wall. The sub-tank is disposed within the fuel tank and forms a container configured to store fuel. The fuel pump is disposed in the sub-tank and is configured to pump fuel from the sub-tank. The transfer jet pump is configured to pump fuel from the fuel tank into the sub-tank. The reduction valve generates heat during operation. The partition wall divides an interior of the sub-tank into a first chamber and a second chamber. The fuel pump is disposed in the first chamber. Fuel passing through the reduction valve is discharged into the second chamber.Type: ApplicationFiled: March 23, 2017Publication date: May 2, 2019Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Hideaki NISHIBU, Takuhito FUJIWARA
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Patent number: 8789512Abstract: A fluid pressure regulating device is i) provided with a pressure regulating member that forms a pressure regulating chamber inside a housing having introduction side and discharge side fuel passages, and communicates these passages according to introduced fuel pressure, and ii) is able to regulate the fuel pressure introduced into a fuel passage to a set pressure. The housing is provided with outer and inner annular valve seat portions that separate the fuel passages inside the pressure regulating chamber, and form another fuel passage inside the pressure regulating chamber. Different clearances are set between the pressure regulating member, and the outer annular valve seat portion and the inner annular valve seat portion, such that when the pressure regulating member abuts against one of the valve seat portions, a small gap is formed between the other valve seat portion and the pressure regulating member.Type: GrantFiled: June 1, 2011Date of Patent: July 29, 2014Assignees: Toyota Jidosha Kabushiki Kaisha, Aisan Kogyo Kabushiki KaishaInventors: Masaki Akagi, Hiromasa Suzuki, Hideaki Nishibu, Koji Yoshida, Yuichi Murakoshi
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Patent number: 8517050Abstract: A pressure regulating device that regulates a pressure of a fuel, including a housing that includes a fuel introduction passage into which the fuel to be supplied into a fuel consuming unit is introduced and a fuel discharge passage from which the fuel is discharged, wherein the fuel discharge passage includes a plurality of discharge passage portions; a pressure regulating provided so as to partition the housing, and that communicates the fuel introduction passage with the fuel discharge passage and cuts off the fuel introduction passage from the fuel discharge passage, according to a pressure of the fuel in the housing; an impelling mechanism that impels the pressure regulating member in a direction of cutting off the fuel introduction passage from the fuel discharge passage; and a discharge restricting mechanism, provided in the fuel discharge passage, that selectively restricts discharge of the fuel from the discharge passage portions.Type: GrantFiled: June 2, 2011Date of Patent: August 27, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Aisan Kogyo Kabushiki KaishaInventors: Masaki Akagi, Hideaki Nishibu
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Patent number: 8333175Abstract: On aspect according to the present invention includes a fuel supply system including a backflow preventing device provided in a fuel supply path communicating between a fuel pump and a fuel injecting valve device of an engine. The backflow preventing device can prevent backflow of the fuel from the fuel injecting valve device, so that a pressure of the fuel between the backflow preventing device and the fuel injecting valve device can maintained after stopping the fuel pump.Type: GrantFiled: January 12, 2010Date of Patent: December 18, 2012Assignee: Aisan Kogyo Kabushiki KaishaInventors: Toshio Nishio, Koji Yoshida, Hideaki Nishibu, Kazumichi Hanai, Yuichi Murakoshi
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Patent number: 8171916Abstract: A fuel supply system includes a fuel pump for supplying fuel in a fuel tank to an engine, a pressure regulator and a three-way valve disposed in a valve chamber. The pressure regulator includes a pressure regulating chamber and a control pressure chamber and adjusts a fuel pressure in the pressure regulating chamber depending on a fuel pressure in the control pressure chamber. A control pressure passage for flowing the fuel to the control pressure chamber and the valve chamber is formed in a unit case.Type: GrantFiled: August 10, 2009Date of Patent: May 8, 2012Assignee: Aisan Kogyo Kabushiki KaishaInventors: Hideaki Nishibu, Toshio Nishio, Yoko Iwao
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Publication number: 20110297253Abstract: A pressure regulating device that regulates a pressure of a fuel, including a housing that includes a fuel introduction passage into which the fuel to be supplied into a fuel consuming unit is introduced and a fuel discharge passage from which the fuel is discharged, wherein the fuel discharge passage includes a plurality of discharge passage portions; a pressure regulating provided so as to partition the housing, and that communicates the fuel introduction passage with the fuel discharge passage and cuts off the fuel introduction passage from the fuel discharge passage, according to a pressure of the fuel in the housing; an impelling mechanism that impels the pressure regulating member in a direction of cutting off the fuel introduction passage from the fuel discharge passage; and a discharge restricting mechanism, provided in the fuel discharge passage, that selectively restricts discharge of the fuel from the discharge passage portions.Type: ApplicationFiled: June 2, 2011Publication date: December 8, 2011Applicants: AISAN KOGYO KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaki AKAGI, Hideaki NISHIBU
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Publication number: 20110297126Abstract: A fluid pressure regulating device is i) provided with a pressure regulating member that forms a pressure regulating chamber inside a housing having introduction side and discharge side fuel passages, and communicates these passages according to introduced fuel pressure, and ii) is able to regulate the fuel pressure introduced into a fuel passage to a set pressure. The housing is provided with outer and inner annular valve seat portions that separate the fuel passages inside the pressure regulating chamber, and form another fuel passage inside the pressure regulating chamber. Different clearances are set between the pressure regulating member, and the outer annular valve seat portion and the inner annular valve seat portion, such that when the pressure regulating member abuts against one of the valve seat portions, a small gap is formed between the other valve seat portion and the pressure regulating member.Type: ApplicationFiled: June 1, 2011Publication date: December 8, 2011Applicants: AISAN KOGYO KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaki AKAGI, Hiromasa SUZUKI, Hideaki NISHIBU, Koji YOSHIDA, Yuichi MURAKOSHI
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Patent number: 7886525Abstract: An exhaust gas purification device of an internal combustion engine is taught that preferably include a storage tank storing an exhaust gas purification solution that is injected into an exhaust passage of the internal combustion engine, a solution supply line that is constructed to introduce the exhaust gas purification solution from the storage tank to the exhaust passage, a supply pump disposed on the solution supply line, and a gas-liquid selection device. The gas-liquid selection device is constructed to selectively introduce the exhaust gas purification solution and air into the solution supply line.Type: GrantFiled: December 7, 2007Date of Patent: February 15, 2011Assignee: Aisan Kogyo Kabushiki KaishaInventors: Hideaki Nishibu, Tsuneaki Aoki
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Publication number: 20100175666Abstract: On aspect according to the present invention includes a fuel supply system including a backflow preventing device provided in a fuel supply path communicating between a fuel pump and a fuel injecting valve device of an engine. The backflow preventing device can prevent backflow of the fuel from the fuel injecting valve device, so that a pressure of the fuel between the backflow preventing device and the fuel injecting valve device can maintained after stopping the fuel pump.Type: ApplicationFiled: January 12, 2010Publication date: July 15, 2010Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Toshio NISHIO, Koji YOSHIDA, Hideaki NISHIBU, Kazumichi HANAI, Yuichi MURAKOSHI
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Publication number: 20100043755Abstract: A fuel supply system includes a fuel pump for supplying fuel in a fuel tank to an engine, a pressure regulator and a three-way valve disposed in a valve chamber. The pressure regulator includes a pressure regulating chamber and a control pressure chamber and adjusts a fuel pressure in the pressure regulating chamber depending on a fuel pressure in the control pressure chamber. A control pressure passage for flowing the fuel to the control pressure chamber and the valve chamber is formed in a unit case.Type: ApplicationFiled: August 10, 2009Publication date: February 25, 2010Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Hideaki NISHIBU, Toshio NISHIO, Yoko IWAO
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Publication number: 20080148716Abstract: An exhaust gas purification device of an internal combustion engine is taught that preferably include a storage tank storing an exhaust gas purification solution that is injected into an exhaust passage of the internal combustion engine, a solution supply line that is constructed to introduce the exhaust gas purification solution from the storage tank to the exhaust passage, a supply pump disposed on the solution supply line, and a gas-liquid selection device. The gas-liquid selection device is constructed to selectively introduce the exhaust gas purification solution and air into the solution supply line.Type: ApplicationFiled: December 7, 2007Publication date: June 26, 2008Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Hideaki NISHIBU, Tsuneaki AOKI
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Publication number: 20070228193Abstract: The invention provides an effective technique for improving the sealing performance and durability of a fluid control valve, particularly a fuel injector. The fuel injector 10 has a ball valve 32 and a valve seat body 41. A fuel jet opening 41c formed in the valve seat body 41 is closed when the ball valve 32 contacts a sealing surface 41b of the valve seat body 41, while being opened when the ball valve 31 separates from the sealing surface 41b of the valve seat body 41. A stainless steel base material and a Sn plated film softer than the base material form a smooth surface 42 on the sealing surface 41b of the valve seat body 41.Type: ApplicationFiled: March 26, 2007Publication date: October 4, 2007Inventors: Koji Kato, Fumiyasu Sugiyama, Hideaki Nishibu, Hiroshi Kawazoe
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Patent number: 6896195Abstract: An electromagnetic fuel injection valve wherein it is possible to prevent undesired adhesion between the respective abutting surfaces of an armature and a stationary core as well as to ensure the required wear resistance for the abutting surfaces and wherein the amount of lift of the valving element is unlikely to change is provided. After rough surfaces like satin-finished surfaces have been farmed on the abutting surfaces by shot peening, the rough surfaces are flattened by spotting. Therefore, the abutting surfaces can easily separate from each other without likelihood of adhering so closely that is difficult for them to separate from each other. Also, the amount of lift of the valving element is unlikely to change. Accordingly, the amount of fuel injected by the fuel injection valve is unlikely to change with passage of time. Thus, stable fuel supply can be performed.Type: GrantFiled: April 8, 2003Date of Patent: May 24, 2005Assignee: Aisan Kogyo Kabushiki KaishaInventors: Yukinori Kato, Hideaki Nishibu, Hikaru Kikuta
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Publication number: 20030189113Abstract: An electromagnetic fuel injection valve wherein it is possible to prevent undesired adhesion between the respective abutting surfaces of an armature and a stationary core as well as to ensure the required wear resistance for the abutting surfaces and wherein the amount of lift of the valving element is unlikely to change is provided. After rough surfaces like satin-finished surfaces have been formed on the abutting surfaces by shot peening, the rough surfaces are flattened by spotting. Therefore, the abutting surfaces can easily separate from each other without likelihood of adhering so closely that it is difficult for them to separate from each other. In addition, because the tips of asperities of the rough surfaces are flattened by spotting, the tips of the asperities will not easily be worn away by repeated contact, and the amount of lift of the valving element is unlikely to change. Accordingly, the amount of fuel injected by the fuel injection valve is unlikely to change with passage of time.Type: ApplicationFiled: April 8, 2003Publication date: October 9, 2003Inventors: Yukinori Kato, Hideaki Nishibu, Hikaru Kikuta