Patents by Inventor Yasunori Takaku
Yasunori Takaku 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: 7717400Abstract: A body 20 has body wall surfaces 21, 22 defining a body space inside. A core 30 is disposed within the body 20. The core 30 has a core wall surface defining a core space inside which has a bottom having an opening 33a. A valve 50 is inserted through the opening 33a of the core 30 with a clearance and can move along the core wall surface of the core 30. The valve 50 has a hole with a bottom which is comprised of holes 52a, 53a, 57a, a contact surface 58 that contacts the core wall surface of the core 30, a valve head 59 that can contact a valve seat 40, at least one first communication hole 55 that provides communication between the hole 53a and a second inflow fuel passage 30a within the core space, and at least one second communication hole 54 that provides communication between the hole 52a and the first inflow fuel passage 21a, 22a within the body space.Type: GrantFiled: April 19, 2007Date of Patent: May 18, 2010Assignee: Aisan Kogyo Kabushiki KaishaInventors: Yoji Tsuduki, Hikaru Kikuta, Takuya Ito, Hiroshi Oda, Yasunori Takaku
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Publication number: 20090126697Abstract: A fuel-feeding system may preferably include a fuel tank containing liquid fuel; a fuel pump capable of pumping the liquid fuel contained in the fuel tank; a fuel injection valve capable of injecting the liquid fuel pumped by the fuel pump; and a three-way valve having a first port, a second port and a third port. The three-way valve is constructed so as to be switched between a first condition in which the first, second and third ports communicate with each other and a second condition in which only the first and third ports communicate with each other. The fuel injection valve is connected to the third external conduit at a position between the third port and the second relief valve, so that a pressure of the liquid fuel fed to the fuel injection valve can be switched between the first setting pressure and the second setting pressure when the three-way valve is switched between the first condition and the second condition.Type: ApplicationFiled: September 25, 2008Publication date: May 21, 2009Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Yasunori TAKAKU, Kimiya NAKATA, Yoji TSUZUKI, Hideki ITO
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Publication number: 20080257419Abstract: A body 20 has body wall surfaces 21, 22 defining a body space inside. A core 30 is disposed within the body 20. The core 30 has a core wall surface defining a core space inside which has a bottom having an opening 33a. A valve 50 is inserted through the opening 33a of the core 30 with a clearance and can move along the core wall surface of the core 30. The valve 50 has a hole with a bottom which is comprised of holes 52a, 53a, 57a, a contact surface 58 that contacts the core wall surface of the core 30, a valve head 59 that can contact a valve seat 40, at least one first communication hole 55 that provides communication between the hole 53a and a second inflow fuel passage 30a within the core space, and at least one second communication hole 54 that provides communication between the hole 52a and the first inflow fuel passage 21a, 22a within the body space.Type: ApplicationFiled: April 19, 2007Publication date: October 23, 2008Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Yoji TSUDUKI, Hikaru KIKUTA, Takuya ITO, Hiroshi ODA, Yasunori TAKAKU
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Patent number: 6578778Abstract: The fuel injection valve according to the present invention is a fuel injection valve adapted to inject a swirl flow of a high-pressure fuel from an injection port thereof. The injection port includes a fuel inlet portion and a fuel outlet portion. The fuel inlet portion has a cylindrical bore. In the fuel outlet portion, a circumference of an inlet thereof is joined to that of an outlet of the cylindrical bore, and the fuel outlet portion has a cross-sectionally elliptic chamfered part diverging from the inlet thereof to the outlet thereof. A depth of the chamfered part is set ¼ to 2 times as large as a diameter of the fuel inlet portion.Type: GrantFiled: January 12, 2001Date of Patent: June 17, 2003Assignees: Aisan Kogyo Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Masahiro Koizumi, Yasunori Takaku, Keiso Takeda, Yukio Koseki, Tomojiro Sugimoto
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Publication number: 20010010341Abstract: The fuel injection valve according to the present invention is a fuel injection valve adapted to inject a swirl flow of a high-pressure fuel from an injection port thereof. The injection port includes a fuel inlet portion and a fuel outlet portion. The fuel inlet portion has a cylindrical bore. In the fuel outlet portion, a circumference of an inlet thereof is joined to that of an outlet of the cylindrical bore, and the fuel outlet portion has a cross-sectionally elliptic chamfered part diverging from the inlet thereof to the outlet thereof. A depth of the chamfered part is set ¼ to 2 times as large as a diameter of the fuel inlet portion.Type: ApplicationFiled: January 12, 2001Publication date: August 2, 2001Applicant: Aisan Kogyo Kabushiki KaishaInventors: Masahiro Koizumi, Yasunori Takaku, Keiso Takeda, Yukio Koseki, Tomojiro Sugimoto
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Patent number: 4854830Abstract: A motor-driven fuel pump including a motor section provided with a driving motor, and a pump section arranged below the motor section and provided with an impeller to be driven by the driving motor. A plurality of pressure compensation hollows are formed on opposite surfaces of a sealing portion of the impeller, and a plurality of communication holes are formed through the sealing portion for communicating the pressure compensation hollows. In another aspect, a plurality of pressure compensation passages are provided to be communicated to a higher pressure side of either a pump chamber defined around outer peripheral vanes of the impeller and a fuel well for receiving a fuel leaked along a sealing portion of the impeller.Type: GrantFiled: April 28, 1988Date of Patent: August 8, 1989Assignee: Aisan Kogyo Kabushiki KaishaInventors: Tadashi Kozawa, Naohiro Natsume, Hirofumi Komatsubara, Yasunori Takaku, Kiyoshi Kato, Seiichi Harada