Patents by Inventor Manabu Miyaki
Manabu Miyaki 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: 8302889Abstract: A fuel injection valve has a valve body for opening and closing a valve seat, and receives an operation signal from a control unit to operate the valve body so that fuel is injected from a plurality of injection holes formed in an injection hole plate welded through a welded portion to a downstream side of the valve seat while passing through a gap between the valve body and the valve seat. The injection hole plate is formed at its central portion with a convex portion which is substantially axisymmetric with respect to a valve seat axis and which has a circular-arc shaped cross section, and the welded portion is also substantially axisymmetric with respect to the valve seat axis.Type: GrantFiled: July 6, 2011Date of Patent: November 6, 2012Assignee: Mitsubishi Electric CorporationInventors: Naoya Hashii, Keishi Nakano, Tsuyoshi Munezane, Atsushi Yoshimura, Manabu Miyaki
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Publication number: 20110260084Abstract: A fuel injection valve has a valve body for opening and closing a valve seat, and receives an operation signal from a control unit to operate the valve body so that fuel is injected from a plurality of injection holes formed in an injection hole plate welded through a welded portion to a downstream side of the valve seat while passing through a gap between the valve body and the valve seat. The injection hole plate is formed at its central portion with a convex portion which is substantially axisymmetric with respect to a valve seat axis and which has a circular-arc shaped cross section, and the welded portion is also substantially axisymmetric with respect to the valve seat axis.Type: ApplicationFiled: July 6, 2011Publication date: October 27, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Naoya HASHII, Keishi NAKANO, Tsuyoshi MUNEZANE, Atsushi YOSHIMURA, Manabu MIYAKI
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Patent number: 8002207Abstract: This invention serves to suppress the deterioration of oil tightness of a valve after welding without any change in the direction of fuel injection even with deformation of a convex portion after welding of an injection opening plate to a valve seat, as well as without any variation in the direction of fuel injection due to welding variation.Type: GrantFiled: March 27, 2007Date of Patent: August 23, 2011Assignee: Mitsubishi Electric CorporationInventors: Naoya Hashii, Keishi Nakano, Tsuyoshi Munezane, Atsushi Yoshimura, Manabu Miyaki
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Publication number: 20100224705Abstract: This invention serves to suppress the deterioration of oil tightness of a valve after welding without any change in the direction of fuel injection even with deformation of a convex portion after welding of an injection opening plate to a valve seat, as well as without any variation in the direction of fuel injection due to welding variation.Type: ApplicationFiled: March 27, 2007Publication date: September 9, 2010Applicant: Mitsubishi Electric CorporationInventors: Naoya Hashii, Keishi Nakano, Tsuyoshi Munezane, Atsushi Yoshimura, Manabu Miyaki
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Patent number: 7671584Abstract: The present invention attains downsizing of a permanent magnet with a simple structure to reduce a manufacturing cost thereof. Provided is a rotation angle detection device, including: a cylindrical magnetic circuit mounted to a shaft; and non-contact sensors provided in an inner void of the magnetic circuit, in which the magnetic circuit is composed of a first yoke and a second yoke formed of a magnetic material and having a pair of flat portions parallel and opposed to each other, and a pair of permanent magnets whose magnetic poles are aligned in the same direction so that magnetic fields whose magnetic fluxes are parallel to each other are generated in the void between the flat portions, and the non-contact sensor detects a rotation angle of the shaft by detecting a change in the direction of the magnetic fluxes.Type: GrantFiled: June 9, 2006Date of Patent: March 2, 2010Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takuya Uryu, Kazuhisa Kurita, Yoshihiko Onishi, Shinya Nose, Manabu Miyaki
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Patent number: 7378841Abstract: A rotation angle detecting apparatus includes: a first permanent magnet; a second permanent magnet disposed so as to face the first permanent magnet, the second permanent magnet rotating together with a shaft; an arc-shaped first magnetic member and second magnetic member fixed to the first permanent magnet and the second permanent magnet; and a magnetic resistor disposed in an air gap formed between the first magnetic member and the second magnetic member so as to be axially aligned with the shaft, the first magnetic member and the second magnetic member each including: a projecting portion pointed at the magnetic resistor; and a wall portion surrounding the magnetic resistor so as to prevent influence from external magnetic fields.Type: GrantFiled: January 24, 2006Date of Patent: May 27, 2008Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhisa Kurita, Yoshihiko Onishi, Takuya Uryu, Manabu Miyaki
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Patent number: 7370669Abstract: Disclosed is an electromagnetic valve in which a force due to a working fluid from an inflow hole acting perpendicularly with respect to the axis of a shut-off valve is reduced to thereby reduce the sliding resistance of the shut-off valve. An electromagnetic valve according to the present invention includes: a housing (10) having an inflow hole (11), an inner flow path (12), and a discharge hole (13); a valve seat (15) secured in position inside the housing (10); a shut-off valve (16) adapted to abut one surface of the valve seat (15) to shut off the working fluid flowing into the inner flow path (12) through the inflow hole (11); and a pressure regulating valve (17) provided coaxially with the shut-off valve (16) and adapted to control, through adjustment of the dimensions of a gap between itself and the other surface of the valve seat (15), the amount of working fluid flowing to the exterior of the housing (10) through the discharge hole (13).Type: GrantFiled: October 22, 2004Date of Patent: May 13, 2008Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takuya Urya, Yuta Ichinose, Yoshihiko Onishi, Manabu Miyaki
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Publication number: 20070229061Abstract: The present invention attains downsizing of a permanent magnet with a simple structure to reduce a manufacturing cost thereof. Provided is a rotation angle detection device, including: a cylindrical magnetic circuit mounted to a shaft; and non-contact sensors provided in an inner void of the magnetic circuit, in which the magnetic circuit is composed of a first yoke and a second yoke formed of a magnetic material and having a pair of flat portions parallel and opposed to each other, and a pair of permanent magnets whose magnetic poles are aligned in the same direction so that magnetic fields whose magnetic fluxes are parallel to each other are generated in the void between the flat portions, and the non-contact sensor detects a rotation angle of the shaft by detecting a change in the direction of the magnetic fluxes.Type: ApplicationFiled: June 9, 2006Publication date: October 4, 2007Inventors: Takuya Uryu, Kazuhisa Kurita, Yoshihiko Onishi, Shinya Nose, Manabu Miyaki
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Publication number: 20070090829Abstract: A rotation angle detecting apparatus includes: a first permanent magnet; a second permanent magnet disposed so as to face the first permanent magnet, the second permanent magnet rotating together with a shaft; an arc-shaped first magnetic member and second magnetic member fixed to the first permanent magnet and the second permanent magnet; and a magnetic resistor disposed in an air gap formed between the first magnetic member and the second magnetic member so as to be axially aligned with the shaft, the first magnetic member and the second magnetic member each including: a projecting portion pointed at the magnetic resistor; and a wall portion surrounding the magnetic resistor so as to prevent influence from external magnetic fields.Type: ApplicationFiled: January 24, 2006Publication date: April 26, 2007Inventors: Kazuhisa Kurita, Yoshihiko Onishi, Takuya Uryu, Manabu Miyaki
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Publication number: 20050284524Abstract: Disclosed is an electromagnetic valve in which a force due to a working fluid from an inflow hole acting perpendicularly with respect to the axis of a shut-off valve is reduced to thereby reduce the sliding resistance of the shut-off valve. An electromagnetic valve according to the present invention includes: a housing (10) having an inflow hole (11), an inner flow path (12), and a discharge hole (13); a valve seat (15) secured in position inside the housing (10); a shut-off valve (16) adapted to abut one surface of the valve seat (15) to shut off the working fluid flowing into the inner flow path (12) through the inflow hole (11); and a pressure regulating valve (17) provided coaxially with the shut-off valve (16) and adapted to control, through adjustment of the dimensions of a gap between itself and the other surface of the valve seat (15), the amount of working fluid flowing to the exterior of the housing (10) through the discharge hole (13).Type: ApplicationFiled: October 22, 2004Publication date: December 29, 2005Inventors: Takuya Uryu, Yuta Ichinose, Yoshihiko Onishi, Manabu Miyaki
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Publication number: 20050184727Abstract: A rotation angle detection device is simple in structure and is capable of reducing the size of a permanent magnet. The permanent magnet is fixedly secured to a rotating member. A first guide member is attached at one end face to an S pole side of the permanent magnet. A second guide member is attached at one end face to an N pole side of the permanent magnet, and has its tip end disposed in opposition to a tip end of the first guide member. A magnetoresistive member is disposed in a space between the tip ends of the first and second guide members, the magnetoresistive member being fixedly attached to a non-rotating member. An angle of rotation of the rotating member is detected by detecting a change of the azimuth of magnetic flux, which is generated by the permanent magnet in the space, by means of the magnetoresistive member.Type: ApplicationFiled: June 3, 2004Publication date: August 25, 2005Inventors: Kazuhisa Kurita, Kenji Nakao, Yoshihiko Onishi, Manabu Miyaki
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Patent number: 6930477Abstract: A rotation angle detection device is simple in structure and is capable of reducing the size of a permanent magnet. The permanent magnet is fixedly secured to a rotating member. A first guide member is attached at one end face to an S pole side of the permanent magnet. A second guide member is attached at one end face to an N pole side of the permanent magnet, and has its tip end disposed in opposition to a tip end of the first guide member. A magnetoresistive member is disposed in a space between the tip ends of the first and second guide members, the magnetoresistive member being fixedly attached to a non-rotating member. An angle of rotation of the rotating member is detected by detecting a change of the azimuth of magnetic flux, which is generated by the permanent magnet in the space, by means of the magnetoresistive member.Type: GrantFiled: June 3, 2004Date of Patent: August 16, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhisa Kurita, Kenji Nakao, Yoshihiko Onishi, Manabu Miyaki
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Patent number: 6867584Abstract: In a non-contact type rotation-angle sensing device, a rotation angle sensor (9) having magnetoresistance elements detects a rotation angle of an object to be measured. The object is rotatable round a rotary shaft (2) with respect to the rotation angle sensor (9) and includes a permanent magnet (5, 6). The permanent magnet (5, 6) is disposed symmetrically about said rotary shaft (2) of said object, and a magnetic element (7, 8) is disposed on said object between said permanent magnet (5, 6) and the magnetoresistance elements. In the non-contact type rotation-angle sensing device of above constitution according to the invention, linearity is secured by reducing magnetic hysteresis of the sensor output with respect to the rotation angle, thus a small-sized permanent magnet and reduction in cost being achieved.Type: GrantFiled: April 2, 2004Date of Patent: March 15, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhisa Kurita, Kenji Nakao, Yoshihiko Onishi, Manabu Miyaki
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Patent number: 5238222Abstract: A flow control valve comprises a fixed iron core, an electromagnetic coil, a casing made of a magnetic substance in which the electromagnetic coil is received, a movable iron core, a return spring for urging the movable iron core in the opposite direction to an attractive force, a flow control valve main body provided with a fluid inlet passage and a fluid outlet passage, a valve provided at the movable iron core, and a valve seat with which the valve is in contact in a non-electric conductive state, wherein at least one of the fluid inlet and outlet passages of the fluid control valve main body is formed to restrict the maximum flow rate of the flow control valve.Type: GrantFiled: July 9, 1992Date of Patent: August 24, 1993Assignee: Mitsubishi Denki K.K.Inventors: Mamoru Sumida, Manabu Miyaki, Masayasu Miyajima