Patents by Inventor Masayuki Kyoi
Masayuki Kyoi 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: 11420282Abstract: A soldering device capable of shortening operation time of soldering and suppressing solder non-wetting is provided. A soldering device includes: a plurality of tubular solder piece guide tubes which have space therein for a solder piece supplied from a supply port to pass through; a first holding unit which holds the solder piece guide tubes; and a heating unit which heats the first holding unit. Tip end portions of the solder piece guide tubes on a soldering side are arranged on an inner side of the first holding unit.Type: GrantFiled: November 27, 2017Date of Patent: August 23, 2022Assignee: Hitachi, Ltd.Inventors: Miki Hiraoka, Shinya Kawakita, Masayuki Kyoi, Osamu Ikeda
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Publication number: 20200376580Abstract: A soldering device capable of shortening operation time of soldering and suppressing solder non-wetting is provided. A soldering device includes: a plurality of tubular solder piece guide tubes which have space therein for a solder piece supplied from a supply port to pass through; a first holding unit which holds the solder piece guide tubes; and a heating unit which heats the first holding unit. Tip end portions of the solder piece guide tubes on a soldering side are arranged on an inner side of the first holding unit.Type: ApplicationFiled: November 27, 2017Publication date: December 3, 2020Inventors: Miki HIRAOKA, Shinya KAWAKITA, Masayuki KYOI, Osamu IKEDA
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Publication number: 20160158916Abstract: The purpose of the present invention is to provide a plating stripping device that is capable of quickly stripping plating from used plated magnets without reducing the weights of the recovered magnets and recycling the magnets to manufacture new magnets. To solve this problem, the present invention provides a plating stripping device characterized by being equipped with an abrasive projection unit for projecting an abrasive to a plated magnet, a magnet fixing unit for fixing the magnet, and a motor for rotating either the magnet fixing unit or the abrasive projection unit, and characterized in that the magnet fixing unit has a movable mechanism for changing the surface of the magnet that directly faces the abrasive projection unit.Type: ApplicationFiled: August 19, 2013Publication date: June 9, 2016Inventors: Tomohiko AKAHORI, Masayuki KYOI
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Patent number: 8967927Abstract: The table on which a workpiece is put can travel on a guide rail mechanism relative to a working head with a cutting tool mounted thereon. The table is connected through a nut to a ball screw part to move in an axial direction thereof as the ball screw part rotates. One end of the ball screw part is supported by a bearing and the other end is connected to a servomotor to be rotationally driven. A hollow part is provided in the table to receive therein a damper mechanism part, which comprises a spring, a damper, and a weight, the table and the weight being arranged to enable traveling separately on guide rails. Thereby, even when the workpiece is heavy, the weight can move relative to the table to effectively damp vibrations of the table in a feed direction.Type: GrantFiled: July 2, 2010Date of Patent: March 3, 2015Assignee: Hitachi, Ltd.Inventors: Hideaki Onozuka, Koji Utsumi, Toshio Yamanaka, Masayuki Kyoi
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Publication number: 20110085869Abstract: The table on which a workpiece is put can travel on a guide rail mechanism relative to a working head with a cutting tool mounted thereon. The table is connected through a nut to a ball screw part to move in an axial direction thereof as the ball screw part rotates. One end of the ball screw part is supported by a bearing and the other end is connected to a servomotor to be rotationally driven. A hollow part is provided in the table to receive therein a damper mechanism part, which comprises a spring, a damper, and a weight, the table and the weight being arranged to enable traveling separately on guide rails. Thereby, even when the workpiece is heavy, the weight can move relative to the table to effectively damp vibrations of the table in a feed direction.Type: ApplicationFiled: July 2, 2010Publication date: April 14, 2011Applicant: Hitachi, Ltd.Inventors: Hideaki ONOZUKA, Koji Utsumi, Toshio Yamanaka, Masayuki Kyoi
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Patent number: 7889310Abstract: A transflective type liquid crystal display has display side members; rear side members which include a diffuse reflector layer with apertures, and a glass substrate; and a liquid crystal layer interposed between the display side members and the rear side members, wherein on the opposite side from the diffuse reflector layer, the glass substrate has aperture-forming lenses used for exposure and removal during formation of the apertures of the diffuse reflector layer, and a flattening layer used to flatten a concave and convex surface produced by the aperture-forming lenses. This makes it possible to implement a transflective type liquid crystal display with excellent visibility regardless of whether an external light or internal lighting source is used.Type: GrantFiled: January 17, 2007Date of Patent: February 15, 2011Assignee: Hitachi Chemical Company, Ltd.Inventors: Takehisa Yoshikawa, Masayuki Kyoi, Yasushi Sugimoto, Masato Taya, Takeshi Yoshida
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Patent number: 7822502Abstract: Using parameters such as diameters of a rough cutter and a finishing cutter, a position of a tool at cutting work completion in a rough work, a finishing cutting area, specifications of a rotating tool (the number of cutting edges, a cutting force eigenvalue, a compliance transfer function), etc., a cutting force acting on a cutting edge of the rotating tool is found, and results thereof are made use of to analyze a characteristic equation being a loop transfer function of a vibration system composed of the rotating tool and a work, whereby it is possible to predict presence of generation of self-excited vibration of the finishing cutter performed after a rough work in a shoulder cutting work. Thereby, the rotating tool operates stably in a finishing work and besides shoulder cutting of a work can be performed in a high work efficiency.Type: GrantFiled: December 26, 2007Date of Patent: October 26, 2010Assignee: Hitachi, Ltd.Inventors: Koji Utsumi, Masayuki Kyoi
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Patent number: 7810417Abstract: In a cutting method of an oblique surface by a rotary tool, for analyzing in advance a stability limit depth of cut with respect to a self-excited cutting vibration in consideration of a pick feed amount and a work oblique angle and reducing the number of steps necessary for preparation and correction of NC data, a tool diameter, the number of cutting teeth and dynamic stiffness of the rotary tool, a cutting force coefficient determined by a combination of the tool and work materials, dynamic stiffness of the work, the pick feed amount, oblique angles between the tool and the work and the like are used as input values, an initial value of the stability limit depth of cut is determined based on the input values, and calculation is performed based on the initial value.Type: GrantFiled: December 19, 2006Date of Patent: October 12, 2010Assignee: Hitachi, Ltd.Inventors: Hideaki Onozuka, Masayuki Kyoi
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Publication number: 20100129169Abstract: A corner portion working tool includes: a main body portion 4 having a space 5 through which a cutting fluid can pass; and a blade portion 8 that is provided in the main body portion 4 and can be displaced outwardly of the main body portion 4, wherein the blade portion 8 is displaced outwardly of the main body portion 4 according to a change in hydrostatic pressure of the cutting fluid having passed through the space 5, and the main body portion 4 is rotated to work a corner portion with the blade portion 8. Thus, the corner portion working tool brings the blade portion for deburring or corner portion shape forming into contact with only a hole end surface, does not reduce quality of an inner wall surface of a hole, does not select a proper rotation condition, and easily performs deburring or corner portion shape forming.Type: ApplicationFiled: November 24, 2009Publication date: May 27, 2010Applicant: Hitachi, Ltd.Inventors: Masayuki Kyoi, Hideaki Onozuka, Koji Utsumi, Ippei Kono
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Publication number: 20080215177Abstract: Using parameters such as diameters of a rough cutter and a finishing cutter, a position of a tool at cutting work completion in a rough work, a finishing cutting area, specifications of a rotating tool (the number of cutting edges, a cutting force eigenvalue, a compliance transfer function), etc., a cutting force acting on a cutting edge of the rotating tool is found, and results thereof are made use of to analyze a characteristic equation being a loop transfer function of a vibration system composed of the rotating tool and a work, whereby it is possible to predict presence of generation of self-excited vibration of the finishing cutter performed after a rough work in a shoulder cutting work. Thereby, the rotating tool operates stably in a finishing work and besides shoulder cutting of a work can be performed in a high work efficiency.Type: ApplicationFiled: December 26, 2007Publication date: September 4, 2008Inventors: Koji Utsumi, Masayuki Kyoi
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Publication number: 20070201956Abstract: In a cutting method of an oblique surface by a rotary tool, for analyzing in advance a stability limit depth of cut with respect to a self-excited cutting vibration in consideration of a pick feed amount and a work oblique angle and reducing the number of steps necessary for preparation and correction of NC data, a tool diameter, the number of cutting teeth and dynamic stiffness of the rotary tool, a cutting force coefficient determined by a combination of the tool and work materials, dynamic stiffness of the work, the pick feed amount, oblique angles between the tool and the work and the like are used as input values, an initial value of the stability limit depth of cut is determined based on the input values, and calculation is performed based on the initial value.Type: ApplicationFiled: December 19, 2006Publication date: August 30, 2007Inventors: Hideaki Onozuka, Masayuki Kyoi
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Publication number: 20070177079Abstract: A transflective type liquid crystal display has display side members; rear side members which include a diffuse reflector layer with apertures, and a glass substrate; and a liquid crystal layer interposed between the display side members and the rear side members, wherein on the opposite side from the diffuse reflector layer, the glass substrate has aperture-forming lenses used for exposure and removal during formation of the apertures of the diffuse reflector layer, and a flattening layer used to flatten a concave and convex surface produced by the aperture-forming lenses. This makes it possible to implement a transflective type liquid crystal display with excellent visibility regardless of whether an external light or internal lighting source is used.Type: ApplicationFiled: January 17, 2007Publication date: August 2, 2007Inventors: Takehisa Yoshikawa, Masayuki Kyoi, Yasushi Sugimoto, Masato Taya, Takeshi Yoshida