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).

  • Patent number: 11420282
    Abstract: 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: Grant
    Filed: November 27, 2017
    Date of Patent: August 23, 2022
    Assignee: Hitachi, Ltd.
    Inventors: Miki Hiraoka, Shinya Kawakita, Masayuki Kyoi, Osamu Ikeda
  • Publication number: 20200376580
    Abstract: 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: Application
    Filed: November 27, 2017
    Publication date: December 3, 2020
    Inventors: Miki HIRAOKA, Shinya KAWAKITA, Masayuki KYOI, Osamu IKEDA
  • Publication number: 20160158916
    Abstract: 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: Application
    Filed: August 19, 2013
    Publication date: June 9, 2016
    Inventors: Tomohiko AKAHORI, Masayuki KYOI
  • Patent number: 8967927
    Abstract: 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: Grant
    Filed: July 2, 2010
    Date of Patent: March 3, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Hideaki Onozuka, Koji Utsumi, Toshio Yamanaka, Masayuki Kyoi
  • Publication number: 20110085869
    Abstract: 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: Application
    Filed: July 2, 2010
    Publication date: April 14, 2011
    Applicant: Hitachi, Ltd.
    Inventors: Hideaki ONOZUKA, Koji Utsumi, Toshio Yamanaka, Masayuki Kyoi
  • Patent number: 7889310
    Abstract: 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: Grant
    Filed: January 17, 2007
    Date of Patent: February 15, 2011
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Takehisa Yoshikawa, Masayuki Kyoi, Yasushi Sugimoto, Masato Taya, Takeshi Yoshida
  • Patent number: 7822502
    Abstract: 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: Grant
    Filed: December 26, 2007
    Date of Patent: October 26, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Koji Utsumi, Masayuki Kyoi
  • Patent number: 7810417
    Abstract: 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: Grant
    Filed: December 19, 2006
    Date of Patent: October 12, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Hideaki Onozuka, Masayuki Kyoi
  • Publication number: 20100129169
    Abstract: 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: Application
    Filed: November 24, 2009
    Publication date: May 27, 2010
    Applicant: Hitachi, Ltd.
    Inventors: Masayuki Kyoi, Hideaki Onozuka, Koji Utsumi, Ippei Kono
  • Publication number: 20080215177
    Abstract: 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: Application
    Filed: December 26, 2007
    Publication date: September 4, 2008
    Inventors: Koji Utsumi, Masayuki Kyoi
  • Publication number: 20070201956
    Abstract: 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: Application
    Filed: December 19, 2006
    Publication date: August 30, 2007
    Inventors: Hideaki Onozuka, Masayuki Kyoi
  • Publication number: 20070177079
    Abstract: 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: Application
    Filed: January 17, 2007
    Publication date: August 2, 2007
    Inventors: Takehisa Yoshikawa, Masayuki Kyoi, Yasushi Sugimoto, Masato Taya, Takeshi Yoshida