Patents by Inventor Michio Matsumoto

Michio Matsumoto 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: 10948099
    Abstract: A motor operated valve includes a feed screw mechanism and a stopper mechanism. The feed screw mechanism includes a guiding part including an external thread portion on an outer surface thereof, and a guided part that is a cylindrical member constituting a rotation shaft of a rotor, and including an internal thread portion, which is engaged with the external thread portion, on an inner surface thereof. The stopper mechanism includes a stopper portion provided on the guided part, and a stopping face formed integrally with the guiding part. When a valve element is driven by the motor to move in a valve closing direction, the stopping face stops the stopper portion to restrict the movement of the rotor in the valve closing direction.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 16, 2021
    Assignee: TGK CO., LTD.
    Inventors: Michio Matsumoto, Shinji Saeki, Youichi Miura, Tomohiro Yuasa
  • Publication number: 20200263800
    Abstract: A motor operated valve includes a feed screw mechanism and a stopper mechanism. The feed screw mechanism includes a guiding part including an external thread portion on an outer surface thereof, and a guided part that is a cylindrical member constituting a rotation shaft of a rotor, and including an internal thread portion, which is engaged with the external thread portion, on an inner surface thereof. The stopper mechanism includes a stopper portion provided on the guided part, and a stopping face formed integrally with the guiding part. When a valve element is driven by the motor to move in a valve closing direction, the stopping face stops the stopper portion to restrict the movement of the rotor in the valve closing direction.
    Type: Application
    Filed: February 4, 2020
    Publication date: August 20, 2020
    Inventors: Michio MATSUMOTO, Shinji SAEKI, Youichi MIURA, Tomohiro YUASA
  • Patent number: 10030155
    Abstract: An ionic liquid can disperse graphene at a high concentration. The ionic liquid can be represented by general formula (1): in which R1 and R5 may be the same or different and each independently represents a substituted or unsubstituted C1-7 linear or branched alkyl group; R2 is represented by formula (2): in which R6 and R7 may be the same or different and each independently represents a C1-4 linear or branched alkylene group, and m represents an integer of 1-5; R3 and R4 may be the same or different and each independently represent a hydrogen atom, substituted or unsubstituted C1-4 linear or branched alkyl group; X? represents a counter ion; and n represents 0-30.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: July 24, 2018
    Assignee: THE UNIVERSITY OF TOKYO
    Inventors: Takuzo Aida, Chiyoung Park, Saisuwan Ravi, Michio Matsumoto
  • Patent number: 9285054
    Abstract: A control valve according to an embodiment includes a guide member of a cylindrical shape extending coaxially with a valve hole, a valve element of a bottomed cylindrical shape for opening and closing a valve section such that the valve element touches and leaves the valve hole, and a pressure-canceling structure for canceling out at least part of pressure acting on the valve element by introducing a working fluid into a back pressure chamber via a leak passage, the pressure-canceling structure including the back pressure chamber, surrounded by the valve element and the guide member, and the leak passage communicating between the valve hole and the back pressure chamber. A sliding portion and a spacing are formed in an overlapped portion which is a region overlapped by the valve element and the guide member.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: March 15, 2016
    Assignee: TGK CO., LTD.
    Inventors: Michio Matsumoto, Isao Sendo, Masaaki Tonegawa
  • Publication number: 20150233487
    Abstract: In an electromagnetic valve, a solenoid includes a cylindrical bobbin, an electromagnetic coil wound around the bobbin, a yoke that surrounds the electromagnetic coil, a fixed iron core that is fixed, coaxially with the bobbin, to the yoke, and a movable iron core arranged counter to the fixed iron core inside the bobbin in a direction of axis line. The movable iron core including a first iron core that is inserted into the bobbin such that the first iron core is displaceable in the direction of axis line, and a second iron core formed integrally with the first iron core in a position opposite to the fixed iron core, the second iron core being arranged counter to an end surface of the yoke outside the bobbin in the direction of axis line.
    Type: Application
    Filed: February 10, 2015
    Publication date: August 20, 2015
    Inventors: Michio Matsumoto, Isao Sendo
  • Publication number: 20150137027
    Abstract: An ionic liquid can disperse graphene at a high concentration. The ionic liquid can be represented by general formula (1): in which R1 and R5 may be the same or different and each independently represents a substituted or unsubstituted C1-7 linear or branched alkyl group; R2 is represented by formula (2): in which R6 and R7 may be the same or different and each independently represents a C1-4 linear or branched alkylene group, and m represents an integer of 1-5; R3 and R4 may be the same or different and each independently represent a hydrogen atom, substituted or unsubstituted C1-4 linear or branched alkyl group; X? represents a counter ion; and n represents 0-30.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 21, 2015
    Inventors: Takuzo Aida, Chiyoung Park, Saisuwan Ravi, Michio Matsumoto
  • Publication number: 20130082199
    Abstract: A control valve according to an embodiment includes a guide member of a cylindrical shape extending coaxially with a valve hole, a valve element of a bottomed cylindrical shape for opening and closing a valve section such that the valve element touches and leaves the valve hole, and a pressure-canceling structure for canceling out at least part of pressure acting on the valve element by introducing a working fluid into a back pressure chamber via a leak passage, the pressure-canceling structure including the back pressure chamber, surrounded by the valve element and the guide member, and the leak passage communicating between the valve hole and the back pressure chamber. A sliding portion and a spacing are formed in an overlapped portion which is a region overlapped by the valve element and the guide member.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 4, 2013
    Inventors: Michio Matsumoto, Isao Sendo, Masaaki Tonegawa
  • Patent number: 7316118
    Abstract: To provide an expansion valve having a low-pressure passage that is bent at right angles therein, which is reduced in untoward noise and noise of the flow of refrigerant generated when the refrigerant passes through the low-pressure passage. In an intersecting portion of a low-pressure passage, the axis of a port for introducing refrigerant returned from an evaporator, and the axis of a port for guiding out refrigerant having passed through a body block to a compressor are orthogonal to each other. A hole is formed in the body block in a direction of insertion of a shaft that transmits a driving force from a power element to a valve element, and a holder for holding the shaft.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: January 8, 2008
    Assignee: TGK Co., Ltd.
    Inventors: Hisatoshi Hirota, Michio Matsumoto
  • Publication number: 20060196201
    Abstract: To provide an expansion valve capable of enhancing manufacturing efficiency of a body and yield from material, thereby reducing manufacturing costs thereof. According to the expansion valve of the present invention, a body is formed by die casting an aluminum alloy, and hence even when the body has a complicated shape, it is possible to easily manufacture the body. Further, even a valve seat, which is difficult to form by extrusion, can be formed integrally with the body, and hence the manufacturing efficiency of the body can be enhanced. Furthermore, component parts, such as the valve seat and the like, conventionally formed by cutting, are also formed integrally with the body by die casting, and hence it is possible to enhance yield from material to reduce manufacturing costs of the expansion valve.
    Type: Application
    Filed: March 3, 2006
    Publication date: September 7, 2006
    Applicant: TGK CO., LTD.
    Inventors: Isao Sendo, Michio Matsumoto, Takeshi Watanabe, Takanao Kumakura
  • Patent number: 6966172
    Abstract: A gas turbine exhaust passage is realized which may suppress the radiation of strong ultra low frequency noise to the outside without amplifying the turbulence of an high speed exhaust gas flow rate or a pressure pulsation generated in a gas turbine. At least a portion of a wall of a gas turbine exhaust passage (3, 5) is formed of an acoustically transmissive material (36, 56) for allowing a low frequency noise of several tens of Hz or less to pass therethrough sufficiently. Also, the acoustically transmissive material is made of one or more of a porous material, a porous heat insulating material, a mesh having a large flow resistance, cloth or film material. Further, the acoustically transmissive material is supported by a porous plate or a frame. In a case where an acoustically transmissive material is used only for an exhaust chimney (5), the exhaust chimney (5) is supported by a rack (11). Further, a soundproof panel (12) may be attached to the rack (11).
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: November 22, 2005
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masaharu Nishimura, Masazumi Kataoka, Michio Matsumoto, Yoshifumi Masuda
  • Publication number: 20050188673
    Abstract: A gas turbine exhaust passage is realized which may suppress the radiation of strong ultra low frequency noise to the outside without amplifying the turbulence of an high speed exhaust gas flow rate or a pressure pulsation generated in a gas turbine. At least a portion of a wall of a gas turbine exhaust passage (3, 5) is formed of an acoustically transmissive material (36, 56) for allowing a low frequency noise of several tens of Hz or less to pass therethrough sufficiently. Also, the acoustically transmissive material is made of one or more of a porous material, a porous heat insulating material, a mesh having a large flow resistance, cloth or film material. Further, the acoustically transmissive material is supported by a porous plate or a frame. In a case where an acoustically transmissive material is used only for an exhaust chimney (5), the exhaust chimney (5) is supported by a rack (11). Further, a soundproof panel (12) may be attached to the rack (11).
    Type: Application
    Filed: November 21, 2003
    Publication date: September 1, 2005
    Inventors: Masaharu Nishimura, Masazumi Kataoka, Michio Matsumoto, Yoshifumi Masuda
  • Publication number: 20050016208
    Abstract: To provide an expansion valve having a low-pressure passage that is bent at right angles therein, which is reduced in untoward noise and noise of the flow of refrigerant generated when the refrigerant passes through the low-pressure passage. In an intersecting portion of a low-pressure passage, the axis of a port for introducing refrigerant returned from an evaporator, and the axis of a port for guiding out refrigerant having passed through a body block to a compressor are orthogonal to each other. A hole is formed in the body block in a direction of insertion of a shaft that transmits a driving force from a power element to a valve element, and a holder for holding the shaft.
    Type: Application
    Filed: July 14, 2004
    Publication date: January 27, 2005
    Applicant: TGK CO., LTD.
    Inventors: Hisatoshi Hirota, Michio Matsumoto
  • Patent number: 6766131
    Abstract: A liquid electrophotographic developing apparatus including a developing unit with an elongated opening disposed adjacent to a photoreceptor and an air duct provided around the elongated opening. The air flow in the air duct has a predetermined air pressure to hold a liquid developer within a space substantially between the developing unit and the image-bearing surface while permitting toner particles in the liquid developer deposited on the image-bearing surface to be retained by the image—bearing surface and volatile solvent to be vaporized.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: July 20, 2004
    Assignee: Aetas Technology Incorporated
    Inventors: Yuji Hiraoka, Michio Matsumoto, Takeo Endo
  • Patent number: 6668540
    Abstract: A gas turbine exhaust passage is realized which may suppress the radiation of strong ultra low frequency noise to the outside without amplifying the turbulence of an high speed exhaust gas flow rate or a pressure pulsation generated in a gas turbine. At least a portion of a wall of a gas turbine exhaust passage (3, 5) is formed of an acoustically transmissive material (36, 56) for allowing a low frequency noise of several tens of Hz or less to pass therethrough sufficiently. Also, the acoustically transmissive material is made of one or more of a porous material, a porous heat insulating material, a mesh having a large flow resistance, cloth or film material. Further, the acoustically transmissive material is supported by a porous plate or a frame. In a case where an acoustically transmissive material is used only for an exhaust chimney (5), the exhaust chimney (5) is supported by a rack (11). Further, a soundproof panel (12) may be attached to the rack (11).
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: December 30, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masaharu Nishimura, Masazumi Kataoka, Michio Matsumoto, Yoshifumi Masuda
  • Publication number: 20030136101
    Abstract: A gas turbine exhaust passage is realized which may suppress the radiation of strong ultra low frequency noise to the outside without amplifying the turbulence of an high speed exhaust gas flow rate or a pressure pulsation generated in a gas turbine. At least a portion of a wall of a gas turbine exhaust passage (3, 5) is formed of an acoustically transmissive material (36, 56) for allowing a low frequency noise of several tens of Hz or less to pass therethrough sufficiently. Also, the acoustically transmissive material is made of one or more of a porous material, a porous heat insulating material, a mesh having a large flow resistance, cloth or film material. Further, the acoustically transmissive material is supported by a porous plate or a frame. In a case where an acoustically transmissive material is used only for an exhaust chimney (5), the exhaust chimney (5) is supported by a rack (11). Further, a soundproof panel (12) may be attached to the rack (11).
    Type: Application
    Filed: January 8, 2003
    Publication date: July 24, 2003
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masaharu Nishimura, Masazumi Kataoka, Michio Matsumoto, Yoshifumi Masuda
  • Patent number: 6539702
    Abstract: A gas turbine exhaust passage is realized which may suppress the radiation of strong ultra low frequency noise to the outside without amplifying the turbulence of an high speed exhaust gas flow rate or a pressure pulsation generated in a gas turbine. At least a portion of a wall of a gas turbine exhaust passage (3, 5) is formed of an acoustically transmissive material (36, 56) for allowing a low frequency noise of several tens of Hz or less to pass therethrough sufficiently. Also, the acoustically transmissive material is made of one or more of a porous material, a porous heat insulating material, a mesh having a large flow resistance, cloth or film material. Further, the acoustically transmissive material is supported by a porous plate or a frame. In a case where an acoustically transmissive material is used only for an exhaust chimney (5), the exhaust chimney (5) is supported by a rack (11). Further, a soundproof panel (12) may be attached to the rack (11).
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: April 1, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masaharu Nishimura, Masazumi Kataoka, Michio Matsumoto, Yoshifumi Masuda
  • Patent number: 6484137
    Abstract: An audio reproducing apparatus comprises: audio decoding means for decoding an input audio signal frame by frame; data expanding/compressing means for subjecting data in a decoded frame to time-scale modification process; a frame sequence table which contains a sequence determined according to a given speed rate in which respective frames are expanded/compressed; frame counting means for counting the number of frames of the input audio signal; and data expansion/compression control means for instructing the dalta expanding/compressing means to subject the frame to one of time-scale compression process, time-scale expansion process, and process without time-scale modification process, with reference to the frame sequence table based on a count value output from the frame counting means, the data expanding/compressing means subjecting the audio signal to time-scale modification process in accordance with an instruction signal from the data expansion/compression control means.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: November 19, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hirotsugu Taniguchi, Masayuki Misaki, Junichi Tagawa, Michio Matsumoto
  • Publication number: 20020011065
    Abstract: A gas turbine exhaust passage is realized which may suppress the radiation of strong ultra low frequency noise to the outside without amplifying the turbulence of an high speed exhaust gas flow rate or a pressure pulsation generated in a gas turbine. At least a portion of a wall of a gas turbine exhaust passage (3, 5) is formed of an acoustically transmissive material (36, 56) for allowing a low frequency noise of several tens of Hz or less to pass therethrough sufficiently. Also, the acoustically transmissive material is made of one or more of a porous material, a porous heat insulating material, a mesh having a large flow resistance, cloth or film material. Further, the acoustically transmissive material is supported by a porous plate or a frame. In a case where an acoustically transmissive material is used only for an exhaust chimney (5), the exhaust chimney (5) is supported by a rack (11). Further, a soundproof panel (12) may be attached to the rack (11).
    Type: Application
    Filed: September 22, 1998
    Publication date: January 31, 2002
    Inventors: MASAHARU NISHIMURA, MASAZUMI KATAOKA, MICHIO MATSUMOTO, YOSHIFUMI MASUDA
  • Patent number: D611123
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: March 2, 2010
    Assignee: TGK Co., Ltd.
    Inventor: Michio Matsumoto
  • Patent number: D621475
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: August 10, 2010
    Assignee: TGK Co., Ltd.
    Inventor: Michio Matsumoto