Patents by Inventor Makoto Fukui

Makoto Fukui 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: 11426801
    Abstract: A cutting tool comprises a rake face and a flank face, the cutting tool being composed of a substrate made of a cubic boron nitride sintered material and a coating provided on the substrate, the coating including a MAlN layer, the MAlN layer including crystal grains of MxAl1-xN in the cubic crystal system, nF<nR being satisfied, where nF represents a number of voids per 100 ?m in length of the MAlN layer on the flank face in a cross section of the MAlN layer, and nR represents a number of voids per 100 ?m in length of the MAlN layer on the rake face in a cross section of the MAlN layer, nD being 3 or less, where nD represents a number of droplets per 100 ?m in length of the MAlN layer on the flank face in a cross section of the MAlN layer.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: August 30, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Momoko Iida, Makoto Setoyama, Haruyo Fukui
  • Patent number: 11400805
    Abstract: A refueling control system for an internal combustion engine includes a fuel tank; a vapor pipe; a step motor-driven shut-off valve; a fuel filler lid; and an electronic control unit configured to, when the fuel filler lid is to be opened, i) drive the shut-off valve such that the shut-off valve is opened, ii) close the fuel filler lid when an opening degree of the shut-off valve is less than a set opening degree, and iii) open the fuel filler lid when the opening degree of the shut-off valve is greater than or equal to the set opening degree. The electronic control unit sets the set opening degree such that the set opening degree when an opening speed of the shut-off valve is low is greater than the set opening degree when the opening speed of the shut-off valve is high.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: August 2, 2022
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisan Kogyo Kabushiki Kaisha
    Inventors: Keita Fukui, Makoto Yamazaki, Yoshikazu Miyabe
  • Patent number: 11396064
    Abstract: A welding structure includes, in a cross-section of the first member and the second member when they are seen from an axial direction of the insertion hole, a plurality of welding spots, an outer periphery of the welding spots are each formed with a curve-shaped portion and two side-face portions. When two intersections where the outer side-face portion on the outer periphery of the both-end welding spots and the outer periphery of the second member intersect are defined as a first intersection and a second intersection, a weld angle formed by a first linear line linking the first intersection with a sectional center of the second member and a second linear line linking the second intersection with the sectional center of the second member is set to a first predetermined angle or more.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: July 26, 2022
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Hirofumi Hashiba, Makoto Fukui, Hiroshi Sugiura
  • Publication number: 20220226907
    Abstract: A cutting tool comprises a rake face and a flank face, the cutting tool being composed of a substrate made of a cubic boron nitride sintered material and a coating provided on the substrate, the coating including a MAlN layer, when a cross section of the MAlN layer is subjected to an electron backscattering diffraction image analysis to determine a crystal orientation of each of the crystal grains of the MxAl1?xN and a color map is created based thereon, then on the color map, the flank face having the MAlN layer occupied in area by 45% to 75% by crystal grains of the MxAl1?xN having a (111) plane with a normal thereto extending in a direction within 25 degrees with respect to a direction in which a normal to the flank face extends, the MAlN layer having a residual stress of ?2 GPa to ?0.1 GPa.
    Type: Application
    Filed: July 16, 2020
    Publication date: July 21, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Makoto SETOYAMA, Momoko IIDA, Haruyo FUKUI
  • Publication number: 20220221071
    Abstract: The air valve includes a supply valve configured to open and close an air supply passage through which the air gas to be supplied to the fuel cell stack from outside flows; a switching valve configured to switch between a state in which the air gas supplied from the outside flows through the air supply passage and a state in which the air gas supplied from the outside flows through a bypass passage that branches from the air supply passage; and a link mechanism connected to the supply valve and the switching valve and configured to actuate the supply valve and the switching valve. The link mechanism includes an arm portion fixed at the supply valve; and a cam plate fixed at the switching valve, wherein the cam plate includes a guide portion with which the arm portion is to contact.
    Type: Application
    Filed: April 9, 2020
    Publication date: July 14, 2022
    Inventors: Makoto FUKUI, Noboru ISHIHARA, Shota YAMANAKA
  • Patent number: 11370033
    Abstract: A surface coated cutting tool comprises a base material and a coating layer that coats the base material, the coating layer including an alternate layer composed of a first unit layer and a second unit layer alternately stacked, the first unit layer being composed of a nitride containing aluminum and zirconium, in the first unit layer, when the total number of metal atoms constituting the first unit layer is represented as 1, a ratio thereto of the number of atoms of the zirconium being not less than 0.65 and not more than 0.95, the second unit layer being composed of a nitride containing titanium and silicon, in the second unit layer, when the total number of metal atoms constituting the second unit layer is represented as 1, a ratio thereto of the number of atoms of the silicon being larger than 0 and not more than 0.20.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: June 28, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Haruyo Fukui, Makoto Setoyama, Keizo Tanaka, Kouhei Yoshimura
  • Publication number: 20220170553
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Application
    Filed: February 4, 2022
    Publication date: June 2, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
  • Publication number: 20220170554
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Application
    Filed: February 4, 2022
    Publication date: June 2, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
  • Patent number: 11274750
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: March 15, 2022
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi Itahara, Kazuhiro Yoneshige, Hiroshi Kawazoe, Makoto Fukui, Sadatsugu Nagata
  • Patent number: 11148536
    Abstract: In a fuel cell system, when fully closing an upstream-side valve, a controller performs controlled fully-closed opening-degree control that adjusts the opening degree of the upstream-side valve to a controlled fully-closing opening degree greater than zero by means of a drive mechanism. Upon determining that, during the controlled fully-closed opening-degree control, there is a leakage of oxidant gas in the upstream-side valve, the controller corrects the controlled fully-closed opening degree to the valve-closing side until reaching a zero-position opening degree at which the amount of leakage of the oxidant gas in the upstream-side valve becomes zero.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: October 19, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Naruto Ito, Makoto Fukui
  • Patent number: 11041577
    Abstract: A double eccentric valve: a valve seat; a rotary shaft; a valve gear with a rotary shaft base end portion; a motor rotating the shaft via a valve gear; bearings supporting the shaft in a cantilever manner; a return spring giving, to the valve gear, spring force for rotating the shaft in a valve body closing direction; and a full-close stopper to restrict valve gear rotation with the shaft when the valve body is fully closed. When the motor is not driven, the valve gear partially contacts the full-close stopper by spring force, moment acting on the valve gear is caused to act on the rotary shaft with the contact point serving as a fulcrum, the rotary shaft is tilted toward the valve seat with the contact point between the rotary shaft and the bearing serving as a fulcrum, and thus, the valve body is pressed against the valve seat.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: June 22, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Takashige Inagaki, Mamoru Yoshioka, Akihito Kuno, Makoto Fukui
  • Patent number: 10982772
    Abstract: An eccentric valve has a drive mechanism, a drive force receiving part, a bearing for supporting a rotary shaft, and a return spring for generating a return spring force. During non-operation of the drive mechanism, the eccentric valve generates a separating-direction urging force to cause the rotary shaft to incline about the bearing serving as a fulcrum and urge the valve element in a direction away from the valve seat, the separating-direction urging force being a force caused by the return spring force. Either the valve element or the valve seat is provided with a sealing member to seal between the valve element and the valve seat during non-operation of the drive mechanism.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: April 20, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Kasumi Mishima, Naruto Ito, Makoto Fukui, Takashige Inagaki, Sunao Kitamura, Hiroshi Misumi
  • Patent number: 10862147
    Abstract: In a fuel cell system, each of an inlet sealing valve and an outlet integration valve is provided with a valve seat including a valve hole and a seat surface formed on a circumferential edge of the valve hole, a valve element formed, on its outer periphery, with a seal surface corresponding to the seat surface, and a motor to move the valve element away from the valve seat upon receipt of electric power supplied from outside. The valve seat is provided with a seal member to seal between the valve element and the valve seat during non-operation of the motor. In an inlet-side bypass passage connected to an air supply passage by detouring around the inlet sealing valve, there are arranged an inlet-side bypass passage and an inlet bypass valve.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: December 8, 2020
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Naruto Ito, Makoto Fukui
  • Publication number: 20200290158
    Abstract: A welding structure includes, in a cross-section of the first member and the second member when they are seen from an axial direction of the insertion hole, a plurality of welding spots, an outer periphery of the welding spots are each formed with a curve-shaped portion and two side-face portions. When two intersections where the outer side-face portion on the outer periphery of the both-end welding spots and the outer periphery of the second member intersect are defined as a first intersection and a second intersection, a weld angle formed by a first linear line linking the first intersection with a sectional center of the second member and a second linear line linking the second intersection with the sectional center of the second member is set to a first predetermined angle or more.
    Type: Application
    Filed: November 27, 2018
    Publication date: September 17, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Hirofumi HASHIBA, Makoto FUKUI, Hiroshi SUGIURA
  • Publication number: 20200217430
    Abstract: A double eccentric valve: a valve seat; a rotary shaft; a valve gear with a rotary shaft base end portion; a motor rotating the shaft via a valve gear; bearings supporting the shaft in a cantilever manner; a return spring giving, to the valve gear, spring force for rotating the shaft in a valve body closing direction; and a full-close stopper to restrict valve gear rotation with the shaft when the valve body is fully closed. When the motor is not driven, the valve gear partially contacts the full-close stopper by spring force, moment acting on the valve gear is caused to act on the rotary shaft with the contact point serving as a fulcrum, the rotary shaft is tilted toward the valve seat with the contact point between the rotary shaft and the bearing serving as a fulcrum, and thus, the valve body is pressed against the valve seat.
    Type: Application
    Filed: July 19, 2018
    Publication date: July 9, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Takashige INAGAKI, Mamoru YOSHIOKA, Akihito KUNO, Makoto FUKUI
  • Publication number: 20200173562
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Application
    Filed: June 1, 2018
    Publication date: June 4, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
  • Publication number: 20200099069
    Abstract: In a fuel cell system, when fully closing an upstream-side valve, a controller performs controlled fully-closed opening-degree control that adjusts the opening degree of the upstream-side valve to a controlled fully-closing opening degree greater than zero by means of a drive mechanism. Upon determining that, during the controlled fully-closed opening-degree control, there is a leakage of oxidant gas in the upstream-side valve, the controller corrects the controlled fully-closed opening degree to the valve-closing side until reaching a zero-position opening degree at which the amount of leakage of the oxidant gas in the upstream-side valve becomes zero.
    Type: Application
    Filed: April 20, 2018
    Publication date: March 26, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru YOSHIOKA, Naruto ITO, Makoto FUKUI
  • Patent number: 10601058
    Abstract: In a fuel cell system, each of an inlet sealing valve and an outlet integration valve is provided with a valve seat including a valve hole and a seat surface formed on a circumferential edge of the valve hole, a valve element formed, on its outer periphery, with a seal surface corresponding to the seat surface, and a motor to move the valve element away from the valve seat upon receipt of electric power supplied from outside. The valve seat is provided with a seal member to seal between the valve element and the valve seat during non-operation of the motor. In an inlet-side bypass passage connected to an air supply passage by detouring around the inlet sealing valve, there are arranged an inlet-side bypass passage and an inlet bypass valve.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: March 24, 2020
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Naruto Ito, Makoto Fukui
  • Patent number: 10505210
    Abstract: A fuel cell system uses, as an inlet sealing valve, an eccentric valve having a rubber seat provided with a seal part having such a shape as to increase the surface pressure of a portion in contact with a seal surface of a valve element when pressure in an air supply passage rises. Each of an outlet integration valve and a bypass valve is constituted of an eccentric valve basically identical in structure to the inlet sealing valve. When supply of air to a fuel cell stack is to be stopped during deceleration of a vehicle, a controller closes the inlet sealing valve and opens the bypass valve and, after the inlet sealing valve is fully closed, closes the bypass valve.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 10, 2019
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Naruto Ito, Makoto Fukui, Hiroshi Sugiura, Toshiyuki Fujimura, Kasumi Mishima
  • Publication number: 20190372139
    Abstract: In a fuel cell system, each of an inlet sealing valve and an outlet integration valve is provided with a valve seat including a valve hole and a seat surface formed on a circumferential edge of the valve hole, a valve element formed, on its outer periphery, with a seal surface corresponding to the seat surface, and a motor to move the valve element away from the valve seat upon receipt of electric power supplied from outside. The valve seat is provided with a seal member to seal between the valve element and the valve seat during non-operation of the motor. In an inlet-side bypass passage connected to an air supply passage by detouring around the inlet sealing valve, there are arranged an inlet-side bypass passage and an inlet bypass valve.
    Type: Application
    Filed: August 13, 2019
    Publication date: December 5, 2019
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru YOSHIOKA, Naruto Ito, Makoto Fukui