Patents by Inventor Masanori Ishikawa

Masanori Ishikawa 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).

  • Publication number: 20240099533
    Abstract: A boarding sweeper comprises a cleaning working unit capable of executing cleaning work, a seat portion for seating a user, an operation input unit that allows the user to input a driving operation, and a battery holder that detachably holds a battery unit, wherein, when an area on one lateral side with respect to a virtual line passing through in a front-and-rear direction of a vehicle body in plan view is defined as a first area and an area on the other lateral side is defined as a second area, the cleaning working unit, the seat portion, and the operation input unit are disposed in the first area, and the battery holder is disposed in the second area.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 28, 2024
    Inventor: Masanori ISHIKAWA
  • Patent number: 11674473
    Abstract: An engine includes a cylinder block in which a cylinder is formed, a piston arranged to be reciprocally movable in the cylinder, a cylinder head that is arranged on an upper side of the cylinder block and forms a combustion chamber between an inner peripheral surface of the cylinder and an upper surface of the piston, and an ignition plug arranged in the cylinder head. An inner peripheral portion of the cylinder head includes an inner peripheral side portion formed to be flush with the inner peripheral surface of the cylinder, and a tilting portion tilting from the upper surface of the piston to a side surface is formed on the piston.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: June 13, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Toshiki Shinohara, Takashi Suzuki, Masanori Ishikawa
  • Patent number: 11280248
    Abstract: Provided is a general-purpose engine having a sufficient cooling function. A general-purpose engine 1 is provided with: an engine body 10 which has an exhaust system component 13 connected to a cylinder 11; and a cooling mechanism 9 which cools the engine body 10. The cooling mechanism 9 is provided with: a cooling fan 90 which rotates to generate a cooling air flow; a discharge section 92 which discharges the cooling air flow generated by the rotation of the cooling fan 90; and an air guide 93 which guides, toward the cylinder 11 and the exhaust system component 13, the cooling air flow discharged from the discharge section 92.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: March 22, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Sho Kitano, Yuji Oigawa, Kiichi Shimamura, Masanori Ishikawa, Shohma Higano
  • Publication number: 20210262413
    Abstract: An engine includes a cylinder block in which a cylinder is formed, a piston arranged to be reciprocally movable in the cylinder, a cylinder head that is arranged on an upper side of the cylinder block and forms a combustion chamber between an inner peripheral surface of the cylinder and an upper surface of the piston, and an ignition plug arranged in the cylinder head. An inner peripheral portion of the cylinder head includes an inner peripheral side portion formed to be flush with the inner peripheral surface of the cylinder, and a tilting portion tilting from the upper surface of the piston to a side surface is formed on the piston.
    Type: Application
    Filed: May 7, 2021
    Publication date: August 26, 2021
    Inventors: Toshiki SHINOHARA, Takashi SUZUKI, Masanori ISHIKAWA
  • Publication number: 20210074496
    Abstract: To attempt to reduce the sizes of apparatuses while ensuring insulation performance with simpler configurations. In a gas circuit breaker according to the present invention, a high-temperature-gas guiding section is provided at an axial-end section of a fixed main conductor that is connected to a fixed lead conductor connected to a power system, and that has an open section for discharging an insulating gas having an increased temperature and an increased pressure due to an arc produced at the time of interruption. The high-temperature-gas guiding section has a plurality of holes for discharging, into a filled container, a high-temperature gas produced by heating the insulating gas filling the filled container, and is formed such that the directions of the plurality of holes are oblique to the axial direction of the fixed main conductor.
    Type: Application
    Filed: July 22, 2020
    Publication date: March 11, 2021
    Inventors: Masanori ISHIKAWA, Eiji ISHII, Takahiro NISHIMURA
  • Publication number: 20210017896
    Abstract: Provided is a general-purpose engine having a sufficient cooling function. A general-purpose engine 1 is provided with: an engine body 10 which has an exhaust system component 13 connected to a cylinder 11; and a cooling mechanism 9 which cools the engine body 10. The cooling mechanism 9 is provided with: a cooling fan 90 which rotates to generate a cooling air flow; a discharge section 92 which discharges the cooling air flow generated by the rotation of the cooling fan 90; and an air guide 93 which guides, toward the cylinder 11 and the exhaust system component 13, the cooling air flow discharged from the discharge section 92.
    Type: Application
    Filed: March 30, 2018
    Publication date: January 21, 2021
    Inventors: Sho KITANO, Yuji OIGAWA, Kiichi SHIMAMURA, Masanori ISHIKAWA, Shohma HIGANO
  • Patent number: 10864946
    Abstract: In order to increase road noise transmission loss, a double-wall panel includes a core material. The core material is enclosed between an outer wall and an inner wall facing each other, and has at least a predetermined thickness across the panel in all in-plane directions of the walls. The core material has a specific surface area of 20,000 (mm2/cm3) or more, where the specific surface area is defined as a surface area per unit volume.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: December 15, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Tomoya Yoshida, Shuhei Narita, Keisuke Yamakawa, Takashi Sasaki, Ryuji Nonaka, Masanori Ishikawa, Katsumi Shiraishi, Seiji Nakano
  • Patent number: 10562251
    Abstract: A mold 6 includes multiple segments 24 arranged in the circumferential direction so as to form a ring shape, and a pair of side plates 26, 28 positioned on an inner side in the radial direction, at end portions, in an axial direction, of the multiple segments 24. The side plates 26, 28 respectively have outer circumferential surfaces 26b, 28b which contact with the multiple segments 24 arranged in the ring shape. Each of the segments 24 includes a first contact surface 36 which contacts with the outer circumferential surface 26b of the upper side plate 26, and a second contact surface 38 which contacts with the outer circumferential surface 28b of the lower side plate 28. A radius R1 of the first contact surface 36 is greater than a radius R2 of the second contact surface 38.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: February 18, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Masanori Ishikawa
  • Publication number: 20190359000
    Abstract: A pneumatic tire includes a carcass layer and a belt layer disposed outward of the carcass layer in the tire radial direction, and also includes, in a tread surface thereof, a plurality of circumferential main grooves and a plurality of land portions defined by the circumferential main grooves. In addition, when the tire is mounted on a specified rim, is inflated to 5% of a specified internal pressure, and is in an unloaded state, upon defining points P1, P2, and P3 on a carcass profile, a distance Da in the tire radial direction from an intersection point P1 to a point P2 and a distance Db in the tire radial direction from the point P2 to a point P3 have a relationship of Db?Da.
    Type: Application
    Filed: April 3, 2017
    Publication date: November 28, 2019
    Inventor: Masanori Ishikawa
  • Publication number: 20190193356
    Abstract: A mold 6 includes multiple segments 24 arranged in the circumferential direction so as to form a ring shape, and a pair of side plates 26, 28 positioned on an inner side in the radial direction, at end portions, in an axial direction, of the multiple segments 24. The side plates 26, 28 respectively have outer circumferential surfaces 26b, 28b which contact with the multiple segments 24 arranged in the ring shape. Each of the segments 24 includes a first contact surface 36 which contacts with the outer circumferential surface 26b of the upper side plate 26, and a second contact surface 38 which contacts with the outer circumferential surface 28b of the lower side plate 28. A radius R1 of the first contact surface 36 is greater than a radius R2 of the second contact surface 38.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 27, 2019
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Masanori Ishikawa
  • Publication number: 20190126984
    Abstract: In order to increase road noise transmission loss, a double-wall panel includes a core material. The core material is enclosed between an outer wall and an inner wall facing each other, and has at least a predetermined thickness across the panel in all in-plane directions of the walls. The core material has a specific surface area of 20,000 (mm2/cm3) or more, where the specific surface area is defined as a surface area per unit volume.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 2, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Tomoya YOSHIDA, Shuhei NARITA, Keisuke YAMAKAWA, Takashi SASAKI, Ryuji NONAKA, Masanori ISHIKAWA, Katsumi SHIRAISHI, Seiji NAKANO
  • Publication number: 20190001453
    Abstract: A machine tool includes a shielding cover, a door, and an automatic tool changer. The shielding cover covers a machining space of a main spindle. The door opens and closes an opening disposed in the shielding cover. The automatic tool changer automatically exchanges a tool to be mounted to the main spindle. The automatic tool changer exchanges the tool to be mounted to the main spindle by turning an arm in a plane perpendicular to the main spindle so as to cause the arm to enter into and exit from the machining space. The arm is configured to grip and release the tool. The turning of the arm is synchronized with the opening and closing movement of the door.
    Type: Application
    Filed: April 27, 2018
    Publication date: January 3, 2019
    Applicant: OKUMA CORPORATION
    Inventor: Masanori ISHIKAWA
  • Patent number: 10059150
    Abstract: A pneumatic tire comprises: a carcass layer, a belt layer, and a tread rubber. The belt layer is formed by laminating a pair of cross belts having a belt angle of not less than 10° and not more than 45° in absolute terms and of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to the tire circumferential direction. A distance (Gcc) from a tread profile to a tire inner circumference surface along a tire equatorial plane, a distance (Gsh) from a tread end to the tire inner circumference surface, and a distance (Ge) from the tread profile to the tire inner circumference surface at an end portion on the outer side of the circumferential reinforcing layer in the tire width direction have relationships satisfying 1.10?Gsh/Gcc and 1.00?Ge/Gcc?1.10.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: August 28, 2018
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Masanori Ishikawa
  • Patent number: 10041712
    Abstract: A refrigerant distributor includes an inlet pipe, a header pipe to which the inlet pipe has been connected and a plurality of refrigerant pipes connected to one end side of the header pipe which is opposite to the side that the inlet pipe is connected, below the inlet pipe in a vertical direction, and is configured such that a refrigerant which has flown into the header pipe through the inlet pipe is distributed into the plurality of refrigerant pipes. The header pipe is arranged such that a vertical upper side of the header pipe is inclined toward the one end side that the refrigerant pipes are connected. Thereby, it is possible to stably distribute the refrigerant to each refrigerant pipe while suppressing an increase in cost under flow rate conditions ranging from a rated operation condition to a low rotating speed operation condition.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: August 7, 2018
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Masanori Ishikawa, Eiji Ishii, Sachio Sekiya, Shigeyuki Sasaki
  • Publication number: 20170160104
    Abstract: Disclosed is a reflective encoder which is capable of measuring movement amount and detecting movement direction by using one emergent light beam, and achieving high reliability and miniaturization through a simple structure. In the reflective encoder, a light beam emitted by a laser oscillator is caused to be incident on a reflective diffraction grating disposed on a side of a scale, and diffracted light beams reflected by the reflective diffraction grating are received by light receiving elements. An interference optical system is provided between the light receiving elements and the reflective diffraction grating. An optical system is thus constructed to measure movement amount and detect movement direction by using only one emergent light beam.
    Type: Application
    Filed: March 31, 2015
    Publication date: June 8, 2017
    Applicants: NAMIKI SEIMITSU HOUSEKI KABUSHIKIKAISHA, ADAMANT KABUSHIKI KAISHA
    Inventors: Renshi SAWADA, Toshihiro TAKESHITA, Takuma IWASAKI, Masanori ISHIKAWA, Chihiro OKAMOTO, Tomohide AOYAGI
  • Publication number: 20160091231
    Abstract: A refrigerant distributor includes an inlet pipe, a header pipe to which the inlet pipe has been connected and a plurality of refrigerant pipes connected to one end side of the header pipe which is opposite to the side that the inlet pipe is connected, below the inlet pipe in a vertical direction, and is configured such that a refrigerant which has flown into the header pipe through the inlet pipe is distributed into the plurality of refrigerant pipes. The header pipe is arranged such that a vertical upper side of the header pipe is inclined toward the one end side that the refrigerant pipes are connected. Thereby, it is possible to stably distribute the refrigerant to each refrigerant pipe while suppressing an increase in cost under flow rate conditions ranging from a rated operation condition to a low rotating speed operation condition.
    Type: Application
    Filed: August 27, 2015
    Publication date: March 31, 2016
    Inventors: Masanori ISHIKAWA, Eiji ISHII, Sachio SEKIYA, Shigeyuki SASAKI
  • Publication number: 20150258857
    Abstract: A pneumatic tire comprises: a carcass layer, a belt layer, and a tread rubber. The belt layer is formed by laminating a pair of cross belts having a belt angle of not less than 10° and not more than 45° in absolute terms and of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to the tire circumferential direction. A distance (Gcc) from a tread profile to a tire inner circumference surface along a tire equatorial plane, a distance (Gsh) from a tread end to the tire inner circumference surface, and a distance (Ge) from the tread profile to the tire inner circumference surface at an end portion on the outer side of the circumferential reinforcing layer in the tire width direction have relationships satisfying 1.10?Gsh/Gcc and 1.00?Ge/Gcc?1.10.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 17, 2015
    Applicant: The Yokohama Rubber co., LTD.
    Inventor: Masanori Ishikawa
  • Publication number: 20150021414
    Abstract: A fuel injection valve includes: a swirl chamber having an inner peripheral wall formed to be gradually increased in curvature toward a downstream side from an upstream side; a swirl passage, through which a fuel is introduced into the swirl chamber; and a fuel injection port opened to the swirl chamber, wherein the swirl chamber and the swirl passage are formed so that a side wall of the swirl passage connected to a downstream end side of the swirl chamber, or an extension thereof is made not to intersect a downstream side portion of the inner peripheral wall of the swirl chamber, or an extension thereof,
    Type: Application
    Filed: October 9, 2014
    Publication date: January 22, 2015
    Inventors: Yoshihito YASUKAWA, Yoshio OKAMOTO, Takahiro SAITO, Masanori ISHIKAWA, Eiji ISHII, Nobuaki KOBAYASHI, Noriyuki MAEKAWA
  • Patent number: 8888021
    Abstract: A fuel injection valve includes: a swirl chamber having an inner peripheral wall formed to be gradually increased in curvature toward a downstream side from an upstream side; a swirl passage, through which a fuel is introduced into the swirl chamber; and a fuel injection port opened to the swirl chamber, wherein the swirl chamber and the swirl passage are formed so that a side wall of the swirl passage connected to a downstream end side of the swirl chamber, or an extension thereof is made not to intersect a downstream side portion of the inner peripheral wall of the swirl chamber, or an extension thereof.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: November 18, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yoshihito Yasukawa, Yoshio Okamoto, Takahiro Saito, Masanori Ishikawa, Eiji Ishii, Nobuaki Kobayashi, Noriyuki Maekawa
  • Patent number: 8743267
    Abstract: An optical apparatus includes a first driver configured to drive a focus lens unit in autofocusing, a second driver configured to drive the focus lens unit in the autofocusing, a first detector configured to detect a driving amount of the first driver, a second detector configured to detect a driving amount of the second driver, a memory configured to store a relationship between information of detection results of the first and second detectors, and an object distance as a distance from the optical apparatus to an object, and a controller configured to obtain information of the object distance based upon the relationship stored in the memory and the detection results of the first and second detectors.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: June 3, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Ishikawa, Seiichi Kashiwaba, Atsushi Koyama, Masayasu Mizushima, Hirokazu Shukuin