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).
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Publication number: 20240099533Abstract: 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: ApplicationFiled: September 26, 2022Publication date: March 28, 2024Inventor: Masanori ISHIKAWA
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Patent number: 11674473Abstract: 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: GrantFiled: May 7, 2021Date of Patent: June 13, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Toshiki Shinohara, Takashi Suzuki, Masanori Ishikawa
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Patent number: 11280248Abstract: 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: GrantFiled: March 30, 2018Date of Patent: March 22, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Sho Kitano, Yuji Oigawa, Kiichi Shimamura, Masanori Ishikawa, Shohma Higano
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Publication number: 20210262413Abstract: 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: ApplicationFiled: May 7, 2021Publication date: August 26, 2021Inventors: Toshiki SHINOHARA, Takashi SUZUKI, Masanori ISHIKAWA
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Publication number: 20210074496Abstract: 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: ApplicationFiled: July 22, 2020Publication date: March 11, 2021Inventors: Masanori ISHIKAWA, Eiji ISHII, Takahiro NISHIMURA
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Publication number: 20210017896Abstract: 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: ApplicationFiled: March 30, 2018Publication date: January 21, 2021Inventors: Sho KITANO, Yuji OIGAWA, Kiichi SHIMAMURA, Masanori ISHIKAWA, Shohma HIGANO
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Patent number: 10864946Abstract: 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: GrantFiled: October 25, 2018Date of Patent: December 15, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Tomoya Yoshida, Shuhei Narita, Keisuke Yamakawa, Takashi Sasaki, Ryuji Nonaka, Masanori Ishikawa, Katsumi Shiraishi, Seiji Nakano
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Patent number: 10562251Abstract: 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: GrantFiled: December 13, 2018Date of Patent: February 18, 2020Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Masanori Ishikawa
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Publication number: 20190359000Abstract: 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: ApplicationFiled: April 3, 2017Publication date: November 28, 2019Inventor: Masanori Ishikawa
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Publication number: 20190193356Abstract: 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: ApplicationFiled: December 13, 2018Publication date: June 27, 2019Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Masanori Ishikawa
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Publication number: 20190126984Abstract: 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: ApplicationFiled: October 25, 2018Publication date: May 2, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Tomoya YOSHIDA, Shuhei NARITA, Keisuke YAMAKAWA, Takashi SASAKI, Ryuji NONAKA, Masanori ISHIKAWA, Katsumi SHIRAISHI, Seiji NAKANO
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Publication number: 20190001453Abstract: 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: ApplicationFiled: April 27, 2018Publication date: January 3, 2019Applicant: OKUMA CORPORATIONInventor: Masanori ISHIKAWA
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Patent number: 10059150Abstract: 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: GrantFiled: October 10, 2012Date of Patent: August 28, 2018Assignee: The Yokohama Rubber Co., LTD.Inventor: Masanori Ishikawa
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Patent number: 10041712Abstract: 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: GrantFiled: August 27, 2015Date of Patent: August 7, 2018Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.Inventors: Masanori Ishikawa, Eiji Ishii, Sachio Sekiya, Shigeyuki Sasaki
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Publication number: 20170160104Abstract: 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: ApplicationFiled: March 31, 2015Publication date: June 8, 2017Applicants: NAMIKI SEIMITSU HOUSEKI KABUSHIKIKAISHA, ADAMANT KABUSHIKI KAISHAInventors: Renshi SAWADA, Toshihiro TAKESHITA, Takuma IWASAKI, Masanori ISHIKAWA, Chihiro OKAMOTO, Tomohide AOYAGI
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Publication number: 20160091231Abstract: 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: ApplicationFiled: August 27, 2015Publication date: March 31, 2016Inventors: Masanori ISHIKAWA, Eiji ISHII, Sachio SEKIYA, Shigeyuki SASAKI
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Publication number: 20150258857Abstract: 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: ApplicationFiled: October 10, 2012Publication date: September 17, 2015Applicant: The Yokohama Rubber co., LTD.Inventor: Masanori Ishikawa
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Publication number: 20150021414Abstract: 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: ApplicationFiled: October 9, 2014Publication date: January 22, 2015Inventors: Yoshihito YASUKAWA, Yoshio OKAMOTO, Takahiro SAITO, Masanori ISHIKAWA, Eiji ISHII, Nobuaki KOBAYASHI, Noriyuki MAEKAWA
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Patent number: 8888021Abstract: 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: GrantFiled: January 6, 2012Date of Patent: November 18, 2014Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yoshihito Yasukawa, Yoshio Okamoto, Takahiro Saito, Masanori Ishikawa, Eiji Ishii, Nobuaki Kobayashi, Noriyuki Maekawa
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Patent number: 8743267Abstract: 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: GrantFiled: October 26, 2012Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventors: Masanori Ishikawa, Seiichi Kashiwaba, Atsushi Koyama, Masayasu Mizushima, Hirokazu Shukuin