Patents by Inventor Masahiro Kawahara

Masahiro Kawahara 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: 10263273
    Abstract: A cell voltage control unit is provided on a lower surface of a stack body of a fuel cell stack. The cell voltage control unit is connected to cell voltage terminals for monitoring cell voltage. A protection member is provided on a second end plate where the cell voltage control unit is provided. The protection member has protrusions protruding from both sides of the protection member in a horizontal direction, and a body portion having a vertically elongated shape so as to extend to a front face of the cell voltage control unit.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: April 16, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takaharu Sato, Masahiko Sato, Masahiro Kawahara, Akihiro Suzuki, Takanori Mori, Tsuyoshi Kobayashi, Kazuma Sasaki
  • Patent number: 10233816
    Abstract: A body of an oil jet is provided with: an oil supply port; a cylinder; and an oil injection port. A piston valve is accommodated in the cylinder. The piston valve forms in the cylinder a differential pressure room which is a closed compartment. In the piston valve, an orifice which makes the differential pressure room being communicated with a side of the oil supply port is formed. The piston valve is biased toward a position at which the oil injection port is closed by a spring. A first oil injection nozzle is connected to the oil injection port. A leak hole which allows oil to be leaked outside of the cylinder from the differential pressure room is open at the side surface of the cylinder. Further, a second oil injection nozzle is connected to the leak hole.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: March 19, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd.
    Inventors: Akihiro Honda, Motoichi Murakami, Masahiro Kawahara, Norio Imai
  • Patent number: 9995191
    Abstract: There is provided an oil feed member capable of preventing lubricant from being excessively fed from an oil feed member to lubrication portions of valve gears, and a lubricant feed mechanism for an engine provided with the same. An oil feed member for feeding lubricant to lubrication portions of valve gears for opening and closing intake valves and exhaust valves of an engine, the oil feed member including: an upper panel member and a lower panel member laid over each other; and an oil feed passage formed by recessing laid surfaces of the upper panel member and the lower panel member, wherein the oil feed passage includes basis oil passages formed on a downstream side, and an introduction oil passage formed on an upstream side and having a smaller lubricant flow area than that of the basis oil passages.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: June 12, 2018
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Keiji Yuda, Yasuhiro Hikita, Masahiro Kawahara, Satoru Kanbara, Syuhei Nishida
  • Patent number: 9945275
    Abstract: An oil level regulating apparatus includes a valve unit and a solenoid unit. The valve unit includes a housing having an inflow hole, an outflow hole, and a leak hole, a partition separating the outflow hole and the leak hole, defining a valve chamber close to the outflow hole, and having a partition continuous hole, a valve dividing the valve chamber into an introduction chamber and a pressure chamber and having a valve continuous hole, and a valve biasing member biasing the valve. The solenoid unit has a shaft configured to open and close a leak channel. The shaft can open and close the leak channel on the downstream side of the pressure chamber. When the shaft closes the leak channel, the valve is switched to a closed valve state of closing the outflow hole.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: April 17, 2018
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Yoshinobu Kishi, Naoto Noguchi, Masahiro Kawahara
  • Publication number: 20180036958
    Abstract: There is provided a synthetic resin welded body and a method of manufacturing the same, in which it is possible to make only a portion of an absorption-side synthetic resin part to be welded likely to melt in laser welding. The synthetic resin welded body includes: a laser light absorbing oil passage forming member (absorption-side synthetic resin part); and a laser light transmissive baffle plate (transmission-side synthetic resin part) which is laid over the oil passage forming member and laser-welded in this state. The baffle plate is formed so that a welded area which is laser-welded to the oil passage forming member is higher in laser transmittance than a non-welded area which is the other area.
    Type: Application
    Filed: December 1, 2015
    Publication date: February 8, 2018
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Yuzo UENO, Shinya MATSUI, Masahiro KAWAHARA
  • Publication number: 20180009175
    Abstract: A method of manufacturing the synthetic resin welded body includes the steps of: preparing an oil passage forming member including a welding portion having a top portion serving as a welding face; preparing a baffle plate having a welded face; disposing the oil passage forming member and the baffle plate so that the welding face comes in contact with the welded face; and radiating laser light to the welding portion to weld the welding face and the welded face. A recess is formed in the baffle plate so that a groove portion is formed along an outer peripheral face of the welding portion when the oil passage forming member and the baffle plate are disposed so that the welding face comes in contact with the welded face.
    Type: Application
    Filed: November 13, 2015
    Publication date: January 11, 2018
    Applicant: Taiho Kogyo Co., Ltd.
    Inventors: Yuzo UENO, Shinya MATSUI, Masahiro KAWAHARA
  • Publication number: 20170361541
    Abstract: There are provided a synthetic resin joined body and a method of manufacturing the same, with which it is possible to secure both of sealing performance of a fluid passage and joint strength between synthetic resin parts, even if an area of a portion to be welded is reduced. The synthetic resin joined body includes: a baffle plate; an oil passage forming member which comes in contact with the baffle plate; an oil passage which is formed between the baffle plate and the oil passage forming member and through which lubricant flows; a sealing portion which is formed by welding the baffle plate and the oil passage forming member to each other on an outer side of the oil passage to seal a periphery of the oil passage; and a joint portion for joining the baffle plate and the oil passage forming member to each other.
    Type: Application
    Filed: November 13, 2015
    Publication date: December 21, 2017
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Yuzo UENO, Masahiro KAWAHARA
  • Publication number: 20170138233
    Abstract: Provided are an oil feed member that makes it possible to ensure a wide distance between oil passages and to achieve space saving in the oil passages and a lubricant feed mechanism of an engine provided with the oil feed member. An oil feed member includes a lubricant passage and a plurality of discharge ports that are formed on the downstream end of the lubricant passage and discharge lubricant flowing through the lubricant passage to a lubrication portion. The lubricant passage includes a basis oil passage, a first upstream branch oil passage that branches off from the basis oil passage and allows lubricant guided to the discharge ports to flow therethrough, and a second upstream branch oil passage that branches off from the basis oil passage and allows lubricant guided to the discharge ports to flow therethrough.
    Type: Application
    Filed: April 1, 2015
    Publication date: May 18, 2017
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Masahiro KAWAHARA, Keiji YUDA, Syuhei NISHIDA, Ippei OKI
  • Publication number: 20170117571
    Abstract: A cell voltage control unit is provided on a lower surface of a stack body of a fuel cell stack. The cell voltage control unit is connected to cell voltage terminals for monitoring cell voltage. A protection member is provided on a second end plate where the cell voltage control unit is provided. The protection member has protrusions protruding from both sides of the protection member in a horizontal direction, and a body portion having a vertically elongated shape so as to extend to a front face of the cell voltage control unit.
    Type: Application
    Filed: October 25, 2016
    Publication date: April 27, 2017
    Inventors: Takaharu SATO, Masahiko SATO, Masahiro KAWAHARA, Akihiro SUZUKI, Takanori MORI, Tsuyoshi KOBAYASHI, Kazuma SASAKI
  • Publication number: 20170044940
    Abstract: There is provided an oil feed member capable of preventing lubricant from being excessively fed from an oil feed member to lubrication portions of valve gears, and a lubricant feed mechanism for an engine provided with the same. An oil feed member for feeding lubricant to lubrication portions of valve gears for opening and closing intake valves and exhaust valves of an engine, the oil feed member including: an upper panel member and a lower panel member laid over each other; and an oil feed passage formed by recessing laid surfaces of the upper panel member and the lower panel member, wherein the oil feed passage includes basis oil passages formed on a downstream side, and an introduction oil passage formed on an upstream side and having a smaller lubricant flow area than that of the basis oil passages.
    Type: Application
    Filed: April 28, 2015
    Publication date: February 16, 2017
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Keiji YUDA, Yasuhiro HIKITA, Masahiro KAWAHARA, Satoru KANBARA, Syuhei NISHIDA
  • Patent number: 9388123
    Abstract: Provided is a compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof: [in the formula, R1 to R5, A, and *1 to *3 are as defined in Description].
    Type: Grant
    Filed: November 28, 2013
    Date of Patent: July 12, 2016
    Assignee: Kyoto University
    Inventors: Takayoshi Suzuki, Yukihiro Itoh, Daisuke Ogasawara, Naoki Miyata, Tamio Mizukami, Ryuzo Sasaki, Akifumi Takaori, Masahiro Kawahara
  • Publication number: 20160186642
    Abstract: A body of an oil jet is provided with: an oil supply port; a cylinder; and an oil injection port. A piston valve is accommodated in the cylinder. The piston valve forms in the cylinder a differential pressure room which is a closed compartment. In the piston valve, an orifice which makes the differential pressure room being communicated with a side of the oil supply port is formed. The piston valve is biased toward a position at which the oil injection port is closed by a spring. A first oil injection nozzle is connected to the oil injection port. A leak hole which allows oil to be leaked outside of the cylinder from the differential pressure room is open at the side surface of the cylinder. Further, a second oil injection nozzle is connected to the leak hole.
    Type: Application
    Filed: June 9, 2014
    Publication date: June 30, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.
    Inventors: Akihiro HONDA, Motoichi MURAKAMI, Masahiro KAWAHARA, Norio IMAI
  • Publication number: 20160039748
    Abstract: Provided is a compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof: [in the formula, R1 to R5, A, and *1 to *3 are as defined in Description].
    Type: Application
    Filed: November 28, 2013
    Publication date: February 11, 2016
    Inventors: Takayoshi SUZUKI, Yukihiro ITOH, Daisuke OGASAWARA, Naoki MIYATA, Tamio MIZUKAMI, Ryuzo SASAKI, Akifumi TAKAORI, Masahiro KAWAHARA
  • Publication number: 20150377096
    Abstract: An oil level regulating apparatus includes a valve unit and a solenoid unit. The valve unit includes a housing having an inflow hole, an outflow hole, and a leak hole, a partition separating the outflow hole and the leak hole, defining a valve chamber close to the outflow hole, and having a partition continuous hole, a valve dividing the valve chamber into an introduction chamber and a pressure chamber and having a valve continuous hole, and a valve biasing member biasing the valve. The solenoid unit has a shaft configured to open and close a leak channel. The shaft can open and close the leak channel on the downstream side of the pressure chamber. When the shaft closes the leak channel, the valve is switched to a closed valve state of closing the outflow hole.
    Type: Application
    Filed: February 5, 2014
    Publication date: December 31, 2015
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Yoshinobu KISHI, Naoto NOGUCHI, Masahiro KAWAHARA
  • Patent number: 9121334
    Abstract: A body of an oil jet including: an oil supply port which opens into an oil passage in a cylinder block of an internal combustion engine; a cylinder one end of which is communicated with the oil supply port and the other end of which is closed; and an oil injection port which opens on a side surface of the cylinder. A piston valve is accommodated in the cylinder. The piston valve forms in the cylinder a differential pressure room which is a closed compartment. Moreover, an orifice which makes the differential pressure room being communicated with a side of the oil supply port is formed in the piston valve. The piston valve is biased toward a position at which the oil injection port is closed by a spring. Furthermore, a leak hole which allows oil to be leaked outside of the body from the differential pressure room is formed in the body.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: September 1, 2015
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.
    Inventors: Akihiro Honda, Motoichi Murakami, Masahiro Kawahara, Yoshitaka Yamaguchi
  • Patent number: 9010282
    Abstract: A piston cooling jet includes a housing, a nozzle, a valve, a pressure chamber, a pressure adjusting passage, and a filter. The nozzle is provided to project outward from the housing, and capable of spraying oil toward a piston. The valve is capable of moving reciprocally inside the housing, and configured to receive a load due to a hydraulic pressure in an engine-side oil passage applied from a front side of the valve. The valve includes a valve-side oil passage that communicates with the engine-side oil passage. The pressure chamber communicates with the valve-side oil passage. The pressure adjusting passage is disposed between the pressure chamber and a space outside the housing. The filter is disposed in the valve, and configured to remove foreign matter that cannot pass through the pressure adjusting passage from oil passing through the valve-side oil passage.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: April 21, 2015
    Assignees: Taiho Kogyo Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshitaka Yamaguchi, Masahiro Kawahara, Motoichi Murakami, Akihiro Honda
  • Publication number: 20150027388
    Abstract: A body (2) of an oil jet (100) is provided with: an oil supply port (6) which opens into an oil passage (62) in a cylinder block (60) of an internal combustion engine; a cylinder (4) one end of which is communicated with the oil supply port (6) and the other end of which is closed; and an oil injection port (10) which opens on a side surface of the cylinder (4). A piston valve (20) is accommodated in the cylinder (4). The piston valve (20) forms in the cylinder (4) a differential pressure room (8) which is a closed compartment. Moreover, an orifice (22) which makes the differential pressure room (8) being communicated with a side of the oil supply port (6) is formed in the piston valve (20). The piston valve (20) is biased toward a position at which the oil injection port (10) is closed by a spring (14). Furthermore, a leak hole (42) which allows oil to be leaked outside of the body (2) from the differential pressure room (8) is formed in the body (2).
    Type: Application
    Filed: February 22, 2013
    Publication date: January 29, 2015
    Applicants: TAIHO KOGYO Co., Ltd., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akihiro Honda, Motoichi Murakami, Masahiro Kawahara, Yoshitaka Yamaguchi
  • Publication number: 20140091161
    Abstract: A piston cooling jet includes a housing, a nozzle, a valve, a pressure chamber, a pressure adjusting passage, and a filter. The nozzle is provided to project outward from the housing, and capable of spraying oil toward a piston. The valve is capable of moving reciprocally inside the housing, and configured to receive a load due to a hydraulic pressure in an engine-side oil passage applied from a front side of the valve. The valve includes a valve-side oil passage that communicates with the engine-side oil passage. The pressure chamber communicates with the valve-side oil passage. The pressure adjusting passage is disposed between the pressure chamber and a space outside the housing. The filter is disposed in the valve, and configured to remove foreign matter that cannot pass through the pressure adjusting passage from oil passing through the valve-side oil passage.
    Type: Application
    Filed: September 16, 2013
    Publication date: April 3, 2014
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.
    Inventors: Yoshitaka YAMAGUCHI, Masahiro KAWAHARA, Motoichi MURAKAMI, Akihiro HONDA
  • Patent number: 8545102
    Abstract: A cylindrical sliding bearing 1 can rotatably support a rotational shaft by a sliding surface 4 (inner circumferential surface). A crowning 5 having a sloped surface is formed at both ends of the sliding surface 4 in the axial direction. The crowning 5 includes a first crowning 3A formed of a sloped surface of a lining layer 3 and a second crowning 2A formed of a sloped surface of a back metal 2 positioned on the lower side of the first crowning. Unlike a conventional sliding bearing, the back metal 2 where the crowning 5 is positioned is provided as a sloped surface (2A). As compared with conventional bearings, the crowning 5 can be prevented from being unevenly brought into contact with the rotational shaft.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: October 1, 2013
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Motoshi Hayashi, Masahiro Kawahara, Ken-ichirou Futamura, Toshiaki Inaguma, Makoto Shibata
  • Patent number: 8303014
    Abstract: A pick-up style utility vehicle having a front seat, a rear seat, a cargo bed, a cabin frame surrounding a riding space, and a screen shield partitioning the cargo bed and a rear riding space in front of the cargo bed. The cargo bed can be changed between an expanded state in which the cargo bed is expanded in a front direction into the rear riding space and a non-expanded state not occupying the rear riding space. A backrest for the rear seat is attached to the screen shield. The screen shield can be shifted between a position in the expanded state and a position in the non-expanded state when a seat bottom and the backrest of the rear seat are changed between a retracted state in which the seat bottom and the backrest are erected on the same straight line and a seatable used state.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: November 6, 2012
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Yoshihiko Orihashi, Yohei Sasaki, Naohisa Masuda, Yoshihiro Watanabe, Hirokazu Morita, Koji Nozaki, Masahiro Kawahara, Masashi Sakata, Takafumi Hisamori