Patents by Inventor Choichi Ishikawa

Choichi 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).

  • Patent number: 10923755
    Abstract: A mount structure for a fuel cell stack includes a first bracket member supporting and fixing the fuel cell stack to a first installation member, and a second bracket member supporting and fixing the fuel cell stack to a second installation member. A part of the second bracket includes a constricted portion having low strength in comparison with other portions of the second bracket member.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: February 16, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hideharu Naito, Yusuke Nara, Hidetada Kojima, Choichi Ishikawa, Ryoichi Yoshitomi
  • Patent number: 10879543
    Abstract: A stack case includes a lower surface and at least one through hole. The lower surface is at a bottom of the stack case in a vehicle height direction of the vehicle. The at least one through hole opens to an inside of the stack case. An outer opening opens to an outside of a vehicle. The at least one vent pipe has one end and another end opposite to the one end along a length of the at least one vent pipe. The one end is connected to the at least one through hole provided in the stack case. The another end is connected to the outer opening in the vehicle body. The drain hole is provided in the lower surface of the stack case to be open to an inside of a motor compartment. The drain hole is located below the outer opening in the vehicle height direction.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: December 29, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuki Imamura, Choichi Ishikawa, Norihisa Kobayashi, Toshinobu Mito, Mitsunori Matsumoto
  • Publication number: 20180301733
    Abstract: A mount structure for a fuel cell stack includes a first bracket member supporting and fixing the fuel cell stack to a first installation member, and a second bracket member supporting and fixing the fuel cell stack to a second installation member. A part of the second bracket includes a constricted portion having low strength in comparison with other portions of the second bracket member.
    Type: Application
    Filed: June 26, 2018
    Publication date: October 18, 2018
    Inventors: Hideharu NAITO, Yusuke NARA, Hidetada KOJIMA, Choichi ISHIKAWA, Ryoichi YOSHITOMI
  • Patent number: 10033062
    Abstract: A second end plate constituting a fuel cell stack is provided with a cooling medium supply manifold member and a cooling medium discharge manifold member. The second end plate is also provided with a mount member that affixes the fuel cell stack to an automobile body frame and covers the cooling medium discharge manifold member.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: July 24, 2018
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hideharu Naito, Yusuke Nara, Hidetada Kojima, Choichi Ishikawa, Ryoichi Yoshitomi
  • Patent number: 9950603
    Abstract: A vehicle front structure includes a connecting member (10) formed of a belt-shaped metal plate, the connecting member (10) has a plate-shaped bottom section (11), a first folded section (12) formed by folding a circumferential edge of the bottom section (11) and a circumferential wall section (13) that is formed in a continuous annular shape and that continues to the bottom section (11) via a folded section (12), and the bottom section (11) of the connecting member is formed in a V shape upward or downward in a longitudinal direction.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: April 24, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuya Abe, Ryoichi Yoshitomi, Choichi Ishikawa
  • Patent number: 9711819
    Abstract: A mount structure includes a mount member, and a bracket member. An upper surface of the bracket member, which is connected to a lower portion of a fuel cell stack, includes an upper surface cut formed by cutting the bracket member in a depth direction, and the upper surface cut extends in a surface direction. A lower surface of the bracket member, which is opposite to the upper surface, includes a lower surface cut formed by cutting the bracket member in the depth direction, and the lower surface cut extends in the surface direction.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: July 18, 2017
    Assignees: Honda Motor Co., Ltd., Nissin Kogyo Co., Ltd.
    Inventors: Choichi Ishikawa, Ryoichi Yoshitomi, Hideharu Naito, Susumu Yodono, Takashi Kuroiwa
  • Publication number: 20170113533
    Abstract: A vehicle front structure includes a connecting member (10) formed of a belt-shaped metal plate, the connecting member (10) has a plate-shaped bottom section (11), a first folded section (12 formed by folding a circumferential edge of the bottom section (11) and a circumferential wall section (13) that is formed in a continuous annular shape and that continues to the bottom section (11) via a folded section (12), and the bottom section (11) of the connecting member is formed in a V shape upward or downward in a longitudinal direction.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 27, 2017
    Inventors: Yuya ABE, Ryoichi YOSHITOMI, Choichi ISHIKAWA
  • Publication number: 20170113531
    Abstract: A stack case includes a lower surface and at least one through hole. The lower surface is at a bottom of the stack case in a vehicle height direction of the vehicle. The at least one through hole opens to an inside of the stack case. An outer opening opens to an outside of a vehicle. The at least one vent pipe has one end and another end opposite to the one end along a length of the at least one vent pipe. The one end is connected to the at least one through hole provided in the stack case. The another end is connected to the outer opening in the vehicle body. The drain hole is provided in the lower surface of the stack case to be open to an inside of a motor compartment. The drain hole is located below the outer opening in the vehicle height direction.
    Type: Application
    Filed: October 19, 2016
    Publication date: April 27, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yuki IMAMURA, Choichi ISHIKAWA, Norihisa KOBAYASHI, Toshinobu MITO, Mitsunori MATSUMOTO
  • Publication number: 20170117570
    Abstract: A mount structure includes a mount member, and a bracket member. An upper surface of the bracket member, which is connected to a lower portion of a fuel cell stack, includes an upper surface cut formed by cutting the bracket member in a depth direction, and the upper surface cut extends in a surface direction. A lower surface of the bracket member, which is opposite to the upper surface, includes a lower surface cut formed by cutting the bracket member in the depth direction, and the lower surface cut extends in the surface direction.
    Type: Application
    Filed: October 18, 2016
    Publication date: April 27, 2017
    Inventors: Choichi ISHIKAWA, Ryoichi YOSHITOMI, Hideharu NAITO, Susumu YODONO, Takashi KUROIWA
  • Publication number: 20160344058
    Abstract: A second end plate constituting a fuel cell stack is provided with a cooling medium supply manifold member and a cooling medium discharge manifold member. The second end plate is also provided with a mount member that affixes the fuel cell stack to an automobile body frame and covers the cooling medium discharge manifold member.
    Type: Application
    Filed: January 23, 2015
    Publication date: November 24, 2016
    Inventors: Hideharu NAITO, Yusuke NARA, Hidetada KOJIMA, Choichi ISHIKAWA, Ryoichi YOSHITOMI
  • Patent number: 9371009
    Abstract: A mount structure includes side mounts for holding a fuel cell stack to thereby fix the fuel cell stack to first vehicle frames, and rear mounts for fixing the fuel cell stack to a second vehicle frame. The strength of the side mounts is lower than the strength of the rear mounts. In the structure, when an external load is applied to a fuel cell electric vehicle, the side mounts are broken prior to breakage of the rear mounts.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: June 21, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Choichi Ishikawa, Ryoichi Yoshitomi
  • Publication number: 20150251560
    Abstract: A mount structure includes side mounts for holding a fuel cell stack to thereby fix the fuel cell stack to first vehicle frames, and rear mounts for fixing the fuel cell stack to a second vehicle frame. The strength of the side mounts is lower than the strength of the rear mounts. In the structure, when an external load is applied to a fuel cell electric vehicle, the side mounts are broken prior to breakage of the rear mounts.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Inventors: Choichi ISHIKAWA, Ryoichi YOSHITOMI
  • Patent number: 7198457
    Abstract: A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device adapted to apply, to the rotary shaft, a balance thrust force opposing an impeller thrust force. A water-lubricated bearing is used as each of the radial bearings, and the rotary shaft is supported by the water-lubricated bearings with a balance member of the balance device interposed therebetween.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: April 3, 2007
    Assignee: Hitachi Industries Co., Ltd.
    Inventors: Yoshimasa Chiba, Choichi Ishikawa, Hiroyuki Katsura, Daimon Abe
  • Publication number: 20050158165
    Abstract: A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device adapted to apply, to the rotary shaft, a balance thrust force opposing an impeller thrust force. A water-lubricated bearing is used as each of the radial bearings, and the rotary shaft is supported by the water-lubricated bearings with a balance member of the balance device interposed therebetween.
    Type: Application
    Filed: August 6, 2004
    Publication date: July 21, 2005
    Applicant: Hitachi Industries Co., Ltd.
    Inventors: Yoshimasa Chiba, Choichi Ishikawa, Hiroyuki Katsura, Daimon Abe