Patents by Inventor Naoki Katsumata

Naoki Katsumata 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: 8528949
    Abstract: A door handle stroke change structure includes a latch mechanism, an electric latch drive mechanism, a mechanical latch drive mechanism, and an operation member which operates the electric latch drive mechanism and the mechanical latch drive mechanism. The operation member is moveable among a closed position, a first position at which the electric latch drive mechanism is operated, and a second position at which the mechanical latch drive mechanism is operated. A motion to move the operation member from the closed position to the first position is a same motion as a motion to move the operation member from the closed position to the second position. A movement amount of the operation member from the closed position to the first position is greater than a movement amount of the operation member from the closed position to the second position by the motion.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: September 10, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Naoki Katsumata, Daichi Okamoto, Katsuya Ashizawa
  • Publication number: 20110101709
    Abstract: A door handle stroke change structure includes a latch mechanism, an electric latch drive mechanism, a mechanical latch drive mechanism, and an operation member which operates the electric latch drive mechanism and the mechanical latch drive mechanism. The operation member is moveable among a closed position, a first position at which the electric latch drive mechanism is operated, and a second position at which the mechanical latch drive mechanism is operated. A motion to move the operation member from the closed position to the first position is a same motion as a motion to move the operation member from the closed position to the second position. A movement amount of the operation member from the closed position to the first position is greater than a movement amount of the operation member from the closed position to the second position by the motion.
    Type: Application
    Filed: October 5, 2010
    Publication date: May 5, 2011
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Naoki KATSUMATA, Daichi Okamoto, Katsuya Ashizawa
  • Patent number: 7703310
    Abstract: In a door opening and closing device for a vehicle in which a cylinder body of a cylinder lock having a rotor turned in response to a key operation and a casing of a door-locking device which has a door-locking lever shaft turned in response to the turning of the rotor and is switched over between a locking state and an unlocking state in response to the turning of the door-locking lever shaft are mounted to a door, a turning movement-transmitting member having a flexibility is disposed between the cylinder lock and the door-locking device so as to transmit a turning force of the rotor to the door-locking lever shaft by its twisting motion responsive to the turning of the rotor. Thus, it is possible to increase the degree of freedom for the relative dispositions of the cylinder lock and the door-locking device, while eliminating the need for a protector for preventing the unauthorized access from the outside.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: April 27, 2010
    Assignees: Kabushiki Kaisha Honda Lock, Honda Motor Co., Ltd.
    Inventors: Yuuichi Usuzaki, Fumio Kobayashi, Naoki Katsumata, Nobuyuki Kishikawa, Hidetoshi Ijuin
  • Patent number: 7302818
    Abstract: In an apparatus for locking and unlocking a vehicle door, an inner cable, with one end connected to a rotor to make a twisting operation in response to the rotation of the rotor of a cylinder lock and the other end connected to a key operation input shaft of a door lock mechanism, is inserted through an outer casing with opposite ends connected to the cylinder lock and the door lock mechanism. A locking part capable of elastically engaging with an engaging part provided at a casing included by the door lock mechanism is provided at an end portion of the outer casing at a side of the door lock mechanism.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: December 4, 2007
    Assignees: Kabushiki Kaisha Honda Lock, Honda Motor Co., Ltd.
    Inventors: Yuuichi Usuzaki, Nobuo Watarai, Kouichi Tabe, Hidetoshi Ijuin, Nobuyuki Kishikawa, Kozou Munezane, Naoki Katsumata, Kinji Hoshikawa
  • Patent number: 7213428
    Abstract: An apparatus for locking and unlocking a vehicle door includes a cylinder lock having a rotor, a door lock mechanism including a key operation input shaft which rotates to switch a locked state and an unlocked state of a door, and a torque cable for transmitting rotation of the rotor to the key operation input shaft. One end of the torque cable is connected to the rotor via a gear transmission mechanism accommodated in a gear case. The gear transmission mechanism is constructed by a face gear coaxially connected to the rotor, and a pinion gear which has an axial line perpendicular to an axial line of the face gear, is connected to the torque cable, and is meshed with the face gear. The pinion gear is accommodated in the gear case to be capable of being displaced in an axial direction in a limited range while keeping a meshed state with the face gear.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: May 8, 2007
    Assignees: Kabushiki Kaisha Honda Lock, Honda Motor Co., Ltd.
    Inventors: Masahiko Harada, Hidetoshi Ijuin, Nobuyuki Kishikawa, Kozou Munezane, Naoki Katsumata
  • Publication number: 20060214467
    Abstract: In a door opening and closing device for a vehicle in which a cylinder body of a cylinder lock having a rotor turned in response to a key operation and a casing of a door-locking device which has a door-locking lever shaft turned in response to the turning of the rotor and is switched over between a locking state and an unlocking state in response to the turning of the door-locking lever shaft are mounted to a door, a turning movement-transmitting member having a flexibility is disposed between the cylinder lock and the door-locking device so as to transmit a turning force of the rotor to the door-locking lever shaft by its twisting motion responsive to the turning of the rotor. Thus, it is possible to increase the degree of freedom for the relative dispositions of the cylinder lock and the door-locking device, while eliminating the need for a protector for preventing the unauthorized access from the outside.
    Type: Application
    Filed: November 14, 2003
    Publication date: September 28, 2006
    Inventors: Yuuichi Usuzaki, Fumio Kobayashi, Naoki Katsumata, Nobuyuki Kishikawa, Hideoshi Ijuin
  • Publication number: 20050258652
    Abstract: In an apparatus for locking and unlocking a vehicle door, an inner cable, with one end connected to a rotor to make a twisting operation in response to the rotation of the rotor of a cylinder lock and the other end connected to a key operation input shaft of a door lock mechanism, is inserted through an outer casing with opposite ends connected to the cylinder lock and the door lock mechanism. A locking part capable of elastically engaging with an engaging part provided at a casing included by the door lock mechanism is provided at an end portion of the outer casing at a side of the door lock mechanism.
    Type: Application
    Filed: May 3, 2005
    Publication date: November 24, 2005
    Applicants: Kabushiki Kaisha Honda Lock, Honda Motor Co., Ltd.
    Inventors: Yuuichi Usuzaki, Nobuo Watarai, Kouichi Tabe, Hidetoshi Ijuin, Nobuyuki Kishikawa, Kozou Munezane, Naoki Katsumata, Kinji Hoshikawa
  • Publication number: 20050253400
    Abstract: An apparatus for locking and unlocking a vehicle door includes a cylinder lock having a rotor, a door lock mechanism including a key operation input shaft which rotates to switch a locked state and an unlocked state of a door, and a torque cable for transmitting rotation of the rotor to the key operation input shaft. One end of the torque cable is connected to the rotor via a gear transmission mechanism accommodated in a gear case. The gear transmission mechanism is constructed by a face gear coaxially connected to the rotor, and a pinion gear which has an axial line perpendicular to an axial line of the face gear, is connected to the torque cable, and is meshed with the face gear. The pinion gear is accommodated in the gear case to be capable of being displaced in an axial direction in a limited range while keeping a meshed state with the face gear.
    Type: Application
    Filed: May 3, 2005
    Publication date: November 17, 2005
    Applicants: Kabushiki Kaisha Honda Lock, Honda Motor Co., Ltd.
    Inventors: Masahiko Harada, Hidetoshi Ijuin, Nobuyuki Kishikawa, Kozou Munezane, Naoki Katsumata