Patents by Inventor Hisatoshi ISHIKAWA

Hisatoshi 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).

  • Webbing take-up device and seatbelt device
    Patent number: 9598048
    Abstract: There is provided a webbing take-up device including (1) a take-up shaft, (2) an attachment and detachment detection unit, (3) a motor, (4) a first transmission unit that transmits rotation of the output shaft in a first direction to the take-up shaft, (5) a second transmission unit that transmits rotation of the output shaft in a second direction to the take-up shaft, and that also transmits the output torque of the output shaft to the take-up shaft such that the take-up torque of the take-up shaft does not reach a preset first torque, and (6) a control unit that, in cases in which engagement between a tongue and a buckle has been detected, controls a drive voltage and a drive current such that the output shaft rotates in the first direction, and the take-up torque of the take-up shaft reaches a second torque higher than the first torque.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: March 21, 2017
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Tomonari Umakoshi, Masato Yatsuhashi, Hisatoshi Ishikawa, Yuya Nagata, Takahiro Osaki, Fumihito Komeno
  • WEBBING TAKE-UP DEVICE AND SEATBELT DEVICE
    Publication number: 20160244020
    Abstract: There is provided a webbing take-up device including (1) a take-up shaft, (2) an attachment and detachment detection unit, (3) a motor, (4) a first transmission unit that transmits rotation of the output shaft in a first direction to the take-up shaft, (5) a second transmission unit that transmits rotation of the output shaft in a second direction to the take-up shaft, and that also transmits the output torque of the output shaft to the take-up shaft such that the take-up torque of the take-up shaft does not reach a preset first torque, and (6) a control unit that, in cases in which engagement between a tongue and a buckle has been detected, controls a drive voltage and a drive current such that the output shaft rotates in the first direction, and the take-up torque of the take-up shaft reaches a second torque higher than the first torque.
    Type: Application
    Filed: February 22, 2016
    Publication date: August 25, 2016
    Inventors: Tomonari UMAKOSHI, Masato YATSUHASHI, Hisatoshi ISHIKAWA, Yuya NAGATA, Takahiro OSAKI, Fumihito KOMENO