Patents by Inventor Yoshihiro KURAHASHI

Yoshihiro KURAHASHI 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: 11915409
    Abstract: An inspection method for determining a presence of a defect on a sides surface of a pillar-shaped honeycomb structure including generating strip-shaped images by repeatedly capturing the side surface part by part with an area camera while relatively moving the area camera with respect to the pillar-shaped honeycomb structure; determining the presence or absence of defects based on the strip-shaped images when a number of the strip-shaped images generated is sufficient to cover the entire side surface; a shutter speed when the area camera captures a part of the side surface for generating a single strip-shaped image is 10 to 1000 ?sec; and each of the strip-shaped images has a length covering the entire height of the pillar-shaped honeycomb structure in a longitudinal direction, and a length of 1 to 10 mm in a width direction.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: February 27, 2024
    Assignee: NGK INSULATORS, LTD.
    Inventors: Takafumi Terahai, Ryota Kurahashi, Yoshihiro Sato
  • Publication number: 20180251018
    Abstract: A powertrain includes; a first shaft connected to a first power source; a second shaft including first and second parts connected with a second power source and an output element respectively; first and second drive gears supported so as to be able to rotate relative to the first shaft; first and second driven gears supported on and fixed to the second shaft and respectively meshing with the first and second drive gears constantly; a first clutch capable of engaging the first drive gear with the first shaft; a second clutch capable of engaging the second drive gear with the first shaft; and a third clutch capable of connecting and disconnecting the first part to and from the second part between the first and second driven gears. Consequently, a powertrain with driving paths from multiple power sources in multiple stages can be achieved while avoiding the use of a three-shaft structure.
    Type: Application
    Filed: August 29, 2016
    Publication date: September 6, 2018
    Applicant: JATCO Ltd
    Inventors: Yoshihiro KURAHASHI, Kouhei TOYOHARA
  • Patent number: 8560187
    Abstract: A controller controls a continuously variable transmission including a variator with a primary pulley, a secondary pulley, and a power transmission member mounted therebetween. A torque converter is provided with a rotational speed detector detecting the rotational speed of a rotor located closer to drive wheels than the torque converter, a rotational speed change amount calculator calculating a change amount in the rotational speed per unit time, a limit setting unit that sets a higher absolute value of a limiter for the change amount as a rotational speed difference between an input shaft and an output shaft of the torque converter increases, a final change amount setting unit setting the smaller of the absolute value of the change amount and of the limiter as a final change amount, and a hydraulic controller controlling a hydraulic pressure to the variator based on the final change amount.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: October 15, 2013
    Assignee: Jatco Ltd
    Inventors: Yoshihiro Kurahashi, Shinichiro Watanabe, Tomomasa Ikeda
  • Publication number: 20120245807
    Abstract: A controller controls a continuously variable transmission including a variator with a primary pulley, a secondary pulley, and a power transmission member mounted therebetween. A torque converter is provided with a rotational speed detector detecting the rotational speed of a rotor located closer to drive wheels than the torque converter, a rotational speed change amount calculator calculating a change amount in the rotational speed per unit time, a limit setting unit that sets a higher absolute value of a limiter for the change amount as a rotational speed difference between an input shaft and an output shaft of the torque converter increases, a final change amount setting unit setting the smaller of the absolute value of the change amount and of the limiter as a final change amount, and a hydraulic controller controlling a hydraulic pressure to the variator based on the final change amount.
    Type: Application
    Filed: February 13, 2012
    Publication date: September 27, 2012
    Inventors: Yoshihiro KURAHASHI, Shinichiro WATANABE, Tomomasa IKEDA