Patents by Inventor Yoshikazu Akahoshi

Yoshikazu Akahoshi 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).

  • Clutch device for vehicle
    Patent number: 8657094
    Abstract: A clutch device for a vehicle includes an input shaft, an output shaft coaxially arranged with a rotational axis of the input shaft, first clutch plates, second clutch plates, a piston fitted to a cylindrical portion integrally formed with the output shaft or the input shaft, an elastic member arranged between the piston and the cylindrical portion, a hydraulic chamber defined by the cylindrical portion and the piston, a canceller chamber defined by the cylindrical portion and the piston to connect to an outer side of the cylindrical portion via a discharge hole formed at a portion of the cylindrical portion, the portion being located at a predetermined radial distance from the rotational axis, and a throttle hole formed in a portion of the piston to connect the hydraulic chamber to the canceller chamber, the portion being located at a radially inward side of the portion of the cylindrical portion.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: February 25, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Keiichiro Kawashima, Yoshikazu Akahoshi
  • CLUTCH DEVICE FOR VEHICLE
    Publication number: 20120118695
    Abstract: A clutch device for a vehicle includes an input shaft, an output shaft coaxially arranged with a rotational axis of the input shaft, first clutch plates, second clutch plates, a piston fitted to a cylindrical portion integrally formed with the output shaft or the input shaft, an elastic member arranged between the piston and the cylindrical portion, a hydraulic chamber defined by the cylindrical portion and the piston, a canceller chamber defined by the cylindrical portion and the piston to connect to an outer side of the cylindrical portion via a discharge hole formed at a portion of the cylindrical portion, the portion being located at a predetermined radial distance from the rotational axis, and a throttle hole formed in a portion of the piston to connect the hydraulic chamber to the canceller chamber, the portion being located at a radially inward side of the portion of the cylindrical portion.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 17, 2012
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Keiichiro KAWASHIMA, Yoshikazu Akahoshi