Patents by Inventor Shouzen Yanakawa

Shouzen Yanakawa 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).

  • Machine tool
    Patent number: 9527180
    Abstract: A set means for setting a workpiece (11) is provided behind a main shaft (4), the front end of which is provided with a chuck (8) that opens and closes freely, and is disposed so as to support the workpiece (11) with the chuck central axis line (C1) of the chuck (8) and the workpiece central axis line (C2) of the workpiece (11) positioned on a single line. The orientation of a workpiece (11)-holding means (53) of a conveyance means (56) for conveying the workpiece (11) between the set means (41) and the main shaft (4) is configured to be maintained when transferring the workpiece (11) between the holding means and the set means (41) and when transferring between the holding means and the chuck (8).
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: December 27, 2016
    Assignees: CITIZEN HOLDINGS CO., LTD., CITIZEN MACHINERY CO., LTD.
    Inventors: Sakae Nakazawa, Akira Handa, Shouzen Yanakawa
  • MACHINE TOOL
    Publication number: 20150258649
    Abstract: A set means for setting a workpiece (11) is provided behind a main shaft (4), the front end of which is provided with a chuck (8) that opens and closes freely, and is disposed so as to support the workpiece (11) with the chuck central axis line (C1) of the chuck (8) and the workpiece central axis line (C2) of the workpiece (11) positioned on a single line. The orientation of a workpiece (11)-holding means (53) of a conveyance means (56) for conveying the workpiece (11) between the set means (41) and the main shaft (4) is configured to be maintained when transferring the workpiece (11) between the holding means and the set means (41) and when transferring between the holding means and the chuck (8).
    Type: Application
    Filed: October 9, 2013
    Publication date: September 17, 2015
    Inventors: Sakae Nakazawa, Akira Handa, Shouzen Yanakawa