Patents by Inventor Shouji Yatsuyanagi

Shouji Yatsuyanagi 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 housing
    Patent number: 7540212
    Abstract: A method of manufacturing a clutch housing which accommodates therein a plurality of clutch plates adapted to be engaged together so as to transmit a torque, wherein a drum portion and a boss portion can be integrally formed from a plate material so as to form a thick portion having a thickness of not less than approximately 1.3 times as large as that of the plate material and a thin portion having a thickness of not greater than approximately ½ of that of the plate material.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: June 2, 2009
    Assignee: NSK Warner K.K.
    Inventors: Hideki Oki, Shouji Yatsuyanagi, Tomoyuki Miyazaki, Kiyokazu Ichikawa
  • Method of manufacturing a member having toothed portion
    Patent number: 7197908
    Abstract: A method of manufacturing a member having a toothed portion, comprises a first step of cutting a work piece into predetermined dimensions and then deburring the same, and a second step, in succession with the first step, of pressing an axially end face of a portion to be toothed with a predetermined load, and simultaneously drawing the work piece so as to form the toothed portion.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: April 3, 2007
    Assignee: NSK Warner K.K.
    Inventors: Hideki Oki, Shouji Yatsuyanagi, Tomoyuki Miyazaki, Kiyokazu Ichikawa
  • Clutch housing and method of manufacturing thereof
    Publication number: 20060042903
    Abstract: A method of manufacturing a clutch housing which accommodates therein a plurality of clutch plates adapted to be engaged together so as to transmit a torque, wherein a drum portion and a boss portion can be integrally formed from a plate material so as to form a thick portion having a thickness of not less than approximately 1.3 times as large as that of the plate material and a thin portion having a thickness of not greater than approximately ½ of that of the plate material.
    Type: Application
    Filed: August 29, 2005
    Publication date: March 2, 2006
    Inventors: Hideki Oki, Shouji Yatsuyanagi, Tomoyuki Miyazaki, Kiyokazu Ichikawa
  • Method of manufacturing a member having toothed portion
    Publication number: 20060016075
    Abstract: A method of manufacturing a member having a toothed portion, comprises a first step of cutting a work piece into predetermined dimensions and then deburring the same, and a second step, in succession with the first step, of pressing an axially end face of a portion to be toothed with a predetermined load, and simultaneously drawing the work piece so as to form the toothed portion,
    Type: Application
    Filed: July 25, 2005
    Publication date: January 26, 2006
    Inventors: Hideki Oki, Shouji Yatsuyanagi, Tomoyuki Miyazaki, Kiyokazu Ichikawa