Patents by Inventor Ken Haginoya

Ken Haginoya 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).

  • Method and apparatus for manufacturing friction plate
    Patent number: 6381822
    Abstract: The present invention provides a method for manufacturing a plurality of friction plates obtained by adhering friction members to substantially annular core plates, comprising the steps of simultaneously stamping a plurality of coaxial core plates having different diameters with remaining joint portions therebetween, simultaneously stamping a plurality of substantially annular and coaxial friction members having different diameters corresponding to the core plates and with remaining joint portions therebetween to permit adhesion to the core plates, and stamping the joint portions of the friction members and the core plates when or after the friction members are adhered to the core plates.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: May 7, 2002
    Assignee: NSK-Warner K.K.
    Inventors: Tadashi Watanabe, Ken Haginoya