Patents by Inventor Katsuaki Shimatani

Katsuaki Shimatani 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).

  • Dome-shaped contact plate giving crispy feeling of click and sheet with contact plate
    Patent number: 6563068
    Abstract: A movable contact structure which, even when used in a planar circuit board, can provide a crispy click feeling and will not fail to return to an original position after being inverted is to be provided. The structure consists of a disc formed into a dome shape by cupping a center of a thin metallic sheet in one direction, provided with a skirt rising at a prescribed angle from an outer circumference of this disc toward a center of the disc, and a dome which is continuous from this skirt and can be repetitively inverted, the connecting part between the skirt and the dome being formed in multiple steps via a plurality of bent portions.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: May 13, 2003
    Assignee: Alps Electric Co., Ltd.
    Inventors: Takeo Yamagata, Katsuaki Shimatani
  • Dome-shaped contact plate giving crispy feeling of click and sheet with contact plate
    Publication number: 20020096425
    Abstract: A movable contact structure which, even when used in a planar circuit board, can provide a crispy click feeling and will not fail to return to an original position after being inverted is to be provided. The structure consists of a disc formed into a dome shape by cupping a center of a thin metallic sheet in one direction, provided with a skirt rising at a prescribed angle from an outer circumference of this disc toward a center of the disc, and a dome which is continuous from this skirt and can be repetitively inverted, the connecting part between the skirt and the dome being formed in multiple steps via a plurality of bent portions.
    Type: Application
    Filed: January 11, 2002
    Publication date: July 25, 2002
    Applicant: ALPS ELECTRIC CO., LTD.
    Inventors: Takeo Yamagata, Katsuaki Shimatani