Patents by Inventor Katunari Konishi

Katunari Konishi 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).

  • Spring rail frog
    Patent number: 6138958
    Abstract: A spring rail frog includes a movable wing rail, a fixed wing rail and a nose rail. The movable wing rail is provided with a bendable portion and a non-bendable portion. The bendable portion can include any or all of a reduced width base portion, a reduced width head portion and an increased width web portion. The height of the movable wing rail can also be smaller in height than the height of the nose rail. A fixing plate can also be provided between a base plate and the movable wing rail to adjust the relative height of the movable wing rail and the nose rail. The movable wing rail extends beyond a spacer block disposed between the movable wing rail and the fixed wing rail. The movable wing rail extends away from the nose rail a predetermined distance for connection to the lead rail.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: October 31, 2000
    Assignee: Yamato Kogyo Co., Ltd.
    Inventors: Takaaki Irie, Katunari Konishi
  • Spring rail frog having bendable rail with modified cross-section
    Patent number: 5782437
    Abstract: A spring rail frog is disclosed that includes a movable wing rail, a fixed wing rail and a nose rail. The movable wing rail is provided with a bendable portion and a non-bendable portion. The bendable portion can include any or all of a reduced width base portion, a reduced width head portion and an increased width web portion. The height of the movable wing rail can also be smaller in height than the height of the nose rail. A fixing plate can also be provided between a base plate and the movable wing rail to adjust the relative height of the movable wing rail and the nose rail.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: July 21, 1998
    Assignee: Yamato Kogyo Co., Ltd.
    Inventors: Takaaki Irie, Katunari Konishi