Patents by Inventor Kozo Ishizaka

Kozo Ishizaka 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).

  • Patent number: 4196667
    Abstract: A print hammer having an improved head portion for striking a selected moving print character member in a line printing device is provided. The printing device prints when the print hammer strikes a print character member at a predetermined print position forcing the character member against an ink ribbon, a print paper and a platen. The head portion is formed with an inclined surface facing the direction of approaching adjacent character members to drive an adjacent character member striking the side of the print hammer around the print hammer for avoiding jamming and damage to character members and print hammers. In a preferred embodiment the head portion is substantially "V" shaped with the apex of the V disposed in a direction opposite to the movement of the print character members.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: April 8, 1980
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Akio Mitsuishi, Hiroyuki Akazawa, Kozo Ishizaka, Shinshu Seiki Kabushiki Kaisha