Patents by Inventor Toshiaki Kasuga

Toshiaki Kasuga 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).

  • Buttonhole darning sewing machine
    Patent number: 6164224
    Abstract: A cloth cutting knife 16 is structured such that the length of the cutting edge thereof is set shorter than the length of the side sewing portions of a buttonhole to be formed, and a buttonhole having a length corresponding to the length of the right and left side sewing portions can be formed by moving up and down the cloth cutting knife 16 two or more times. The cloth cutting knife 16 is moved up and down at least once during formation of the stitches of the right and left side sewing portions. Also, the cloth cutting knife 16 is moved up and down once each time a given number of stitches of the right and left side sewing portions are formed. The given number of stitches is set in accordance with both of the length of the cutting edge of the cloth cutting knife 16 and the length of the buttonhole to be formed.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: December 26, 2000
    Assignee: Juki Corporation
    Inventors: Mitsuhiro Tachikawa, Kazuaki Ishii, Yasuaki Hirano, Takashi Tsukioka, Toshiaki Kasuga, Tsuguo Kubota