Patents by Inventor Hiroaki Tsuboyama

Hiroaki Tsuboyama 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).

  • Drive device for a sewing machine
    Patent number: 5481165
    Abstract: A drive device for a sewing machine comprises a high speed main motor having a power transmitting flywheel, and a low speed auxiliary motor having a power transmitting pulley. The power transmitting flywheel and the power transmitting pulley being mounted through a one-way clutch on the upper shaft of the sewing machine.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: January 2, 1996
    Assignee: Juki Corporation
    Inventors: Akiyoshi Urano, Hiroaki Tsuboyama