Patents by Inventor Yuji Hirakata

Yuji Hirakata 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).

  • Socket wrench for power tool
    Patent number: 7077033
    Abstract: This invention discloses device for a socket wrench to be firmly and fixedly combined with a motive tool, where the socket wrench is prevented from falling off from the combining during use. A pin insertion hole is formed in a blind hole with its one end as a closing portion and thus center of gravity for the pin is established toward at the closing portion far from center of the socket wrench whereby shock and excess force are absorbed in this new center of gravity, whereas the combing pin can be surely maintained at the seat avoiding from the condition in which the socket wrench and the motive tool are not separated off with firm combining.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: July 18, 2006
    Assignee: Kyoto Tool Co., Ltd.
    Inventor: Yuji Hirakata
  • Socket wrench for power tool
    Publication number: 20040237730
    Abstract: This invention discloses device for a socket wrench to be firmly and fixedly combined with a motive tool, where the socket wrench is prevented from falling off from the combining during use. A pin insertion hole is formed in a blind hole with its one end as a closing portion and thus center of gravity for the pin is established toward at the closing portion far from center of the socket wrench whereby shock and excess force are absorbed in this new center of gravity, whereas the combing pin can be surely maintained at the seat avoiding from the condition in which the socket wrench and the motive tool are not separated off with firm combining.
    Type: Application
    Filed: March 15, 2004
    Publication date: December 2, 2004
    Inventor: Yuji Hirakata