Patents by Inventor Big Ju

Big Ju 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).

  • Driving tool having an impacting device
    Patent number: 6722448
    Abstract: A driving tool includes a block and an impactor received in a front and a rear chambers of a handle, a driving shank attached to the block, and a plunger engaged between the block and the impactor. The impactor includes a cavity formed in one end for selectively receiving the tip of the plunger and for impacting onto the plunger and the block and the driving shank when the tip of the plunger is aligned with and engaged into the cavity of the impactor. The block has a guide device for guiding the block and the driving shank to rotate relative to the handle.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: April 20, 2004
    Inventor: Big Ju
  • Driving tool having an impacting device
    Publication number: 20030121681
    Abstract: A driving tool includes a block and an impactor received in a front and a rear chambers of a handle, a driving shank attached to the block, and a plunger engaged between the block and the impactor. The impactor includes a cavity formed in one end for selectively receiving the tip of the plunger and for impacting onto the plunger and the block and the driving shank when the tip of the plunger is aligned with and engaged into the cavity of the impactor. The block has a guide device for guiding the block and the driving shank to rotate relative to the handle.
    Type: Application
    Filed: November 19, 2002
    Publication date: July 3, 2003
    Inventor: Big Ju