Patents by Inventor Masayoshi Kominami

Masayoshi Kominami 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).

  • Rotary hammer with body having detachable sections
    Patent number: 4770254
    Abstract: A rotary hammer has a hammer body with an electric motor section which comprises a receiving section for receiving transmission mechanisms in a frame which serves as a shell barrel. A driving electric motor is installed in the shell barrel. The body also has a vibration and transmission mechanism section in which the transmission mechanisms including the motion conversion transmission mechanism and the vibrating mechanism are held by a bracket removably connected to the frame. In addition, the hammer body has a tool holding section in which the tool holding member for concomitantly rotatably holding the tool is rotatably supported by a bracket removably connected to the frame. The three sections are so arranged that they can be assembled and disassembled individually as separate component units.
    Type: Grant
    Filed: November 29, 1985
    Date of Patent: September 13, 1988
    Assignee: Shibaura Engineering Works Co., Ltd.
    Inventor: Masayoshi Kominami