Patents Assigned to SP Air Kabusiki Kaisha Corporation
  • Hand tool with impact drive and speed reducing mechanism
    Patent number: 7080578
    Abstract: A power driven tool useful for tightening and loosening a mechanical fastener includes an impact mechanism. Preferably, the tool is pneumatic and includes a ratchet head and an impact device for providing additional torque to the ratchet head. A planetary reduction gear reduces the high output speed of a pneumatic motor for input into the impact device and reduces wear on the impact device.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: July 25, 2006
    Assignee: SP Air Kabusiki Kaisha Corporation
    Inventor: Osamu Izumisawa