Patents Assigned to Duro Metal Products Company
  • Ratchet wrench
    Patent number: 4277990
    Abstract: A ratchet wrench for supporting removable wrench sockets of simplified construction employing a two-chambered pear shaped housing journaling a ratchet gear and a one-piece combined pawl and pawl reversal lever which are supported on parallel axes for limited rotational movement in mutual bearing engagement; such ratchet gear and pawl receiving additional bearing support from the walls of their respective chambers and being maintained in their rotational operating positions by a single retaining ring.
    Type: Grant
    Filed: November 14, 1979
    Date of Patent: July 14, 1981
    Assignee: Duro Metal Products Company
    Inventor: Roy L. Hall