Patents Assigned to C.M.T. Co.
  • Friction drive wrench
    Patent number: 3969962
    Abstract: A wrench includes an elongated shank, an axial cavity in one end of the shank, a radially split annular driving member formed with radial tangs fitting into the axial cavity in the shank, a cylindrical head mounted within the driving member and frictionally gripped thereby, and manually actuable means whereby the grip is increased during forward movement of the shank in a selected direction and released during back-up movement of the shank.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: July 20, 1976
    Assignee: C.M.T. Co.
    Inventor: Theodore A. Campbell