Patents Assigned to William J. McNamara
  • Utility knife
    Patent number: 4884342
    Abstract: A cutting device including a handle and blade. The blade being detachably connectable to the handle, and the handle including a guidance mechanism. This guidance mechanism has a convex peripheral edge and is rotatively connected to the handle. The cutting device also includes an engagement and disengagement mechanism for operatively interrelating the blade with the guidance mechanism.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: December 5, 1989
    Assignee: William J. McNamara
    Inventors: William J. McNamara, Stephen Keane