Patents Assigned to Navajo Manufacturing Company, Inc.
  • Patent number: 6533412
    Abstract: A pair of eyeglasses having a frame with interchangeable lenses and a method of interchanging the lenses. The frame has a centrally located nosepiece and two end portions. Each lens has a substantially circular aperture adjacent the nosepiece of the frame and a notch adjacent a respective end portion of the frame. The notch fits over a corresponding tang in the frame end to secure the outer portion of the lens while protruding pins on the frame adjacent the nosepiece engage the circular aperture of each lens. A hinged locking mechanism is snapped over that portion of the lens engaging the pins, preventing disengagement of the lenses from the pins. To replace the lenses, the hinged locking mechanism is opened, allowing the lenses to be disengaged from the pins and pulled from the tangs.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: March 18, 2003
    Assignee: Navajo Manufacturing Company, Inc.
    Inventors: Chih Kuan Wang, Tianshi Wang