Patents Assigned to Grant Plastics, Inc.
  • Plastic reel
    Patent number: 4997142
    Abstract: A plastic reel or spool for fine magnet wire or the like is formed of two molded plastic pieces, preferably identical. Each piece preferably has a flange and a section of the core. The core sections have internal transverse lips which abut when the two pieces are assembled. The flanges have openings which permit the introduction of an appropriately dimensioned ultrasonic welding tool head to weld the abutting lip surfaces together.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: March 5, 1991
    Assignee: Grant Plastics, Inc.
    Inventor: Robert Y. Grant