Patents Assigned to Alliance Plastics, Inc.
  • Flange protector
    Patent number: 4014368
    Abstract: A one piece protector for the machined surface of a flange for pipes and valves which may be installed and removed by finger pressure on integral thimbles which frictionally engage the bores of the bolt holes of the flange.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: March 29, 1977
    Assignee: Alliance Plastics, Inc.
    Inventor: John E. Nelsen