Patents Assigned to Mid-Continent Pipeline Equipment Company, a division of Harrisburg, Inc.
  • Pipe scraper
    Patent number: 3977331
    Abstract: Apparatus for scraping the interior sides of the walls of pipes, having ractable scraper elements at each end of a carrier body. The scraper apparatus is preferably moved in both directions through a pipe, the trailing scraper elements preferably being retracted during movement of the apparatus in each direction. The apparatus is particularly designed for removal of coating materials such as cosmoline from pipes before use of the pipes in pipelines.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: August 31, 1976
    Assignee: Mid-Continent Pipeline Equipment Company, a division of Harrisburg, Inc.
    Inventor: Edward Albert Clavin