Patents by Inventor Edward Albert Clavin

Edward Albert Clavin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pipe scraper
    Patent number: 4031590
    Abstract: Apparatus for scraping the interior sides of the walls of pipes, having retractable scraper elements at each end of a carrier body or at only one end thereof. 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: September 9, 1975
    Date of Patent: June 28, 1977
    Assignee: Midcon Pipeline Equipment Co.
    Inventor: Edward Albert Clavin
  • Apparatus for brush-cleaning the interiors of pipes
    Patent number: 4027349
    Abstract: Apparatus for brush-cleaning the interiors of pipes, wherein rotative brushes are carried by a rotative carrier plate. The brushes are rotated by air motors, and rotate at very high speeds. The brushes are spring-loaded to consistently bear against the inside of the pipe wall, and are disposed at a small angle from radial which results in reduced brush wear and more efficient pipe wall cleaning.
    Type: Grant
    Filed: March 12, 1976
    Date of Patent: June 7, 1977
    Assignee: Midcon Pipeline Equipment Co.
    Inventor: Edward Albert Clavin
  • Force maintaining toggles systems
    Patent number: 4002050
    Abstract: Force maintaining toggle systems wherein maximum or near maximum force is maintained by a series of step wise toggle engagements. The forces may be applied between spaced objects arranged oppositely or circularly.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: January 11, 1977
    Assignee: Mid-Continent Pipeline Equipment Co., a division of Harrisburg, Inc.
    Inventor: Edward Albert Clavin
  • 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