Patents by Inventor Colin N. H. Barker

Colin N. H. Barker 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).

  • Sealing joints and leaks
    Patent number: 4643855
    Abstract: Joints and leaks in pipelines or mains are sealed by injecting into the joint or leak a sealant by means of an expandible tubular pig which is moved endwise through the pipeline or main. The sealant is in the form of an anaerobically curable monomer which cures in the relatively air free conditions in the joint or leak. The pig forms within the pipeline or main an air-free space which communicates with the joint or leak and which is isolated from the fluid in the main. Nevertheless the pig is hollow to permit the flow of fluid therethrough while the joint or leak is sealed. The sealant is injected into the joint or leak by way of the space so that the sealant cures in situ in the joint or leak.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: February 17, 1987
    Assignee: British Gas Corporation
    Inventors: Adrian S. Parkes, Gordon J. Corbett, Peter S. Clough, Colin N. H. Barker
  • Sealing joints and leaks
    Patent number: 4627471
    Abstract: Joints and leaks in pipelines or mains are sealed by injecting into the joint or leak a sealant by means of an expandible tubular pig which is moved endwise through the pipeline or main. The sealant is in the form of an anaerobically curable monomer which cures in the relatively air free conditions in the joint or leak. The pig forms within the pipeline or main an air-free space which communicates with the joint or leak and which is isolated from the fluid in the main. Nevertheless the pig is hollow to permit the flow of fluid therethrough while the joint or leak is sealed. The sealant is injected into the joint or leak by way of the space so that the sealant cures in situ in the joint or leak.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: December 9, 1986
    Assignee: British Gas Corporation
    Inventors: Adrian S. Parkes, Gordon J. Corbett, Peter S. Clough, Colin N. H. Barker
  • Sealing joints and leaks with an anaerobic liquid
    Patent number: 4582551
    Abstract: Joints and leaks in pipelines or mains are sealed by injecting into the joint or leak a sealant by means of an expandible tubular pig which is moved endwise through the pipeline or main. The sealant is in the form of an anaerobically curable monomer which cures in the relatively air free conditions in the joint or leak. The pig forms within the pipeline or main an air-free space which communicates with the joint or leak and which is isolated from the fluid in the main. Nevertheless the pig is hollow to permit the flow of fluid therethrough while the joint or leak is sealed. The sealant is injected into the joint or leak by way of the space so that the sealant cures in situ in the joint or leak.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: April 15, 1986
    Assignee: British Gas Corporation
    Inventors: Adrian S. Parkes, Gordon J. Corbett, Peter S. Clough, Colin N. H. Barker