Patents by Inventor Russell McIlwain

Russell McIlwain 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).

  • Method and apparatus for temporarily stopping the flow in a live fluid carrying pipe
    Publication number: 20060254660
    Abstract: A method and apparatus for temporarily stopping the flow of a fluid issuing from a live conduit includes a plug device which can be manually inserted into the flowing pipe to stop the flow of fluid temporarily while the pipe is repaired, for example. The plug is designed to remain in the pipe and dissolve within a predetermined time under contact with the particular fluid in the live pipe such that, in time, normal flow of pipe fluid is resumed.
    Type: Application
    Filed: May 12, 2005
    Publication date: November 16, 2006
    Inventor: Russell McIlwain