Patents by Inventor Bruce R. Keesing

Bruce R. Keesing 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 of welding and a system therefor
    Patent number: 5234148
    Abstract: A method of welding in which an inert gaseous shield at a welding zone is provided by a mixture of gases of different densities. The proportions of the individual gases in the mixture are controlled to ensure that the density of the gas mixture is about the same as the density of the surrounding atmospheric air. Cryogenic means may be used to form a condensed gas plug in a pipe or the like to be welded.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: August 10, 1993
    Assignee: British Nuclear Fuels plc
    Inventors: Philip L. Stone, David H. Hoskyn, Bruce R. Keesing