Patents by Inventor George A. McAlpine

George A. McAlpine 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).

  • Material and method for lining pipes
    Patent number: 6210074
    Abstract: A material and method is provided for lining man-entry sized pipes and securing the lining to the pipe. The lining comprises a plurality of adjacent, unplasticized polyvinyl chloride panel segments circumferentially curved within the pipe, each including an interior channel through which grout may be injected. Upon the grout's curing, the grout provides strength and support for a second layer of grout injected into an annulus between the pipe's inner surface and an outer surface of the lining.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: April 3, 2001
    Assignee: Danby of North America
    Inventor: George A. McAlpine