Patents Assigned to SIPP TECHNOLOGIES, LLP
  • Patent number: 11009172
    Abstract: A pipe lining having at least two material layers, a first elastomeric layer spray applied directly to the inside of a pipe which acts as a hydrophobic, ductile membrane, and a second rigid layer is spray applied to the first layer prior to complete curing of the first layer. One or more additional layers may be applied to the second layer to provide additional abrasion, erosion or chemical resistance to the second layer. An intermediate reinforcing layer may be disposed between the first and second layers. The first layer cures into a closed cell elastomeric foam, such that stress and other forces are not passed from the pipe to the rigid second layer.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: May 18, 2021
    Assignee: SIPP TECHNOLOGIES, LLP
    Inventor: Kent Weisenberg