Patent · US Active

Internal lining for pipe surfaces and method of lining pipes

US11009172B2 · kind B2 · utility

0Cited by
26References
18Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJun 13, 2019
Grant dateMay 18, 2021
Priority date—
Expiry dateJun 13, 2039

Classification

  • Technology area (CPC E)Fixed Constructions
  • CPC primaryE03F2003/065
  • WIPO fieldSurface technology, coating
  • WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.