Method for conduit expansion

US8137599B2 · kind B2 · utility

Assignee

• Underground Solutions Technologies Group, Inc. · US

Inventors

• Mark A. Smith · Ayer, US
• Thomas Marti · Pine Township, US
• Bryan St. Onge · Hastings, CA
• Henri St. Onge · Markham, CA

Key dates

• Filing date: Dec 31, 2008
• Grant date: Mar 20, 2012
• Expiry date: Sep 8, 2029

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L55/1654
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a conduit expansion method, including: inserting a liner conduit formed from a polyvinyl chloride material at least partially within a host conduit; circulating fluid within an inner area of the liner conduit; and injecting fluid into the inner area of the liner conduit; wherein the liner conduit at least partially expands within the host conduit.