Patent · US Active

Method and system for rehabilitating an old pipe

US8857475B2 · kind B2 · utility

0Cited by

12References

10Claims

0Family size

Assignee

TRACTO-TECHNIK GmbH & Co., KG · DE

Inventor

Elmar Koch · Eslohe, DE

Key dates

Filing date	Jan 7, 2011
Grant date	Oct 14, 2014
Priority date	—
Expiry date	Jan 7, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16L55/1658
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

In a method for rehabilitating an old pipe, the outer diameter of a new pipe, which is at least equal to the inner diameter of the old pipe, is initially reduced, and the new pipe is then inserted into the old pipe, the outer diameter of the new pipe remaining at least partially reduced during the insertion process. The invention is characterized in that an expanding device is moved through the old pipe ahead of the new pipe.

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