Patent · US Expired

Apparatus for sealing leakage points in pipes from the inside of the pipe, and a method of sealing the leakage points

US5465758A · kind A · utility

17Cited by

13References

14Claims

0Family size

Assignee

Uhrig Kanaltechnik GmbH · DE

Inventors

Eckhard Graf · Gomaringen, DE
Jurgen Graf · Wels, AT
Hubert Mauz · Donaueschingen, DE

Key dates

Filing date	Nov 17, 1994
Grant date	Nov 14, 1995
Priority date	—
Expiry date	Nov 17, 2014

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16L55/163
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A resilient sealing sleeve supported by a mounting cart is directed to a leakage point in pipes in order to seal them. The sealing sleeve is raised to the top of the pipe by a raising and lowering device, and widened there in the circumferential direction by a widening device provided on the mounting cart. A stopping device on the sealing sleeve holds the sleeve in its widened position for the purpose of sealing the pipe.

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