The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2002
Filed:
Apr. 18, 2001
Applicant:
Inventor:
Siegfried Schwert, Berlin D-14195, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 5/810 ; F16L 5/5165 ;
U.S. Cl.
CPC ...
F16L 5/810 ; F16L 5/5165 ;
Abstract
The invention relates to a tubing arrangement for lining pipes, to a method for producing the same and to a method for lining pipes. The invention especially relates to superpressure pipes with an internal working pressure of greater than 16 bar. In order to prevent the pipe tubing from being damaged in the case of accidents or when the pipes are placed out of service, the tubing ( ) has a barrier layer ( ) which has a gas permeation of less than 1 ml/(bar d m ) for nonpolar gases and of less than 0.1 ml/(bar d m ) for polar gases. Preferably, the gas permeation ranges from 0.0001 ml/(bar d m ) to 0.01 ml/(bar d m ).