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. 22, 2014
Filed:
Jan. 10, 2008
Applicants:
Patrick Jansson, Merikaarto, FI;
Charlotta Risku, Vasa, FI;
Inventors:
Patrick Jansson, Merikaarto, FI;
Charlotta Risku, Vasa, FI;
Assignee:
Oy KWH Pipe Ab, Vasa, FI;
Primary Examiner:
Int. Cl.
CPC ...
F16L 55/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Abrasion resistant polymer pipe and a process for the production thereof. The pipe comprises a first, abrasion resistant inner layer () and a second, structural layer (), which is placed on the outer side of the inner layer. The first and the second layers comprise extrudable polymer materials and they are preferably separated by an alarm layer which indicates wear or depletion of the inner layer. The pipe is suitable for use in the mining industry and generally for conducting liquid and gaseous fluids containing abrasive particles.