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:
Jun. 12, 2001
Filed:
Nov. 26, 1997
Johannes Maria Cordia, 3212 Pellenberg, BE;
Robert Seidel, Hindsale, IL (US);
Robert Ritter, Fremont, CA (US);
Other;
Abstract
A dimensionally heat recoverable tubular article (,) is made by spirally wrapping cross-linked polymeric sheet (,) a number of times, and directly fusing together overlapping layers (,) of the cross-linked sheet (,) to form a consolidated tubular article. The final article has a wall thickness of at least 2.2 mm. Articles according to the invention may be made of different diameter and different wall thickness, starting from the same thickness initial sheet material, simply by changing the circumference of wrapping or the number of spiral wraps. Articles according to the invention are particularly useful as casings over joints between district heating pipes.