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, 2003
Filed:
Nov. 03, 1998
Kari Kirjavainen, Espoo, FI;
Jyri Järvenkylä, Hollola, FI;
Uponor Innovation AB, Fristad, SE;
Abstract
The invention relates to a method and an arrangement for cooling an extruded hollow product. According to the invention, the extruder ( ) is provided with means for sucking air through the pipe ( ). The air to be sucked is thus in contact with the inner surface of the pipe ( ), cooling the pipe from the inside. Therefore the cooling of the pipe ( ) can be realized in an efficient and simple manner. By arranging the sucking to occur from the middle of the conical extruder ( ), no weld line will be formed in the extruded product, and the extruder ( ) can be cooled effectively from the inside. According to the invention, the heat contained by the air that has been sucked through the pipe ( ) can also be utilized.