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:
Feb. 10, 2015
Filed:
May. 05, 2010
Applicant:
Karl Knecht, Rickenbach-Egg, DE;
Inventor:
Karl Knecht, Rickenbach-Egg, DE;
Assignee:
Brugg Rohr AG Holding, Brugg, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 9/18 (2006.01); F16L 9/14 (2006.01); B29C 65/00 (2006.01); B23P 19/02 (2006.01); B25B 27/14 (2006.01); B23Q 3/00 (2006.01); B23P 19/04 (2006.01); B23P 19/00 (2006.01); B23P 15/26 (2006.01); B21D 53/00 (2006.01); B29C 44/12 (2006.01); B29C 33/30 (2006.01); B29C 33/76 (2006.01); F16L 59/14 (2006.01);
U.S. Cl.
CPC ...
B29C 44/1242 (2013.01); B29C 33/304 (2013.01); B29C 33/76 (2013.01); F16L 59/143 (2013.01);
Abstract
During the manufacturing of heat-insulated pipes () with an inner duct () and an outer duct () and a foamed insulation () arranged in between, the inner duct is placed on a tension member (). The latter is tensioned between tensioning means by means of a tensile force, such that it runs straight and that the inner duct is held straight. The latter is held on centering elements () which are spaced from one another in a defined way by means of spacers (). In this straight position the inner duct may be surrounded with foam inside of the outer duct, without needing spacers between the ducts.