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:
Jan. 06, 2026
Filed:
Oct. 29, 2021
Applicant:
Sikora Ag, Bremen, DE;
Inventor:
Harald Sikora, Bremen, DE;
Assignee:
Sikora AG, Bremen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 48/92 (2019.01); B29C 48/09 (2019.01); B29C 48/88 (2019.01); B29L 23/00 (2006.01);
U.S. Cl.
CPC ...
B29C 48/92 (2019.02); B29C 48/09 (2019.02); B29C 48/9115 (2019.02); B29C 2948/92152 (2019.02); B29C 2948/92171 (2019.02); B29C 2948/92447 (2019.02); B29C 2948/92666 (2019.02); B29C 2948/92704 (2019.02); B29L 2023/22 (2013.01);
Abstract
A method for determining sagging of melt of a tube extruded in an extrusion device includes structuring a measuring device to rotate about the tube. The measuring device is configured to measure a wall thickness of the tube over a circumference of the tube and determine a wall-thickness profile over the circumference of the tube from the measured wall thicknesses. The wall-thickness profile includes a frequency and an amplitude. The method further includes determining a sagging of the melt from at least one of (i) the frequency and (ii) the amplitude of the wall-thickness profile.