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:
Oct. 19, 2021
Filed:
Jul. 23, 2015
Applicants:
Manfred A. A. Lupke, Thornhill, CA;
Stefan A. Lupke, Thornhill, CA;
Inventors:
Manfred A. A. Lupke, Thornhill, CA;
Stefan A. Lupke, Thornhill, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 49/00 (2006.01); B29C 48/09 (2019.01); B29C 48/13 (2019.01); B29C 48/00 (2019.01); B29C 33/36 (2006.01); B29C 48/30 (2019.01); B29C 43/22 (2006.01); B29C 48/92 (2019.01); B29C 49/78 (2006.01); B29L 23/00 (2006.01); B29C 43/58 (2006.01); B29C 48/21 (2019.01); B29C 55/24 (2006.01); B29K 23/00 (2006.01);
U.S. Cl.
CPC ...
B29C 49/0021 (2013.01); B29C 33/36 (2013.01); B29C 43/226 (2013.01); B29C 48/0017 (2019.02); B29C 48/09 (2019.02); B29C 48/13 (2019.02); B29C 48/21 (2019.02); B29C 48/303 (2019.02); B29C 48/92 (2019.02); B29C 49/783 (2013.01); B29C 55/24 (2013.01); B29C 2043/5808 (2013.01); B29C 2043/5816 (2013.01); B29C 2948/92019 (2019.02); B29C 2948/92209 (2019.02); B29C 2948/92514 (2019.02); B29C 2948/92904 (2019.02); B29C 2948/92971 (2019.02); B29C 2949/78025 (2013.01); B29C 2949/78537 (2013.01); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29L 2023/22 (2013.01);
Abstract
In the manufacture of double-walled corrugated extruded pipe it is desirable to form an integral connecting cuff that is of a single wall thickness and typically of a large diameter. The mold blocks and process parameters for forming of the cuff as part of an otherwise double-walled pipe requires a transition as the cuff moves past the die outlets. The present invention allows for accurate sensing and control of air pressure and temperature as the cuff moves past the die outlets. Improvements in both the die tooling and the method of manufacture are disclosed.