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. 08, 2024
Filed:
Oct. 12, 2021
Applicant:
Ebm-papst Mulfingen Gmbh & Co. KG, Mulfingen, DE;
Inventors:
Assignee:
ebm-papst Mulfingen GmbH & Co. KG, Mulfingen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 45/22 (2006.01); B29C 45/00 (2006.01); B29C 45/23 (2006.01); B29C 45/27 (2006.01); B29K 101/12 (2006.01); B29L 31/08 (2006.01); F04D 29/22 (2006.01);
U.S. Cl.
CPC ...
B29C 45/22 (2013.01); B29C 45/0005 (2013.01); B29C 45/231 (2013.01); B29C 2045/279 (2013.01); B29K 2101/12 (2013.01); B29L 2031/08 (2013.01); F04D 29/2222 (2013.01);
Abstract
A method for manufacturing an impeller with a number of impeller blades and a cover disc covering the impeller blades. Plastic is injected into an injection mold using a cascade injection molding process to form the impeller. The injection mold has a number of shut-off nozzles to feed the plastic at various joint positions and different opening times. The number of shut-off nozzles is determined as a function of the number of impeller blades.