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. 21, 2020
Filed:
May. 23, 2018
Dr. Ing. H.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Daniel Knoblauch, Ludwigsburg, DE;
Sebastian Wachter, Weissach, DE;
Abstract
An electric machine, in particular for an electric vehicle. The machine includes a rotor which can be rotated with respect to a stator and has at least one rotor shaft. The machine includes a duct system for cooling the machine, through which duct system a coolant can flow. The duct system runs at least in sections within the rotor shaft. Here, the duct system includes a cooling duct. The cooling duct is configured so as to run conically at least in sections in the longitudinal direction of the rotor shaft, such that the coolant can be conveyed in the direction of an increasing duct diameter by way of a rotational movement of the rotor shaft.