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:
Sep. 21, 2021
Filed:
Jul. 10, 2018
Nidec Gpm Gmbh, Auengrund OT Merbelsrod, DE;
Franz Pawellek, Lautertal, DE;
Conrad Nickel, Troistedt, DE;
Jens Hoffmann, Schwarzbach, DE;
Robin Büsch, Römhild, DE;
Paul Ludwig, Erfurt, DE;
Jakob Schnitzer, Hildburghausen, DE;
Silvio Werner, Rödental, DE;
NIDEC GPM GmbH, Auengrund OT Merbelsrod, DE;
Abstract
An electric coolant pump is used as an auxiliary water pump in a vehicle. The pump includes radial mounting of the shaft () is provided by means of a coolant-lubricated radial sliding bearing () arranged between the pump impeller () and the rotor (). A dry-running electric motor () with a radially inner stator () and a radially outer rotor () is accommodated in a motor chamber () separated from the pump chamber (). A shaft seal () is between the radial sliding bearing () and the motor chamber (). The rotor () is bell-shaped with an inner surface facing the shaft seal () and being fixed to the shaft seal () to axially overlap with the shaft (). The motor chamber () has an opening to the atmosphere, which is closed by a liquid-tight pressure equalization membrane () that is permeable to vapor.