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:
Aug. 27, 2013
Filed:
Jul. 14, 2009
Konrad Brandl, Thalmassing, DE;
Reiner Grillenberger, Windsbach, DE;
Sebastian Weiss, Oberasbach, DE;
Ilkka AF Ursin, Turku, FI;
Konrad Brandl, Thalmassing, DE;
Reiner Grillenberger, Windsbach, DE;
Sebastian Weiss, Oberasbach, DE;
Ilkka Af Ursin, Turku, FI;
Siemens Aktiengesellschaft, München, DE;
Abstract
An electric machine has a stator and a rotor arranged on a rotor shaft for rotation about a shaft axis, wherein the shaft axis defines an axial, a radial and a tangential direction. The rotor has at least one continuous axial rotor channel. The stator has a lamination stack extending over the rotor viewed in the axial direction. The lamination stack completely surrounds the rotor, forming a closed inner rotor chamber and has at least one axial stator channel running continuously in the axial direction and that is completely closed when viewed on the sectional plane. The electric machine has covers which are designed to form in conjunction with the lamination stack at least one radial channel running in the radial direction. The radial channels connect the axial stator channel(s) to the inner rotor chamber by means of a fluid connection but are otherwise closed.