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:
Jun. 29, 2010
Filed:
Sep. 19, 2005
Markus Knorr, Augsburg, DE;
Zeljko Jajtic, München, DE;
Markus Knorr, Augsburg, DE;
Zeljko Jajtic, München, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The invention relates to a speed measurement device () for a permanently excited electric synchronous machine () comprising a first part () and a second part (). The invention also relates to a corresponding method for measuring speed. The second part () of the permanently excited electric synchronous machine comprises permanent magnets (). The speed measurement device () comprises at least one first sensor () and a second sensor (), wherein the first sensor () is provided with a sensor coil and the second sensor () is a Hall sensor and the sensors () on the first part () are arranged in such a way that the first sensor () and second sensor () are influenced by a magnetic field (), which is generated by the permanent magnets (), by means of a flow conducting device () having an integrated character.