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. 07, 2008
Filed:
Aug. 26, 2003
Jere Kolehmainen, Merikaarto, FI;
Jari Pekola, Vantaa, FI;
Jouni Ikaheimo, Kurikka, FI;
ABB OY, Helsinki, FI;
Abstract
The object of the invention is a rotor () for a permanent-magnet electrical machine, comprising an axle () mounted to the machine body with bearings, a rotor pack made of iron and arranged around the axle (), as well as permanent magnets () adapted to the rotor pack, used for forming the magnetic poles () of the rotor. According to the invention, the rotor poles () contain a slot () extending from both edges of the pole () essentially towards the centre of the pole; the slot () is closer to the outer circumference () of the rotor than the central axle of the rotor. The invention also includes a method for manufacturing such a rotor.