(19)
(11) EP 2 120 330 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
03.04.2019 Bulletin 2019/14

(45) Mention of the grant of the patent:
20.02.2019 Bulletin 2019/08

(21) Application number: 09160491.8

(22) Date of filing: 18.05.2009
(51) International Patent Classification (IPC): 
H02P 21/14(2016.01)
G01R 31/34(2006.01)
 H02P 23/14(2006.01)

(54)

Apparatus for estimating the rotor slots quantity

Vorrichtung zur Berechnung der Rotornutenanzahl

Dispositif pour estimer le nombre d'encoches d'un rotor

(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

(30) Priority: 11.11.2008 US 268800
16.05.2008 US 53941 P

(43) Date of publication of application:
18.11.2009 Bulletin 2009/47

(73) Proprietor: Schneider Electric USA, Inc.
Schaumburg, IL 60173 (US)

(72) Inventors:
  • Colby, Roy S
    Raleigh, NC 27615 (US)
  • Gao, Zhi
    Raleigh, NC 27609 (US)
  • Turner, Larry A
    Chapel Hill, NC 27516 (US)

(74) Representative: Murgitroyd & Company 
Scotland House 165-169 Scotland Street
Glasgow G5 8PL
Glasgow G5 8PL (GB)


(56) References cited: : 
DE-A1-102006 008 048
 US-B1- 6 198 181
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).