(19)
(11) EP 2 296 258 A8

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

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
14.09.2011 Bulletin 2011/37

(43) Date of publication:
16.03.2011 Bulletin 2011/11

(21) Application number: 09425344.0

(22) Date of filing: 09.09.2009
(51) International Patent Classification (IPC): 
H02K 17/16(2006.01)
(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 SM TR
Designated Extension States:
AL BA RS

(71) Applicant: ANSALDOBREDA S.p.A.
80147 Napoli (IT)

(72) Inventors:
  • Caruso, Giovanni
    00016 Monterotondo Stazione (IT)
  • Iannuzzi, Diego
    80125 Napoli (IT)
  • Maceri, Franco
    00133 Roma (IT)
  • Pagano, Enrico
    80125 Napoli (IT)
  • Piegari, Luigi
    20133 Milano (IT)
  • Beneduce, Luigi
    80059 Torre del Greco (IT)
  • Tarantino, Antonio
    80048 Sant' Anastasia (IT)

(74) Representative: Lovino, Paolo 
Studio Torta S.r.l. Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) Squirrel-cage rotor for asynchronous motors


(57) A squirrel-cage rotor (1) for asynchronous motors is provided with a lamination stack (2) made of a magnetic material and a plurality of bars (8), the intermediate portions (9) of which engage respective slots (3) of the lamination stack (2); the end portions (12) of the bars (8) protrude with respect to the lamination stack (3) at both axial ends of the rotor (1) and are fixed to two shorting rings (13); a plurality of spaces (15) are defined, axially, by the lamination stack (2) and the shorting rings (13), and tangentially by the end portions (12) of the bars (8); part of such spaces (15) is engaged by stiffening blocks (17) arranged in contact with the end portions (12) of the adjacent bars (8).