Global Patent Index - EP 1101272 A1

EP 1101272 A1 2001-05-23 - ROTORS UTILIZING A STEPPED SKEW

Title (en)

ROTORS UTILIZING A STEPPED SKEW

Title (de)

ROTOREN MIT STUFENFÖRMIGERSCHRÄGE

Title (fr)

ROTORS UTILISANT UN ECART ANGULAIRE ETAGE

Publication

EP 1101272 A1 (EN)

Application

EP 99928866 A

Priority

  • US 9914391 W
  • US 9077398 P

Abstract (en)

[origin: WO0001058A1] Divided magnet rotors R having a stepped skew rather than a helical skew are described. The stepped skew enables the use of straight magnet sections (44) that can be inserted into the rotor core notches (38) thereby eliminating the need to produce a helix from the rotor cage. The stepped skew is effective in decoupling stator slot order harmonics. In addition, the stepped skew rotor R includes, in some embodiments, open slots (22) so that the rotor is not subject to rotor bridge saturation.

IPC 1-7 (main, further and additional classification)

H02K 21/14; H02K 15/02

IPC 8 full level (invention and additional information)

H02K 1/30 (2006.01); H02K 1/16 (2006.01); H02K 1/26 (2006.01); H02K 1/27 (2006.01); H02K 15/03 (2006.01); H02K 17/16 (2006.01); H02K 17/26 (2006.01); H02K 19/14 (2006.01); H02K 21/46 (2006.01)

CPC (invention and additional information)

H02K 19/14 (2013.01); H02K 1/165 (2013.01); H02K 1/265 (2013.01); H02K 17/165 (2013.01); H02K 21/46 (2013.01); H02K 2201/06 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0001058 A1 20000106; AU 4584099 A 20000117; BR 9911442 A 20040106; CA 2334319 A1 20000106; CN 1099750 C 20030122; CN 1307742 A 20010808; EP 1101272 A1 20010523; EP 1101272 A4 20041027; HU 0102029 A2 20011028; HU 0102029 A3 20021028; IL 134571 A 20050831; IL 134571 D0 20010430; JP 2004500789 A 20040108; KR 20010023214 A 20010326; PL 338792 A1 20001120

INPADOC legal status


2006-04-19 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20051011

2004-12-15 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20041029

2004-10-27 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20040909

2001-05-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010126

2001-05-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE