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Patent Searching and Data


Title:
LINE START PERMANENT MAGNET MOTOR USING A MODULAR ROTOR
Document Type and Number:
WIPO Patent Application WO/2015/071468
Kind Code:
A3
Abstract:
A rotor system for a downhole motor comprises at least one permanent magnet rotor section, and at least one squirrel cage rotor section. The permanent magnet rotor section and the squirrel cage rotor section are joined in series by a connection. Ideally, the connection comprises a male self lock taper on one rotor, and a corresponding female self lock taper on the other rotor.

Inventors:
HEAD, Philip (14 The Orchard, Virginia Water Surrey GU25 4DT, GB)
Application Number:
EP2014/074803
Publication Date:
August 06, 2015
Filing Date:
November 17, 2014
Export Citation:
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Assignee:
CORETEQ SYSTEMS LTD (1 Hartdene House, Bridge Road, Bagshot Surrey GU19 5AT, GB)
International Classes:
H02K21/46; H02K7/00; H02K7/20; H02K16/00; H02K5/132; H02K17/16; H02K21/14
Domestic Patent References:
WO2004027211A12004-04-01
Foreign References:
CN101227127A2008-07-23
US1960484A1934-05-29
JPH11299144A1999-10-29
CN101873043A2010-10-27
JPH0522916A1993-01-29
Attorney, Agent or Firm:
HARMAN, Paul (37 Upper Park Road, Camberley Surrey GU15 2EG, GB)
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