Title:
電動機
Document Type and Number:
Japanese Patent JP5073487
Kind Code:
B2
Abstract:
A winding for an n-phase electric motor is disclosed. The inventive winding comprises a number of consecutive winding groups of n individual windings, wherein at any point in time an individual winding of a first group exhibits one direction of current flow and wherein at the same point in time a corresponding individual winding of an adjacent group exhibits the opposite direction of current flow. There is also disclosed a method for preparing such winding. It is further disclosed a magnetic unit adapted for such winding, comprising permanent magnets being essentially triangular in cross-section. Further, there is disclosed electric motors using the inventive winding concept, as well as geodetic instruments taking advantage thereof. An electric motor according to the disclosed inventive concept is particularly well suited for direct drive.
Inventors:
Michael, hertzmann
Magnus, Westermark
Magnus, Westermark
Application Number:
JP2007519726A
Publication Date:
November 14, 2012
Filing Date:
July 07, 2005
Export Citation:
Assignee:
TRIMBLE AB
International Classes:
H02K3/00; G01C1/02; H02K1/27; H02K3/04; H02K16/02; H02K21/12; H02K
Domestic Patent References:
| JP57135645A | ||||
| JP2002291187A | ||||
| JP2002025832A | ||||
| JP2000175391A |
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Tomoya Deguchi
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Tomoya Deguchi