Direct current motor with double layer armature windings
US4197475A · kind A · utility
Inventors
Key dates
| Filing date | Aug 4, 1978 |
| Grant date | Apr 8, 1980 |
| Priority date | — |
| Expiry date | Aug 4, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K23/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A direct current motor having armature windings which are superposed on each other in double layers. The motor includes a fixed field magnet having 2mn poles (m being a positive integer of 1 or more, n being a positive integer of 2 or more) which are magnetized alternately to N and S polarities in equal angular spaces, a magnetic material member for closing the magnetic path of the field magnet, a rotating shaft supported by bearings provided in the housing of motor, and an armature which is secured to the shaft for rotation in the magnetic path and facing the field magnet poles. A first series of m(2n+1) armature windings are mounted on the armature and are juxtaposed with respect to each other at equal pitches, the angular spacing between the conductor portions, which contribute to generate torque, of the armature winding being equal to the angular width of the field magnet pole. A second series of m(2n+1) armature windings are also mounted on the armature and are juxtaposed with respect to each other at equal pitches, the angular spacing between the conductor portions, which contribute to generate torque, of the armature winding of the second series also being equal to the angul…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.