Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2008-03-25
2011-12-06
Benson, Walter (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S400040, C318S400300, C310S179000, C310S180000, C310S186000
Reexamination Certificate
active
08072166
ABSTRACT:
The brushless motor has a first and second drive member. The first drive member is equipped with M phase coil groups each having N electromagnetic coils where M is an integer of 1 or greater and N is an integer of 1 or greater. The second drive member has a plurality of permanent magnets, and is able to move relative to the first drive member. The first drive member has 2 (M×N) magnetic body cores. Each phase electromagnetic coil is coiled on a periodically selected magnetic body core at a ratio of 1 to 2M from among the arrangement of 2 (M×N) magnetic body cores.
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Machine translation of JP11055918A published Feb. 1999.
Nakamura Kazuyoshi
Sejimo Isamu
Sugimoto Mamoru
Takeuchi Kesatoshi
Benson Walter
Chan Kawing
Harness, Dickey & Pierce P.L.C
Seiko Epson Corporation
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