Electricity: motive power systems – Motor-reversing
Reexamination Certificate
2007-05-01
2007-05-01
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Motor-reversing
C318S282000, C318S599000, C318S286000
Reexamination Certificate
active
11445396
ABSTRACT:
Provided is a motor having a magnetic polar unit in which a permanent magnetic polar array having arranged therein alternately a plurality of permanent magnetic polar elements in alternate opposite poles is made to face a plurality of electromagnetic coil arrays alternately excited at opposite poles, and the permanent magnetic polar array is made to move thereby; wherein the motor further comprises a sensor for detecting the periodical magnetic change accompanying the movement of the permanent magnetic polar array, the output of the sensor is directly returned as a direct drive waveform to the electromagnetic coils, and this drive circuit forms the excitation signal based on the return signal.
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Communication from Japanese Patent Office regarding corresponding application.
Communication from Japanese Patent Office regarding counterpart application.
Donovan Lincoln
Harness & Dickey & Pierce P.L.C.
McCloud Renata
Seiko Epson Corporation
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