G - Physics – 09 – F
Patent
G - Physics
09
F
40/39
G09F 7/00 (2006.01) G09F 9/37 (2006.01)
Patent
CA 1214329
ABSTRACT OF THE DISCLOSURE A rotating display element is provided with a display surface structure which has a plurality of display surfaces and is mounted on a rotor of a permanent magnet type step- ping motor mechanism in a manner to incorporate therein the stepping motor mechanism. The display surfaces of the dis- play surface structure are disposed side by side around the axis of the rotor. The rotor is provided with a double- pole permanent magnet member having north and south magnetic poles spaced apart a 180° angular distance around the axis of the rotor. A stator of the stepping motor mechanism is provided with a first magnetic member having first and second magnetic poles disposed at 180° intervals around the axis of the rotor, a second magnetic member having third and fourth magnetic poles disposed at 90° intervals around the axis of the rotor, a first exciting winding wound on the first magnetic member and a second exciting winding wound o the second magnetic member. A display unit is provided with the rotating display element and a driving device for driving it. The driving device has first and second power supply means for supply- ing power to the first exciting winding in reverse direct- ions and third and fourth power supply means for supplying power to the second exciting winding in reverse directions. - 47 -
427008
Borden Ladner Gervais Llp
Wakatake Yoshimasa
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