Electrical generator or motor structure – Dynamoelectric – Linear
Reexamination Certificate
2005-09-13
2005-09-13
Schuberg, Darren (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Linear
C318S135000
Reexamination Certificate
active
06943465
ABSTRACT:
To reduce the magnetic flux leakage through the gap between magnetic pole teeth of an armature so as to reduce the magnetic attraction force generated between the armature and a needle, an armature unit is provided with two magnetic poles1and2, on the top of which are magnetic pole teeth11a, 12b, 21b, and22aprotruding toward the opposing magnetic pole, where the magnetic pole teeth of the magnetic pole1are arranged at two heights, upper and lower, and the magnetic pole teeth of the opposing magnetic pole2are arranged at two heights, upper and lower, so that the magnetic flux flows upward and downward alternately between the upper and lower magnetic pole teeth. The needle6equipped with permanent magnets moves relatively in the gap8between the upper and lower magnetic pole surfaces of the armature unit.
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Katayama Hiroshi
Kim Houng Joong
Maki Kohji
Antonelli Terry Stout & Kraus LLP
Hitachi , Ltd.
Scheuermann David W.
Schuberg Darren
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