Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-10-31
2006-10-31
Le, Dang (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S233000
Reexamination Certificate
active
07129610
ABSTRACT:
A commutator includes a support ring and a plurality of conducting segments arranged over a circumference of the support ring. Some of the conducting segments have an electrically insulating portion. The commutator is employed with a device that measures rotation of an electric motor rotor shaft. The commutator is fitted onto the electric motor rotor shaft. A commutator housing includes at least three brushes and comes into contact with the conducting segments of the commutator. At least one of the brushes contacts the electrically insulating portions of the commutator segments to provide an electrical measurement that enables the speed, the direction of rotation and the angular position of the electric motor rotor shaft to be determined.
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French Search Report dated Nov. 26, 2004.
Mirescu Dan
Raoul Philippe
ArvinMeritor Light Vehicle Systems-France
Le Dang
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