Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masatoshi Fujimoto0
Masafumi Okazaki0
Osamu Waku0
Masayoshi Yamamoto0
Kyohei Yamamoto0
Date of Patent
August 18, 2009
0Patent Application Number
114935970
Date Filed
July 27, 2006
0Patent Primary Examiner
Patent abstract
An electric power steering apparatus includes; a DC brush motor, and a boss arranged between an output shaft of the motor and an input shaft driven by the motor, for transmitting a rotational force of the motor from the output shaft to the input shaft by the boss per se. A weight of the boss is equal to or larger than 10% of a weight of a rotor of the motor. An electric power steering apparatus includes; a DC brush motor and a boss arranged between the output shaft of the motor and the input shaft driven by the motor, for transmitting the rotational force of the motor from the output shaft to the input shaft by the boss per se. A moment of inertia of the boss is equal to or larger than 10% of a moment of inertia of the rotor of the motor.
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