Weiner, Carrier, Burt & Esser, P.C.
Active suspension system
 In an active suspension system, an electromagnetic actuator is interposed between a tube connected to a vehicle body and a rod connected to a wheel. The electromagnetic actuator includes a motor vertically slidably accommodated within the tube and supported in a floating manner by motor supporting springs, and a ball screw driven by the motor. The displacement between the vehicle body and the wheel and the load are controlled by driving the ball screw by the motor. When a fierce load is applied from the wheel, the motor itself resiliently moves upwardly while compressing one of the motor supporting springs, thereby permitting the upward movement of the rod to prevent the locking of the active suspension system, leading to an enhanced riding comfort. 
Honda Giken Kogyo Kabushiki Kaisha
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Hirotada Tsukasa Takuju Masaki
Ito Fukuzato Nakamura Izawa