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    • 13. 再颁专利
    • Electromotive chain saw
    • 电动链锯
    • USRE37832E1
    • 2002-09-10
    • US09636652
    • 2000-08-09
    • Kazuya NakamuraMakoto MizutaniMasaki Kondo
    • Kazuya NakamuraMakoto MizutaniMasaki Kondo
    • B27B1700
    • H02P3/04B27B17/083Y10S83/01
    • The chain of an electromotive chain saw is quickly stopped by the combined use of an electric brake and a mechanical brake when a trigger member is turned off. The rear end of a brake band disposed to tighten a brake drum by operating a hand guard is secured to a bent rod. When the trigger member is released, the brake band is normally tightened around the outer periphery of a brake drum by the urging force of a coil spring. When the trigger member is released, a circuit provided with a brake winding is closed, thereby applying a dynamic braking force. When the dynamic brake force is applied, a centrifugal clutch is released quickly and the speed of stopping the brake drum is accelerated.
    • 当触发器件关闭时,电动链锯的链条通过组合使用电动制动器和机械制动器而迅速停止。 通过操作防护罩来将制动带的后端固定到弯曲的杆上。 当触发构件被释放时,制动带通常由螺旋弹簧的作用力围绕制动鼓的外周被紧固。 当触发构件被释放时,设置有制动绕组的电路关闭,从而施加动态制动力。 当施加动态制动力时,快速释放离心式离合器并且加速制动鼓的停止速度。
    • 19. 发明申请
    • AC MOTOR DRIVE DEVICE
    • 交流电机驱动装置
    • US20130307462A1
    • 2013-11-21
    • US13981473
    • 2011-03-28
    • Manabu OhashiKazuya Nakamura
    • Manabu OhashiKazuya Nakamura
    • H02P27/06
    • H02P27/06H02M1/32H02P3/22H02P2201/03H02P2201/07Y02P80/116
    • A circuit disconnection element that can open or short-circuit between a power storage element and a step-up/step-down bidirectional chopper circuit is provided in a power storage system, thereby preventing a self-discharge state in a process of charging. Furthermore, at the time of occurrence of an abnormality, the power storage element is detached from other devices including the step-up/step-down bidirectional chopper circuit. Accordingly, an energy loss of the power storage element at the time of power regeneration can be reduced to improve the energy use efficiency. Further, breakage influences such that the power storage element causes breakage in other devices at the time of occurrence of the abnormality can be prevented, thereby enabling to obtain an AC motor drive device having mounted therein a highly safe power storage system.
    • 在蓄电系统中设置有能够在蓄电元件与升压/降压双向斩波电路之间断开或短路的电路断路元件,从而防止充电过程中的自放电状态。 此外,在异常发生时,蓄电元件与包括升压/降压双向斩波电路的其他装置分离。 因此,可以降低功率再生时的蓄电元件的能量损失,提高能量利用效率。 此外,可以防止在发生异常时蓄电元件导致其他装置中的断线的破损,从而能够获得安装有高度安全的蓄电系统的交流电动机驱动装置。