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    • 2. 发明授权
    • Ground fault apparatus and protection system
    • 接地故障装置及保护系统
    • US4233640A
    • 1980-11-11
    • US24229
    • 1979-03-26
    • Keith W. KleinJoseph M. PalmieriGregory C. Eckart
    • Keith W. KleinJoseph M. PalmieriGregory C. Eckart
    • H02H3/347
    • H02H3/347
    • A unique ground fault circuit interrupting (GFCI) device is utilized to control either an industrial circuit breaker or a contactor in protecting a large power distribution circuit against ground faults. The GFCI device is equipped with plural sets of switch contacts which are actuated incident with tripping of the GFCI device. The particular switch contacts are selected to control energization of an actuator adapted to the circuit breaker or contactor, depending on the actuator type. A ground fault sensor responds to ground faults on the distribution circuit by injecting a current imbalancing signal into the GFCI device, causing it to trip. The consequent switch contact actuation initiates operation of the circuit breaker or contactor to interrupt the distribution circuit.
    • 使用独特的接地故障电路中断(GFCI)装置来控制工业断路器或接触器,以保护大型配电电路免受接地故障。 GFCI装置配备有多组开关触点,这些开关触点与GFCI装置的跳闸一起启动。 选择特定的开关触点以根据致动器类型来控制适于断路器或接触器的致动器的通电。 接地故障传感器通过向GFCI设备注入电流不平衡信号,使其跳闸,从而对配电电路的接地故障作出响应。 随后的开关触点致动启动断路器或接触器的操作以中断配电电路。
    • 10. 发明授权
    • Self-cleating rope holder
    • 自清洁绳架
    • US4178661A
    • 1979-12-18
    • US911374
    • 1978-06-01
    • Keith W. Klein
    • Keith W. Klein
    • F16G11/00
    • F16G11/00Y10T24/3918
    • A rope holder includes a body having anchoring means facilitating attachment to a member. The free end of a rope leading from an object to be tied down, is threaded through a first aperture and then a second aperture, both formed in the body. Also formed in body is a V-shaped notch having its wide end in open communication with the second aperture. The rope is pulled tight through the two apertures and then moved laterally out of the second aperture into the slot, where it is wedged to maintain the desired rope tightness.
    • 绳索保持器包括具有便于附接到构件的锚定装置的主体。 从被捆扎物体引出的绳索的自由端穿过第一孔,然后穿过第二孔,两者都形成在体内。 还形成在本体中的V形凹口具有与第二孔开放连通的宽端。 绳索被拉紧通过两个孔,然后横向从第二孔中移出到槽中,其中楔入以保持所需的绳索紧度。