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    • 10. 发明授权
    • Automatic reset timer
    • 自动复位定时器
    • US3968698A
    • 1976-07-13
    • US333767
    • 1973-02-20
    • John L. Harris
    • John L. Harris
    • G04F3/06F16H5/74
    • G04F3/06Y10T74/114
    • An automatic reset timer includes two separate switches having operators held in timed out position by individual latches. A clutch is released by one operator when the timer is timed out. A solenoid also controls the latches for the two switches and also controls the clutch directly. A clutch mode selector is accessible outside the case and may be set for on delay, off delay, or neutral. In neutral the clutch is not controlled by the solenoid and is released only when the timer is timed out. Other mode selectors outside the enclosure control solenoid operation of the switches. They may be caused to transfer from timed out to timing position by either solenoid energization or deenergization. A third position provides for instantaneous operation of one switch by the solenoid. Selection of clutch and switch modes of operation makes a single unit field adjustable in many different combinations, simplifying application to a given problem and reducing models required to be stocked.
    • 自动复位定时器包括两个单独的开关,操作者通过各个锁存器保持在超时位置。 当定时器超时时,一个操作员释放离合器。 电磁阀还控制两个开关的闩锁,并直接控制离合器。 离合器模式选择器可在外壳外部进入,可设置为延时,断开延迟或中性。 在空档状态下,离合器不受电磁阀控制,只有当定时器超时时才释放。 外壳外的其他模式选择器控制电磁阀操作的开关。 可能会由于电磁阀通电或断电而导致从定时转移到定时位置。 第三个位置提供了螺线管对一个开关的瞬时操作。 离合器和开关操作模式的选择使单个单元现场可以以许多不同的组合进行调整,从而简化了给定问题的应用,减少了需要存放的模型。