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    Timer
    2.
    发明授权
    Timer 失效
    定时器

    公开(公告)号：US3650157A

    公开(公告)日：1972-03-21

    申请号：US1069070

    申请日：1970-01-26

    Applicant: CONTROLS CO OF AMERICA

    Inventor： STRATHEARN DONALD M ,  THORNBERY JAMES M ,  WILLCOX DALE F

    IPC: F16H31/00 ,  H01H43/12 ,  F16H29/00

    CPC classification number: F16H31/004 ,  H01H43/124 ,  Y10T74/1518 ,  Y10T74/2133 ,  Y10T74/214

    Abstract: Depressing one of the cycle selection switches sets up a circuit through the shaded pole motor to drive the timer at high speed until the wiper on the end of the cam arbor finds an open circuit on the printed circuit board. During the high speed advance of the timer, the machine circuits are de-energized and, upon finding the open circuit, the shaded pole motor is de-energized, the machine circuits are energized, and the timer drive motor is actuated to sequence the timer through the selected cycle. The stepping mechanism is operated by the slow rise fast drop cam operating a pawl which engages the ratchet teeth on the cam arbor. Particularly during high speed advance, there may be a tendency for the arbor to overstep and, therefore, the pawl, in effect, is a double pawl or verge which jams two teeth at the conclusion of a step. This locks the ratchet in the stepcompleted position. Switching during an interval is accomplished by means of cams associated with the stepping cam and actuating sub-interval switches. This enables the performance of various functions during an interval of the timer. This type of timer is generally referred to as a power timer.

    Abstract translation: 按下其中一个循环选择开关，通过阴极电机设置电路，以高速驱动定时器，直到凸轮轴端部的刮水器在印刷电路板上发现开路。 在定时器的高速提前期间，机器电路断电，并且在找到开路时，阴极电机被断电，机器电路被通电，并且定时器驱动电机被致动以对定时器进行排序 通过选择的周期。 步进机构由缓慢上升的快速下降凸轮操作，该凸轮操作与凸轮轴上的棘齿啮合的棘爪。 特别是在高速提前期间，心轴可能有过度的倾向，因此棘爪实际上是在步骤结束时卡住两个牙齿的双爪或边缘。 这将棘轮锁定在步骤完成位置。 通过与步进凸轮相关联的凸轮和致动子间隔开关来实现间隔期间的切换。 这使得能够在定时器的间隔期间执行各种功能。 这种类型的定时器通常被称为功率计时器。

    Timer
    3.
    发明授权
    Timer 失效

    公开(公告)号：US3564279A

    公开(公告)日：1971-02-16

    申请号：US3564279D

    申请日：1960-09-14

    Applicant: CONTROLS CO OF AMERICA

    Inventor： STRATHEARN DONALD M ,  THORNBERY JAMES M ,  WILLCOX DALE F

    IPC: D06F39/00 ,  H01H43/12

    CPC classification number: D06F39/005 ,  H01H43/124 ,  Y10T307/951

    Abstract: The combination with a timer of the type having a motor for driving, a switch operating cam bank at timing speed through a transmission, of means for driving the cam bank to a preselected starting position comprising, a second motor for driving the cam bank through said transmission, means responsive to energization of the second motor to deenergize the first motor and responsive to deenergization of the second motor to energize the first motor, and clutch means operative upon deenergization of the second motor to disengage the second motor from the transmission to thereby remove the inertia of the second motor from the transmission.

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