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1. 发明授权

US3857234A Digital timer means and method of making the same 失效
标题翻译：数字定时器及其制造方法
公开(公告)号：US3857234A
公开(公告)日：1974-12-31
申请号：US39002473
申请日：1973-08-20
申请人： ROBERTSHAW CONTROLS CO
发明人： FLUMM P , HARRIS V
IPC分类号： G04F3/08 , G04F3/04
CPC分类号： G04F3/08
摘要： A digital timer having a timer mechanism and a drive unit carried by a frame together with a setting device to set a selected period of time that the timer mechanism is to run and for interconnecting the drive unit to the timer mechanism to cause the drive unit to drive the timer mechanism for only that set period of time. The timer mechanism has digital reading members for directly indicating the setting of the timer mechanism to the selected period of time with such digital reading members providing a countdown readout of the set period of time as the same is elapsing.
摘要翻译：一种数字定时器，具有定时器机构和由框架与设置装置一起承载的驱动单元，以设置定时器机构将要运行的选定时间段，并将驱动单元与定时器机构互连，以使驱动单元仅在设定的时间段内驱动定时器机制。定时器机构具有数字读取部件，用于将定时器机构的设置直接指示到所选择的时间段，其中这些数字读取部件同时提供设定的时间段的倒计时读出。

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