发明名称 Alarm system
摘要 A control circuit utilizing: a counter which provides first and second output signals at spaced apart time intervals and delay means for stopping and starting the counter; and switch means having start and stop inputs and an output connected to the delay means of the counter. The switch means, being arranged to start the counter when the start input is energized, and being arranged to stop the counter when the stop input is energized. The stop input of the switch means being actuated by the first counter output signal.
申请公布号 US4188621(A) 申请公布日期 1980.02.12
申请号 US19780870337 申请日期 1978.01.18
申请人 DAN MAR CO INC 发明人 HECKELMAN, JAMES D;ZIEMKE, ROBERT A
分类号 B60R25/10;G08B13/00;(IPC1-7):B60R25/00;G08B13/22 主分类号 B60R25/10
代理机构 代理人
主权项
地址