Anti-theft alarm for air powered hand tools

作者: Richard H. Rand

DOI:

关键词:

摘要: An alarm system for securing an air powered hand tool having a threaded female intake coupling. The sensor has secured and unsecured state which is detectable by system. includes housing elongate cord containing first second conductor extending from the electrical communication with A male coupling rotatably mounted to cooperatively engage switch carried connected between conductors. responsive relative position of respect By unscrewing coupling, placed in state.

参考文章(6)
David R. Wachsman, Electronic security clip device ,(1996)
Terrance Surma, Roger J. Leyden, Alarm system sensing and triggering apparatus ,(1982)
Terrance Surma, Roger J. Leyden, Mountable product sensor and display stand ,(1991)
Frederick W. Millar, Pressure-responsive security alarm ,(1988)