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1. 发明授权

US4041865A Method and apparatus for detonating explosives 失效
标题翻译：引爆爆炸物的方法和装置
公开(公告)号：US4041865A
公开(公告)日：1977-08-16
申请号：US583638
申请日：1975-06-04
申请人： Seth F. Evans , Jairus Donn Hall
发明人： Seth F. Evans , Jairus Donn Hall
IPC分类号： E21B43/1185 , F42D1/05 , F42D1/04
CPC分类号： E21B43/1185 , F42D1/05
摘要： A detonating device principally intended for detonating an explosive charge in a well or borehole, and of the type which is actuated by pulling upwardly on a non-electrical line also used to lower the device into position. The device includes self-contained time-delay circuitry which requires a sustained mechanical actuating pull on the line for some predetermined time before an attempt is made to detonate the explosive. The circuitry includes a command switch actuated by pulling on the line, and a safety switch which must be closed before the command switch is closed, either manually or by hydrostatic pressure in the borehole. The circuitry locks in a safe condition if the command switch is closed first, or if one attempt has been made to fire the explosive, whether successful or not, thus allowing removal or repositioning of the device with complete safety.
摘要翻译：一种引爆装置，主要用于引爆井或井眼中的炸药，并且是通过在非电线上向上拉动而被使用的类型的引爆装置，还用于将装置降低到适当位置。该装置包括独立的延时电路，其需要在试图引爆爆炸物之前在线路上持续的机械致动拉动一段预定时间。电路包括通过拉动线路而致动的命令开关，以及在指令开关闭合之前必须关闭的安全开关，手动地或通过钻孔中的静水压力。如果首先关闭命令开关，或者是否尝试着对爆炸物进行了火警，无论成功与否，电路锁定在安全状态，从而可以完全安全地移除或重新定位设备。

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