초록 ▼

An apparatus for detonating explosive charges at a given location in response to an initiation at a remote location and after a preselected delay comprises a non-electrical initiation device for generating a non-electrical energy input by detonation or pyrotechnical combustion at the given location

An apparatus for detonating explosive charges at a given location in response to an initiation at a remote location and after a preselected delay comprises a non-electrical initiation device for generating a non-electrical energy input by detonation or pyrotechnical combustion at the given location and initiated at the remote location, and an electrical igniter also at the given location responsive to the initiation device for time-delayed ignition of the explosive charge. The electrical igniter includes a transducer for generating an electrical output signal in response to the non-electrical energy input, an electronic variable time delay igniter in close proximity to the transducer for setting a preselected time delay and for generating a time delayed electrical output signal and an igniter also in close proximity to the electronic time delay means for initiating the ignition of the explosive charge. The transducer, the electronic time delay igniter, and the electrical the igniter are connected together by a first and a second pair of short electrical conductors constituting the only electrical conductors in the detonating apparatus, thereby minimizing the possibility of a spurious signal being generated in the electrical conductors.

대표청구항 ▼

An apparatus for detonating at least one explosive charge at a given location in response to an initiation at a remote location and after a preselected time delay, said apparatus comprising: a) non-electrical initiation means comprising means for generating a non-electrical energy input by detonatio

An apparatus for detonating at least one explosive charge at a given location in response to an initiation at a remote location and after a preselected time delay, said apparatus comprising: a) non-electrical initiation means comprising means for generating a non-electrical energy input by detonation or by pyrotechnical combustion at said given location and initiated at said remote location; and b) an electrical igniting means also provided at said given location and responsive to said initiation means for time-delayed ignition of said explosive charge said electrical igniting means including: 1) transducer means for generating an electrical output signal in response to said non-electrical energy input; 2) an electronic variable time delay means in close proximity to said transducer means for setting a preselected time delay and for generating in response to said electrical output signal from said transducer means a time delayed electrical output signal whose signal delay corresponds to said preselected delay and is substantially independent of the magnitude of said electrical input signal from said transducer means; 3) igniter means also in close proximity to said electronic time delay means and responsive to the electrical output signal from said electronic time delay means for initiating the ignition of said explosive charge; and 4) a first pair of short electrical conductors for interconnecting the output of said transducer means with the input of said electronic time delay means and a second pair of short electrical conductors for interconnecting the output of said electronic time delay means with the input of the igniter means, said first and second pair of conductors constituting the only electrical conductors in said detonating apparatus; whereby the initiation of the explosive charge requires the transmission of electrical signals over said short pairs of electrical conductors, said short pairs of electrical conductors thereby minimizing the possibility of a sperious signal being generated in said short pairs of electrical conductors which could result in the inadvertent detonation of the explosive charge.