F - Mech Eng,Light,Heat,Weapons – 42 – C
Patent
F - Mech Eng,Light,Heat,Weapons
42
C
102/32
F42C 15/40 (2006.01) F42B 3/18 (2006.01)
Patent
CA 1062079
A B S T R A C T O F T H E D I S C L O S U R E AN ELECTRIC DETONATOR CAP An electric detonator cap has a casing, which accommodates an explosive detonator charge, an electrically ignitable device. for firing the detonator charge, a chargeable and discharge- able electric energy source for igniting the firing device and an electric circuit arrangement, including a controllable switch connected between the energy source and the firing device, an electric delay circuit, and a decoder. The energy source is connectable via connecting wires-extending out from the casing, to an electric current source for charging the energy source, and the decoder is electrically connected to said connecting wires and is adapted upon receipt of a specific electric firing command signal supplied through said connecting wires to actuate the delay circuit in a manner to close the switch after a predetermined delay time.
274960
Hedberg John B.g.
Westerlund Nils A.l.
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