F - Mech Eng,Light,Heat,Weapons – 42 – B
Patent
F - Mech Eng,Light,Heat,Weapons
42
B
102/37
F42B 3/24 (2006.01) F42B 3/10 (2006.01) F42D 1/04 (2006.01)
Patent
CA 2034036
An improved detonation transfer apparatus is set forth. In one embodiment, it incorporates a transverse bulkhead having selected explosive materials on both sides thereof. The bulkhead is shaped into a concave lens to focus the shock wave toward a focal point so that one of the explosive materials directs a shock wave into the other of the explosive materials, thereby triggering sufficient shock wave pressure for detonation. In an alternate embodiment, a blasting cap transfers detonation to a first secondary explosive material which forms a flyer; the flyer travels across the space, impacting with a metal transverse bulkhead which in turn transfers a shock wave through the bulkhead into another explosive shaped in the form of a pellet. This has a high impedance reflector plate in it. The reflector plate is approximately parallel to the transverse bulkhead so that shock wave reflection occurs at the plate and further increases shock wave pressure, thereby exceeding the levels necessary for detonation, and detonation is thereby transferred into the detonating cord.
Halliburton Logging Services Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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