IEDs - Disposing of Terrorist Bombs - Kevlar Concept

Invented around 1990. Placed on the Internet Feb. 2010

This is actually something I invented in 1990, for a somewhat different purpose. I had only recently realized that people are still dying and that there is great need for it. I had not realized that I had neglected to maintain a web-page on this device, and I apologize to anyone who has been injured while trying to disable IEDs or other bombs.

This concept has two rather different functions. The first one, the reason I invented it in 1990, was to "put out the terrorist ignited fires in oilwells". The second is in disposing of IEDs (improvized explosive devices).

It is approximately the size and shape of a thick plastic 55-gallon drum. It has an open bottom and sides, and an open top, so it is essentially just a tube. It tapers, from around 2 foot diameter at the ground to 3 foot diameter at the top, four feet high. The entire thing is made of many layers, maybe a dozen, of Kevlar. Kevlar is the fabric that is used to make bullet proof vests. The dozen thin layers of Kevlar in the half-inch thick walls would ensure that nothing could penetrate the walls. The open top directs all blast debris directly upward (and also downward into causing a small diameter crater in the street which can be quickly filled).

Text Font Face
Text Size
(for printing)
This was first invented around 1990. This presentation was first placed on the Internet in February 2010.

Public Service
Self-Sufficiency - Many Suggestions

Environmental Subjects

Scientific Subjects

Advanced Physics

Social Subjects

Religious Subjects

Public Services Home Page

Main Menu

The proposed device with a suspected bomb on the ground inside it.

If the bomb expert feels safe enough to closely approach the IED, he would simply place the 30 pound Kevlar cylinder around the spot where the bomb was sitting, carefully avoiding touching the bomb. There would be several types of (sacrificial) triggers inside the cylinder. For example, a spark or cigarette lighter to try fire, radio waves, cel phone signals, or most likely, a simple solenoid release of one or more weights to drop onto the bomb.

All people nearby, including the bomb expert, should be safe. The debris should be launched nearly straight up at extreme velocity, to later fall harmlessly.

The original version was slightly more complicated, being two HALF cylinders, each on long, sturdy support arms. If a raging oilwell fire was burning, it is too hot to approach very close, and there would be no way to place a cylinder OVER it. So a robot device (a tank) with 50 foot long hydraulically controlled support arms would have the two halves of the cylinder ahead of it. The tank would be remotely controlled to approach the oilwell (or bomb), using video. Once in the correct position, the hydraulic arms would be brought together to form the cylinder.

For a burning oil well, a small bomb would be included, where the resulting shock wave in the air would interrupt the flame. The tank could then have flexible piping of carbon dioxide as fire extinguisher.

Using this more complex version, for a really dangerous bomb or IED, no human would have to approach it. The tank, the "clamshell" and then the triggering of the bomb to detonate it.

There is only one item in this graphic, the tapered shape cylinder. A side view might show it not having a top or bottom, but then the other (animation) images (which I would create) would just show a visual flash and then shrapnel flying up out of the top of it.

Showing another usage of the simpler version

This presentation was first placed on the Internet in February 2010.

This page - - - - is at
This subject presentation was last updated on - -

Link to the Public Services Home Page

Link to the Science Projects Index - Public Service

E-mail to:

C Johnson, Theoretical Physicist, Physics Degree from Univ of Chicago