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http://www.freepatentsonline.com/20060266204.html

Thermite charge
Document Type and Number: United States Application 20060266204
Link to this Page: http://www.freepatentsonline.com/20060266204.html
Abstract: The present invention provides for cutting operations using linear thermite charges; the charges cut one dimensional or two dimensional geometric shapes; the invention is useful for structure entry or demolition.

http://www.freshpatents.com/Thermite-charge-dt20061130ptan20060266204.php (thorough description of patent)

http://72.14.203.104/search?q=cache:AplDCDtZYzYJ:www.journalof911studies.com/articles/Answers%2520to%2520Frequently%2520Asked%2520Questions%2520Regarding%2520Thermite.pdf+United+States+Application+20060266204&hl=en&ct=clnk&cd=1&gl=us

Interview with representative from Spectre Corporation (the assignee company for the 1999-
2001 patented linear thermite cutting device, US Patent 6183569 (Feb. 6, 2001.) Spectre
Corporation tested the device on various target materials. The cutting time was between .4 (point
four) seconds, and 2 (two) seconds for an I-beam. The number of cutters needed for an I-beam
test were 3 devices (“ganged”).These were then attached to the I-beam with either a simple
“bracket” or a “rare earth magnet.” US Patent Application 20060266204 (application published
Nov. 30, 2006), further states that the linear thermite charge apparatus is to be used for
“demolition of structures, buildings-steel reinforcing (I-beams in concrete); steel bridges, steel
hulls (ships for rescue applications and hostile applications); and general concrete removal.” The
jet of thermite is to cut through a ½ (one half) inch thick steel target “in less than one second.

(more patent info at link)