http://beltswords.com/shop/
http://beltswords.com/shop/index.php?main_page=page_4
The RazorSword
" The Soul of the Sword is Reborn
Totally Concealed Massive Sword
More incredible than any science fiction thriller…RazorRazor has reinvented a massive sword (RazorSword) into a complete modern and concealed weapon system, called the BeltSword System. For the first time in the history on Planet Earth; we have a practical, lethal, and totally concealed massive sword fitted into a weapon system called the BeltSword. The massive sword (RazorSword) is worn totally hidden around your waist, behind your leather belt, and in total comfort. The massive RazorSword is instantly accessible! At a mere touch, strike mode is initiated; deployment is “Lightening Fast”!
“Search me…you can’t find it.” The BeltSword System allows you to conceal and totally hide a massive 1.5 inch wide by 33 inch long sword hidden behind your belt. (We have concealed prototype RazorSwords as large as 2 inches wide by 36 inches long) The belt, sword, and containment system have been designed as an integrated weapon system. (SWIFTS – Stealth Weapons & Integrated-Failsafe-Tactical-Systems) The RazorSword is made from specially formulated battle ready high carbon spring steel—the tempering/hardening and formulated metallurgy is a proprietary secret.
“Futuristic Super-Weapon” Curtis W. Koehler (Born and lives in Wisconsin) is the inventor of the patent pending system that allows a massive double-edged RazorSword to strike instantly from out of “thin air”! The BeltSword System contains a “Flexible Linked Tunnel of High Carbon Spring Steel” that forms a “Protective Containment System” for the RazorSword. This patent pending “tunnel” allows the RazorSword to easily slide in and out of the containment system. It also conceals the sword (protects the wearer) while the entire system remains hidden. (Virtually undetectable)
Lightening Fast! Your enemy…can’t--see it, hear it, or stop it…until it’s too late”. Design features apply the laws of physics; force, energy, mass, and change. We have developed an engineering mechanical advantage to redirect the energy of a massive spring steel sword, bend it, control it, and release it instantly. The BeltSword System redirects this energy; bending the belt, containment system and sword around your waist. When adjusted properly the RazorSword is worn in such total comfort, you will forget that you are wearing it."
http://www.razordagger.com/
interesting idea from the past
http://en.wikipedia.org/wiki/Urumi