Patent ID: 7290445

Claim:
A smoke generating device for generating smoke to be discharged into air near the device comprising: a flexible collapsible hollow container fluidly connected to a flexible elongated extension and including a compressible cavity that is made from a material having a memory of an original shape that may be mechanically deformed and thereafter assumes the original shape and said flexible extension having two ends and a sidewall that defines a chamber, one end of said flexible extension being in fluid connection with said collapsible hollow container, a second end of said flexible extension being sealed; at least one ampoule coaxially arranged inside said flexible extension chamber comprising a wall of an inert rigid breakable material filled with a liquid reagent capable of generating aerosol when exposed to air; and, a porous flexible material filling a space between the wall of said at least one ampoule and the sidewall that defines a chamber of said flexible extension and exerting friction against said flexible extension chamber to secure said ampoule in place; wherein said smoke generating device operates by bending said flexible extension to crush the at least one ampoule to cause a soaking of said porous flexible material by said reagent, said second end of said flexible extension is removed to allow atmospheric pressure external to the flexible collapsible hollow container to draw air into an opening created by the removal of said second end such that the air passes over said liquid reagent to be enriched with said liquid reagent and expand said collapsible hollow container and the compressible cavity is compressed to expel the air therefrom.