Portable Battery Operated Electric Smoke Generator.
Patent, Filed 4 Apr 80, patented 20 Apr 82,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A portable battery-powered electric smoke generator for simulating the smoke of a fire for training purposes includes a tubular housing enclosing a rechargeable battery power supply having terminals connected to the ends of a tubular metallic coil filled with a vaporizable smoke producing liquid. One end of the tubular coil communicates with a smoke discharge port at one end of the housing. The discharge port is sealed by a fusible disk and communicates with an apertured smoke release cup. An electric switch arrangement, either thermal or electronic, is provided on the housing in the circuit between the coil and power supply for energizing the tubular coil for a time sufficient to superheat the vaporizable liquid therein. The heat of the tubular coil melts the fusible disk to release the superheated liquid through the smoke release cap into the atmosphere as a vapor simulating smoke. The liquid may be mineral oil, polyethylene glycol 200 or propylene glycol.