Patent ID: 7578225

Claim:
A smoke generator ( 30 ) for the production of white and black smoke ( 35 ), comprising: (a) a vehicle ( 37 ) to house a smoke generator ( 30 ) components (b) a white smoke burn box ( 50 ) to produce white smoke ( 35 ) (c) a black smoke burn box ( 51 ) to produce of black smoke ( 35 ) (d) a smoke plenum box ( 52 ) to control smoke ( 35 ) turbulence (e) a speed control fan assembly ( 54 ) contained within a fan housing ( 67 ) (f) a laminar flow tub assembly ( 63 ) welded ( 94 ) to the inner wall of a laminar flow housing ( 53 ) (g) a photocell assembly ( 43 ) to measure the smoke ( 35 ) opacity (h) a stack elbow ( 60 ) to direct the smoke ( 35 ) horizontally with the direction of the prevailing wind (i) a electric motor belt drive system ( 59 ) to rotate a stack elbow into the direction of a prevailing wind comprising an electric motor ( 73 ), a drive shaft ( 72 ) to transmit electric motor ( 73 ) torque to rotate stack ring ( 83 ), a coupling ( 76 ) to compensate for drive shaft ( 72 ) misalignment, brackets ( 75 ) to guide said drive shaft ( 72 ), and a pulley disc ( 74 ) to mount belt ( 77 ) (j) a gravity-fed white smoke fuel system ( 55 ) to supply diesel fuel ( 98 ) to said white smoke burn box ( 50 ) (k) a gravity-fed black smoke fuel system ( 56 ) to supply toluene fuel ( 128 ) to said black smoke burn box ( 51 ) (l) a background screen ( 57 ) to enhance visual contrast of said smoke ( 35 ) opacity (m) said background screen ( 57 ) contiguously attached by welds ( 94 ) to said stack ring ( 83 ) by at least two rods ( 82 ) (n) a wind directional indicator ( 61 ) to visually determining the direction of the prevailing wind (o) an electric system connecting a control console and all other electrical components, comprising an electrical generator and an electrical DC power supply comprising an initially fully charged battery to supply at least thirty minutes of power in case of failure of said electrical generator.