Appeal No. 1998-2356
Application 08/373,860
APPENDIX
1. A lighter than air balloon enclosing a light source, comprising a balloon containing helium, the
balloon being secured at pole level by a feeder cable, the light source being positioned approximately in
the middle of the balloon, the light source having a power up to about 6,500 watts, sufficient helium
being employed for cooling purposes, the light source being supported by a rod, attached to the pole,
the balloon being characterized by: a thin, flexible, elastic and expandable inner envelope transparent to
the outward flow of light and heat radiation without damage to the inner envelope, and impervious to
the helium, and an outer envelope surrounding the inner envelope and made of a colored material, with
optical properties which enable the outer envelope to receive and diffuse light from the inner envelope,
without dazzling a viewer, and providing effective, ground based lighting.
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