Patent ID: 7283055

Claim:
A warning device that a manhole cover or a service box cover or a metal pole for street lights, traffic lights and transformers has become dangerously electrically charged and people should stay off them and their surrounding areas to avoid being electrocuted or injured by severe electric shock, comprising: (a) a warning light or sound generator that goes on when the cover or box or metal poles become electrically charged; (b) an attachment that attaches the warning device to cover or box frames and metal poles; (c) a waterproof outside metal casing that houses the warning device; (d) a light source, that can be powered by electricity from the manhole cover or service box cover or metal pole, including at least one of a bulb with a filament, light emitting diodes, electro luminescence devices, neon gas bulbs, florescent bulbs or other light source, that is the color red or some other color; (e) a sound source that can be powered by electricity from the charged manhole or service box covers or metal poles, including at least one of mechanical buzzers, piezo buzzers, self drive piezo transducers, external drive piezo transducers, beepers, sirens, intermittent beepers and other sound makers; (f) a metal ground rod that is deposited in or on the ground for a negative charge; (g) non conductive insulation that separates a positive charged casing from the negative ground rod; (h) and a lens for the warning light to pass through that is the color red or some other color; and (i) whereby the warning device can be flat, round or curved.