Balloon for lighted sign comprising an inflatable envelope...

Details Balloon for lighted sign comprising an inflatable envelope... Balloon for lighted sign comprising an inflatable envelope...

G - Physics

09

F

G09F 21/06 (2006.01) F21S 8/00 (2006.01) F21V 33/00 (2006.01) G01P 5/00 (2006.01) G01P 5/02 (2006.01)

Patent

CA 2437547

A balloon comprising an envelope 12 inflatable by a gas, in particular air, an anemometer 32 for detection of the wind speed outside the envelope, and a control circuit 34 to control a fan 16 so as to make the internal inflation pressure of the envelope 12 vary according to the wind speed. The top part 14A of the mast passes vertically through the envelope 12 to give the latter a static rigidity at the level of the diametrically opposed bottom pole 18 and top pole 26, the mast 14 being hollow and comprising at least one air outlet orifice 46 in its top part 14A to perform inflation of the envelope 12 by the electro- pneumatic means 15.

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