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Soon after hot air was used to create a lighter than air vessel, light gasses, especially hydrogen, were used to the same effect.

Now the weight of the air is known: a cubic metre of it weighs 1293 kilogrammes, that is to say, about 1300 grammes, when the temperature is at zero and the barometer indicates 760 millimetres. On the other hand, there are "light" gasses, such as the gas used for illuminating purposes and hydrogen. A cubic metre of lighting gas, at zero, weighs about 500 grammes, and a cubic metre of hydrogen, under the same condition, weighs only 110 grammes.[1]


Enclosing categories LTA
Subcategories Helium, Hydrogen, Coal gas
Keywords Balloon, Ballonet
Start year
End year

This wiki has 166 patents in category "Gas". Other techtypes related to Gas: Aerostat, AU 90.1, Ballonet, Compartments, CPC C01B3/06, CPC C01B3/061, Hot air, Schutte-Lanz (aircraft), USPC 244/5, USPC 446/220, USPC 446/225, USPC 92/131

Patents in category Gas