The first patent of 26 November 1901 described a supplied wing boat and an articulated tail as those of a bird. (cf. Figure 1).
The idea of ++Mr ++Ader derived the observation of children playing with flat stones launched on the surface of the water.
The boat comprised a mechanism to unfold wing and tail and had to be equipped an engine to two speeds. It was equally anticipated casters under the flat shell to displace the machine on earth.
:Under the impetus the boat exited the water, then the incline of wings and the tail as well as the increase of the speed of the propeller allowed to make fly the boat to the over the water (cf. Figure 2).
Some some leaves it was a plane flying above the water.
Three years after ++Mr ++Ader brings an important modification to its slippery boat. It notices in the course its tests that there is pressure lack under the wing and the tail of the boat.
It adds therefore pipings of air pill that it sends under wings (cf. Figure 3) This air compressed was manufactured by a pump, the necessary pressure to raise the boat was 1 / 20 atmosphere. The air thus brought under the wing formed a pneumatic skate on which the boat slipped it allowing to reach large speeds.
With the addition of this process by report to the first patent can truly compare the invention of ++Mr ++ADER to our hovercrafts and to assert that Clement ++ADER is the first inventor of an engine on cushion air.
