How to create a surface? using loft, Patch, revolve?

[tigerpix]

Hi,

I’m making a model that requires to have a curved surface.
The Bellow image shows the curve that I’m trying to create.

I tried to use Loft, Patch, revolve and ExtrudeCrvTapered none of them works!
Can you please help me on how I can achieve this curve.

Thanks,

loft.3dm (459.4 KB)

[DiegoKrause]

maybe something like this

or this, using FilletEdge