Hi rollupswx,
My version of Inventor is 2011.
Slept on it and worked it out. I was trying to use the Sweep command but couldn't get the "Path" right. What also confused me was the need to have 2 sketches visible. I had the start and finish circle sketches visible and was trying to get it to sweep between the two and was getting error messages that I couldn't resolve.
I've attached my file which works just fine for me, mind you I think I'm not quite got the whole thing right. As you will see I've extruded the shape in two directions and added extra sketches to get that to work, which I don't think is right, so I will re-visit the problem again.
Best Rgds,
Dave R.