This is used in eject assembly in the pinball playfield. This version has an extra strong solid ramp
I do not have access to an original, so it is possible that some dimensions are not exactly the same as the original, but it must be close.
If you are interested in pinball and 3d printed parts, have a look on my new blog:http://3dwingmaster.blogspot.com/ describing my quest for a pinball using most parts made with a 3d printer.
This design can also be found on http://www.thingiverse.com/thing:738085