How do I model a contact spring, that is helically wound in a circle

[RuJe]

Hello,

the attached picture is showing a spring, that I want to model in CREO.

I'm looking for a equation, that is describing the shape of the spring wire with a few parameters.

Thanks for your help,

RuJe 

[pausob]

This has been discussed at length before.  Search this community for "canted spring".