That's just a trivial parent-child transformation copy, and it's one of the oldest tools in 3D digital representation. You would be hard-pressed to find a game engine or even modeling software without this feature. Hell, I'm sure if you looked through a few geometry or physics books, you could pretty easily find any instance of this that predates computing.

We aren't even talking about something interesting like inverse kinematics!

This patent boils down to nothing more than math, and should have been invalidated as soon as it was read. The fact that it wasn't speaks volumes on the failure of our patent system.