Cam Gear (experimental)

The trick is: the stable phase holds position with one and the next after the next pin, but while moving the middle pin wanders out whilst being hold in touch with the curve by the next pin until the next after the next pin starts touching the opposite wall again.

For this to work, the outer curve of the inner curve body needs too be moved 0.1mm outwards to free the pin on one side to enable pin rotation.

With help of Google translated:

This is a cam gear with "Acceleration optimally i