Anti-parallelogram mechanism

This is only a suggestion (required to be verified in practice) for overcoming dead points of the anti-parallelogram mechanism.
Input: orange crank rotating clockwise.
The blue compression spring pushes the output pink crank at its two dead positions to create counter-clockwise torque.

Inventor files of this video:
https://www.mediafire.com/file/m52qwsg9av50476/AntiParallelogramMechanismInv.zip/file

Видео Anti-parallelogram mechanism канала thang010146