Screw 2-stage telescopic actuator 2

Input: yellow screw.
Green slider has the green nut that together with the input screw create the first screw-nut drive.
Pink slider of inner thread and the orange screw create the second screw-nut drive.
The revolution joint (two blue pins and the circular groove on the green nut) allows the orange screw to rotate together the input screw and move axially together with the green slider.
The first and second screw-nut drives have leads of L1 and L2 mm of the same hand.
If the input screw rotates N revolutions, the pink slider performs a displacement of N*(L1+L2) mm.
This mechanism may be used in
   • Three-stage linear actuator, more com...  

STEP files of this video:
https://www.mediafire.com/file/4dca1o...
Inventor files of this video:
https://www.mediafire.com/file/dsk0k5...