Floor lock for table of casters

Step on the pink lever to lock (to prevent the caster wheels from contact with the floor).
Step on the yellow lever (at red portions) to unlock.
At lock and unlock positions the pink and yellow levers are not in line and the tension blue spring keeps the mechanism stable.
It is an application of the slider-crank mechanism: yellow crank, pink connecting rod. They are sequential driving links.
For more read:
https://www.alliedcaster.com/what-types-of-caster-locks-are-available/

STEP files of this video:
https://www.mediafire.com/file/msajewcwkxn38ee/FloorLockTableCastersSTEP.zip/file
Inventor files of this video:
https://www.mediafire.com/file/l7aytj5c45okll5/FloorLockTableCastersInv.zip/file

Видео Floor lock for table of casters канала thang010146