Vertical conveyor 4

Pink lifter is pivoted on a link of the chain and always kept horizontal thanks to the interaction between its 4 pins (or rollers) at back side and 6 slots of the white guide.
Several lifters can be arranged along the chain length.
This animation aims to explain the working principle of vertical conveyor shown at:
• Vertical Lift Conveyor
For simplicity the measure to keep the lifters steadily during motion is not shown.
STEP files of this video:
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Inventor files:
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