Thread: Interesting linear actuator

I found this unique actuator recently and thought I'd pass it along.

Kinda hard to describe, It's a spiral interlocking tube that has a very high ratio of collapsed to extended height.
Check it out:

Lifting technology | Strong column lifts | Lift designs

Vid:
Paco Spiralift presents I-Lock Spiralift

Chris

Now that us cool! I wonder how solid it is when raised?

These look like the same kind of actuators that are often used in stage designs for theaters that have floors that change elevation. I did some work at the KA Theater and they had more than 20 of these actuators that raised and lowered sections of floor around the main stage - they are very stiff and sturdy.