Recent content by Heffalump

Thanks, guys! It's interesting how one single invention can be applied to totally different subjects :cool:

Thanks JR. I'm glad that at least our first guess was correct, then. Don't know about the gas strut, but doesn't that have a sealed piston and different pressures on the two faces of the piston? I'm sure that it is used for totally different applications, at least.

That's a nice one - and perfectly correct, at that!

Hi friends I'm working in a community center repair workshop once a week. One of our customers brought us an automatic window opener used for a greenhouse, and we were not able to find out how this contraption really works - but it does work, by using solar energy only. It consists of a hollow...