From my window at work I can see this beautiful church tower. I bet there are tension springs somewhere in there since the springs are commonly used in door locks.
For the past few weeks there’s been a lot of burglaries in my neighborhood. I hate to feel insecure in my own home. We have an alarm system connected to a security company but still. Sometimes I wish we could garantee safety like bank vaults. A locking device with high quality tension springs of course :).
Tension springs and wind energy. I read an article about new development of turbines used in airplanes. Using tension springs and other components the new functionality should contribute to higher turbine reliability as well as reduced installation and maintenance costs. That sound great for an environmental point of view. And of course the airplane company ;).