Follow
Wind-up fan using and manual hand crank mechanism...
Made in Switzerland in the 1910s. The spring-loaded motor provides a breeze for 30 minutes.
They would never allow something this good because
- as a manually 'charged' product and pre-load technology
and because
- disposable energy sells better and sometimes needs less brain to operate than manually doing things :)
Obviously not for all application but imagine running on a treadmill and then having more-free power... I just thinks these sort of idea they wouldn't ever allow to compete with fuel.
invidious.tiekoetter.com/watch?v=ONj9cvHCado
or
