Semi-automatic umbrellas

Semi-automatic

— such a scheme of work implies the ability to open the umbrella automatically — you just need to release the dome (remove it from the case, unfasten the strap) and press the button, the mechanics will do the rest. But to close the umbrella, you will have to make additional movements. Semiautomatic devices are a kind of compromise between simple, reliable, but not very convenient mechanical umbrellas and easy-to-use, but expensive and complex automatic ones.