A 360deg rotating contact? We have one on our electric kettle base (Moulinex). It not only rotates, but the contacts are disengaged with every use. 2 kw element; no sign of problems after 5 years, and you know how many tea brew-ups us Brits make every day! Anyway, standard plug-pins are a sliding contact.....
Brilliant idea.
Alan


Wood work but can't!