This video says it all – it’s a beer dispenser that fills its cups from the bottom rather than from the top. The advantage is that the bartender can fill far more cups per minute with this machine than would ever be possible with a fill-from-the-top tap:
How is this possible? How can there be a hole in the bottom of the cup to allow filling, but it doesn’t leak? How can such a seal be cheap enough to put one in every cup? What is the secret? It is another one of those “why didn’t I think of that” moments:
You see the secret very quickly starting at the 0:11 point in the video above. That little disk is a FDA-approved, food grade refrigerator magnet. As seen on this page, the magnets can be printed with advertising and the consumer sees the magnet as a value-add. It’s also a great way to get an ad impression – the consumer sees the ad every time s/he takes a drink.
How fast can an efficient bartender fill cups? Nearly one cup per second:
[[[Jump to previous invention - The Motorola Atrix phone is powerful enough to be the core of a laptop]]]