What the heck do you call those hands-free (foot operated) sinks? You know, the big circular ones with the faucet in the middle... you step on a rubber-padded button or a metal bar to operate it. A co worker is taking a design class and just asked what you'd call one, and where to find a pic. Google's not helping (though maybe my keywords aren't appropriate).

Thanks!

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1992 300D 2.5T
1980 Euro 300D (sadly, sold)
1998 Jetta TDI, 132K "Rudy"
1974 Triumph TR6
1999 Saab 9-5 wagon (wife's)