That would be called a hinge, maybe even a scissor hinge.  And pretty specialized at that.  Should be able to get the lid and all at a used parts dealer.  http://www.danamarineproducts.com/Hinges.htm  has some and search the internet for "scissor hinge" and several other web sites show up.

Zoltan <zolo@FOXINTERNET.NET> wrote:  I don't even know what the name of it is.
This is the thing that keeps the lid of the sink up and resides on the right side next to the faucet. That little thing that collapses and lets the lid down. Looks like it is chromed too. Riveted to the sink.
If you know what I'm talking about, would you also know if any vendor sells it?
Zoltan

---------------------------------
Do you Yahoo!?
 Get on board. You're invited to try the new Yahoo! Mail.