Originally Posted by Fluxmaven
Well the one you linked supports 12-20lbs... No way your 55" TV is that light. But the first result of searching for "drop down wall mount" lead me to this https://www.mantelmount.com/
which looks like it might work for your use case.
That’s a nice mount, wish I found that before I got mine. Though I just love how easy they make pulling the tv out, won’t ever be that easy in RL