Im looking for a tv mount that adjust vertically, that i can mount high and "pull" down?

they make so many that adjust horizontally and tilt to adjust vertically, but the place we are moving into has built in cabinets that are about 5.5-6 ft tall. i dont want to mount the tv on the cabinets, but i would like to mount it above and be able to "pull" it down when we are going to watch it and have it out of the way when we are not and it not affect the look that we have at our new place.