Abstract: Examples provide a height adjustable tray including a service surface for moving one or more items from a first height near the top of a display case down to a lower height within reach of a user in a seated position or otherwise unable to reach a top surface of the display case. The tray is connected to a set of one or more support arms. A gearing mechanism moves the set of support arms along a range of motion to lower the tray from the first height near the top of the display case to a position in front of the display case at a second height. The tray remains in a horizontal orientation substantially parallel to the floor or ground surface as the tray moves through the range of motion. An operating mechanism controls movement of the tray along the range of motion.

Abstract: Examples provide a height adjustable tray including a service surface for moving one or more items from a first height near the top of a display case down to a lower height within reach of a user in a seated position or otherwise unable to reach a top surface of the display case. The tray is connected to a set of one or more support arms. A gearing mechanism moves the set of support arms along a range of motion to lower the tray from the first height near the top of the display case to a position in front of the display case at a second height. The tray remains in a horizontal orientation substantially parallel to the floor or ground surface as the tray moves through the range of motion. An operating mechanism controls movement of the tray along the range of motion.