Patent ID: 7801576

Claim:
A radiotelephone, comprising: a first housing portion; a display screen located on the first housing portion; a second housing portion movably connected to the first housing portion via a hinge, wherein the first and second housing portions are movable relative to one another between a closed position and an open position; a driving sprocket and idler sprocket disposed within the first housing portion in spaced apart relationship, wherein the driving sprocket is directly connected to the hinge and rotates in response to movement of the first and second housing portions between open and closed positions; an endless drive belt trained around the driving sprocket and idler sprocket, wherein the endless belt moves along a first direction in response to movement of the first and second housing portions from the closed position to the open position, and along an opposite second direction in response to movement of the first and second housing portions from the open position to the closed position; and an elongated cleaning member attached to and driven by the endless belt, wherein the cleaning member is configured to wipe the display screen in response to movement of the first and second housing portions between open and closed positions.