A bezel and bezel assembly in which the bezel is a rigid block with a plurality of cavities. A depression in the block has ribs extending up therefrom to form an elevated contour. The depression includes at least one cavity therein for the application of air pressure into the depression and over the...http://www.google.es/patents/US7632080?utm_source=gb-gplus-sharePatente US7632080 - Bezel assembly for pneumatic control
