Patent ID: 6781046
Filing Date: 2004-08-24
Classification: G10C,G10F,G10G,G10H

Abstract:
A key actuation system for a keyboard instrument of the type having a plurality of keys, each key having an upper surface and a lower surface and being pivotally supported above a key bed, each key further having a front end that is depressed by a player to play a note, the key bed extending under and spaced from the lower surface of the key, the actuation system comprising:an underlever disposed in the space between the lower surface of the key and the key bed and between the front end of the key and the pivotal support, the underlever having a first end that is supported in a stationary position relative to the key bed, a second end that is movable towards and away from the key bed, and a midportion therebetween, the second end of the underlever being in mechanical communication with the key such that movement of the second end of the underlever towards the key bed causes the key to move as if depressed by a player; an actuator in mechanical communication with the underlever and operable to move the second end of the underlever towards the key bed.