Patent ID: 6444885
Filing Date: 2002-09-03
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 elongated lever arm 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 lever arm having a first end in mechanical communication with the lower surface of the key such that movement of the first end of the lever arm in a first direction causes the key to move as if depressed by a player, the lever arm further having a supported portion that does not move in the first direction; and an actuator disposed in the space and in mechanical communication with the lever arm, the actuator operable to move the first end of the lever arm in the first direction.