Patent ID: 6683242
Filing Date: 2004-01-27
Classification: G10C,G10H

Abstract:
A composite keyboard musical instrument comprising:an acoustic piano including a keyboard having plural keys selectively moved by a player positioned in front of the keyboard, plural action units respectively connected to said keys so as to be selectively actuated by the keys moved by said player and having jacks rotatable about axes of rotation, respectively, and a primary regulating member for producing first escapes of said jacks when first portions of said jacks are brought into contact with said primary regulating member, plural beating members respectively driven for rotation by said plural action units when said first escapes or second escapes are produced, and plural vibratory members respectively struck with said plural beating members at the end of said rotation; and an auxiliary regulating button sub-mechanism including a secondary regulating member moved into the trajectories of said jacks and permitting second portions of said jacks closer to said axes of rotation than said first portions to be brought into contact therewith for said second escapes at certain timing not later than the contact between said first portions and said primary regulating member, and a change-over mechanism connected to said secondary regulating member so as to move said secondary regulating member into and out of said trajectories of said jacks.