THE DOUBLE-PENDULUM PIANO ACTION
AY GOKHSHTEIN · 2023
Free inertia synchronization of action members instead ol lorced kinematicel one simpli es the construction.improves its reliability and makes the key more liberated for performance.The elements of inertia movement are need in the relative rotation of the members and their mutual rest during the free fall.The new type of the piano action has a number of versions with horizontal and vertical strings.