Mechanism for suppressing bound of swingable elements on a key musical instrument

摘要

In construction of a key musical instrument such as a piano, a swingable element such as a hammer is accompanied with a pneumatic damper having an air vent so that, when impulsive load is applied by motion of the swingable element, fluid viscous resistance caused by flow of air in the pneumatic damper well absorbs shock, thereby greatly suppressing undesirable bound of said swingable element on return to its initial rest position.