Patent ID: 7687692

Claim:
A hammer assembly for a grand piano that is pivotally moved with the depression of a piano key, comprising: a hammer; a hammer shank; and a shank butt, wherein said shank butt further comprises: a hammer shank hole ( 200 ), a knuckle slot ( 190 ), a set of two flange attachment holes ( 220 ), and a void area ( 230 ); wherein, said hammer shank is elongated having first and second ends where said first end is affixed to said shank butt by insertion inside said hammer shank hole and said second end is affixed in a usual way to said hammer of traditional type; and said flange attachment holes receive there through a hinge pin where said hinge pin is connected to a shank flange of a grand piano, to create a pivotal connection between said shank butt and the shank flange, and said hollow area is required as clearance for the pivotal action between said shank butt and the shank flange.