US Patent 8038540 Tuned mass damper for rotating shafts

The apparatus relates to a vibration absorber for mounting onto the outer circumference of a rotating shaft or axis having an inner part (3) of substantially resilient material for abutting against the outer circumference of the shaft or axis, and an outer part (2, 2′), which comprises at least two segments (2, 2a, 2b), that grips around the inner part and abuts it vibratingly, and serves as an inertial mass member. The segments (2, 2a, 2b) are configured at their two ends in the circumferential direction with connecting members (5a, 5b, 5a′, 5b′, 6a, 6b, 6a′, 6b′) formed integrally therewith for establishing a mutual latching connection.