Bush

A bush for isolating vibrations, the bush comprising:

• a first anchor part defining a longitudinal axis;
• a second anchor part disposed coaxially with respect to the first anchor part;
• a first resilient body operably engaged with the first anchor part;
• a second resilient body operably engaged with the second anchor part;
• and
• an inertial mass element disposed between the first anchor part and the second anchor part,
• wherein the inertial mass element is independently connected to the first resilient body and the second resilient body,
• wherein the first resilient body, second resilient body and inertial mass element are arranged to isolate vibrations between the first anchor part and the second anchor part within a predetermined operational frequency range,
• wherein the inertial mass element is arranged to isolate the first anchor part and second anchor part from dynamic stiffness increases associated with eigenmodes of the first resilient body and the second resilient body in the predetermined operational frequency range, and
• wherein the first resilient body, second resilient body and inertial mass element together form a first frustoconical interconnection between the first anchor part and the second anchor part.