Patent ID: 8499907

Claim:
A dual frequency vibration absorber comprising: a housing; a first piston resiliently disposed within the housing, the first piston being adapted for connection to a first body; a first fluid chamber and a second fluid chamber, each being defined by the housing, and the first piston; a first tuning port in continually unobstructed fluid communication with both the first fluid chamber and the second fluid chamber, the first tuning port is fixed to the housing; a second tuning port in fluid communication with both the first fluid chamber and the second fluid chamber, the second tuning port in continuous parallel operation with the first tuning port; and a tuning fluid disposed within the first fluid chamber, the second fluid chamber, the first tuning port, and the second tuning port; wherein the first tuning port allows isolation of harmonic vibration at a first selected frequency, the isolation of harmonic vibration at the first selected frequency being a result of displacement of the tuning fluid in the first tuning port, the displacement being a result of movement of the piston; wherein the second tuning port allows isolation of vibration at a second selected frequency, the isolation of vibration at the second selected frequency being a result of displacement of the tuning fluid in the second tuning port, the displacement being a result of a movement of the piston; wherein the movement of the piston displaces the tuning fluid in both the first tuning port and the second tuning port.