Patent ID: 8622471

Claim:
A vibration seat comprising a seat body, a sitting portion supported by the seat body, and a vibrator for replicating sounds as vibrations, wherein the sitting portion is free to vibrate relative to the seat body, wherein the vibrator is connected to the sitting portion at a single node and is free to move relative to the seat body, and wherein the sitting portion is a laminated structure, the laminated structure comprising an actuator plate layer and a foam layer above the actuator plate layer, a spreader plate layer below the actuator plate layer, and a further spreader plate layer between the actuator plate layer and the foam layer, wherein the spreader plate layer is present at the single node and only over a portion of less than 50% of the area of the laminated structure, and wherein the further spreader plate layer is present at the single node and only over a portion of less than 50% of the area of the laminated structure.