| 摘要 |
Two vibrators are mounted on opposite sides of a chair frame below the seat so that the path lengths of the waves traveling through the chair from the vibrators are equal in both directions in a closed path. There are two controls for the vibrator motors, one control regulating the amount of massaging action by controlling the speed of both the vibrators, while the other control regulates the speed and direction of massaging action by controlling the differential speed between the two vibrator motors. |
