| 摘要 |
A vibratory device (10), such as a dental scaler, in which an air-driven rotor (60) is driven about a shaft (42) to impart vibrations thereto and drive a work tool (24) or other object attached to the shaft (42). A support (30) is provided along the shaft (42) at a desired vibratory node and has sufficient non-resilience to bias the shaft (42) into the desired mode of vibration. A water seal assembly (110) used in conjunction with the water transport means (106) is supported on the distal end of the shaft (42) at a location substantially the same as that of the support (30). |
