| 摘要 |
A clamping device for a dental tool consists of a tubular body whose bore has two coaxially cylindrical, terminal portions and a reduced, slightly eccentric, cylindrical, central portion. A clamping sleeve is conformingly rotatable in one of the terminal portions. Its slightly eccentric bore is of uniform cross section equal to that of the central portion of the body. The sleeve can be turned in the body between a position in which the bore of the sleeve and the central bore portion of the body member are aligned for insertion of a dental tool, and another position in which they clamp the tool. |
