Patent ID: 6120291
Filing Date: 2000-09-19
Classification: A61C

Abstract:
Turbine handpiece having a drive shaft rotatably mounted in a forward end region of the handpiece, with which a tool can be connected by means of a mounting device, a turbine wheel in a turbine chamber disposed on the drive shaft and fixed for rotation therewith, a delivery line for a flowing pressure medium opening in said turbine chamber at an inlet opening therein and a discharge line extending from said turbine chamber at an outlet opening thereof, means for preventing release of the pressure medium rotating in the turbine chamber through the discharge line after switching off of a supply of the pressure medium during rotation of the turbine wheel, wherein the means for preventing release is disposed in the region of the turbine chamber such that in functional operation said means for preventing release of the pressure medium deflects the pressure medium rotating in the turbine chamber past the outlet opening.