Patent ID: 9554870
Date: 2017-01-31
CPC Classifications: A61C

Claim:
1. A dental apparatus, comprising: a turbine compartment that includes a discharge port; a turbine constructed to drive a tool by compressed air, wherein the turbine includes a rotor located within the turbine compartment that is constructed to rotate about a longitudinal axis of the rotor, wherein the turbine includes: an eddy chamber connected to the discharge port and a return air duct, wherein the eddy chamber is constructed to create turbulence in exhaust air from the turbine compartment, wherein the disruptive contour includes an intermediate space between the projections that is open radially toward the discharge port, and wherein the discharge port, the face of the rotor, and the plurality of blades are arranged such that both the face of the rotor and parts of the plurality of blades pass by the discharge port during a rotation about the longitudinal axis.