09554870 cites 11 patents.

A dentists' preparation instrument (1) comprises a turbine (4) for driving a tool (3) using compressed air, and a rotor (6) that is arranged in a turbine compartment (5), rotates about a longitudinal axis (7), and has blades (11) extending to a face (13) of the rotor (6). The turbine compartment (5) has a discharge port (12) for the compressed air towards a returning air duct (8). Said discharge port (12) is disposed in such a way that both the face (13) of the rotor (6) and parts of the blades (11) sweep past the discharge port (12) as the rotor rotates about the longitudinal axis (7). For deceleration purposes, the rotor (6) has a deceleration contour (9) on the face (13), said deceleration contour being formed by projections (14), and the turbine compartment (5) has a deceleration contour chamber (15) inside which the deceleration contour (9) is accommodated. The discharge port (12) in part also extends across the deceleration contour chamber (15).

Title
Dentists preparation instrument
Application Number
14/415511
Publication Number
9554870 (B2)
Application Date
July 17, 2013
Publication Date
January 31, 2017
Inventor
Alexander Muhlbeyer
Neu Ulm
DE
Ralf Sutter
Weinheim
DE
Metin Ertugrul
Rodermark
DE
Siegfried Goisser
Einhausen
DE
Matthias Rein
Lorsch
DE
Agent
Fitzpatrick Cella Harper & Scinto
Assignee
SIRONA DENTAL SYSTEMS
DE
IPC
A61C 1/05
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