The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2024
Filed:
Nov. 13, 2019
Dentsply Sirona Inc.;
Sirona Dental Systems Gmbh, Bensheim, DE;
Siegfried Goisser, Einhausen, DE;
Stefan Göbel, Langen, DE;
Dentsply Sirona Inc., York, PA (US);
Abstract
A dental turbine driven by pressurized air comprises a head housing () with a turbine chamber () and a rotor shaft () mounted using an anti-friction bearing () with a non-rotatably mounted turbine wheel (). The outer race () of the anti-friction bearing () extends into the turbine chamber () in axial direction. The turbine wheel () comprises an annular web () that is arranged concentrically to the outer race () of the anti-friction bearing () and, together with the outer race (), forms a gap seal (). This gap seal () extends in axial direction between outer race () and annular web () and prevents the sucking-in of liquids and dirt particles into the turbine chamber () during inertial rotation of the turbine wheel ().