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:
Oct. 28, 2014
Filed:
May. 07, 2010
Hannes Wagner, Salzburg, AT;
Gunter Teufelberger, Bürmoos, AT;
Josef Spitzauer, Oberndorf, AT;
W&H Dentalwerk Bürmoos GmbH, Bürmoos, AT;
Abstract
A medical or dental handpiece includes a tool holding/releasing device with a hollow shaft, a first holding unit and a second holding unit. The hollow shaft can be put into a drive motion for holding a treatment tool. The hollow shaft extends along a central axis and has a tool receptacle opening. The second holding unit is separate from the first holding unit and axially offset from the first holding unit relative to the central axis. Both holding units are designed to axially secure a treatment tool held in the hollow shaft and to transmit a torque to the treatment tool. Both holding units have at least one shaped element each and a bore penetrating the outer wall of the hollow shaft. The shaped element can be held in such a way that it projects through the bore into the interior of the hollow shaft. A locking sleeve is operatively connected to the shaped elements and can move relative to the hollow shaft. The locking sleeve surrounds the hollow shaft and an operating element operatively connected to the locking sleeve for the movement or sliding of the locking sleeve.