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:
Nov. 19, 2024
Filed:
Mar. 30, 2020
Bien-air Holding SA, Biel/Bienne, CH;
Fabio Bernasconi, Péry, CH;
Davide Sarchi, Zürich, CH;
Sébastien Juillerat, Moutier, CH;
Gaël Guerlesquin, Fontainemelon, CH;
BIEN-AIR HOLDING SA C/O BIEN-AIR DENTAL SA, Biel/Bienne, CH;
Abstract
The present invention relates to a chucking device for a drilling tool for a dental handpiece, as well as a handpiece for dental or surgical applications comprising:—a head () in which is inserted in removable fashion a drilling tool () able to be actuated in rotation about an axis of rotation (R) by means of a drive mechanism comprising a drive shaft () rotating about this axis of rotation (R)—a clamping device for the drilling tool (), comprising a chucking clamp () disposed inside said drive shaft () for axial retention of the drilling tool () with respect to the axis of rotation (R), the clamp () co-operating with a plunger (), and—a push-button () arranged to act upon the plunger () in order to release the drilling tool (); The handpiece () contains a permanent magnet () arranged symmetrically around the axis of rotation (R) and exerting a force of magnetic attraction (F) on the plunger () in direction of the push-button ().