Assisted tightening device for handpiece

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12144692
APP PUB NO 20220168067A1
SERIAL NO

17436712

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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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 (10) in which is inserted in removable fashion a drilling tool (100) able to be actuated in rotation about an axis of rotation (R) by means of a drive mechanism comprising a drive shaft (2) rotating about this axis of rotation (R)—a clamping device for the drilling tool (100), comprising a chucking clamp (4) disposed inside said drive shaft (2) for axial retention of the drilling tool (100) with respect to the axis of rotation (R), the clamp (4) co-operating with a plunger (5), and—a push-button (61) arranged to act upon the plunger (5) in order to release the drilling tool (100); The handpiece (1) contains a permanent magnet (7) arranged symmetrically around the axis of rotation (R) and exerting a force of magnetic attraction (F) on the plunger (5) in direction of the push-button (61).

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Patent Owner(s)

Patent OwnerAddress
BIEN-AIR HOLDING SA C/O BIEN-AIR DENTAL SALANGGASSE 60 BIEL/BIENNE 2504

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bernasconi, Fabio Péry, CH 1 1
Guerlesquin, Gaël Fontainemelon, CH 2 3
Juillerat, Sébastien Moutier, CH 3 3
Sarchi, Davide Zürich, CH 82 548

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