公开(公告)号：US20180132971A1

公开(公告)日：2018-05-17

申请号：US15566226

申请日：2016-04-18

Applicant: DENTSPLY SIRONA inc.

Inventor： Metin ERTUGRUL ,  Siegfried GOISSER ,  Stefan GOBEL

IPC: A61C1/14 ,  A61B17/16 ,  B23B31/117 ,  B23B31/20

Abstract: The invention relates to a clamping device (1) for clamping a cylindrical instrument shank, in particular, a dental instrument, said clamping device comprising a spring-loaded element (2) for holding the instrument shank, a hollow shaft (3) for transmitting a rotational movement, and a plunger, wherein the spring-loaded element (2) is designed as a sleeve with a cylindrical wall, a first opening (6) and a second opening (7); and the wall has cut-outs (8). The spring-loaded element (2), the shaft (3) and the plunger (4) have axes of rotation that are arranged coaxially; the shaft (3) protrudes at least partially into the first opening (6) of the spring-loaded element (2); and the plunger (4) protrudes at least partially into the second opening (7) of the spring-loaded element (2).

公开(公告)号：US20190029774A1

公开(公告)日：2019-01-31

申请号：US16031204

申请日：2018-07-10

Applicant: DENTSPLY SIRONA inc.

Inventor： Metin ERTUGRUL ,  Stefan GOBEL

IPC: A61C1/12 ,  A61C1/18

Abstract: Dental hand piece, comprising a housing and a drive train with a coupling element for a drive, wherein the housing radially surrounds the drive train and wherein the housing has a first and a second housing end, and wherein the housing is held on the drive train on the first and on the second housing end. Between the first housing end and the coupling element is arranged a decoupling element, which is strictly springy or springy and damping in the axial direction, whereas the second housing end is braced rigidly against the drive train and the housing is braced with respect to the coupling element in the axial direction by means of the decoupling element.