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公开(公告)号：US20180355914A1
公开(公告)日：2018-12-13
申请号：US16002037
申请日：2018-06-07
Applicant: DENTSPLY SIRONA inc.
Inventor： Metin ERTUGRUL , Matthias Rein , Jan-Paul Gerlach , Ralph Sutter
Abstract: A dental hand piece or angle piece including a rotating tool, which is driven via a rotating drive element disposed in a housing, wherein the rotating drive element is mounted in the housing by a radial rolling bearing, wherein the rolling bearing comprises an axial abutment surface and the housing comprises an axial countersurface, and wherein the rolling bearing is axially preloaded with respect to the housing by a spring element 11 and has a coefficient of friction for the static friction of the abutment surface to the countersurface or the abutment surface and the countersurface to the spring element that is at least 0.16 in the lubricated state and at least 0.25 in the unlubricated state.
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公开(公告)号：US11051907B2
公开(公告)日：2021-07-06
申请号：US14963863
申请日：2015-12-09
Applicant: DENTSPLY SIRONA Inc.
Inventor： Matthias Rein , Metin Ertugrul , Ralf Sutter
IPC: A61B1/00 , A61C1/05 , A61C1/00 , A61C1/08 , A61C17/02 , A61C17/022 , A61C17/028 , A61G15/14
Abstract: The invention relates to an adapter for connecting a dental instrument to be operated with compressed gas to a compressor supplying the compressed gas, and to a control unit as well as a treatment unit comprising the adapter, wherein the adapter has at least one first input for the compressed gas of a compressor, a second input for a control signal, an output for connecting to the dental instrument, and a valve between the first input and output that is controllable by the control signal.
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公开(公告)号：US11448260B2
公开(公告)日：2022-09-20
申请号：US16002037
申请日：2018-06-07
Applicant: DENTSPLY SIRONA inc.
Inventor： Metin Ertugrul , Matthias Rein , Jan-Paul Schermuly , Ralf Sutter
Abstract: A dental hand piece or angle piece including a rotating tool, which is driven via a rotating drive element disposed in a housing, wherein the rotating drive element is mounted in the housing by a radial rolling bearing, wherein the rolling bearing comprises an axial abutment surface and the housing comprises an axial countersurface, and wherein the rolling bearing is axially preloaded with respect to the housing by a spring element 11 and has a coefficient of friction for the static friction of the abutment surface to the countersurface or the abutment surface and the countersurface to the spring element that is at least 0.16 in the lubricated state and at least 0.25 in the unlubricated state.
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公开(公告)号：US10736713B2
公开(公告)日：2020-08-11
申请号：US16016056
申请日：2018-06-22
Applicant: DENTSPLY SIRONA Inc.
Inventor： Thomas Bierbaum , Matthias Rein , Ralf Sutter , Siegfried Goisser
IPC: A61C1/18 , F16C33/58 , F16C33/76 , F16C25/08 , F16C33/78 , F16C37/00 , F16C35/04 , F16C19/06 , F16C19/54 , A61C1/08 , A61C1/00 , A61C1/05
Abstract: A dental handpiece (1) having a drive (3) of a tool (4), which drive is located in a head housing (2), has at least one media-conducting line arranged in the head housing, which media-conducting line has an outlet opening to the tool, and a tool receptacle (16) arranged in a drive chamber, which tool receptacle is rotatably supported by means of a rolling bearing (11) in a support (14) of the head housing (2) on a side of the drive chamber facing the tool. The rolling bearing has an outer race (13), which is supported against the head housing (2) radially in the support (14) in the area of a raceway (22) and which has a sub-area (21), the outside diameter D2 of which is reduced compared to the outside diameter D1 in the area of the raceway (22). The head housing has a housing projection (23), which extends into the area of the reduced outside diameter D2, and the media-conducting line (17) runs at least partially through said housing projection (23).
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