AT140414B - Clamping device for drills and similar tools in dental instruments, especially in angle pieces. - Google Patents

Clamping device for drills and similar tools in dental instruments, especially in angle pieces.

Info

Publication number
AT140414B
AT140414B AT140414DA AT140414B AT 140414 B AT140414 B AT 140414B AT 140414D A AT140414D A AT 140414DA AT 140414 B AT140414 B AT 140414B
Authority
AT
Austria
Prior art keywords
drills
clamping device
dental instruments
angle pieces
similar tools
Prior art date
Application number
Other languages
German (de)
Original Assignee
Degussa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Degussa filed Critical Degussa
Application granted granted Critical
Publication of AT140414B publication Critical patent/AT140414B/en

Links

Landscapes

  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

  

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   Statt einer Ringnut   können auch der Anzahl   der zur Verwendung gelangenden Kugeln entsprechende Vertiefungen im Bohrer vorgesehen sein, in welche die   Kugeln-   einspringen. Diese Art der Bohrerhalterung hat den grossen Vorteil, dass der Bohrer selbst nach langer Gebrauchszeit keinerlei axiales Spiel besitzt und dass auch kleine Abweichungen in Breite und Tiefe der bei diesen Bohrern   üblicherweise   vorgesehenen Ringnut 16 die Festigkeit der Einspannung nicht beeinträchtigen, weil die Kugel   1.) derartige     Ungleiehmässigkeiten   durch mehr oder weniger tiefes Eindringen in die Ausnehmung 12 stets ausgleichen wird. 
 EMI2.1 
 liegenden   Kniestück   eines Kontrawinkelstiickes. 



   PATENT-ANSPRÜCHE : 
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   Instead of an annular groove, depressions corresponding to the number of balls used can also be provided in the drill, into which the balls jump. This type of drill holder has the great advantage that the drill has no axial play even after a long period of use and that even small deviations in the width and depth of the annular groove 16 usually provided for these drills do not affect the strength of the clamping, because the ball 1.) Such inequalities will always be compensated for by more or less deep penetration into the recess 12.
 EMI2.1
 lying knee of a contra-angle.



   PATENT CLAIMS:
 EMI2.2

Claims (1)

EMI2.3 EMI2.3
AT140414D 1933-06-01 1934-01-29 Clamping device for drills and similar tools in dental instruments, especially in angle pieces. AT140414B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE140414X 1933-06-01

Publications (1)

Publication Number Publication Date
AT140414B true AT140414B (en) 1935-01-25

Family

ID=5668208

Family Applications (1)

Application Number Title Priority Date Filing Date
AT140414D AT140414B (en) 1933-06-01 1934-01-29 Clamping device for drills and similar tools in dental instruments, especially in angle pieces.

Country Status (1)

Country Link
AT (1) AT140414B (en)

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