Patent · US Expired

Clamping mechanism for a dental tool

US5165896A · kind A · utility

7Cited by

5References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Johann Hain · Heppenheim, DE
Werner Schwarz · Reinach, CH

Key dates

Filing date	Mar 25, 1992
Grant date	Nov 24, 1992
Priority date	—
Expiry date	Mar 25, 2012

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61C1/141
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A clamping arrangement for clamping a cylindrical shaft of a tool in a dental handpiece includes a clamping sleeve having resilient tongues for gripping the cylindrical shaft and being capable of being moved radially outward by an adjustable plunger to release the shaft. In order to achieve a largely wear-free tool guidance, the tool shaft is held at least at its distal end of the tool in a guide bushing, which is firmly joined to the hollow shaft. The guide contains an arrangement which enables axial mobility of the plunger, prevents twisting of the plunger so as to enable transmission of the force between the plunger and a manipulator which actuates the plunger.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.