Medical handpiece having a clamping sleeve for a tool

Details Medical handpiece having a clamping sleeve for a tool Medical handpiece having a clamping sleeve for a tool

2005-01-18

2008-08-26

Wilson, John J (Department: 3732)

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

C279S023100, C279S043100, C279S046100, C433S125000

Reexamination Certificate

active

07416411

ABSTRACT:
A medical handpiece having an elongate grip part, in the forward end region of which a clamping sleeve is rotatably mounted, in which sleeve a shaft of a tool can be inserted and clamped, wherein the clamping sleeve has at least one axial clamping slot and in its longitudinal region a constriction section with a reduced inner cross-section and in the longitudinal region is surrounded by a sleeve receiving space. In order to improve the tool clamping the outer form of the clamping sleeve is, in the region of the constriction section, so configured that through the insertion of the shaft it forms a barrel-like outward bulge and in that the sleeve receiving space is in cross-section the same size or larger than the barrel-like output bulge.

REFERENCES:
patent: 3321209 (1967-05-01), Sanders
patent: 3637050 (1972-01-01), Hoffmeister
patent: 3672060 (1972-06-01), Eibofner et al.
patent: 4281988 (1981-08-01), Eibofner
patent: 5496218 (1996-03-01), Brahler
patent: 29 23 358 (1980-12-01), None

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