Dental handpiece

Details Dental handpiece Dental handpiece

1979-11-29

1981-09-01

Peshock, Robert

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433133, A61C 108, A61C 112, A61C 105

Patent

active

042869510

ABSTRACT:
In a dental handpiece, in particular a contra-angle, comprising a head and a handle coupled with a bayonet joint, an internal support for a tool-driving shaft fits freely in the head and has a rear portion fitting freely in the handle. In the vicinity of the coupling between the head and handle, the internal support has an enlargement providing a forwardly facing shoulder and a rearwardly facing shoulder. A groove at the base of the forwardly facing shoulder receives an O-ring. When the head and handle are coupled, the enlargement and O-ring are clamped between internal shoulders in the head and handle to position the internal support and restrain it from rotating.

REFERENCES:
patent: 2701147 (1955-02-01), Summerville
patent: 4211009 (1980-07-01), Leonard

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