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Machine translation
1. (WO1981001364) DENTAL TURBINE AND HAND PIECES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001364    International Application No.:    PCT/CH1980/000139
Publication Date: 28.05.1981 International Filing Date: 14.11.1980
IPC:
A61C 1/05 (2006.01)
Applicants:
Inventors:
Priority Data:
10240/79 16.11.1979 CH
Title (EN) DENTAL TURBINE AND HAND PIECES
(FR) TURBINE ET PIECES A MAIN DENTAIRES
Abstract: front page image
(EN)When a dental turbine or hand-piece stops operating, the suction control upstream of the tool draws back the water of the spray up to the supply conduit. Now, most often, this water is contaminated and will contaminate said supply conduit. A sterilized turbine or hand-piece coupled to said conduit will be in turn contaminated. This disadvantage may be avoided by providing the water conduit (1) or spray of the turbine or hand-piece with an anti-return or check device comprising a ball (3) mounted on a closure spring (4).
(FR)Lorsqu"une turbine ou une piece a main dentaire cesse de fonctionner, la commande d"aspiration se trouvant en amont de l"instrument rappelle l"eau du spray jusque dans le conduit d"alimentation. Or, le plus souvent, cette eau est contaminee et contaminera ledit conduit d"alimentation. Une turbine ou piece a amin sterilisee accouplee a ce conduit sera a son tour contaminee. Pour pallier a cet inconvenient, il suffit de munir le conduit (1) d"eau ou de spray de la turbine ou de la piece a main d"un dispositif anti-retour pouvant consister dans une bille (3) montee sur un ressort de fermeture (4).
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)