Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1983-02-18
1984-12-11
Wilson, John J.
Dentistry
Apparatus
Having intra-oral dispensing means
51436, 51438, 55523, 137550, 251 5, A61C 302
Patent
active
044875827
ABSTRACT:
Soluble abrasive cleaning powder fed from a fluid-tight chamber and entrained in a stream of air is directed against a tooth surface to be cleaned from a manually controlled handpiece. The handpiece includes an improved air supply and control system having a first conduit for supplying air under pressure to the handpiece, a second conduit connected to the first for supplying air under pressure into the bottom portion of the fluid-tight chamber for entraining cleaning powder to be discharged through an outlet opening in the fluid-tight chamber and a third conduit connected to the first and to the fluid-tight chamber for directing a flow of air into the chamber at a point above the level of the cleaning powder in the chamber. A flow restricter and air filter are connected in the third conduit with the air filter being located in the fluid-tight chamber for filtering air flowing into and out of the system through the third conduit.
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Boland Thomas R.
Cooper LaserSonics, Inc.
Wilson John J.
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