Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1983-03-23
1984-11-13
Wilson, John J.
Dentistry
Apparatus
Having intra-oral dispensing means
51436, 51438, A61C 302
Patent
active
044823223
ABSTRACT:
A device for surface treatment of teeth characterized by a vortex chamber divided by a diaphragm into an upper and lower portion, a reservoir discharging through an orifice which is positioned in the first portion to be closed by the diaphragm while in a first position, a pressurized gas line discharging into the first portion and extending from the first portion to a nozzle of the device so that an abradant discharged through the orifice into the first portion is mixed with the gas for discharge from the nozzle of the hand piece. The second portion of the vortex chamber includes a spring biasing the diaphragm toward the first position and a control line which receives pressurized gas from a branching line and has a regulating valve for venting the gas pressure in the second chamber to enable the diaphragm to move to the second position to enable flow of the abradant into the first portion. The device also includes a vibrating arrangement for vibrating the reservoir and the reservoir is pressurized by a pressure compensation line extending from the discharge side of the gas line to the reservoir.
REFERENCES:
patent: 2696049 (1954-12-01), Black
patent: 2814877 (1957-12-01), Tilden
patent: 3141264 (1964-07-01), Moore
patent: 3199844 (1965-08-01), Moore et al.
patent: 3631631 (1972-01-01), Greenstein
patent: 3798841 (1974-03-01), Eppler
patent: 4067150 (1978-01-01), Merrigan
patent: 4075789 (1978-02-01), Dremann
patent: 4174571 (1979-11-01), Gallant
Hain Josef
Landgraf Hermann
Siemens Aktiengesellschaft
Wilson John J.
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