Dental handpiece
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 14, 2001
Grant Date -
N/A
app pub date -
May 3, 2000
filing date -
May 5, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A dental handpiece has a head housing having a turbine chamber and an annular channel. First and second bearings are provided on opposite sides of the turbine chamber in the head housing. An air-driven turbine rotor is arranged in the turbine chamber and supported on the first and second bearings. A rotor spindle is driven by the air-driven turbine and drives, in turn, a tool. The first bearing is positioned proximal to the tool and the second bearing is positioned distal to the tool. The head housing has a drive air channel guiding drive air to the air-driven turbine rotor and a return channel for the drive air. A hollow space is provided in the head housing in which an actuator for the tool holder of the tool is arranged. Several air-permeable connecting channels connect a radially outer area of the turbine chamber to the hollow space or the annular channel or both.
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Family
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