Quiet dental drill

Details Quiet dental drill Quiet dental drill

1984-12-24

1986-02-04

Peshock, Robert

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433133, A61C 105, A61C 112

Patent

active

045686424

ABSTRACT:
A dental handpiece having a low noise level consisting of: an elongated main housing having a head portion at the forward end thereof; a drive shaft located within the main housing and supported by fore and aft bearings mounted within the main housing; a rotor/burr holder located within the head portion of the main housing and supported by bearings mounted within the head portion, the rotor/burr holder being adapted to receive a burr drill or the like; an air-driven axial flow turbine wheel located and supported within the rear portion of the main housing, the turbine wheel being operably connected to the drive shaft; and, a coupling system for operably coupling the forward portion of the drive shaft to the rotor/burr holder. In one embodiment of the invention, the coupling system consists of a set of cylindrical driving magnets mounted on the forward portion of the drive shaft and a corresponding set of cylindrical driven magnets mounted on the rotor/burr holder.

REFERENCES:
patent: 1878747 (1932-09-01), Youngblood
patent: 3071861 (1963-01-01), Saffir
patent: 3192922 (1965-06-01), Winkler
patent: 3380162 (1968-04-01), Heathe
patent: 4153993 (1979-05-01), Kataoka et al.

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