Dental turbine spindle assembly

Details Dental turbine spindle assembly Dental turbine spindle assembly

1995-03-13

1996-11-19

O'Connor, Cary E.

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433132, A61C 114

Patent

active

055756484

ABSTRACT:
A high speed dental handpiece turbine spindle assembly in which a generally cylindrical spindle is rotatably mounted within a housing for actuation by a supply of pressurized air acting upon turbine blades associated with the spindle. The spindle includes a longitudinal bore which accommodates a drill bit or bur, with one end of the spindle being tapered and threaded to fit a matching chuck nut. The spindle and chuck nut have interfering geometry so that the chuck nut cannot be inadvertently removed while changing drill bits, and so that the chuck nut cannot be inadvertently tightened so far that the spindle is permanently deformed.

REFERENCES:
patent: 4198754 (1980-04-01), Lares et al.
patent: 4318695 (1982-03-01), Lieb et al.

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