Integral bur tube and bearing assembly

Details Integral bur tube and bearing assembly Integral bur tube and bearing assembly

1994-03-31

1996-11-05

O'Connor, Cary E.

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433127, A61C 105

Patent

active

055710131

ABSTRACT:
A dental handpiece includes a head, a tubular chuck having an open-end axial bore for receiving the shank of a dental bur and a tubular bur tube having an outer surface and an axial bore therethrough for receiving the chuck therein. The bur tube has at least one inner raceway formed integrally along its outer surface. An outer race having an outer raceway is associated with the inner raceway. A plurality of ball bearings are mounted between the raceways. A rotor may be formed integrally with the outer surface of the bur tube.

REFERENCES:
patent: 3218109 (1965-11-01), Sato
patent: 3376084 (1968-04-01), McKee
patent: 4941828 (1990-07-01), Kimura
patent: 5040980 (1991-08-01), Heil

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