Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1995-01-04
1996-10-29
Lucchesi, Nicholas D.
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
A61C 102, A61C 108, A61C 118
Patent
active
055690343
ABSTRACT:
A dental handpiece having a slow speed, high torque rotary output, comprises a housing member; an input shaft rotatably mounted in the housing member; a coupling member at an end portion of the input shaft for being coupled to a rotary dental drive unit; a plurality of planetary gear stages sequentially arranged within the housing member, a first of the planetary gear stages being coupled so as to be rotationally driven by the input shaft; subsequent planetary gear stages being sequentially coupled to each other such that an output of one planetary gear stage drives an input of a next subsequent planetary gear stage; and an output shaft coupled to a final output planetary gear stage of the plurality of sequentially arranged planetary gear stages. The output shaft provides a slow speed, high torque rotary output responsive to the input shaft being driven by a higher speed rotary dental drive unit.
REFERENCES:
patent: 3349490 (1967-10-01), Lieb et al.
patent: 4040311 (1977-08-01), Page, Jr. et al.
patent: 4433957 (1984-02-01), Nakanishi
patent: 5281138 (1994-01-01), Rosenstatter
Feldman Michael
Meller Moshe
Lucchesi Nicholas D.
MTI Precision Products, Inc.
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