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US 6,425,761 B1Granted
Drive system for dental handpiece
AssigneeKaltenbach & Voigt GmbH & Co.
InventorEugen Eibofner
Life of this patent
Estimating the term…
Abstract
A drive system for dental handpieces, having a rotor (12) secured to a motor shaft (11), an anti-friction bearing system (13, 14), including an inner bearing race (17), an outer bearing race (18) and a plurality of rolling elements (19) arranged between the bearing races, and a coupling element (16) for coupling thereto a dental instrument (1) that is to be driven, the rolling elements consisting of a non-electroconductive material.
Claims16
An electric motor drive system for a medical or dental handpiece, said electric motor drive system comprising:
- a motor housing;
- a stator winding located in said motor housing;
- a rotor which is secured to a motor shaft;
- at least one anti-friction bearing system mounting the motor shaft in said motor housing, said bearing system including:
- an inner bearing race;
- an outer bearing race;
- and
- a plurality of rolling elements arranged between the bearing races;
- and
- a coupling element for coupling a dental instrument to be driven to said motor housing,
- said coupling element containing a coupling pin that is connected to the motor shaft and which is engagable with a drive pin of said dental instrument,
- said rolling elements each consisting of a non-electroconductive material.
9 more elements
A dental handpiece comprising:
- an instrument portion constructed to receive and mount a drill for rotation thereof;
- a hose portion connected to said instrument portion for supplying at least electric current to a drill mounted thereon;
- and
- an electric motor drive system comprising:
- a motor housing;
- a stator winding located in said motor housing;
- a rotor which is secured to a motor shaft;
- at least one anti-friction bearing system mounting the motor shaft in said motor housing, said bearing system including:
- an inner bearing race;
- an outer bearing race;
- and
- a plurality of rolling elements arranged between the bearing races;
- and
- a coupling element for coupling a dental instrument to be driven to said motor housing,
- said coupling element containing a coupling pin that is connected to the motor shaft and which is engagable with a drive pin of said dental instrument,
- said rolling elements each consisting of a non-electroconductive material.
13 more elements
An air motor drive system for a dental handpiece, said air motor drive system comprising:
- a motor housing;
- a rotor which is located in the motor housing and secured to a motor shaft;
- at least one anti-friction bearing system mounting the motor shaft in said motor housing, said bearing system including:
- an inner bearing race;
- an outer bearing race;
- and
- a plurality of rolling elements arranged between the bearing races;
- and
- a coupling element connected to said motor housing for coupling a dental instrument to be driven to said housing,
- said rolling elements each consisting of a non-electroconductive material;
- and
- said rolling elements each consisting of a non-electroconductive material;
- and
- a coupling element for coupling a dental instrument to be driven to said motor housing,
- said coupling element containing a coupling pin that is connected to the motor shaft and which is engagable with a drive pin of said dental instrument.
12 more elements
A dental handpiece comprising:
- an instrument portion constructed to receive and mount a drill for rotation thereof;
- a hose portion connected to said instrument portion for supplying at least pressurized air to a drill mounted thereon;
- and
- an air motor drive system comprising:
- a motor housing;
- a rotor which is located in the motor housing and secured to a motor shaft;
- at least one anti-friction bearing system mounting the motor shaft in said motor housing, said bearing system including:
- an inner bearing race;
- an outer bearing race;
- and
- a plurality of rolling elements arranged between the bearing races;
- and
- a coupling element for coupling a dental instrument to be driven to said motor housing,
- said coupling element containing a coupling pin that is connected to the motor shaft and which is engagable with a drive pin of said dental instrument,
- said rolling elements each consisting of a non-electroconductive material;
- and
- said coupling element containing a pin which is connected to said motor shaft for coupling said shaft to a tool mounted on such dental instrument.
14 more elements
Dependencies are inferred from the claim text.