Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1999-07-21
2000-09-19
Lucchesi, Nicholas D.
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
A61C 105
Patent
active
061202916
ABSTRACT:
The invention relates to a turbine handpiece (1), in particular for medical or dental-medical purposes, having a drive shaft (2), rotatably mounted in the forward end region of the handpiece (1), with which a tool can be connected by a mounting device, whereby there is arranged on the drive shaft (2), fixed for rotation therewith, a turbine wheel (4) in a turbine chamber (5), in which a delivery line (11) for a flowing pressure medium opens at an inlet opening (11a) and from which a discharge line (12) extends at an outlet opening (12a), whereby a apparatus (22) is provided which after a switching-off of the pressure medium supply, during the running on of the turbine wheel (4), prevents a release of the pressure medium rotating in the turbine chamber (5) through the discharge line. The latter is simplified and improved in that the apparatus (22) is arranged in the region of the turbine chamber (5) and in functional operation deflects the pressure medium rotating in the turbine chamber (5) past the outlet opening (12a).
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European Search Report, Jan. 8, 1999.
Bareth Erich
Mohr Eugen
Kaltenbach & Voigt GmbH & Co.
Lucchesi Nicholas D.
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