Dental handpiece
US5807108A · kind A · utility
23Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1997 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Sep 24, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/904
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental handpiece includes a turbine arranged in a handpiece head for rotating a tool, wherein the turbine is supported by slide bearings or roller bearings arranged on the side of the rotor or turbine facing the tool and on the side of the rotor or turbine facing away from the tool. The handpiece head includes an air duct for the propulsion air and a return duct for the returned or used air. At least one opening in the turbine chamber wall in the area near the axis is connected through a connecting duct to the return duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.