Dental handpiece
US4245985A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1979 |
| Grant date | Jan 20, 1981 |
| Priority date | — |
| Expiry date | Feb 21, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/185
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental handpiece having a holding sleeve, a driven shaft rotatable in the holding sleeve to drive a dental instrument, a driving device releasably connected to the holding sleeve and having a drive shaft which is drivingly connected to the driven shaft via a drive-transmission unit which is removably mounted in the holding sleeve. The unit comprises a bearing sleeve which houses one or more shafts, and optionally a ball-type planetary transmission, and is mountable in and removable from the holding sleeve through an end of the holding sleeve remote from the instrument end of the handpiece. The bearing sleeve is secured in the holding sleeve against axial and rotational movement relative to the holding sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.