Dental handpiece or elbows for mounting dental treatment tools
US3934349A · kind A · utility
5Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1973 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Nov 5, 1993 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/141
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental handpiece or elbow having a guide sleeve for mounting a dental treatment tool, in which the inner annular surface of the guide sleeve is coated with a wear-resistant coating so as to enhance the strength thereof against hammering and radial forces generated during use of the handpiece. In the case where the sleeve is connected to the tool through the intermediary of a collet, the latter is also provided with a similar coating in at least the regions in contact with the guide sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.