Hand-held pneumatic implement for removing dental scale
US4484892A · kind A · utility
11Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1982 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | May 5, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A hand-held implement for removing dental scale provided with a rigid shaft to which is applied vibrations in a rotational or circumferential direction by a dynamically unbalanced air driven turbine. The rotor of the turbine is coupled to the shaft by a bearing and the shaft is restrained from rotating and restrained axially. Provision is made for supplying cooling water through the shaft to a dental scale removing tool mounted on a free end of the vibrated shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.