Air bearing for a dental handpiece
US4209293A · kind A · utility
7Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1978 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | Mar 8, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2316/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention relates to a driving mechanism of an air bearing journaled handpiece for dental treatment, the mechanism being improved in that even when a load contrary to the direction of rotation of a tool shaft such as cutting of the teeth acts upon the tool shaft in a dental operation, rotation of the tool shaft does not stop because of load resistance but enables the heretofore, unmaterialized medium-speed cutting (hereinafter referred to as "extension to medium-speed rotation") and makes it possible to obtain improved torque during high-speed rotation in addition to the extension to medium-speed rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.