Dental hand piece
US4498868A · kind A · utility
17Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1982 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Jul 14, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/07
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved dental hand piece which has a driven tool which either is rotated or reciprocated and includes an illumination arrangement for projecting light from an exit end at a tip of the tool and the work area includes a stroboscopic device for creating light pulses having a light frequency which coincides with a motion frequency of the tool in such a manner that the surface of the tool is visible during motion. The stroboscopic device can either be a mechanical stroboscope or be a high-speed flash stroboscope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.