Spray shield
US4850868A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1987 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jul 13, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/0202
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The apparatus comprises a tubular member that is adapted to be attached to the working end of a dental handpiece and is used to contain and direct material dispensed from the handpiece in order to reduce the amount of airborne particles emitted into the atmosphere by the handpiece and to accurately direct the dispensed material to the desired area. The apparatus is adapted to provide a reference point for the practitioner in establishing the optimum working distance of the handpiece from a particular working area in the mouth when the handpiece is used. An improved dental handpiece using the apparatus of the invention and a method of using the apparatus are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.