Handle for dental canal rotary instrument and method of manufacturing same
US4478578A · kind A · utility
15Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1982 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Feb 1, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/907
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This dental canal rotary instrument comprises a handle having a hollow metal sleeve surrounding concentrically the inoperative end of the instrument shank; a suitable plastic material is cast into a mold so as to fill the gap left between the sleeve and the shank to form a plastic core embedding the shank, the latter protruding from at least one of the sleeve ends; a notch is formed in the sleeve for anchoring the sleeve and the plastic core, and a flat face is provided on the embedded shank end, in order to improve the adherence of the sleeve, core and shank to one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.