Dental treatment device
US4720266A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1986 |
| Grant date | Jan 19, 1988 |
| Priority date | — |
| Expiry date | Mar 26, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/18
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This device comprises a dental handpiece (15), notably a contra-angle, detachably coupled to a socket (35) so that the handpiece can rotate freely relative to the socket, this socket incorporating a micromotor for driving the dental treatment tool. The handpiece comprises means for illuminating the treatment area and the electric power supply between the two elements is taking place by means of spring loaded contact pistons (19, 22) parallel to the handpiece axis and projecting from the front face of one of the two elements, the contact pistons being adapted, in the coupled condition, to be urged against corresponding annular electric tracks (18, 21) provided at the end of the other element, these tracks being insulated from each other by a ring (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.