Handpiece for dental or surgical use
US7214060B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2005 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | May 7, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/147
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
At the front, a handpiece (1) has a clamp (10) fitted to tightly grip the shank of a removable tool housed in guide holes (23, 25). The clamp has two or more levers (26) attached to an annular section (22) of the clamp by elastic joints (27), each of which has a gripping jaw (20) to grip the tool shank. On each lever, the gripping jaw (20) is located much closer to the joint (27) than to a supporting surface, on which a tightening mechanism (17) exerts a centripetal force so that the lever multiplies this force. The tightening mechanism preferably has a sliding sleeve (40) having a conical inside surface (44), which produces the force at the levers of the clamp by means of balls (45) housed in the holes of a hollow rotatable shaft (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.