Rotationally and axially restrained drill bit and chuck assembly
US4990038A · kind A · utility
14Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1990 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Jan 29, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/953
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drill bit and chuck for interconnection with the end of a flexible drive shaft which axially and rotationally restrains the drill bit against becoming separated from the chuck during an operation requiring bone drilling, for example. The drill bit drive end has an eccentrically mounted boss with an enlarged head. A collet has an internal wall with an eccentric opening for receiving and locking with the drill bit boss head. The opposite end of the collet is staked onto the flexible shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.