Device for calibrating drill bill of a chuck
US9796061B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 1, 2015 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Feb 18, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B3/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A device for calibrating a drill bit of a chuck includes an intermediate sleeve including two rear curved elements, a front shoulder, internal threads rearward of the shoulder, and an externally threaded extension projecting out of a front end; a front window including a diametrical calibrating line; an externally threaded rim secured to the internal threads to urge the window against the shoulder; and a ring having internal threads secured to the extension. A fastening of the chuck and the device, a loosening of the retainer ring, and a rotation of the rear holding member to rotate the drill bit can align the drill bit with the calibrating line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.