High speed drill bit sharpener
US11945072B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jun 3, 2020 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Jan 27, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B3/247
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus comprising a cylindrical die holder base containing two recessed compartments, two different abrasive coated sharpen dies, a cylindrical index containing drill bit guide holes used to align drill bit dead center with the sharpening dies, male and female hemispheres on the index and the base to ensure alignment, a spring assembly allowing for separation of index from base while rotating index, a cylindrical safety guard used to cover index holes that are not aligned with sharpening dies, a locking knob used to lock and unlock index to base to allow or disallow rotation, and a radiused handle with a flat bottom used to safely hold drill sharpening device down on a flat surface while in use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.