Powered sharpener with cold forging member
US9914193B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2017 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Aug 14, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B23/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for sharpening a cutting tool having a blade portion with a cutting edge, such as but not limited to a kitchen knife. In some embodiments, a powered sharpener has an abrasive medium that is advanced by a motor and an edge guide surface adjacent the abrasive medium, wherein the cutting edge of the cutting tool is sharpened by bringing a first portion of the cutting edge into contacting engagement with the edge guide surface and drawing a second portion of the cutting edge across the abrasive medium. A plurality of spaced apart channels are formed in the sharpened cutting edge by contactingly engaging the sharpened cutting edge with a cold forging member with sufficient force to displace portions of the sharpened cutting edge. The channels in the sharpened cutting edge constitute locally deformed, work hardened notches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.