Hand-held sharpener with multiple abrasive rods to sharpen a cutting edge of a tool
US9039494B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2011 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Oct 29, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D15/065
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A multi-rod hand-held sharpener includes a handle with an outer grip surface for a hand of a user, a first abrasive rod having a first outer abrasive surface with a first abrasiveness level, and a second abrasive rod having a second outer abrasive surface with a second abrasiveness level different from the first abrasiveness level. At least one guide surface extends toward the first sharpening surface at a selected guide angle non-orthogonal to the first sharpening surface. The user contactingly engages a side of the tool against the guide surface and a cutting edge of the tool against the first abrasive surface, and then advances the side of the tool away from the guide surface and the cutting edge against the first abrasive surface while maintaining the tool at the selected guide angle. An optional second guide adjacent the second abrasive surface at a different angle facilitates micro-beveling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.