Width adjustable sharpener
US6709320B2 · kind B2 · utility
6Cited by
5References
5Claims
0Family size
Inventor
Key dates
| Filing date | Mar 6, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Jun 11, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D15/082
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A knife sharpener includes a handle and an operation portion in which two grinding members are respectively and pivotably received. An aperture is defined through a top of the operation portion and communicates with the grinding members. Each of the two grinding members has a rod extending radially therefrom so as to be engaged with one of two respective spiral grooves of a shaft rotatably received below the grinding members. A positioning member is removably engaged with the shaft. A width between the two grinding members can be adjusted by rotating the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.