Knife sharpener
US5245789A · kind A · utility
11Cited by
14References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1992 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | May 26, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B3/54
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A knife sharpener has a slotted casing for housing grinding wheels made up of modular elements placed in back-to-back relation to form an assembly interfitting with a second assembly. The two assemblies rotate in opposite directions for peripheral grinding. Plastic gears adhesively fastened to the wheels interconnect a high speed universal motor to the grinding wheels to effect a 3.55 speed reduction. Simultaneous hollow grinding is effected with a burr free edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.