Grinding device
US6475063B2 · kind B2 · utility
3Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 6, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | May 2, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B3/42
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An automatic grinding device for sharpening the knives of a forage harvester chopper drum includes a controller including a counter for counting the number of times the grindstone is adjusted toward the chopper drum during sharpening operation. The controller includes a microprocessor having a non-volatile memory in which may be stored a threshold value, determined by the type of grindstone, to which the count of the counter may be compared for generating a signal indicating the degree of wear of the grindstone so that it may be replaced when worn out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.