Knife insert with bottom edge relief for cutting edge alignment
US8257148B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2009 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Nov 14, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/6492
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A grinding head of a grinder is provided with a knife assembly that includes a knife holder with a number of arms, each having a knife insert slot, for receiving a matching number of knife inserts. The knife inserts have a blade or cutting edge and a bottom edge. The bottom edge, rather than being a straight edge, is shaped to define a pair of bearing portions that fit within the slot of the knife holder arm and allow the knife insert to be firmly retained in the slot. A recessed area is located between the bearing portions. The recessed area accommodates any imperfections in the floor of the insert slot, and provides a void area within which any material contained within the slot can be received when the knife insert is engaged within the slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.