Tool blades with multiple cutting edges
US9320188B1 · kind B1 · utility
Inventor
Key dates
| Filing date | May 7, 2015 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | May 7, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C5/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A tool blade for use with a handle includes a pan having a top surface and bottom surface opposite the top surface, the pan having a top edge and a cutting edge opposite the top edge and having a pair of opposed side edges extending between the top edge and the cutting edge. The top edge of the pan includes a handle sleeve defining a channel configured to receive an end of the handle. The bottom edge is integrally connected to the pan and is sharpened so as to penetrate a ground surface. A plurality of grating teeth is formed on the pan, each grating tooth having a scoop projecting outwardly from the pan and a cutout. A cutout traverses through the pan and defines an opening connecting the top and bottom surfaces. A respective scoop includes a portion partially covering the cutout and having an arcuate cutting edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.