Grass blade for a trimmer
US9468143B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2013 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Feb 11, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/936
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cutting blade for a hand-guided trimmer with a drive motor has a disk-shaped base member with cutting teeth disposed about a circumference of the base member. The base member has a first face and a second face opposite the first face. The cutting teeth each have a tooth face edge, the tooth face edge leading in driving direction of the cutting blade and extending radially, and a tooth back edge extending in the circumferential direction. The tooth face edge and the tooth back edge of the cutting teeth are alternatingly ground on the first face or the second face in the circumferential direction and define together a common cutting tip that is leading in the drive direction. Several of the cutting tips of the cutting teeth that are sequentially arranged in the circumferential direction are positioned in a common plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.