Rotary lawn mower cutting blade
US8458998B2 · kind B2 · utility
1Cited by
80References
41Claims
0Family size
Inventor
Key dates
| Filing date | Feb 15, 2007 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Feb 15, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D34/73
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A rotary lawn mower cutting blade with reduced drag and improved cutting ability includes a central mounting section, intermediate sections, and outboard sections along a common longitudinal axis and disposed about a common center of rotation. The outboard sections includes downward and inward projecting sections. The cutting blade also preferably includes cutting edges on the full extent of the leading edge of the outboard section including the downward and inward projecting sections. Additionally, the outer section can be twisted slightly to enhance airflow upward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.