Aerodynamic cutting string
US5761816A · kind A · utility
24Cited by
12References
9Claims
0Family size
Inventors
Key dates
| Filing date | May 31, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | May 31, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2973
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An aerodynamic cutting string for use with such devices as flexible line trimmers and the like. The string incorporates a number of embodiments which eliminates or greatly reduces the drag, fluttering and force imbalances which are created as a result of the pressure differential and wake which are formed behind the flexible line as it moves. This accomplishment is achieved by employing an aerodynamic profile for the line which lowers the coefficient of drag and reduces the forces created by the air foil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.