Monofilament weed cutters
US4186239A · kind A · utility
107Cited by
9References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1978 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Feb 7, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2978
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved filament for use in the cutting of weeds and vegetation, wherein the filament is attached at one end to a hub for imparting rotary motion to the filament. The centrifugal force extends the filament radially outwardly from the hub, with the energy of rotation being utilized to sever or cut the vegetation. The filament has a generally centrally disposed axis with an irregular or variant cross-section which fluctuates along the axial length of the filament. The variant cross-section with its fluctuations in cross-sectional area reduce the end or terminal fibrillation of the filament.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.