Cutterhead for a vegetation cutter
US4893410A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Nov 21, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D34/416
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a cutterhead for attachment to a vegetation cutting apparatus. The cutterhead has a housing with a spool on which a coil of cutting filament is wound. The cutting filament is paid out in incremental lengths when its ends effective for cutting are worn. This is achieved with an incremental rotation of the spool while the cutterhead rotates. For this purpose, the filament coil must have a winding rotation corresponding to the direction of rotation of the cutterhead. So that the cutterhead can be utilized for oppositely directed rotations as desired, the spool can be turned over through 180.degree. and can be blocked and released in both positions by means of a switching member to provide the incremental rotation. The spool can be seated on the switching member and its position, when installed, is determined by means of a marking which is applied to the adapter nut and to the spool. The adapter nut serves to tighten the cutterhead onto the vegetation cutting apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.