Guard for filament-type trimmer for protection while trimming vegetation
US7963041B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 2, 2007 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Apr 29, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D34/416
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A guard including three sub-systems: a main guard body, a solid shield, and an attachment mechanism. The main guard body includes a base, a peripheral exterior ring, and a plurality of supports for holding the peripheral exterior ring in spaced relationship with the base. Together, the base, the peripheral exterior ring, and the plurality of supports define at least one aperture. The solid shield is attachable to the main guard body. The attachment mechanism is used to attach the main guard body to an extension member of a filament-type trimmer. When positioned, a rotatable non-rigid filament of the filament-type trimmer is peripherally surrounded by the main guard body when the rotatable non-rigid filament is rotating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.