Combination rake and grubber implement
US6763618B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Mar 11, 2003 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Mar 11, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B31/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A combination rake and grubber implement mounted on a work vehicle such as a tractor or bulldozer has four main members: a lower, open or partially-closed multi-toothed rake; an upper rake that can gather, according to design and porosity, various rake products; grubbers that may be deployed, while the vehicle is moving or stationary, anywhere in an arc perpendicular to the rake plane ranging from below the bottom of the rake to above the rake; and a linkage that when actuated by some mechanical, electrical, or pneumatic force, moves the grubbers through their range of motion. In operation the grubbers bring rocks, debris, and severed roots to the surface for simultaneous raking along with undesirable surface rocks, debris, and vegetation. During operation, the vehicle operator may independently control the rake and grubber positions with respect to each other and with respect to the ground without having to dismount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.