Parallel link trailing arm for seeders
US7261048B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 2006 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Apr 19, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A furrow opener apparatus includes a parallel link trailing arm having a rear link that is maintained substantially horizontal as the arm moves up and down. Front and rear furrow openers are attached to the rear link. A packer wheel arm is attached to the rear link and extends rearward and downward from the rear link, and a packer wheel is mounted to the packer wheel arm and aligned with one of the furrow openers. A bias device exerts a downward bias force on the trailing arm, furrow openers, and packer wheel. The furrow openers, the packer wheel, and the rear link are maintained in rigid orientation with respect to each other when in a working mode, and a vertical operating position of at least one of the furrow openers with respect to the packer wheel is adjustable to vary a depth of the furrow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.