Agricultural implement with combined down force and depth control
US8522889B2 · kind B2 · utility
75Cited by
21References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2010 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Jun 9, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/205
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An agricultural implement system is provided that includes a down force cylinder configured to apply a downward force to a row unit, and a depth control cylinder configured to vary a penetration depth of a ground engaging tool of the row unit. The agricultural implement system also includes a valve assembly in fluid communication with the down force cylinder and the depth control cylinder. The valve assembly is configured to automatically adjust the downward force by varying fluid pressure within the down force cylinder based on fluid pressure within the depth control cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.