Row control system for vacuum operated seed planter
US6718891B1 · kind B1 · utility
13Cited by
3References
12Claims
0Family size
Inventors
Key dates
| Filing date | Aug 6, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Aug 6, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/042
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A seed planter having a plurality of vacuum operated seed metering units includes a valve assembly connected between the metering units and the vacuum manifold permitting discrete control of the operation of each metering unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.