Row unit for a seeding machine with pneumatic seed loading
US11297762B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2018 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Aug 21, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/206
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A row unit for a seeding machine includes a seed reservoir and a seed meter having a metering member with a seed side facing the seed reservoir, a non-seed side opposite the seed side, and a plurality of apertures. The seed meter is operable by pressure differential between the non-seed side and the seed side to adhere seeds to the seed side and move seeds from the seed reservoir. A conduit has a venturi with a throat disposed adjacent the metering member. The throat presents an opening directed toward the seed side and the plurality of apertures. The opening is configured to receive a seed adhered to one aperture of the plurality of apertures. An air pressure source is configured to provide greater than atmospheric air pressure on the non-seed side such that during operation of the row unit an air stream passes through the one aperture toward the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.