Seed meter having seed disk aperture cleaning wiper and brush arrangement
US4793511A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1986 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Mar 17, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/046
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a seed meter in which individual seeds from a seed mass within a first chamber on a first side of a seed disk rotatably mounted within a housing are transported by at least one circumferential row of apertures within the seed disk to a separate seed discharge area within the first chamber by the reduced pressure of a vacuum source coupled to a second chamber within the housing and on the opposite side of the seed disk from the first chamber, a brush and wiper arrangement mounted within a third chamber within and sealed from the second chamber and located opposite the seed discharge area bears against the second side of the seed disk to aid in dislodging and expelling debris from the apertures in the seed disk. The brush and wiper arrangement includes at least one circular brush rotatably mounted within the third chamber and a spring arrangement for biasing the circular brush and an adjacent circular band against the second surface of the seed disk at the at least one row of apertures. Also included is a relatively thin, generally planar wiper blade having a straight edge disposed against the second side of the seed disk and a leaf spring mounting the wiper blade and operative to…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.