| 摘要 |
A seed meter for an agricultural seed planter, wherein the seed meter includes a rotatable disk assembly for a seed meter to dispense individual seeds at desired intervals. The rotatable disk comprises a seed disk including a plurality of circumferentially spaced seed apertures about the periphery operatively connected to a vacuum source, a substantially nonmagnetic backing disk member having a plurality of vacuum apertures and also in communication with the vacuum source, a resilient disk member adjacent and engageable with the nonmagnetic backing disk comprising a plurality of magnetic portions engageable with a magnetic source and adapted to occlude the seed aperture and disrupt communication with the vacuum source. The seed disk, substantially nonmagnetic backing disk member and resilient disk member are also rotatably mounted within a housing on a conduit. The vacuum source is operatively connected to the inside of the housing.
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