Patent ID: 6176393
Filing Date: 2001-01-23
Classification: A01C

Abstract:
A seed meter for an agricultural machine, the seed meter comprising:a housing having an inlet for receiving seed, an outlet through which metered seed is dispensed, and a pneumatic connection for receiving air pressure;a rotatable seed disc is positioned in the housing, the seed disc is provided with circumferentially arranged apertures, air pressure from the pneumatic connection attracts seeds to the apertures, the seed disc is provided with a seed receiving side which is in communication with the inlet;a seal is located between the housing and the seed disc, the seal defines a seed capture zone and a seed release zone, in the seed capture zone air pressure from the pneumatic connection traps seed on the seed receiving side of the disc, in the seed release zone the air pressure is isolated from the seed disc releasing seeds trapped on the disc so the seed can exit the housing through the outlet; anda screen having holes smaller than the apertures is located over the apertures on the seed receiving side of the seed disc for trapping seed adjacent.