Patent ID: 8863857
Filing Date: 2014-10-21
Classification: A01C

Abstract:
1. An agricultural row unit for use with a towing frame hitched to a tractor, said row unit comprising: an attachment frame adapted to be rigidly connected to said towing frame, a first parallel linkage pivotably coupled to said attachment frame and having a first pair of parallel links, a first movable frame pivotably coupled to said first parallel linkage to permit vertical pivoting movement of said first movable frame relative to said first parallel linkage, a furrow-opening device mounted on said first movable frame, a first biasing element pivotably attached to said first parallel linkage and coupled to said first movable frame for urging said furrow-opening device downwardly against the soil, a second parallel linkage pivotably coupled to said first movable frame and having a second pair of parallel links, a second movable frame pivotably coupled to said second parallel linkage to permit vertical pivoting movement of said second movable frame relative to said second parallel linkage, at least one furrow-closing device mounted on said second movable frame, and a second biasing element pivotably attached to said second parallel linkage and coupled to said second movable frame for urging said at least one furrow-closing device downwardly against the soil.