Patent ID: 8544398
Filing Date: 2013-10-01
Classification: A01B,A01C

Abstract:
1. An agricultural row unit for use with a towing frame hitched to a tractor, said agricultural row unit comprising an attachment frame adapted to be coupled to said towing frame, a support member pivotably coupled to said attachment frame to permit vertical pivoting movement of said support member relative to said attachment frame, at least one furrow-closing device mounted on said support member, a hydraulic cylinder coupled to said support member for urging said support member downwardly toward the soil, said hydraulic cylinder including a movable ram extending into said hydraulic cylinder, and a hydraulic-fluid cavity within said hydraulic cylinder for receiving pressurized hydraulic fluid for urging said ram in a first direction that pivots said support member in a first vertical direction, and an accumulator having a fluid chamber containing a pressurized gas for urging said ram in a second direction that pivots said support member in a second vertical direction.