Patent ID: 11882782
Assignee: PRECISION PLANTING LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC A | IPC A

Claim 0:
1. An agricultural row unit, comprising:
a row unit frame;
a furrow opening disc rotatably supported by said row unit frame for opening a furrow in a soil surface as the row unit frame advances in a forward direction of travel;
a gauge wheel disposed adjacent to said furrow opening disc and pivotably supported from said row unit frame by a gauge wheel arm such that said gauge wheel is displaceable with respect to said furrow opening disc;
a depth adjustment assembly, comprising:
a depth adjustment body pivotally connected via a pivot to said row unit frame;
a gear rack disposed on said row unit frame;
a gear box connected to said depth adjustment body;
an electric motor operably coupled to drive a gear of said gear box in engagement with said gear rack;
a magnet rotatably coupled with said electric motor or a motor shaft;
a Hall effect sensor configured to detect rotations of said magnet with respect to said Hall effect sensor;
a current sensor configured to detect an occurrence of a spike in current to the electric motor; and
a stop disposed on said gear rack;
whereby driving said gear in engagement with said gear rack by said electric motor adjustably positions said depth adjustment body with respect to said gear rack to control a depth of the furrow opened by the furrow opening disc by limiting an amount of upward travel of said gauge wheel with respect to said furrow opening disc.