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

Claim 16:
17. 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;
a Hall effect sensor configured to detect rotations of said magnet with respect to said Hall effect sensor;

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;
wherein a biasing member is disposed in said depth adjustment body, said depth adjustment body connected to said gear box via a shaft, said shaft connected to said gear box and extending into said depth adjustment body, said biasing member biasing said gear box towards said gear rack.