Agricultural disc mower with knife-retaining spring plate
AssigneeCNH Industrial America LLC
InventorAlbert Childs
Life of this patent
Estimating the term…
Abstract
A disc cutter for an agricultural implement includes: a disc body; a knife nut coupled to the disc body; a knife including a knife opening in which the knife nut is disposed, the knife being configured to rotate about a rotation axis defined by the knife nut; and a spring plate carrying at least two protrusions, the spring plate being biased towards the disc body such that in a first position the spring plate bears on the knife so a plane defined through a portion of the knife extends through the protrusions until an overload force applied to the knife forces the knife over at least one of the protrusions and moves the spring plate to a second position.
Claims20
A disc cutter for an agricultural implement, comprising:
- a disc body;
- a knife nut coupled to the disc body;
- a knife comprising a knife opening in which the knife nut is disposed, the knife being configured to rotate about a rotation axis defined by the knife nut;
- and
- a spring plate carrying at least two protrusions, the spring plate being biased towards the disc body such that in a first position the spring plate bears on the knife so a plane defined through a portion of the knife extends through the protrusions until an overload force applied to the knife forces the knife over at least one of the protrusions and moves the spring plate to a second position.
A cutter bar for an agricultural implement, comprising:
- a frame;
- and
- a plurality of disc cutters carried by the frame, at least one of the disc cutters comprising:
- a disc body;
- a knife nut coupled to the disc body;
- a knife comprising a knife opening in which the knife nut is disposed, the knife being configured to rotate about a rotation axis defined by the knife nut;
- and
- a spring plate carrying at least two protrusions, the spring plate being biased towards the disc body such that in a first position the spring plate bears on the knife so a plane defined through a portion of the knife extends through the protrusions until an overload force applied to the knife forces the knife over at least one of the protrusions and moves the spring plate to a second position.
An agricultural mowing assembly, comprising:
- an agricultural vehicle;
- and
- an agricultural implement coupled to the agricultural vehicle, the agricultural implement comprising a cutter bar, the cutter bar comprising:
- a frame;
- and
- a plurality of disc cutters carried by the frame, at least one of the disc cutters comprising:
- a disc body;
- a knife nut coupled to the disc body;
- a knife comprising a knife opening in which the knife nut is disposed, the knife being configured to rotate about a rotation axis defined by the knife nut;
- and
- a spring plate carrying at least two protrusions, the spring plate being biased towards the disc body such that in a first position the spring plate bears on the knife so a plane defined through a portion of the knife extends through the protrusions until an overload force applied to the knife forces the knife over at least one of the protrusions and moves the spring plate to a second position.
Dependencies are inferred from the claim text.