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US 11,103,944 B2Granted
Self-sharpening cutting tooth for a felling apparatus
AssigneeDeere & Company
InventorsAdam G. Harwood, Russell R. Reeg
Life of this patent
Estimating the term…
Abstract
A cutting tooth includes a tooth body having a mounting side, a front face spaced from the mounting side, and a plurality of lateral faces extending between the mounting side and the front face, the tooth body having an interior hardness, and a coating applied to at least one of the lateral faces to form a lateral hardface, the lateral hardface having a hardface hardness greater than the interior hardness, an edge of the lateral hardface closest to the front face and a portion of the front face adjacent the edge of the lateral hardface defining a cutting edge region of the tooth.
Claims13
A cutting tooth, comprising:
- a tooth body having a mounting side, a front face spaced from the mounting side, and a plurality of lateral faces extending between the mounting side and the front face, the tooth body having an interior hardness;
- a coating applied to at least one of the lateral faces to form a lateral hardface, the lateral hardface having a hardface hardness greater than the interior hardness, an edge of the lateral hardface closest to the front face and a portion of the front face adjacent the edge of the lateral hardface defining a cutting edge region of the cutting tooth, the cutting edge region being self-sharpening due to faster wear of the front face than of the lateral hardface due to a difference in hardness between the lateral hardface and the front face;
- and
- at least a portion of an outer surface of the tooth body hardened to form a hardened outer body layer having an outer body layer hardness greater than the interior hardness and less than the hardface hardness.
1 more element
Dependencies are inferred from the claim text.