Pyramidal shaped, hardened insert for an agricultural tool
AssigneeKennametal Inc.
InventorDon C. Rowlett
Life of this patent
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Abstract
A self-sharpening pyramidal shaped insert of a refractory hard metal for use as a leading penetrating element of a soil opener member of an agricultural tool. The insert includes a boss member of a generally frustoconical shape including a circular bottom and outwardly curved side surface extending upwardly from the circular bottom and terminating in a flange, and a penetrating tip having four nonparallel triangular sides, each triangular side having a common leg with a bordering triangular side and a third leg contiguous the flange. The triangular sides converge to a common vertex. The insert inhibits wear of the agricultural tool and contributes to proper soil flow as the agricultural tool cuts a slice in the soil.
Claims17
A pyramidal shaped insert of a refractory hard metal for use as a leading penetrating element of an agricultural tool including a soil opener member useful for applying material beneath the surface of the ground, whereby said insert inhibits wear of the agricultural tool and contributes to proper soil flow as the soil opener member cuts a slice in the soil, said insert comprising:
- a) a boss member of a generally frustoconical shape including a circular bottom and an outwardly curved side surface extending upwardly from said circular bottom and terminating in a flange, and
- b) a penetrating tip having four nonparallel triangular sides, each triangular side having a common leg with a bordering triangular side and a third leg contiguous said flange, said triangular sides converging to a common vertex, such that the insert wears sharp as the soil passes the triangular sides and the leg of each triangular side contributes to proper soil flow as the soil opener member cuts a slice in the soil.
A pyramidal shaped insert of a refractory hard metal for use as a leading penetrating element of a soil opener member of an agricultural tool useful for applying material beneath the surface of the ground, whereby said insert inhibits wear of the agricultural tool and contributes to proper soil flow as the soil opener member cuts a slice in the soil, said insert comprising:
- a) a boss member of a generally frustoconical shape including a circular bottom and an outwardly curved side surface extending upwardly from said circular bottom and terminating in a flange, wherein said flange is of a shape having a perimeter composed of four planar side segments of equivalent length, and
- b) a penetrating tip having four nonparallel triangular sides, each triangular side having a common leg with a bordering triangular side and a third leg contiguous a planar side segment of said flange, said triangular sides converging to a common vertex, such that the insert wears sharp as the soil passes the triangular sides and the leg of each triangular side contributes to proper soil flow as the soil opener member cuts a slice in the soil.
Dependencies are inferred from the claim text.