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US 12,345,158 B1Granted
Bit tip insert
AssigneeThe Sollami Company
InventorPhillip Sollami
Life of this patent
Estimating the term…
Abstract
A rotatable or non-rotatable bit for road milling, mining, and trenching equipment that includes a substantially solid body and a substantially solid, generally cylindrical shank depending from a bottom of the body. The forward portion is machined to include a bore having a bore termination with a flat distal end and an arcuate portion curving into the sidewall of the bore. The bore is adapted to receive a bit tip insert complementary shaped to the bore of the forward portion, the bit tip insert comprising at least three evenly spaced ribs on an outer surface of a base of the bit tip insert.
Claims28
A bit tip insert comprising:
- a base comprising an outer elongate acutely-tapered sidewall and a rounded annular axially radiused distal outer surface adjacent the outer elongate acutely-tapered sidewall, the outer elongate acutely-tapered sidewall comprising a plurality of evenly spaced elongate axially-oriented radially and outwardly extending ribs thereon, the outer elongate acutely-tapered sidewall forming an acute angle with a longitudinal axis of the bit tip insert;
- a tip adjacent a forward end of the base, the tip comprising an apex at a forward end of the tip and one of a radiused tip profile and an angular tip profile subjacent the forward end of the tip, the tip profile comprising a parabolic first outer surface adjacent the apex of the tip and one of a parabolic second outer surface and a conical second outer surface adjacent the parabolic first outer surface;
- and
- the rounded annular axially radiused distal outer surface disposed between a distal end of said outer elongate acutely-tapered sidewall and a central planar bottom surface at a distal end of the base, said rounded annular axially radiused distal outer surface enclosing said base from the distal end of the outer elongate acutely-tapered sidewall to the central planar bottom surface, and said rounded annular axially radiused distal outer surface comprising convex surface boundaries continuously formed with a surface next thereto, except for concave surfaces defining outlines of each of said ribs.
1 more element
A bit comprising:
- a substantially solid body and a generally cylindrical shank depending axially from a bottom of the body;
- a bore axially extending from a forward end of the body axially inward to a bore termination, the bore comprising a hollow tapered sidewall and an arcuate portion axially extending from a bottom of said sidewall of the bore to the bore termination;
- and
- a bit tip insert comprising:
- a base comprising an outer elongate acutely-tapered sidewall and a rounded annular axially radiused distal outer surface adjacent the outer elongate acutely-tapered sidewall, the outer elongate acutely-tapered sidewall comprising a plurality of evenly spaced elongate axially-oriented radially and outwardly extending ribs thereon, the outer elongate acutely-tapered sidewall forming an acute angle with a longitudinal axis of the bit tip insert, the base of the bit tip insert adapted to be mounted and brazed within the complementarily shaped bore of the bit;
- a tip adjacent a forward end of the base, the tip comprising an apex adjacent a forward end of the tip and one of a radiused tip profile and an angular tip profile, the tip profile comprising a parabolic first outer surface adjacent the apex of the tip and one of a parabolic second outer surface and a conical second outer surface adjacent the parabolic first outer surface;
- and
- the rounded annular axially radiused distal outer surface disposed between a distal end of said outer elongate acutely-tapered sidewall and a central planar bottom surface at a distal end of the base, said rounded annular axially radiused distal outer surface enclosing said base from the distal end of the outer elongate acutely-tapered sidewall to the central planar bottom surface, and said rounded annular axially radiused distal outer surface comprising convex surface boundaries continuously formed with a surface next thereto, except for concave surfaces defining outlines of each of said ribs.
5 more elements
A high temperature high pressure formed tungsten carbide bit tip insert with a continuous solid rounded surface thereover, comprising:
- a lower base portion comprising a tapered portion including an axially acutely-tapered outer sidewall, a rounded annular axially radiused portion adjacent the axially acutely-tapered outer sidewall, and a first central planar bottom surface at a distal end of the lower base portion adjacent the rounded annular axially radiused portion, the axially acutely-tapered outer sidewall comprising a plurality of elongate axially oriented radially and outwardly extending ribs in evenly arcuately spaced orientation around said axially acutely-tapered outer sidewall of said tapered portion, the axially acutely-tapered outer sidewall forming an acute angle with a longitudinal axis of the bit tip insert;
- a generally cylindrical middle section extending axially upwardly from said lower base portion;
- a forward tip portion extending axially upwardly from said generally cylindrical middle section, the forward tip portion comprising an apex at a forward end of the forward tip portion and one of a radiused tip profile and an angular tip profile adjacent the forward end of the forward tip portion, the forward tip portion comprising a parabolic first outer surface adjacent the apex and one of a parabolic second outer surface and a conical second outer surface adjacent the parabolic first outer surface;
- and
- the rounded annular axially radiused portion disposed between a bottom of said axially acutely-tapered outer sidewall and said first central planar bottom surface, said rounded annular axially radiused portion enclosing said lower base portion from the bottom of the axially acutely-tapered outer sidewall to the first central planar bottom surface, and said rounded annular axially radiused portion comprising convex surface boundaries continuously formed with a surface next thereto, except for concave surfaces defining outlines of each of said ribs.
2 more elements
A high temperature high pressure formed tungsten carbide bit tip insert, with a continuous solid rounded surface thereover, comprising:
- a lower base portion comprising a first central planar bottom surface at a distal end of the lower base portion;
- a generally cylindrical middle section extending axially upwardly from said lower base portion, said lower base portion defining a tapered portion including an axially acutely-tapered outer sidewall extending from said generally cylindrical middle section, the acutely-tapered outer sidewall forming an acute angle with a longitudinal axis of the bit tip insert;
- a forward tip portion extending axially upwardly from said generally cylindrical middle section;
- a plurality of elongate axially oriented radially and outwardly extending ribs in evenly arcuately spaced orientation around said acutely-tapered outer sidewall of said tapered portion;
- and
- a rounded annular axially radiused portion between a bottom of said acutely-tapered outer sidewall and said first central planar bottom surface, said rounded annular axially radiused portion enclosing said lower base portion from the bottom of the acutely-tapered outer sidewall to the first central planar bottom surface, and said rounded annular axially radiused portion comprising convex surface boundaries continuously formed with a surface next thereto, except for concave surfaces defining outlines of each of said ribs.
3 more elements
A tungsten carbide bit comprising:
- a substantially solid body and a generally cylindrical shank depending axially from a bottom of the body, the substantially solid body comprising a steel body;
- a bore axially extending from a forward end of the substantially solid body axially inward to a bore termination, the bore comprising a hollow tapered sidewall and an arcuate portion axially extending from a bottom of said sidewall of the bore to the bore termination;
- and
- a bit tip insert comprising:
- a base comprising a radiused distal surface adjacent a distal end of the base and an outer elongate acutely-tapered sidewall, the outer elongate acutely-tapered sidewall comprising a plurality of evenly spaced elongate axially-oriented ribs thereon and a plurality of concave surfaces defining outlines of each of said ribs, the outer elongate acutely-tapered sidewall forming an acute angle with a longitudinal axis of the bit tip insert, the base of the bit tip insert adapted to be mounted and brazed within the bore of the substantially solid body, the bore being complementary shaped with the base of the bit tip insert;
- and
- a tip adjacent a forward end of the base, the tip comprising an apex adjacent a forward end of the tip and one of a radiused tip profile and an angular tip profile, the tip profile comprising a parabolic first outer surface adjacent the forward end of the tip, and one of a parabolic second outer surface and a conical second outer surface adjacent the parabolic first outer surface, each outer surface of the bit tip insert comprising a convex surface.
4 more elements
Dependencies are inferred from the claim text.