Back to results
US 4,725,098 AGranted
Erosion resistant cutting bit with hardfacing
AssigneeKennametal Inc.
InventorWayne H. Beach
Life of this patent
Estimating the term…
Abstract
A rotary cutting bit for use in mining and excavating applications that incorporates an annular groove about a head portion of the bit immediately rearwardly of where a hard tip of the bit is seated. A hardfacing material is deposited in the groove in the form of an annular ring.
Claims12
A cutting bit comprising:
- an elongate body having a rearward shank portion and a forward head portion;
- a wear resistant tip attached to a forward end of said head portion;
- and
- an annular ring of hardfacing attached about said head portion adjacent to and rearwardly of said tip attached thereon, a portion of said hardfacing being axially underneath said tip, said hardfacing being composed of a material harder than that of said head portion.
1 more element
A cutting bit comprising:
- an elongate body having a rearward shank portion and a forward head portion, said head portion has a groove defined therein adjacent to and rearwardly of a forward end of said head portion;
- a wear resistant tip attached to said forward end of said head portion;
- and
- an annular ring of hardfacing being deposited in said groove so as to be attached about said head portion adjacent to and rearwardly of said tip attached thereon, a portion of said hardfacing being axially underneath said tip, said hardfacing being composed of a material harder than that of said head portion, said tip has a maximum diameter portion, and the minimum diameter of the body at the groove being less than the maximum diameter of the tip.
1 more element
Dependencies are inferred from the claim text.