Embossed washer
AssigneeKennametal Inc.
InventorStephen P. Stiffler
Life of this patent
Estimating the term…
Loading patent…
AssigneeKennametal Inc.
InventorStephen P. Stiffler
Estimating the term…
A rotatable cutting bit, and rotatable cutting bit—bit holder assembly and washer that have increased wear resistance characteristics. The assembly incorporates a new holding washer design that has improved rotational characteristics between the cutter bit and top surface of the washer during operation. The washer includes a front face and a generally flat rear face, said front face has a plurality of ridges, said ridges each have a top face forming a bearing surface for the cutting bit to enhance rotation of the cutter bit and the flat rear face reduces rotation of said washer. The relative rotation between the rear face of the washer and front of the block face is reduced in the present invention. The improved wear resistance properties of the invention reduce the amount of necessary maintenance of rotary drums in the field resulting in reduce downtime and increase productivity. The washer is also simple to manufacture in a cost effective manner and easy to assemble in the field.
A washer for a rotatable cutting bit wherein the cutting bit has a cutter bit head that presents a bottom face, the washer comprising:
A rotatable cutting bit assembly comprising:
A rotatable cutting bit assembly comprising:
A washer for a rotatable cutting bit wherein the cutting bit has a cutter bit head that presents a bottom face, the washer comprising:
A rotatable cutting bit assembly comprising:
Dependencies are inferred from the claim text.