Wear ring for a rotatable tool

Details Wear ring for a rotatable tool Wear ring for a rotatable tool

2007-03-27

2007-03-27

Kreck, John (Department: 3673)

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Wear shield or replaceable wear sleeve

C299S107000

Reexamination Certificate

active

11416695

ABSTRACT:
A tool has a tapered forward cutting end behind which is a cylindrical shank. A rearwardly facing annular flange separates the forward cutting end from the shank. The shank is received in a tool holder having a planar forward surface, and fitted around the shank of the tool and resting on the forward surface of the tool holder is an annular wear ring. The wear ring has a small outer diameter portion that is less than the outer diameter of the radial flange and less than the diameter of the forward end of the tool holder, thereby allowing a gap between those parts to receive an extraction tool. The wear ring also has a large outer diameter portion at least equal to the diameter of the forward surface of the tool holder.

REFERENCES:
patent: 3342531 (1967-09-01), Krekeler
patent: 4818027 (1989-04-01), Simon
patent: 5931542 (1999-08-01), Britzke et al.
patent: 2004/0004389 (2004-01-01), Latham
patent: 10110015 (2002-10-01), None

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