Tool body for rotatable tool

Details Tool body for rotatable tool Tool body for rotatable tool

2008-08-27

2010-12-14

Singh, Sunil (Department: 3672)

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Rolling or rotatable bit

Reexamination Certificate

active

07850250

ABSTRACT:
A rotatable tool has a tool body that is generally symmetrical about a longitudinal axis, an enlarged cutting head, and a rearwardly extending shank. The shank joins the enlarged cutting head at an annular flange having an annular inner portion contiguous with the forward end of the shank and an annular outer portion contiguous with the outer circumference of the enlarged cutting head. The annular flange is not planar. Instead, the annular inner portion of the flange is positioned axially forward of the annular outer portion.

REFERENCES:
patent: 4684176 (1987-08-01), Besten et al.
patent: 4755003 (1988-07-01), Pinkerton et al.
patent: 4921310 (1990-05-01), Hedlund et al.
patent: 6357832 (2002-03-01), Sollami
patent: 6644755 (2003-11-01), Kammerer
patent: 7475948 (2009-01-01), Hall et al.
patent: 2002/0175555 (2002-11-01), Mercier
patent: 2006/0279134 (2006-12-01), Frear
patent: 2008/0036276 (2008-02-01), Hall et al.

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