Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate
2011-08-23
2011-08-23
Gay, Jennifer H (Department: 3676)
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
C175S420100
Reexamination Certificate
active
08002054
ABSTRACT:
A roof drill bit has an elongate roof drill bit body, which has a forward end and a rearward end. The roof drill bit body contains a slot at the forward end. The roof drill bit body contains a dust port wherein the dust port has a central longitudinal dust axis. The roof drill bit further has a hard insert received within the slot wherein the hard insert has a leading surface. The leading surface of the hard insert is rotationally forward of the central longitudinal dust axis of the dust port.
REFERENCES:
patent: 3089552 (1963-05-01), Black et al.
patent: 3415332 (1968-12-01), Bower, Jr.
patent: 4190125 (1980-02-01), Emmerich et al.
patent: 4492278 (1985-01-01), Leighton
patent: 4515230 (1985-05-01), Means et al.
patent: 4550791 (1985-11-01), Isakov
patent: 4627665 (1986-12-01), Ewing et al.
patent: 5220967 (1993-06-01), Monyak
patent: 5287937 (1994-02-01), Sollami et al.
patent: 5452628 (1995-09-01), Montgomery et al.
patent: 6145606 (2000-11-01), Haga
patent: 6260638 (2001-07-01), Massa et al.
patent: 6595305 (2003-07-01), Dunn et al.
patent: 6684968 (2004-02-01), Bise et al.
patent: 6860344 (2005-03-01), Bise et al.
patent: 6915867 (2005-07-01), Bise
patent: 6945340 (2005-09-01), Bise et al.
patent: 7100714 (2006-09-01), Sollami
patent: 7168511 (2007-01-01), Woods et al.
patent: 7360845 (2008-04-01), Ojanen
patent: 2004/0065483 (2004-04-01), Sollami
patent: 2008/0302577 (2008-12-01), Pile
patent: 2010/0187019 (2010-07-01), Swope et al.
Bise Douglas E.
Hill Tod D.
Strothmann Kris E.
Swope Chad A.
Gay Jennifer H
Kennametl Inc.
Smith Matthew W.
LandOfFree
Roof drill bit, roof drill bit body and hard cutting insert... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Roof drill bit, roof drill bit body and hard cutting insert..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roof drill bit, roof drill bit body and hard cutting insert... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2705565