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Class Information
Number: 175/427
Name: Boring or penetrating the earth > Bit or bit element > Specific or diverse material > Insert > For a mine roof drill bit type
Description: Apparatus where the insert is in a cutting tooth secured with connecting means to a cutter head for obtaining solid state valuable minerals.

Patents under this class:

Patent Number Title Of Patent Date Issued
8584777 Rotational drill bits and drilling apparatuses including the same Nov. 19, 2013
8573331 Roof mining drill bit Nov. 5, 2013
8365845 High impact resistant tool Feb. 5, 2013
8333435 Holder for holding a tooth on a body of a cutting blade or grinding drum for cutting or grinding rock or hard earth formations Dec. 18, 2012
8286736 Drill bit, a drill rod and a self drilling roof bolt Oct. 16, 2012
8240404 Roof bolt bit Aug. 14, 2012
8157028 Masonry drill bit Apr. 17, 2012
8002054 Roof drill bit, roof drill bit body and hard cutting insert for roof drill bit Aug. 23, 2011
7766103 Drill bit and a single pass drilling apparatus Aug. 3, 2010
7648314 Method for manufacturing a cutting pick and the resulting pick Jan. 19, 2010
7628233 Carbide bolster Dec. 8, 2009
7513319 Reamer bit Apr. 7, 2009
7455484 Cutting or breaking tool as well as cutting insert for the latter Nov. 25, 2008
7392866 Roof drilling system improvements Jul. 1, 2008
7228922 Drill bit Jun. 12, 2007
7168511 Rotary drill bit having cutting insert with a notch Jan. 30, 2007
7100714 Mine ceiling drill bit and blade Sep. 5, 2006
6968912 Drill blades for drill bit Nov. 29, 2005
6959775 Drill bit Nov. 1, 2005
6868924 Rock drill Mar. 22, 2005
6817429 Roof bit carbide blade Nov. 16, 2004
6742610 Rock drill Jun. 1, 2004
6702047 Drill bit for drilling rock Mar. 9, 2004
6684968 Roof bit body and insert assembly Feb. 3, 2004
6431295 Rock drill Aug. 13, 2002
6405813 Rock drill for drilling bores in reinforced concrete Jun. 18, 2002
6354771 Cutting or breaking tool as well as cutting insert for the latter Mar. 12, 2002
6260638 Rotatable cutting bit assembly with wedge-lock retention assembly Jul. 17, 2001
6260637 Rock drill Jul. 17, 2001
6176332 Rotatable cutting bit assembly with cutting inserts Jan. 23, 2001
6151960 Method of determining characteristics of a rotary drag-type drill bit Nov. 28, 2000
6145606 Cutting insert for roof drill bit Nov. 14, 2000
6032750 Drilling tool having a drill bit with primary and secondary cutting edges Mar. 7, 2000
5996715 Mine roof drill bit and cutting insert therefor Dec. 7, 1999
5996714 Rotatable cutting bit assembly with wedge-lock retention assembly Dec. 7, 1999
5873423 Frustum cutting bit arrangement Feb. 23, 1999
5829540 Mine roof drill bit and cutting insert therefor Nov. 3, 1998
5535839 Roof drill bit with radial domed PCD inserts Jul. 16, 1996
5499688 PDC insert featuring side spiral wear pads Mar. 19, 1996
5460232 Rotary earth drill bit socket shield Oct. 24, 1995
5417475 Tool comprised of a holder body and a hard insert and method of using same May. 23, 1995
5400861 Rotatable cutting bit assembly Mar. 28, 1995
5311959 Mine tool roof bit insert May. 17, 1994
5287937 Drill bits and the blades therefor Feb. 22, 1994
5269387 Insert for mine roof tool bit Dec. 14, 1993

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