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Class Information
Number: 175/420.1
Name: Boring or penetrating the earth > Bit or bit element > Impact or percussion type > Insert
Description: Apparatus in which the cutting edge of the bit is formed of a relatively small element of abrasive resistant material which is inserted in a slot or aperture in the bit and secured therein.










Sub-classes under this class:

Class Number Class Name Patents
175/420.2 Includes diamond 88


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8567533 Rotational drill bits and drilling apparatuses including the same Oct. 29, 2013
8561727 Superabrasive cutting elements and systems and methods for manufacturing the same Oct. 22, 2013
8418785 Fixed cutter bit for directional drilling applications Apr. 16, 2013
8397841 Drill bit with cutting elements having functionally engineered wear surface Mar. 19, 2013
8387725 Percussion drilling assembly and hammer bit with gage and outer row reinforcement Mar. 5, 2013
8353371 Polycrystalline diamond compact including a substrate having a raised interfacial surface bonded to a leached polycrystalline diamond table, and applications therefor Jan. 15, 2013
8286736 Drill bit, a drill rod and a self drilling roof bolt Oct. 16, 2012
8210288 Rotary drill bits with protected cutting elements and methods Jul. 3, 2012
8002054 Roof drill bit, roof drill bit body and hard cutting insert for roof drill bit Aug. 23, 2011
7997359 Abrasive wear-resistant hardfacing materials, drill bits and drilling tools including abrasive wear-resistant hardfacing materials Aug. 16, 2011
7900721 Hard metal plate for rock drill and rock drill Mar. 8, 2011
7740089 Drilling tool with a cutting element that is configured as a plate or head Jun. 22, 2010
7628234 Thermally stable ultra-hard polycrystalline materials and compacts Dec. 8, 2009
7559382 Hard material head and rotary percussion drill bit Jul. 14, 2009
7510032 Hard composite cutting insert and method of making the same Mar. 31, 2009
7455126 Percussive drill bit, drilling system comprising such a drill bit and method of drilling a bore hole Nov. 25, 2008
7258180 Rotary hammerdrill bit Aug. 21, 2007
7225890 Cutting plate for a drill bit Jun. 5, 2007
7168511 Rotary drill bit having cutting insert with a notch Jan. 30, 2007
7137461 Masonry drilling tool Nov. 21, 2006
7128773 Compositions having enhanced wear resistance Oct. 31, 2006
7100714 Mine ceiling drill bit and blade Sep. 5, 2006
7066694 Cutting plate for a drill bit Jun. 27, 2006
7051822 Drill bit and drill tip having a tip-locating structure May. 30, 2006
7001120 Drilling tool Feb. 21, 2006
6976549 Drilling tool Dec. 20, 2005
6968912 Drill blades for drill bit Nov. 29, 2005
6945340 Roof bit and insert assembly Sep. 20, 2005
6929079 Drill bit cutter element having multiple cusps Aug. 16, 2005
6918455 Drill bit with large inserts Jul. 19, 2005
6915867 Earth penetrating rotary drill bit with helical ports Jul. 12, 2005
6886645 Liquid seal for wet roof bit May. 3, 2005
6868924 Rock drill Mar. 22, 2005
6843334 Drilling head of a rock drill Jan. 18, 2005
6817429 Roof bit carbide blade Nov. 16, 2004
6799648 Method of producing downhole drill bits with integral carbide studs Oct. 5, 2004
6782959 Cutter element with non-linear, expanded crest Aug. 31, 2004
6742610 Rock drill Jun. 1, 2004
6684968 Roof bit body and insert assembly Feb. 3, 2004
6668945 Method and apparatus for milling a window in a well casing or liner Dec. 30, 2003
6655480 Cutting insert for percussion drill bit Dec. 2, 2003
6655478 Fracture and wear resistant rock bits Dec. 2, 2003
6601660 Cutting structure for roller cone drill bits Aug. 5, 2003
6595305 Drill bit, hard member, and bit body Jul. 22, 2003
6588519 Head for a rock drill Jul. 8, 2003
6561291 Roller cone drill bit structure having improved journal angle and journal offset May. 13, 2003
6561293 Cutter element with non-linear, expanded crest May. 13, 2003
6508318 Percussive rock drill bit and buttons therefor and method for manufacturing drill bit Jan. 21, 2003
6484826 Engineered enhanced inserts for rock drilling bits Nov. 26, 2002
6454029 Rotary boring bit and borer Sep. 24, 2002

1 2 3 4










 
 
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