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Class Information
Number: 175/412
Name: Boring or penetrating the earth > Bit or bit element > Plural separable cutter elements
Description: Apparatus in which the bit is provided with two or more cutter elements, said elements being detachably secured to the bit head.










Sub-classes under this class:

Class Number Class Name Patents
175/413 Independently attachable 99


Patents under this class:

Patent Number Title Of Patent Date Issued
8499859 Drill bit having rotational cutting elements and method of drilling Aug. 6, 2013
8336648 Mechanical attachment of thermally stable diamond to a substrate Dec. 25, 2012
8312941 Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods Nov. 20, 2012
8286735 Drill bit having rotational cutting elements and method of drilling Oct. 16, 2012
8272458 Drill bit with replaceable blade members Sep. 25, 2012
8146683 Drilling out casing bits with other casing bits Apr. 3, 2012
8118119 Impregnated rotary bit Feb. 21, 2012
8079431 Drill bit having rotational cutting elements and method of drilling Dec. 20, 2011
8011456 Rotationally indexable cutting elements and drill bits therefor Sep. 6, 2011
7926597 Fixed cutter bit and blade for a fixed cutter bit and methods for making the same Apr. 19, 2011
7743855 Drill bit with cutter element having multifaceted, slanted top cutting surface Jun. 29, 2010
7533739 Cutting element apparatuses and drill bits so equipped May. 19, 2009
7096982 Drill shoe Aug. 29, 2006
6702046 Drill device for a drilling apparatus Mar. 9, 2004
6450269 Method and bit for directional horizontal boring Sep. 17, 2002
6131675 Combination mill and drill bit Oct. 17, 2000
6102142 Drilling tool with shock absorbers Aug. 15, 2000
5788430 Drilling tool for rotary percussion drilling Aug. 4, 1998
5286144 Apparatus and method for cutting a hole in a pipe liner Feb. 15, 1994
5070951 Drill for water wells Dec. 10, 1991
5059068 Rotary slot cutting tools and insert clamping method Oct. 22, 1991
5010967 Milling apparatus with replaceable blades Apr. 30, 1991
4610318 Rotary cutter assembly Sep. 9, 1986
4452325 Composite structure for cutting tools Jun. 5, 1984
4448270 Variable diameter earth boring bit May. 15, 1984
4335794 Rotary cone cutter Jun. 22, 1982
4252202 Drill bit Feb. 24, 1981
4190126 Rotary abrasive drilling bit Feb. 26, 1980
3987859 Unitized rotary rock bit Oct. 26, 1976
3982596 Drill bit Sep. 28, 1976











 
 
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