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Class Information
Number: 175/332
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Core forming-type bit
Description: Apparatus in which the rolling cutter element or a fixed cutting edge of the bit is so arranged that the bit makes an annular cut in the formation and leaves a central undisturbed portion of the formation in the form of a cylinder.

Sub-classes under this class:

Class Number Class Name Patents
175/333 With core-breaking means 10

Patents under this class:

Patent Number Title Of Patent Date Issued
8268452 Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures Sep. 18, 2012
8146686 Fiber-containing cutting tools Apr. 3, 2012
7975785 Drilling systems including fiber-containing diamond-impregnated cutting tools Jul. 12, 2011
7967083 Sensor for determining a position of a jack element Jun. 28, 2011
7836972 Mobile soil sampling device with vacuum collector Nov. 23, 2010
6412575 Coring bit and method for obtaining a material core sample Jul. 2, 2002
6102135 Portable core sampler Aug. 15, 2000
5494123 Drill bit with protruding insert stabilizers Feb. 27, 1996
5454437 Roller cone core bit Oct. 3, 1995
5394952 Core cutting rock bit Mar. 7, 1995
5074367 Rock bit with improved shank protection Dec. 24, 1991
4630692 Consolidation of a drilling element from separate metallic components Dec. 23, 1986

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