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Class Information
Number: 175/352
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Laterally offset cutter axis > Disk blade > Plural coaxial cutters
Description: Apparatus in which an additional rolling cutter element is mounted generally coaxially with the disk cutter.










Patents under this class:

Patent Number Title Of Patent Date Issued
8657038 Expandable reamer apparatus including stabilizers Feb. 25, 2014
5598895 Cutter assembly having a plurality of independently rotatable cutting units thereon Feb. 4, 1997
4102415 Drilling device Jul. 25, 1978
4102417 Core cut off cable Jul. 25, 1978











 
 
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